RUTX50 5g does not work at all

38rq1 · January 14, 2025, 11:43pm

As long as i dont switch 5G on, everything works.
But as soon as i switch on 5G, this happens:

926 Wed Jan 15 01:13:44 2025 kern.warn kernel: [  522.954779] ------------[ cut here ]------------
927 Wed Jan 15 01:13:44 2025 kern.warn kernel: [  522.954846] WARNING: CPU: 3 PID: 0 at net/sched/sch_generic.c:468 dev_watchdog+0x28c/0x290
928 Wed Jan 15 01:13:44 2025 kern.info kernel: [  522.958484] NETDEV WATCHDOG: wwan0 (qmi_wwan): transmit queue 0 timed out
929 Wed Jan 15 01:13:44 2025 kern.warn kernel: [  522.966572] Modules linked in: ath10k_pci ath10k_core ath wireguard qmi_wwan pppoe option mac80211 libchacha20poly1305 l2tp_ppp iptable_nat ipt_REJECT ebtable_nat ebtable_filter ebtable_broute curve25519_neon cfg80211 xt_time xt_tcpudp xt_tcpmss xt_statistic xt_state xt_recent xt_policy xt_nat xt_multiport xt_mark xt_mac xt_limit xt_length xt_hl xt_helper xt_hashlimit xt_esp xt_ecn xt_dscp xt_coova xt_conntrack xt_connmark xt_connlimit xt_connbytes xt_comment xt_TCPMSS xt_REDIRECT xt_NFLOG xt_NETMAP xt_MASQUERADE xt_LOG xt_HL xt_FLOWOFFLOAD xt_DSCP xt_CT xt_CLASSIFY xfrm_interface usbnet usblp usb_wwan ts_fsm ts_bm sch_cake rtk_btusb rfcomm pptp pppox ppp_mppe ppp_async poly1305_arm pl2303 nft_reject_ipv6 nft_reject_ipv4 nft_reject_inet nft_reject nft_redir nft_quota nft_objref nft_numgen nft_log nft_limit nft_hash nft_fwd_netdev nft_dup_netdev nft_ct nft_counter nfnetlink_log nf_tables nf_reject_ipv4 nf_nat_tftp nf_nat_snmp_basic nf_nat_sip nf_nat_pptp nf_nat_irc nf_nat_h323 nf_nat_ftp
930 Wed Jan 15 01:13:44 2025 kern.warn kernel: [  522.967331]  nf_nat_amanda nf_nat nf_log_ipv6 nf_log_ipv4 nf_log_common nf_flow_table nf_dup_netdev nf_conntrack_tftp nf_conntrack_snmp nf_conntrack_sip nf_conntrack_pptp nf_conntrack_netlink nf_conntrack_irc nf_conntrack_h323 nf_conntrack_ftp nf_conntrack_broadcast ts_kmp nf_conntrack_amanda nf_conncount libcurve25519_generic libcrc32c iptable_raw iptable_mangle iptable_filter ipt_ah ipt_ECN ip6table_raw ip_tables hidp hci_uart ftdi_sio exfat ebtables ebt_vlan ebt_stp ebt_snat ebt_redirect ebt_pkttype ebt_nflog ebt_mark_m ebt_mark ebt_log ebt_limit ebt_ip ebt_dnat ebt_arpreply ebt_arp ebt_among ebt_802_3 cypress_m8 cp210x compat chacha_neon ch343 ch341 cdc_wdm cdc_acm btusb btintel bnep bluetooth belkin_sa asn1_decoder ark3116 pulse_counter cypress_serial usbserial qssdk ppp_generic nf_conntrack slhc nf_defrag_ipv6 nf_defrag_ipv4 fuse sch_tbf sch_ingress sch_htb sch_hfsc em_u32 cls_u32 cls_route cls_matchall cls_fw cls_flow cls_basic act_skbedit act_mirred act_gact hid evdev input_core
931 Wed Jan 15 01:13:44 2025 kern.warn kernel: [  523.039274]  tlt_gpio xt_set ip_set_list_set ip_set_hash_netportnet ip_set_hash_netport ip_set_hash_netnet ip_set_hash_netiface ip_set_hash_net ip_set_hash_mac ip_set_hash_ipportnet ip_set_hash_ipportip ip_set_hash_ipport ip_set_hash_ipmark ip_set_hash_ip ip_set_bitmap_port ip_set_bitmap_ipmac ip_set_bitmap_ip ip_set nfnetlink ip6table_mangle ip6table_filter ip6_tables ip6t_REJECT x_tables nf_reject_ipv6 msdos ip6_gre ip_gre gre ifb l2tp_ip6 l2tp_ip l2tp_eth sit l2tp_netlink l2tp_core ipcomp6 xfrm6_tunnel esp6 ah6 xfrm4_tunnel ipcomp esp4 ah4 ip6_tunnel tunnel6 tunnel4 ip_tunnel vrf tun ovpn_dco_v2 udp_tunnel ip6_udp_tunnel xfrm_user xfrm_ipcomp af_key xfrm_algo vfat fat ntfs autofs4 nls_utf8 nls_iso8859_1 nls_cp437 ecdh_generic ecc sha512_generic kpp ghash_arm_ce echainiv cmac usb_storage leds_gpio xhci_plat_hcd xhci_pci xhci_hcd dwc3 dwc3_qcom uhci_hcd sd_mod scsi_mod r2ec gpio_button_hotplug ext4 mbcache jbd2 mii crc32c_generic
932 Wed Jan 15 01:13:44 2025 kern.warn kernel: [  523.208370] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 5.10.226 #0
933 Wed Jan 15 01:13:44 2025 kern.warn kernel: [  523.230531] Hardware name: Generic DT based system
934 Wed Jan 15 01:13:44 2025 kern.warn kernel: [  523.236543] [<c030d2d0>] (unwind_backtrace) from [<c0309fa0>] (show_stack+0x10/0x14)
935 Wed Jan 15 01:13:44 2025 kern.warn kernel: [  523.241224] [<c0309fa0>] (show_stack) from [<c0611124>] (dump_stack+0x9c/0xb0)
936 Wed Jan 15 01:13:44 2025 kern.warn kernel: [  523.249153] [<c0611124>] (dump_stack) from [<c0324d28>] (__warn+0xa4/0xbc)
937 Wed Jan 15 01:13:44 2025 kern.warn kernel: [  523.256150] [<c0324d28>] (__warn) from [<c0324dc4>] (warn_slowpath_fmt+0x84/0x94)
938 Wed Jan 15 01:13:44 2025 kern.warn kernel: [  523.263018] [<c0324dc4>] (warn_slowpath_fmt) from [<c0807cb0>] (dev_watchdog+0x28c/0x290)
939 Wed Jan 15 01:13:44 2025 kern.warn kernel: [  523.270596] [<c0807cb0>] (dev_watchdog) from [<c038c068>] (call_timer_fn.constprop.6+0x24/0x98)
940 Wed Jan 15 01:13:44 2025 kern.warn kernel: [  523.278752] [<c038c068>] (call_timer_fn.constprop.6) from [<c038c6d0>] (run_timer_softirq+0x1f8/0x498)
941 Wed Jan 15 01:13:44 2025 kern.warn kernel: [  523.287230] [<c038c6d0>] (run_timer_softirq) from [<c0301478>] (__do_softirq+0x120/0x2ac)
942 Wed Jan 15 01:13:44 2025 kern.warn kernel: [  523.296603] [<c0301478>] (__do_softirq) from [<c0329330>] (irq_exit+0xac/0xd0)
943 Wed Jan 15 01:13:44 2025 kern.warn kernel: [  523.304851] [<c0329330>] (irq_exit) from [<c0372be0>] (__handle_domain_irq+0x60/0xb4)
944 Wed Jan 15 01:13:44 2025 kern.warn kernel: [  523.311965] [<c0372be0>] (__handle_domain_irq) from [<c0301344>] (gic_handle_irq+0x80/0x94)
945 Wed Jan 15 01:13:44 2025 kern.warn kernel: [  523.319861] [<c0301344>] (gic_handle_irq) from [<c0300b4c>] (__irq_svc+0x6c/0x90)
946 Wed Jan 15 01:13:44 2025 kern.warn kernel: [  523.328015] Exception stack(0xc1067f58 to 0xc1067fa0)
947 Wed Jan 15 01:13:44 2025 kern.warn kernel: [  523.335653] 7f40:                                                       00000000 001d5ef4
948 Wed Jan 15 01:13:44 2025 kern.warn kernel: [  523.340695] 7f60: cfd60584 c0313160 ffffe000 c0d04f18 c0d04f58 00000008 00000000 c0d0f008
949 Wed Jan 15 01:13:44 2025 kern.warn kernel: [  523.348854] 7f80: 00000000 c0c46fe8 00000000 c1067fa8 c03075b8 c03075bc 60000013 ffffffff
950 Wed Jan 15 01:13:44 2025 kern.warn kernel: [  523.357022] [<c0300b4c>] (__irq_svc) from [<c03075bc>] (arch_cpu_idle+0x38/0x3c)
951 Wed Jan 15 01:13:44 2025 kern.warn kernel: [  523.365178] [<c03075bc>] (arch_cpu_idle) from [<c0946c90>] (default_idle_call+0x2c/0x3c)
952 Wed Jan 15 01:13:44 2025 kern.warn kernel: [  523.372644] [<c0946c90>] (default_idle_call) from [<c034f860>] (do_idle+0x1e4/0x208)
953 Wed Jan 15 01:13:44 2025 kern.warn kernel: [  523.380714] [<c034f860>] (do_idle) from [<c034fb20>] (cpu_startup_entry+0x18/0x1c)
954 Wed Jan 15 01:13:44 2025 kern.warn kernel: [  523.388443] [<c034fb20>] (cpu_startup_entry) from [<803016ac>] (0x803016ac)
955 Wed Jan 15 01:13:44 2025 kern.warn kernel: [  523.395874] ---[ end trace bbf2096cb8fd8e30 ]---
956 Wed Jan 15 01:13:51 2025 daemon.notice netifd: mob1s1a1 (12087): Request timed out
957 Wed Jan 15 01:13:51 2025 daemon.notice netifd: mob1s1a1 (12087): Mobile connection lost!
958 Wed Jan 15 01:13:51 2025 daemon.notice netifd: Interface 'mob1s1a1' has lost the connection
959 Wed Jan 15 01:13:51 2025 daemon.notice netifd: Network device 'wwan0' link is down
960 Wed Jan 15 01:13:51 2025 daemon.notice netifd: mob1s1a1 (13065): Stopping network mob1s1a1
961 Wed Jan 15 01:13:51 2025 daemon.notice netifd: mob1s1a1 (13065): Command failed: Not found
962 Wed Jan 15 01:13:51 2025 daemon.notice netifd: mob1s1a1 (13065): Stopping network on /dev/cdc-wdm0!
963 Wed Jan 15 01:13:51 2025 daemon.notice netifd: Network device 'qmimux0' link is down
964 Wed Jan 15 01:13:51 2025 daemon.notice netifd: Interface 'mob1s1a1_4' has link connectivity loss
965 Wed Jan 15 01:13:51 2025 user.notice netifd: uqmi -s -d /dev/cdc-wdm0 -t 3000 --set-client-id wds,16 --stop-network 0xFFFFFFFF --autoconnect
966 Wed Jan 15 01:13:51 2025 daemon.notice netifd: Interface 'mob1s1a1_4' is disabled
967 Wed Jan 15 01:13:51 2025 daemon.notice netifd: mob1s1a1 (13065): Command failed: Permission denied
968 Wed Jan 15 01:13:52 2025 daemon.notice netifd: Interface 'mob1s1a1' is now down

And after that, nothing works anymore until reboot.

In webui, i see briefly that router is connected to N28 and also several 4g bands, but none of the packets go trough. After a while, whole connetion is dropped and only way to get it back is to disable 5G completely.

Is that SW or HW issue?

Marcelo.Barros · January 15, 2025, 12:18am

hi…

Look here…

38rq1 · January 15, 2025, 8:28am

Unfortunately, it did not work.
Added option dhcp ‘0’ to mob1s1a1 config section in /etc/config/network
After that rebooted (just to see if everything works), and it did.
Then switched mobile connection from “4G only” to “5G/4G/3G auto” and result was exactly same as before.

722 Wed Jan 15 10:19:58 2025 kern.warn kernel: [  235.034769] ------------[ cut here ]------------
723 Wed Jan 15 10:19:58 2025 kern.warn kernel: [  235.034852] WARNING: CPU: 1 PID: 0 at net/sched/sch_generic.c:468 dev_watchdog+0x28c/0x290
724 Wed Jan 15 10:19:58 2025 kern.info kernel: [  235.038519] NETDEV WATCHDOG: wwan0 (qmi_wwan): transmit queue 0 timed out
725 Wed Jan 15 10:19:58 2025 kern.warn kernel: [  235.046565] Modules linked in: ath10k_pci ath10k_core ath wireguard qmi_wwan pppoe option mac80211 libchacha20poly1305 l2tp_ppp iptable_nat ipt_REJECT ebtable_nat ebtable_filter ebtable_broute curve25519_neon cfg80211 xt_time xt_tcpudp xt_tcpmss xt_statistic xt_state xt_recent xt_policy xt_nat xt_multiport xt_mark xt_mac xt_limit xt_length xt_hl xt_helper xt_hashlimit xt_esp xt_ecn xt_dscp xt_coova xt_conntrack xt_connmark xt_connlimit xt_connbytes xt_comment xt_TCPMSS xt_REDIRECT xt_NFLOG xt_NETMAP xt_MASQUERADE xt_LOG xt_HL xt_FLOWOFFLOAD xt_DSCP xt_CT xt_CLASSIFY xfrm_interface usbnet usblp usb_wwan ts_fsm ts_bm sch_cake rtk_btusb rfcomm pptp pppox ppp_mppe ppp_async poly1305_arm pl2303 nft_reject_ipv6 nft_reject_ipv4 nft_reject_inet nft_reject nft_redir nft_quota nft_objref nft_numgen nft_log nft_limit nft_hash nft_fwd_netdev nft_dup_netdev nft_ct nft_counter nfnetlink_log nf_tables nf_reject_ipv4 nf_nat_tftp nf_nat_snmp_basic nf_nat_sip nf_nat_pptp nf_nat_irc nf_nat_h323 nf_nat_ftp
726 Wed Jan 15 10:19:58 2025 kern.warn kernel: [  235.047542]  nf_nat_amanda nf_nat nf_log_ipv6 nf_log_ipv4 nf_log_common nf_flow_table nf_dup_netdev nf_conntrack_tftp nf_conntrack_snmp nf_conntrack_sip nf_conntrack_pptp nf_conntrack_netlink nf_conntrack_irc nf_conntrack_h323 nf_conntrack_ftp nf_conntrack_broadcast ts_kmp nf_conntrack_amanda nf_conncount libcurve25519_generic libcrc32c iptable_raw iptable_mangle iptable_filter ipt_ah ipt_ECN ip6table_raw ip_tables hidp hci_uart ftdi_sio exfat ebtables ebt_vlan ebt_stp ebt_snat ebt_redirect ebt_pkttype ebt_nflog ebt_mark_m ebt_mark ebt_log ebt_limit ebt_ip ebt_dnat ebt_arpreply ebt_arp ebt_among ebt_802_3 cypress_m8 cp210x compat chacha_neon ch343 ch341 cdc_wdm cdc_acm btusb btintel bnep bluetooth belkin_sa asn1_decoder ark3116 pulse_counter cypress_serial usbserial qssdk ppp_generic nf_conntrack slhc nf_defrag_ipv6 nf_defrag_ipv4 fuse sch_tbf sch_ingress sch_htb sch_hfsc em_u32 cls_u32 cls_route cls_matchall cls_fw cls_flow cls_basic act_skbedit act_mirred act_gact hid evdev input_core
727 Wed Jan 15 10:19:58 2025 kern.warn kernel: [  235.119446]  tlt_gpio xt_set ip_set_list_set ip_set_hash_netportnet ip_set_hash_netport ip_set_hash_netnet ip_set_hash_netiface ip_set_hash_net ip_set_hash_mac ip_set_hash_ipportnet ip_set_hash_ipportip ip_set_hash_ipport ip_set_hash_ipmark ip_set_hash_ip ip_set_bitmap_port ip_set_bitmap_ipmac ip_set_bitmap_ip ip_set nfnetlink ip6table_mangle ip6table_filter ip6_tables ip6t_REJECT x_tables nf_reject_ipv6 msdos ip6_gre ip_gre gre ifb l2tp_ip6 l2tp_ip l2tp_eth sit l2tp_netlink l2tp_core ipcomp6 xfrm6_tunnel esp6 ah6 xfrm4_tunnel ipcomp esp4 ah4 ip6_tunnel tunnel6 tunnel4 ip_tunnel vrf tun ovpn_dco_v2 udp_tunnel ip6_udp_tunnel xfrm_user xfrm_ipcomp af_key xfrm_algo vfat fat ntfs autofs4 nls_utf8 nls_iso8859_1 nls_cp437 ecdh_generic ecc sha512_generic kpp ghash_arm_ce echainiv cmac usb_storage leds_gpio xhci_plat_hcd xhci_pci xhci_hcd dwc3 dwc3_qcom uhci_hcd sd_mod scsi_mod r2ec gpio_button_hotplug ext4 mbcache jbd2 mii crc32c_generic
728 Wed Jan 15 10:19:58 2025 kern.warn kernel: [  235.288341] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.10.226 #0
729 Wed Jan 15 10:19:58 2025 kern.warn kernel: [  235.310539] Hardware name: Generic DT based system
730 Wed Jan 15 10:19:58 2025 kern.warn kernel: [  235.316532] [<c030d2d0>] (unwind_backtrace) from [<c0309fa0>] (show_stack+0x10/0x14)
731 Wed Jan 15 10:19:58 2025 kern.warn kernel: [  235.321213] [<c0309fa0>] (show_stack) from [<c0611124>] (dump_stack+0x9c/0xb0)
732 Wed Jan 15 10:19:58 2025 kern.warn kernel: [  235.329107] [<c0611124>] (dump_stack) from [<c0324d28>] (__warn+0xa4/0xbc)
733 Wed Jan 15 10:19:58 2025 kern.warn kernel: [  235.336134] [<c0324d28>] (__warn) from [<c0324dc4>] (warn_slowpath_fmt+0x84/0x94)
734 Wed Jan 15 10:19:58 2025 kern.warn kernel: [  235.342998] [<c0324dc4>] (warn_slowpath_fmt) from [<c0807cb0>] (dev_watchdog+0x28c/0x290)
735 Wed Jan 15 10:19:58 2025 kern.warn kernel: [  235.350551] [<c0807cb0>] (dev_watchdog) from [<c038c068>] (call_timer_fn.constprop.6+0x24/0x98)
736 Wed Jan 15 10:19:58 2025 kern.warn kernel: [  235.358707] [<c038c068>] (call_timer_fn.constprop.6) from [<c038c6d0>] (run_timer_softirq+0x1f8/0x498)
737 Wed Jan 15 10:19:58 2025 kern.warn kernel: [  235.367217] [<c038c6d0>] (run_timer_softirq) from [<c0301478>] (__do_softirq+0x120/0x2ac)
738 Wed Jan 15 10:19:58 2025 kern.warn kernel: [  235.376589] [<c0301478>] (__do_softirq) from [<c0329330>] (irq_exit+0xac/0xd0)
739 Wed Jan 15 10:19:58 2025 kern.warn kernel: [  235.384841] [<c0329330>] (irq_exit) from [<c0372be0>] (__handle_domain_irq+0x60/0xb4)
740 Wed Jan 15 10:19:58 2025 kern.warn kernel: [  235.391953] [<c0372be0>] (__handle_domain_irq) from [<c0301344>] (gic_handle_irq+0x80/0x94)
741 Wed Jan 15 10:19:58 2025 kern.warn kernel: [  235.399852] [<c0301344>] (gic_handle_irq) from [<c0300b4c>] (__irq_svc+0x6c/0x90)
742 Wed Jan 15 10:19:58 2025 kern.warn kernel: [  235.408003] Exception stack(0xc1063f58 to 0xc1063fa0)
743 Wed Jan 15 10:19:58 2025 kern.warn kernel: [  235.415641] 3f40:                                                       00000000 0007b100
744 Wed Jan 15 10:19:58 2025 kern.warn kernel: [  235.420683] 3f60: cfd42584 c0313160 ffffe000 c0d04f18 c0d04f58 00000002 00000000 c0d0f008
745 Wed Jan 15 10:19:58 2025 kern.warn kernel: [  235.428843] 3f80: 00000000 c0c46fe8 c0d04fd0 c1063fa8 c03075b8 c03075bc 60000013 ffffffff
746 Wed Jan 15 10:19:58 2025 kern.warn kernel: [  235.437008] [<c0300b4c>] (__irq_svc) from [<c03075bc>] (arch_cpu_idle+0x38/0x3c)
747 Wed Jan 15 10:19:58 2025 kern.warn kernel: [  235.445165] [<c03075bc>] (arch_cpu_idle) from [<c0946c90>] (default_idle_call+0x2c/0x3c)
748 Wed Jan 15 10:19:58 2025 kern.warn kernel: [  235.452632] [<c0946c90>] (default_idle_call) from [<c034f860>] (do_idle+0x1e4/0x208)
749 Wed Jan 15 10:19:58 2025 kern.warn kernel: [  235.460700] [<c034f860>] (do_idle) from [<c034fb20>] (cpu_startup_entry+0x18/0x1c)
750 Wed Jan 15 10:19:58 2025 kern.warn kernel: [  235.468425] [<c034fb20>] (cpu_startup_entry) from [<803016ac>] (0x803016ac)
751 Wed Jan 15 10:19:58 2025 kern.warn kernel: [  235.475838] ---[ end trace e9554b48ad31577f ]---

Marija · January 15, 2025, 8:39am

Hello,

Please ensure that your device is operating on the latest RutOS firmware (7.11.3), which can be downloaded here: RUTX50 Firmware Downloads.

Could you also share a screenshot of the Status → Network → Mobile page where the N28 band signal strength is displayed? You can find recommendations for optimal signal strength here: Mobile Signal Strength Recommendations.

Additionally, please check the following:

PDP Type: Go to Network → WAN → Mobile Interface → Edit and ensure the correct PDP type is selected.
APN Settings: Verify that the correct APN is being used and try setting it manually if necessary.

Lastly, could you provide the internal modem firmware version of your device? You can find this information under System → Firmware → Update firmware, next to the internal modem firmware section.

Best regards,

38rq1 · January 15, 2025, 9:03am

Hi, Marija

Firmware is RUTX_R_00.07.11.3
Modem firmware is RG501QEUAAR12A11M4G_04.201.04.201
(Device come with different firmwares, cant remember exactly what version it was, but behaivour was same, after switching 5G on - no network connection at all. So i updated it to latest available.)
PDP type for mob1s1a1 is IPv4 (changing that to IPv4/IPv6 des not make any difference, what i have not tried yet is to put it on IPv6 only)
APN is currently auto, but i tried to put it to manual but again, result was exactly same.

Marija · January 15, 2025, 9:15am

Thank you for providing the information. From your screenshot, it appears that the signal strength is poor, which is likely the cause of the issue you are experiencing.

Please ensure that the original mobile antennas are properly connected to the RUTX50 at a 90-degree angle. Additionally, you might want to consider using an antenna with higher gain. If the device is stationary and the location of the cell tower is known, using a directional antenna could also be a good option. A directional antenna would provide the best signal, but it will need to be aligned with the cell tower for optimal performance.

Once the signal improves, I recommend attempting to replicate the issue to see if the situation changes.

Best regards,

38rq1 · January 15, 2025, 9:53am

Previous screenshot does not represent normal state.
Since qmi_wwan module is failing, i had to make sure i get screenshot as fast as i can (during connection initiating) because in later state, there is nothing to see, all values are N/A.
But if connection is made normally (4G), then signal is also poor at the beginning, but in some seconds it gets better and stays so.

This screenshot is when router is workink on 4G only, and download speed during that time is about 60-70Mbit/s.
And i do use two 18dBi directional antennas.

But, reason for kernel module (qmi_wwan) failure is due to poor signal?

Marija · January 15, 2025, 10:25am

The qmi_wwan issue in the logs indicates that the modem is not accepting data for transfer. Additionally, when the signal strength drops below -100 dBm, we cannot guarantee a stable and reliable mobile connection.

Could you kindly confirm the ports on which you are using the two 18 dBi directional antennas?

Best regards,

38rq1 · January 15, 2025, 11:23am

Directional antennas are connected to side ports.
I do have antennas that came with router connected to middle ports, should i remove them completely?

Router itself is located on second floor right behind window, and facing cell tower which is about 5-6km away, but there are some trees that block the view to tower, if those trees wouldnt be there, then tower lights would be directry visible from distance at night.

As for low signal, i do have Nokia FastMile 5G unit, since it does only have built in antennas and no option to add external antennas, therefore it has vely low signal and troughput (indoors, did not test it outside). But it does work on 5G network, but RUTX50 does not with better signal.

Also, i did see green (excellent) RSRQ on 5G band couple of times while testing switching to 5G.
But since modem goes away right after connection is made, most of the times UI will end up showing N/A before i see green RSRQ, but it did happen. If you like, i could try to get screenshot for you where N28, B3, B20 are green and B1 is orange (this band never has been green).

One test i did once was to set all bands to manual, and allow only B20 and N28, and then both of them were green, but again, no internet connection (did not look log at that time).

Marija · January 15, 2025, 12:07pm

Thank you for providing detailed information.

For testing purposes, could you please try using all four original antennas that came with the RUTX50 and let me know if you observe any changes?

Best regards,

38rq1 · January 15, 2025, 12:16pm

Sure, no problem.

And also what i was thinking to to is to drive close to tower with router and test 5G there, where signal is strong.

It will take some time and i’ll get back to you with results when i have them.

38rq1 · January 15, 2025, 4:16pm

OK, i went close (150m) to tower. Signal was good, Speedtest showed ~200Mbit/s down and ~100Mbit/s up. This was 4G only.

Now, i switched router to 5G/4G/3G auto mode. Router restarted connection:

Ping was running whole time, IP address was shown by UI, but no packets got answer.

Then, again, after 10 seconds, same qmi_wwan module problem appeared on log:

719 Wed Jan 15 15:28:44 2025 daemon.info dnsmasq[1966]: using nameserver 1.1.1.1#53
720 Wed Jan 15 15:28:44 2025 daemon.info dnsmasq[1966]: using nameserver 9.9.9.9#53
721 Wed Jan 15 15:28:44 2025 daemon.info dnsmasq[1966]: using nameserver 8.8.8.8#53
722 Wed Jan 15 15:28:44 2025 daemon.info dnsmasq[1966]: using nameserver 91.129.88.33#53
723 Wed Jan 15 15:28:44 2025 daemon.info dnsmasq[1966]: using nameserver 91.129.88.34#53
724 Wed Jan 15 15:28:44 2025 daemon.info dnsmasq[1966]: using only locally-known addresses for test
725 Wed Jan 15 15:28:44 2025 daemon.info dnsmasq[1966]: using only locally-known addresses for onion
726 Wed Jan 15 15:28:44 2025 daemon.info dnsmasq[1966]: using only locally-known addresses for localhost
727 Wed Jan 15 15:28:44 2025 daemon.info dnsmasq[1966]: using only locally-known addresses for local
728 Wed Jan 15 15:28:44 2025 daemon.info dnsmasq[1966]: using only locally-known addresses for invalid
729 Wed Jan 15 15:28:44 2025 daemon.info dnsmasq[1966]: using only locally-known addresses for bind
730 Wed Jan 15 15:28:44 2025 daemon.info dnsmasq[1966]: using only locally-known addresses for lan
731 Wed Jan 15 15:28:44 2025 daemon.info mobifd: Connection setup completed for 'mob1s1a1'
732 Wed Jan 15 15:28:44 2025 daemon.info mobifd: Connection setup completed for modem: 'gsm.modem0'
733 Wed Jan 15 15:28:46 2025 daemon.info dnsmasq[1966]: read /etc/hosts - 12 names
734 Wed Jan 15 15:28:46 2025 daemon.info dnsmasq[1966]: read /tmp/hosts/dhcp.cfg01411c - 4 names
735 Wed Jan 15 15:28:46 2025 daemon.info dnsmasq-dhcp[1966]: read /etc/ethers - 0 addresses
736 Wed Jan 15 15:28:47 2025 user.notice firewall: Reloading firewall due to ifup of mob1s1a1_4 (qmimux0)
737 Wed Jan 15 15:28:48 2025 daemon.info dnsmasq[1966]: read /etc/hosts - 12 names
738 Wed Jan 15 15:28:48 2025 daemon.info dnsmasq[1966]: read /tmp/hosts/dhcp.cfg01411c - 4 names
739 Wed Jan 15 15:28:48 2025 daemon.info dnsmasq-dhcp[1966]: read /etc/ethers - 0 addresses
740 Wed Jan 15 15:28:58 2025 kern.warn kernel: [  376.954757] ------------[ cut here ]------------
741 Wed Jan 15 15:28:58 2025 kern.warn kernel: [  376.954844] WARNING: CPU: 3 PID: 0 at net/sched/sch_generic.c:468 dev_watchdog+0x28c/0x290
742 Wed Jan 15 15:28:58 2025 kern.info kernel: [  376.958467] NETDEV WATCHDOG: wwan0 (qmi_wwan): transmit queue 0 timed out
743 Wed Jan 15 15:28:58 2025 kern.warn kernel: [  376.966547] Modules linked in: ath10k_pci ath10k_core ath wireguard qmi_wwan pppoe option mac80211 libchacha20poly1305 l2tp_ppp iptable_nat ipt_REJECT ebtable_nat ebtable_filter ebtable_broute curve25519_neon cfg80211 xt_time xt_tcpudp xt_tcpmss xt_statistic xt_state xt_recent xt_policy xt_nat xt_multiport xt_mark xt_mac xt_limit xt_length xt_hl xt_helper xt_hashlimit xt_esp xt_ecn xt_dscp xt_coova xt_conntrack xt_connmark xt_connlimit xt_connbytes xt_comment xt_TCPMSS xt_REDIRECT xt_NFLOG xt_NETMAP xt_MASQUERADE xt_LOG xt_HL xt_FLOWOFFLOAD xt_DSCP xt_CT xt_CLASSIFY xfrm_interface usbnet usblp usb_wwan ts_fsm ts_bm sch_cake rtk_btusb rfcomm pptp pppox ppp_mppe ppp_async poly1305_arm pl2303 nft_reject_ipv6 nft_reject_ipv4 nft_reject_inet nft_reject nft_redir nft_quota nft_objref nft_numgen nft_log nft_limit nft_hash nft_fwd_netdev nft_dup_netdev nft_ct nft_counter nfnetlink_log nf_tables nf_reject_ipv4 nf_nat_tftp nf_nat_snmp_basic nf_nat_sip nf_nat_pptp nf_nat_irc nf_nat_h323 nf_nat_ftp
744 Wed Jan 15 15:28:58 2025 kern.warn kernel: [  376.967338]  nf_nat_amanda nf_nat nf_log_ipv6 nf_log_ipv4 nf_log_common nf_flow_table nf_dup_netdev nf_conntrack_tftp nf_conntrack_snmp nf_conntrack_sip nf_conntrack_pptp nf_conntrack_netlink nf_conntrack_irc nf_conntrack_h323 nf_conntrack_ftp nf_conntrack_broadcast ts_kmp nf_conntrack_amanda nf_conncount libcurve25519_generic libcrc32c iptable_raw iptable_mangle iptable_filter ipt_ah ipt_ECN ip6table_raw ip_tables hidp hci_uart ftdi_sio exfat ebtables ebt_vlan ebt_stp ebt_snat ebt_redirect ebt_pkttype ebt_nflog ebt_mark_m ebt_mark ebt_log ebt_limit ebt_ip ebt_dnat ebt_arpreply ebt_arp ebt_among ebt_802_3 cypress_m8 cp210x compat chacha_neon ch343 ch341 cdc_wdm cdc_acm btusb btintel bnep bluetooth belkin_sa asn1_decoder ark3116 pulse_counter cypress_serial usbserial qssdk ppp_generic nf_conntrack slhc nf_defrag_ipv6 nf_defrag_ipv4 fuse sch_tbf sch_ingress sch_htb sch_hfsc em_u32 cls_u32 cls_route cls_matchall cls_fw cls_flow cls_basic act_skbedit act_mirred act_gact hid evdev input_core
745 Wed Jan 15 15:28:58 2025 kern.warn kernel: [  377.039770]  tlt_gpio xt_set ip_set_list_set ip_set_hash_netportnet ip_set_hash_netport ip_set_hash_netnet ip_set_hash_netiface ip_set_hash_net ip_set_hash_mac ip_set_hash_ipportnet ip_set_hash_ipportip ip_set_hash_ipport ip_set_hash_ipmark ip_set_hash_ip ip_set_bitmap_port ip_set_bitmap_ipmac ip_set_bitmap_ip ip_set nfnetlink ip6table_mangle ip6table_filter ip6_tables ip6t_REJECT x_tables nf_reject_ipv6 msdos ip6_gre ip_gre gre ifb l2tp_ip6 l2tp_ip l2tp_eth sit l2tp_netlink l2tp_core ipcomp6 xfrm6_tunnel esp6 ah6 xfrm4_tunnel ipcomp esp4 ah4 ip6_tunnel tunnel6 tunnel4 ip_tunnel vrf tun ovpn_dco_v2 udp_tunnel ip6_udp_tunnel xfrm_user xfrm_ipcomp af_key xfrm_algo vfat fat ntfs autofs4 nls_utf8 nls_iso8859_1 nls_cp437 ecdh_generic ecc sha512_generic kpp ghash_arm_ce echainiv cmac usb_storage leds_gpio xhci_plat_hcd xhci_pci xhci_hcd dwc3 dwc3_qcom uhci_hcd sd_mod scsi_mod r2ec gpio_button_hotplug ext4 mbcache jbd2 mii crc32c_generic
746 Wed Jan 15 15:28:58 2025 kern.warn kernel: [  377.208299] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 5.10.226 #0
747 Wed Jan 15 15:28:59 2025 kern.warn kernel: [  377.230510] Hardware name: Generic DT based system
748 Wed Jan 15 15:28:59 2025 kern.warn kernel: [  377.236514] [<c030d2d0>] (unwind_backtrace) from [<c0309fa0>] (show_stack+0x10/0x14)
749 Wed Jan 15 15:28:59 2025 kern.warn kernel: [  377.241196] [<c0309fa0>] (show_stack) from [<c0611124>] (dump_stack+0x9c/0xb0)
750 Wed Jan 15 15:28:59 2025 kern.warn kernel: [  377.249090] [<c0611124>] (dump_stack) from [<c0324d28>] (__warn+0xa4/0xbc)
751 Wed Jan 15 15:28:59 2025 kern.warn kernel: [  377.256120] [<c0324d28>] (__warn) from [<c0324dc4>] (warn_slowpath_fmt+0x84/0x94)
752 Wed Jan 15 15:28:59 2025 kern.warn kernel: [  377.262985] [<c0324dc4>] (warn_slowpath_fmt) from [<c0807cb0>] (dev_watchdog+0x28c/0x290)
753 Wed Jan 15 15:28:59 2025 kern.warn kernel: [  377.270534] [<c0807cb0>] (dev_watchdog) from [<c038c068>] (call_timer_fn.constprop.6+0x24/0x98)
754 Wed Jan 15 15:28:59 2025 kern.warn kernel: [  377.278692] [<c038c068>] (call_timer_fn.constprop.6) from [<c038c6d0>] (run_timer_softirq+0x1f8/0x498)
755 Wed Jan 15 15:28:59 2025 kern.warn kernel: [  377.287202] [<c038c6d0>] (run_timer_softirq) from [<c0301478>] (__do_softirq+0x120/0x2ac)
756 Wed Jan 15 15:28:59 2025 kern.warn kernel: [  377.296577] [<c0301478>] (__do_softirq) from [<c0329330>] (irq_exit+0xac/0xd0)
757 Wed Jan 15 15:28:59 2025 kern.warn kernel: [  377.304872] [<c0329330>] (irq_exit) from [<c0372be0>] (__handle_domain_irq+0x60/0xb4)
758 Wed Jan 15 15:28:59 2025 kern.warn kernel: [  377.311975] [<c0372be0>] (__handle_domain_irq) from [<c0301344>] (gic_handle_irq+0x80/0x94)
759 Wed Jan 15 15:28:59 2025 kern.warn kernel: [  377.319873] [<c0301344>] (gic_handle_irq) from [<c0300b4c>] (__irq_svc+0x6c/0x90)
760 Wed Jan 15 15:28:59 2025 kern.warn kernel: [  377.327991] Exception stack(0xc1067f58 to 0xc1067fa0)
761 Wed Jan 15 15:28:59 2025 kern.warn kernel: [  377.335629] 7f40:                                                       00000000 000a9b58
762 Wed Jan 15 15:28:59 2025 kern.warn kernel: [  377.340674] 7f60: cfd60584 c0313160 ffffe000 c0d04f18 c0d04f58 00000008 00000000 c0d0f008
763 Wed Jan 15 15:28:59 2025 kern.warn kernel: [  377.348835] 7f80: 00000000 c0c46fe8 c0d04fd0 c1067fa8 c03075b8 c03075bc 60000013 ffffffff
764 Wed Jan 15 15:28:59 2025 kern.warn kernel: [  377.357001] [<c0300b4c>] (__irq_svc) from [<c03075bc>] (arch_cpu_idle+0x38/0x3c)
765 Wed Jan 15 15:28:59 2025 kern.warn kernel: [  377.365156] [<c03075bc>] (arch_cpu_idle) from [<c0946c90>] (default_idle_call+0x2c/0x3c)
766 Wed Jan 15 15:28:59 2025 kern.warn kernel: [  377.372620] [<c0946c90>] (default_idle_call) from [<c034f860>] (do_idle+0x1e4/0x208)
767 Wed Jan 15 15:28:59 2025 kern.warn kernel: [  377.380693] [<c034f860>] (do_idle) from [<c034fb20>] (cpu_startup_entry+0x18/0x1c)
768 Wed Jan 15 15:28:59 2025 kern.warn kernel: [  377.388416] [<c034fb20>] (cpu_startup_entry) from [<803016ac>] (0x803016ac)
769 Wed Jan 15 15:28:59 2025 kern.warn kernel: [  377.395832] ---[ end trace 9a20b129727efc2e ]---

After that, modem was gone and UI showed N/A everywhere:

After that i monitored log some more, and i saw modem (sort of) reappear and several different errors were logged:

872 Wed Jan 15 15:30:15 2025 kern.info kernel: [  453.534983] usb 2-1: new SuperSpeed Gen 1 USB device number 4 using xhci-hcd
873 Wed Jan 15 15:30:15 2025 kern.info kernel: [  453.714016] option 2-1:1.0: GSM modem (1-port) converter detected
874 Wed Jan 15 15:30:15 2025 kern.info kernel: [  453.714361] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB0
875 Wed Jan 15 15:30:15 2025 kern.info kernel: [  453.719998] option 2-1:1.1: GSM modem (1-port) converter detected
876 Wed Jan 15 15:30:15 2025 kern.info kernel: [  453.726380] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB1
877 Wed Jan 15 15:30:15 2025 kern.info kernel: [  453.733266] option 2-1:1.2: GSM modem (1-port) converter detected
878 Wed Jan 15 15:30:15 2025 kern.info kernel: [  453.739324] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB2
879 Wed Jan 15 15:30:15 2025 kern.info kernel: [  453.745672] option 2-1:1.3: GSM modem (1-port) converter detected
880 Wed Jan 15 15:30:15 2025 kern.info kernel: [  453.751950] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB3
881 Wed Jan 15 15:30:15 2025 kern.info kernel: [  453.774246] qmi_wwan 2-1:1.4: cdc-wdm0: USB WDM device
882 Wed Jan 15 15:30:15 2025 kern.warn kernel: [  453.774462] QMI_WWAN: extending urb size to 31744
883 Wed Jan 15 15:30:15 2025 kern.info kernel: [  453.779706] qmi_wwan 2-1:1.4 wwan0: register 'qmi_wwan' at usb-xhci-hcd.0.auto-1, WWAN/QMI device, 62:50:5a:2c:6c:fe
884 Wed Jan 15 15:30:15 2025 user.warn kernel: [  453.818193] [01-serial-symlink.sh] New device ttyUSB0 at /devices/platform/soc/8af8800.usb3/8a00000.dwc3/xhci-hcd.0.auto/usb2/2-1/2-1:1.0/ttyUSB0/tty/ttyUSB0 appeared!
885 Wed Jan 15 15:30:15 2025 user.warn kernel: [  453.971057] [01-serial-symlink.sh] New device ttyUSB1 at /devices/platform/soc/8af8800.usb3/8a00000.dwc3/xhci-hcd.0.auto/usb2/2-1/2-1:1.1/ttyUSB1/tty/ttyUSB1 appeared!
886 Wed Jan 15 15:30:15 2025 user.warn kernel: [  454.125602] [01-serial-symlink.sh] New device ttyUSB2 at /devices/platform/soc/8af8800.usb3/8a00000.dwc3/xhci-hcd.0.auto/usb2/2-1/2-1:1.2/ttyUSB2/tty/ttyUSB2 appeared!
887 Wed Jan 15 15:30:16 2025 user.warn kernel: [  454.281374] [01-serial-symlink.sh] New device ttyUSB3 at /devices/platform/soc/8af8800.usb3/8a00000.dwc3/xhci-hcd.0.auto/usb2/2-1/2-1:1.3/ttyUSB3/tty/ttyUSB3 appeared!
888 Wed Jan 15 15:30:30 2025 daemon.info gsmd[2119]: [ubus_notify_event:299] error: [MODEM_UBUS] Failed to send ubus notify for `2-1 [2c7c:0800]` modem!
889 Wed Jan 15 15:30:31 2025 daemon.info mobifd: [gsm.modem0] Starting modem settings init
890 Wed Jan 15 15:30:31 2025 daemon.err mobifd: [gsm.modem0] GSM error in "generic_mbn_autosel_cb:163" (Failed to parse response), gsmd_method_id: "30"
891 Wed Jan 15 15:30:34 2025 daemon.info mobifd: [gsm.modem0] SIM is ready
892 Wed Jan 15 15:30:34 2025 daemon.err mobifd: [gsm.modem0] GSM error in "generic_mbn_get_cfg_cb:206" (Failed to parse response), gsmd_method_id: "26"
893 Wed Jan 15 15:30:37 2025 daemon.err mobifd: [gsm.modem0] Init 'mbn' failed. Retrying
894 Wed Jan 15 15:30:37 2025 daemon.err mobifd: [gsm.modem0] GSM error in "generic_mbn_get_cfg_cb:206" (Failed to parse response), gsmd_method_id: "26"
895 Wed Jan 15 15:30:40 2025 daemon.err mobifd: [gsm.modem0] Init 'mbn' failed. Retrying
896 Wed Jan 15 15:30:40 2025 daemon.err mobifd: [gsm.modem0] GSM error in "generic_mbn_get_cfg_cb:206" (Failed to parse response), gsmd_method_id: "26"
897 Wed Jan 15 15:30:43 2025 daemon.err mobifd: [gsm.modem0] Init 'mbn' failed. Retrying
898 Wed Jan 15 15:30:43 2025 daemon.err mobifd: [gsm.modem0] GSM error in "generic_mbn_get_cfg_cb:206" (Failed to parse response), gsmd_method_id: "26"
899 Wed Jan 15 15:30:46 2025 daemon.info mobifd: [gsm.modem0] Using last known good MBN
900 Wed Jan 15 15:30:46 2025 daemon.info mobifd: [gsm.modem0] Will attempt to change MBN and reload the modem
901 Wed Jan 15 15:30:46 2025 daemon.err mobifd: [gsm.modem0] Failed to set MBN selection
902 Wed Jan 15 15:30:46 2025 daemon.crit mobifd: [gsm.modem0] Modem will be restarted due to a change in settings
903 Wed Jan 15 15:30:51 2025 kern.info kernel: [  490.006101] usb 2-1: USB disconnect, device number 4
904 Wed Jan 15 15:30:51 2025 kern.info kernel: [  490.006510] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0
905 Wed Jan 15 15:30:51 2025 kern.info kernel: [  490.010382] option 2-1:1.0: device disconnected
906 Wed Jan 15 15:30:51 2025 kern.info kernel: [  490.018729] option1 ttyUSB1: GSM modem (1-port) converter now disconnected from ttyUSB1
907 Wed Jan 15 15:30:51 2025 kern.info kernel: [  490.022569] option 2-1:1.1: device disconnected
908 Wed Jan 15 15:30:51 2025 kern.info kernel: [  490.031566] option1 ttyUSB2: GSM modem (1-port) converter now disconnected from ttyUSB2
909 Wed Jan 15 15:30:51 2025 kern.info kernel: [  490.035297] option 2-1:1.2: device disconnected
910 Wed Jan 15 15:30:51 2025 kern.info kernel: [  490.043547] option1 ttyUSB3: GSM modem (1-port) converter now disconnected from ttyUSB3
911 Wed Jan 15 15:30:51 2025 kern.info kernel: [  490.047936] option 2-1:1.3: device disconnected
912 Wed Jan 15 15:30:51 2025 kern.info kernel: [  490.056018] qmi_wwan 2-1:1.4 wwan0: unregister 'qmi_wwan' usb-xhci-hcd.0.auto-1, WWAN/QMI device
913 Wed Jan 15 15:30:51 2025 user.warn kernel: [  490.085689] [01-serial-symlink.sh] New device ttyUSB0 at /devices/platform/soc/8af8800.usb3/8a00000.dwc3/xhci-hcd.0.auto/usb2/2-1/2-1:1.0/ttyUSB0/tty/ttyUSB0 appeared!
914 Wed Jan 15 15:30:51 2025 user.warn kernel: [  490.247768] [01-serial-symlink.sh] New device ttyUSB1 at /devices/platform/soc/8af8800.usb3/8a00000.dwc3/xhci-hcd.0.auto/usb2/2-1/2-1:1.1/ttyUSB1/tty/ttyUSB1 appeared!
915 Wed Jan 15 15:30:52 2025 user.warn kernel: [  490.409567] [01-serial-symlink.sh] New device ttyUSB2 at /devices/platform/soc/8af8800.usb3/8a00000.dwc3/xhci-hcd.0.auto/usb2/2-1/2-1:1.2/ttyUSB2/tty/ttyUSB2 appeared!
916 Wed Jan 15 15:30:52 2025 user.warn kernel: [  490.566833] [01-serial-symlink.sh] New device ttyUSB3 at /devices/platform/soc/8af8800.usb3/8a00000.dwc3/xhci-hcd.0.auto/usb2/2-1/2-1:1.3/ttyUSB3/tty/ttyUSB3 appeared!
917 Wed Jan 15 15:30:58 2025 kern.notice kernel: User "admin" changed Simcard configuration in "/network/mobile/connection/cfg01aa0e" page
918 Wed Jan 15 15:30:59 2025 daemon.info mobifd: Service reload initiated
919 Wed Jan 15 15:31:02 2025 kern.info kernel: [  500.334994] usb 2-1: new SuperSpeed Gen 1 USB device number 5 using xhci-hcd
920 Wed Jan 15 15:31:02 2025 kern.info kernel: [  500.526895] option 2-1:1.0: GSM modem (1-port) converter detected
921 Wed Jan 15 15:31:02 2025 kern.info kernel: [  500.527222] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB0
922 Wed Jan 15 15:31:02 2025 kern.info kernel: [  500.533128] option 2-1:1.1: GSM modem (1-port) converter detected
923 Wed Jan 15 15:31:02 2025 kern.info kernel: [  500.539323] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB1
924 Wed Jan 15 15:31:02 2025 kern.info kernel: [  500.545755] option 2-1:1.2: GSM modem (1-port) converter detected
925 Wed Jan 15 15:31:02 2025 kern.info kernel: [  500.552514] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB2
926 Wed Jan 15 15:31:02 2025 kern.info kernel: [  500.558626] option 2-1:1.3: GSM modem (1-port) converter detected
927 Wed Jan 15 15:31:02 2025 kern.info kernel: [  500.565134] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB3
928 Wed Jan 15 15:31:02 2025 kern.info kernel: [  500.591882] qmi_wwan 2-1:1.4: cdc-wdm0: USB WDM device
929 Wed Jan 15 15:31:02 2025 kern.warn kernel: [  500.592211] QMI_WWAN: extending urb size to 31744
930 Wed Jan 15 15:31:02 2025 kern.info kernel: [  500.597391] qmi_wwan 2-1:1.4 wwan0: register 'qmi_wwan' at usb-xhci-hcd.0.auto-1, WWAN/QMI device, fa:c7:0c:47:2d:44
931 Wed Jan 15 15:31:02 2025 user.warn kernel: [  500.639363] [01-serial-symlink.sh] New device ttyUSB0 at /devices/platform/soc/8af8800.usb3/8a00000.dwc3/xhci-hcd.0.auto/usb2/2-1/2-1:1.0/ttyUSB0/tty/ttyUSB0 appeared!
932 Wed Jan 15 15:31:02 2025 user.warn kernel: [  500.839656] [01-serial-symlink.sh] New device ttyUSB1 at /devices/platform/soc/8af8800.usb3/8a00000.dwc3/xhci-hcd.0.auto/usb2/2-1/2-1:1.1/ttyUSB1/tty/ttyUSB1 appeared!
933 Wed Jan 15 15:31:02 2025 user.warn kernel: [  500.996611] [01-serial-symlink.sh] New device ttyUSB2 at /devices/platform/soc/8af8800.usb3/8a00000.dwc3/xhci-hcd.0.auto/usb2/2-1/2-1:1.2/ttyUSB2/tty/ttyUSB2 appeared!
934 Wed Jan 15 15:31:02 2025 user.warn kernel: [  501.150275] [01-serial-symlink.sh] New device ttyUSB3 at /devices/platform/soc/8af8800.usb3/8a00000.dwc3/xhci-hcd.0.auto/usb2/2-1/2-1:1.3/ttyUSB3/tty/ttyUSB3 appeared!

After that, UI showed weird things:

And router tried and tried to restart connection again and again, but it failed every time.
Since at this point, modem was (sort of) available, i managed to set config back to 4G only, but even that did not resulted succsessfull connection.
Only thing that helped was reboot, and after that (4G) connection was made, and everything worked again.

Conclusion: this in not signal issue, since close to tower, singal was very good.

I did not test router in its stationary place with antennas that came with router, since there was no point of doing that after test that was made close to tower resulted same behaviour as “low signal” in routers stationary location.

At this point, i’m thinking that we can also rule out SIM issues, since that SIM worked with Nokia router on 5G network.
edit: forgot to mention, that i tested router with different SIM also (same operator), results were same - no 5G connection.

Only thing that i can test more is to switch operator.
In that same tower, tere is also 5G offered by other operator (Telia), but i have to get Telia SIM first, so it will take some time.

iBoucher · January 15, 2025, 8:42pm

Hi, could.you please test with standard antennas? It can cause this too, better to know that antennas is not a root cause for this.

38rq1 · January 16, 2025, 8:13am

I did test it with standard antennas close to cell tower where signal was good.

Marija · January 16, 2025, 11:13am

Hello,

I have sent you a form to fill out. Once completed, I will contact you privately regarding this issue. Please use “11750” as the ticket ID.

Best regards,

38rq1 · January 16, 2025, 5:24pm

Update:

Bought prepaid SIM that works on Telia EE (24801) network.

And this SIM works without problems. Signal is not the best, DL is about 60Mbit/s and UL is about 10Mbit/s.

This Telia sim is now in socket 2.
Previously i tested this socket also with Tele2 EE SIM, but result was same as if Tele2 EE SIM was in socket1.

Now i’m suspecting those Tele2 SIMs. Both SIMs are about same age (~4y).
Maybe i will exhange one of them to newer one.
Also, in next week i’ll get another operator (Elisa) SIM for testing.

Marija · January 17, 2025, 6:47am

Hello,

Thank you for the information. Please let me know once you replace the SIMs and how it goes. If you need further assistance, we will proceed accordingly.

Best regards,

38rq1 · January 17, 2025, 11:29am

Hi Marija

Got Tele2 replacement sim, but result is same, no 5G connection.
First connection after switching on 5G shows that it is connected (nothing goes trough), and after that, modem is gone, then reappears and then is unable to connect anywhere.

Did two tries (reboots), only thing that it is different is that i did not see that qmi_wwan module failure in logs, but with old sim, i did not see that every time also.

Marija · January 17, 2025, 11:54am

Hello,

Thank you for trying a different SIM. You will receive an email from us shortly.

Best regards,

38rq1 · January 18, 2025, 2:20pm

Small update:

Got different Tele2 SIM, looks completely different, maybe other manufacturer or different batch, idk.
But result is same, as soon as i switch on 5G, no more internet.
And in this case that module problem was again in log:

789 Sat Jan 18 15:41:55 2025 daemon.info dnsmasq[1932]: read /etc/hosts - 12 names
790 Sat Jan 18 15:41:55 2025 daemon.info dnsmasq[1932]: read /tmp/hosts/dhcp.cfg01411c - 4 names
791 Sat Jan 18 15:41:55 2025 daemon.info dnsmasq-dhcp[1932]: read /etc/ethers - 0 addresses
792 Sat Jan 18 15:42:02 2025 kern.warn kernel: [  282.074755] ------------[ cut here ]------------
793 Sat Jan 18 15:42:02 2025 kern.warn kernel: [  282.074838] WARNING: CPU: 0 PID: 0 at net/sched/sch_generic.c:468 dev_watchdog+0x28c/0x290
794 Sat Jan 18 15:42:02 2025 kern.info kernel: [  282.078478] NETDEV WATCHDOG: wwan0 (qmi_wwan): transmit queue 0 timed out

Got also third operator SIM (Elisa), but Elisa has so poor coverage here that only B20 is stable, other bands keep appearing sometimes, but they are useless, signal is so low that they dissapear after some seconds, also Elisa 5G coverage does not seem to reach here, so i was unable to test 5G on Elisa network.