RUTM51 stops forwarding / drops cellular connection

NETWORKING SOLUTIONS
1

I’ve got a RUTM51 that’s acting up. It’s running in passthrough mode.

It seems that it stops forwarding packages and drops the cellular connection a couple of times per day.
My onsite guy tells me that it stops responding to the management IP when this happens.

We might experience this when the 5G connection is under some load, but it’s not yet been confirmed.

RUTM51, RUTM5110XXXX
hw ver: 0404 batch: 0018
firmware: RUTM_R_00.07.14

modem: RG500U-EB
firmware: RG500UEBAAR03A02M4G_REL

have anyone seen this?
here’s logs that might be related to what’s happening:

Apr 27 12:50:43 RUTM51 kernel: [ 2107.094751] ------------[ cut here ]------------
Apr 27 12:50:43 RUTM51 kernel: [ 2107.099426] WARNING: CPU: 1 PID: 0 at net/sched/sch_generic.c:519 dev_watchdog+0x280/0x288
Apr 27 12:50:43 RUTM51 kernel: [ 2107.107699] NETDEV WATCHDOG: usb0 (cdc_ncm): transmit queue 0 timed out 5350 ms
Apr 27 12:50:43 RUTM51 kernel: [ 2107.115317] Modules linked in: xt_connlimit pppoe ppp_async option nf_conncount l2tp_ppp iptable_nat xt_state xt_nat xt_helper xt_conntrack xt_connmark xt_connbytes xt_REDIRECT xt_MASQUERADE xt_FLOWOFFLOAD xt_CT usb_wwan qmi_wwan pptp pppox ppp_mppe ppp_generic pl2303 nft_redir nft_ct nf_nat_tftp nf_nat_snmp_basic nf_nat_sip nf_nat_pptp nf_nat_irc nf_nat_h323 nf_nat_ftp nf_nat_amanda nf_nat nf_flow_table 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 nf_conntrack_amanda nf_conntrack mt7615e mt7615_common mt76_connac_lib mt76 mac80211 ipt_REJECT ftdi_sio ebtable_nat ebtable_filter ebtable_broute cypress_m8 cp210x ch341 cfg80211 cdc_ncm cdc_ether belkin_sa ark3116 xt_time xt_tcpudp xt_tcpmss xt_statistic xt_recent xt_policy xt_multiport xt_mark xt_mac xt_limit xt_length xt_hl xt_hashlimit xt_esp xt_ecn xt_dscp xt_coova xt_comment xt_TCPMSS xt_NFLOG xt_LOG xt_HL xt_DSCP
Apr 27 12:50:43 RUTM51 kernel: [ 2107.115735]  xt_CLASSIFY xfrm_interface wireguard usbserial usbnet ts_kmp ts_fsm ts_bm tla202X slhc sch_cake rfcomm nft_reject_ipv6 nft_reject_ipv4 nft_reject_inet nft_reject nft_quota nft_objref nft_numgen nft_log nft_limit nft_hash nft_fwd_netdev nft_dup_netdev nft_counter nfnetlink_log nf_tables nf_reject_ipv4 nf_log_ipv6 nf_log_ipv4 nf_log_common nf_dup_netdev nf_defrag_ipv6 nf_defrag_ipv4 libcurve25519_generic libcrc32c libchacha20poly1305 iptable_raw iptable_mangle iptable_filter ipt_ah ipt_ECN ip6table_raw ip_tables hwmon hidp hci_uart exfat ebtables ebt_vlan ebt_stp ebt_redirect ebt_pkttype ebt_mark_m ebt_mark ebt_limit ebt_among ebt_802_3 compat cls_flower ch343 cdc_wdm cdc_acm btusb btrtl btintel bnep bluetooth asn1_decoder pulse_counter tlt_fsb 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 tlt_gpio xt_set ip_set_list_set ip_set_hash_netportnet ip_set_hash_netport
Apr 27 12:50:43 RUTM51 kernel: [ 2107.203852]  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 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 crypto_hw_eip93 des_generic libdes cmac usb_storage spi_gpio spi_bitbang gpio_74x164 xhci_plat_hcd xhci_pci xhci_mtk xhci_hcd sd_mod scsi_mod tpm_tis_i2c gpio_button_hotplug ext4 mbcache jbd2 tpm_tis_core mii crc32c_generic
Apr 27 12:50:43 RUTM51 kernel: [ 2107.369812] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.10.234 #0
Apr 27 12:50:44 RUTM51 kernel: [ 2107.376112] Stack : 807f6c68 ffffffff 80910000 8008584c 80910000 807f7bfc 00000000 00000000
Apr 27 12:50:44 RUTM51 kernel: [ 2107.384478]         8140ddac 80a70000 8143cbd0 8089ee47 807c41b8 00000001 8140dd50 24930732
Apr 27 12:50:44 RUTM51 kernel: [ 2107.392828]         00000000 00000000 807c41b8 8140dbf0 ffffefff 8090896c 00000000 00000000
Apr 27 12:50:44 RUTM51 kernel: [ 2107.401179]         00000000 00000068 00000000 0005a494 00000000 80910000 00000000 807c0000
Apr 27 12:50:44 RUTM51 kernel: [ 2107.409528]         00000009 000014e6 00000122 ffffffff 00000018 8041489c 00000004 80a70004
Apr 27 12:50:44 RUTM51 kernel: [ 2107.417881]         ...
Apr 27 12:50:44 RUTM51 kernel: [ 2107.420324] Call Trace:
Apr 27 12:50:44 RUTM51 kernel: [ 2107.422785] [<80008108>] show_stack+0x30/0x100
Apr 27 12:50:44 RUTM51 kernel: [ 2107.427219] [<803927d4>] dump_stack+0xa4/0xe0
Apr 27 12:50:44 RUTM51 kernel: [ 2107.431577] [<800304cc>] __warn+0xb0/0xd8
Apr 27 12:50:44 RUTM51 kernel: [ 2107.435578] [<80030580>] warn_slowpath_fmt+0x8c/0xac
Apr 27 12:50:44 RUTM51 kernel: [ 2107.440544] [<80587d80>] dev_watchdog+0x280/0x288
Apr 27 12:50:44 RUTM51 kernel: [ 2107.445239] [<800a38d8>] call_timer_fn.isra.30+0x20/0x90
Apr 27 12:50:44 RUTM51 kernel: [ 2107.450531] [<800a42a8>] run_timer_softirq+0x22c/0x4d8
Apr 27 12:50:44 RUTM51 kernel: [ 2107.455655] [<8070c58c>] __do_softirq+0x16c/0x334
Apr 27 12:50:44 RUTM51 kernel: [ 2107.460345] [<800351a0>] irq_exit+0xc4/0xec
Apr 27 12:50:44 RUTM51 kernel: [ 2107.464521] [<803acf9c>] plat_irq_dispatch+0x64/0x104
Apr 27 12:50:44 RUTM51 kernel: [ 2107.469555] [<80003548>] except_vec_vi_end+0xb8/0xc4
Apr 27 12:50:44 RUTM51 kernel: [ 2107.474512] [<804d4fd0>] cpuidle_enter_state_coupled+0x3b0/0x500
Apr 27 12:50:44 RUTM51 kernel: [ 2107.480509] [<804d27f0>] cpuidle_enter+0x54/0xac
Apr 27 12:50:44 RUTM51 kernel: [ 2107.485120] [<80060860>] do_idle+0x268/0x2d8
Apr 27 12:50:44 RUTM51 kernel: [ 2107.489373] [<80060b48>] cpu_startup_entry+0x2c/0x34
Apr 27 12:50:44 RUTM51 kernel: [ 2107.494319] [<80004f34>] mips_cpuidle_wait_enter+0x24/0x50
Apr 27 12:50:44 RUTM51 kernel: [ 2107.499787]
Apr 27 12:50:44 RUTM51 kernel: [ 2107.501646] ---[ end trace c7dd4e903c928b90 ]---
Apr 27 12:51:33 RUTM51 network: IPv4 connectivity started to fail
2

Okay, so this happened again.
it seems that the device is responsive on internal ip.

The device indicate that Mobile connection is Down.
Tried disabling/enabling the mobile device without any difference.
Tried configure/reconfigure the APN i use, without any difference.

Now it stays disconnected even after reboot. I’ll update the post with new information if anything changes.


Apr 27 18:03:27 RUTM51 kernel: [ 2829.103581] ------------[ cut here ]------------
Apr 27 18:03:27 RUTM51 kernel: [ 2829.108248] WARNING: CPU: 0 PID: 0 at net/sched/sch_generic.c:519 dev_watchdog+0x280/0x288
Apr 27 18:03:27 RUTM51 kernel: [ 2829.116518] NETDEV WATCHDOG: usb0 (cdc_ncm): transmit queue 0 timed out 7690 ms
Apr 27 18:03:27 RUTM51 kernel: [ 2829.123809] Modules linked in: xt_connlimit pppoe ppp_async option nf_conncount l2tp_ppp iptable_nat xt_state xt_nat xt_helper xt_conntrack xt_connmark xt_connbytes xt_REDIRECT xt_MASQUERADE xt_FLOWOFFLOAD xt_CT usb_wwan qmi_wwan pptp pppox ppp_mppe ppp_generic pl2303 nft_redir nft_ct nf_nat_tftp nf_nat_snmp_basic nf_nat_sip nf_nat_pptp nf_nat_irc nf_nat_h323 nf_nat_ftp nf_nat_amanda nf_nat nf_flow_table 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 nf_conntrack_amanda nf_conntrack mt7615e mt7615_common mt76_connac_lib mt76 mac80211 ipt_REJECT ftdi_sio ebtable_nat ebtable_filter ebtable_broute cypress_m8 cp210x ch341 cfg80211 cdc_ncm cdc_ether belkin_sa ark3116 xt_time xt_tcpudp xt_tcpmss xt_statistic xt_recent xt_policy xt_multiport xt_mark xt_mac xt_limit xt_length xt_hl xt_hashlimit xt_esp xt_ecn xt_dscp xt_coova xt_comment xt_TCPMSS xt_NFLOG xt_LOG xt_HL xt_DSCP
Apr 27 18:03:27 RUTM51 kernel: [ 2829.124212]  xt_CLASSIFY xfrm_interface wireguard usbserial usbnet ts_kmp ts_fsm ts_bm tla202X slhc sch_cake rfcomm nft_reject_ipv6 nft_reject_ipv4 nft_reject_inet nft_reject nft_quota nft_objref nft_numgen nft_log nft_limit nft_hash nft_fwd_netdev nft_dup_netdev nft_counter nfnetlink_log nf_tables nf_reject_ipv4 nf_log_ipv6 nf_log_ipv4 nf_log_common nf_dup_netdev nf_defrag_ipv6 nf_defrag_ipv4 libcurve25519_generic libcrc32c libchacha20poly1305 iptable_raw iptable_mangle iptable_filter ipt_ah ipt_ECN ip6table_raw ip_tables hwmon hidp hci_uart exfat ebtables ebt_vlan ebt_stp ebt_redirect ebt_pkttype ebt_mark_m ebt_mark ebt_limit ebt_among ebt_802_3 compat cls_flower ch343 cdc_wdm cdc_acm btusb btrtl btintel bnep bluetooth asn1_decoder pulse_counter tlt_fsb 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 tlt_gpio xt_set ip_set_list_set ip_set_hash_netportnet ip_set_hash_netport
Apr 27 18:03:27 RUTM51 kernel: [ 2829.211472]  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 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 crypto_hw_eip93 des_generic libdes cmac usb_storage spi_gpio spi_bitbang gpio_74x164 xhci_plat_hcd xhci_pci xhci_mtk xhci_hcd sd_mod scsi_mod tpm_tis_i2c gpio_button_hotplug ext4 mbcache jbd2 tpm_tis_core mii crc32c_generic
Apr 27 18:03:27 RUTM51 kernel: [ 2829.377056] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.10.234 #0
Apr 27 18:03:27 RUTM51 kernel: [ 2829.383123] Stack : 807f6c68 ffffffff 80910000 8008584c 80910000 807f7bfc 00000000 00000000
Apr 27 18:03:27 RUTM51 kernel: [ 2829.391470]         8140bdac 80a70000 8089f330 8089ee47 807c41b8 00000001 8140bd50 2fcc9786
Apr 27 18:03:27 RUTM51 kernel: [ 2829.399818]         00000000 00000000 807c41b8 8140bbf0 ffffefff 8090896c 00000000 00000000
Apr 27 18:03:27 RUTM51 kernel: [ 2829.408163]         00000000 0000008c 00000000 0005c0e0 00000000 80910000 00000000 807c0000
Apr 27 18:03:27 RUTM51 kernel: [ 2829.416508]         00000009 00001e0a 00000122 ffffffff 00000018 8041489c 00000000 80a70000
Apr 27 18:03:27 RUTM51 kernel: [ 2829.424853]         ...
Apr 27 18:03:27 RUTM51 kernel: [ 2829.427294] Call Trace:
Apr 27 18:03:27 RUTM51 kernel: [ 2829.429752] [<80008108>] show_stack+0x30/0x100
Apr 27 18:03:27 RUTM51 kernel: [ 2829.434184] [<803927d4>] dump_stack+0xa4/0xe0
Apr 27 18:03:27 RUTM51 kernel: [ 2829.438541] [<800304cc>] __warn+0xb0/0xd8
Apr 27 18:03:27 RUTM51 kernel: [ 2829.442534] [<80030580>] warn_slowpath_fmt+0x8c/0xac
Apr 27 18:03:27 RUTM51 kernel: [ 2829.447493] [<80587d80>] dev_watchdog+0x280/0x288
Apr 27 18:03:27 RUTM51 kernel: [ 2829.452185] [<800a38d8>] call_timer_fn.isra.30+0x20/0x90
Apr 27 18:03:27 RUTM51 kernel: [ 2829.457477] [<800a42a8>] run_timer_softirq+0x22c/0x4d8
Apr 27 18:03:27 RUTM51 kernel: [ 2829.462595] [<8070c58c>] __do_softirq+0x16c/0x334
Apr 27 18:03:27 RUTM51 kernel: [ 2829.467283] [<800351a0>] irq_exit+0xc4/0xec
Apr 27 18:03:27 RUTM51 kernel: [ 2829.471460] [<803acf9c>] plat_irq_dispatch+0x64/0x104
Apr 27 18:03:27 RUTM51 kernel: [ 2829.476491] [<80003548>] except_vec_vi_end+0xb8/0xc4
Apr 27 18:03:27 RUTM51 kernel: [ 2829.481446] [<804d4fd0>] cpuidle_enter_state_coupled+0x3b0/0x500
Apr 27 18:03:27 RUTM51 kernel: [ 2829.487429] [<804d27f0>] cpuidle_enter+0x54/0xac
Apr 27 18:03:27 RUTM51 kernel: [ 2829.492030] [<80060860>] do_idle+0x268/0x2d8
Apr 27 18:03:27 RUTM51 kernel: [ 2829.496284] [<80060b40>] cpu_startup_entry+0x24/0x34
Apr 27 18:03:27 RUTM51 kernel: [ 2829.501231] [<8092bd38>] start_kernel+0x590/0x5b8
Apr 27 18:03:27 RUTM51 kernel: [ 2829.505917]
Apr 27 18:03:27 RUTM51 kernel: [ 2829.507492] ---[ end trace 38b48b05ba3910cf ]---
Apr 27 18:03:49 RUTM51 network: IPv4 connectivity started to fail
Apr 27 18:04:19 RUTM51 netifd: mob1s1a1 (9181): Command failed: Request timed out
Apr 27 18:04:20 RUTM51 kernel: [ 2881.743936] usb 2-1: USB disconnect, device number 2
Apr 27 18:04:20 RUTM51 kernel: [ 2881.749135] cdc_ncm 2-1:1.0 usb0: unregister 'cdc_ncm' usb-1e1c0000.xhci-1, CDC NCM
Apr 27 18:04:20 RUTM51 netifd: Network device 'usb0' link is down
Apr 27 18:04:20 RUTM51 netifd: Interface 'mob1s1a1_4' has link connectivity loss
Apr 27 18:04:20 RUTM51 netifd: Interface 'mob1s1a1_4' is now down
Apr 27 18:04:20 RUTM51 kernel: [ 2882.034974] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0
Apr 27 18:04:20 RUTM51 kernel: [ 2882.043234] option 2-1:1.2: device disconnected
Apr 27 18:04:20 RUTM51 kernel: [ 2882.048674] option1 ttyUSB1: GSM modem (1-port) converter now disconnected from ttyUSB1
Apr 27 18:04:20 RUTM51 kernel: [ 2882.057124] option 2-1:1.3: device disconnected
Apr 27 18:04:20 RUTM51 kernel: [ 2882.114110] option1 ttyUSB2: GSM modem (1-port) converter now disconnected from ttyUSB2
Apr 27 18:04:20 RUTM51 kernel: [ 2882.122453] option 2-1:1.4: device disconnected
Apr 27 18:04:20 RUTM51 kernel: [ 2882.127917] option1 ttyUSB3: GSM modem (1-port) converter now disconnected from ttyUSB3
Apr 27 18:04:20 RUTM51 kernel: [ 2882.136259] option 2-1:1.5: device disconnected
Apr 27 18:04:20 RUTM51 kernel: [ 2882.141643] option1 ttyUSB4: GSM modem (1-port) converter now disconnected from ttyUSB4
Apr 27 18:04:20 RUTM51 kernel: [ 2882.149989] option 2-1:1.6: device disconnected
Apr 27 18:04:20 RUTM51 kernel: [ 2882.419607] [01-serial-symlink.sh] New device ttyUSB0 at /devices/platform/1e1c0000.xhci/usb2/2-1/2-1:1.2/ttyUSB0/tty/ttyUSB0 appeared!
Apr 27 18:04:20 RUTM51 netifd: mob1s1a1 (16682): Stopping network mob1s1a1
Apr 27 18:04:20 RUTM51 kernel: [ 2882.718765] [01-serial-symlink.sh] New device ttyUSB1 at /devices/platform/1e1c0000.xhci/usb2/2-1/2-1:1.3/ttyUSB1/tty/ttyUSB1 appeared!
Apr 27 18:04:21 RUTM51 gsmd[4500]: [__write:1300] warning: [CMM] Write to `2-1 [2c7c:0900]` modem failed: errno 5
Apr 27 18:04:21 RUTM51 gsmd[4500]: [common_write_handle:224] warning: [CMM] Failed to send command (0/13 bytes transferred) to `2-1 [2c7c:0900]` modem!
Apr 27 18:04:21 RUTM51 kernel: [ 2883.039438] [01-serial-symlink.sh] New device ttyUSB2 at /devices/platform/1e1c0000.xhci/usb2/2-1/2-1:1.4/ttyUSB2/tty/ttyUSB2 appeared!
Apr 27 18:04:21 RUTM51 kernel: [ 2883.326215] [01-serial-symlink.sh] New device ttyUSB3 at /devices/platform/1e1c0000.xhci/usb2/2-1/2-1:1.5/ttyUSB3/tty/ttyUSB3 appeared!
Apr 27 18:04:21 RUTM51 kernel: [ 2883.599715] [01-serial-symlink.sh] New device ttyUSB4 at /devices/platform/1e1c0000.xhci/usb2/2-1/2-1:1.6/ttyUSB4/tty/ttyUSB4 appeared!
3

Here’s an update:

i unloaded and loaded the xhci_pci kernel module,
and then i ran the reboot_modem.sh script.

Now the connection established properly.

4

Another update.
Connection dropped again later during the evening:



Apr 26 23:10:40 RUTM51 network: IPv4 connectivity started to fail
Apr 26 23:10:59 RUTM51 kernel: [17500.032514] usb 2-1: USB disconnect, device number 8
Apr 26 23:10:59 RUTM51 kernel: [17500.037704] cdc_ncm 2-1:1.0 usb0: unregister 'cdc_ncm' usb-1e1c0000.xhci-1, CDC NCM
Apr 26 23:10:59 RUTM51 netifd: Network device 'usb0' link is down
Apr 26 23:10:59 RUTM51 netifd: Interface 'mob1s1a1_4' has link connectivity loss
Apr 26 23:10:59 RUTM51 netifd: Interface 'mob1s1a1_4' is now down
Apr 26 23:11:00 RUTM51 kernel: [17500.263673] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0
Apr 26 23:11:00 RUTM51 kernel: [17500.272207] option 2-1:1.2: device disconnected
Apr 26 23:11:00 RUTM51 kernel: [17500.277686] option1 ttyUSB1: GSM modem (1-port) converter now disconnected from ttyUSB1
Apr 26 23:11:00 RUTM51 kernel: [17500.286075] option 2-1:1.3: device disconnected
Apr 26 23:11:00 RUTM51 kernel: [17500.298131] option1 ttyUSB2: GSM modem (1-port) converter now disconnected from ttyUSB2
Apr 26 23:11:00 RUTM51 kernel: [17500.306615] option 2-1:1.4: device disconnected
Apr 26 23:11:00 RUTM51 kernel: [17500.311915] option1 ttyUSB3: GSM modem (1-port) converter now disconnected from ttyUSB3
Apr 26 23:11:00 RUTM51 kernel: [17500.320326] option 2-1:1.5: device disconnected
Apr 26 23:11:00 RUTM51 kernel: [17500.325720] option1 ttyUSB4: GSM modem (1-port) converter now disconnected from ttyUSB4
Apr 26 23:11:00 RUTM51 kernel: [17500.334196] option 2-1:1.6: device disconnected
Apr 26 23:11:00 RUTM51 kernel: [17500.695582] [01-serial-symlink.sh] New device ttyUSB0 at /devices/platform/1e1c0000.xhci/usb2/2-1/2-1:1.2/ttyUSB0/tty/ttyUSB0 appeared!
Apr 26 23:11:00 RUTM51 netifd: mob1s1a1 (15673): Stopping network mob1s1a1
Apr 26 23:11:00 RUTM51 kernel: [17501.021942] [01-serial-symlink.sh] New device ttyUSB1 at /devices/platform/1e1c0000.xhci/usb2/2-1/2-1:1.3/ttyUSB1/tty/ttyUSB1 appeared!
Apr 26 23:11:00 RUTM51 gsmd[4586]: [__write:1300] warning: [CMM] Write to `2-1 [2c7c:0900]` modem failed: errno 5
Apr 26 23:11:00 RUTM51 gsmd[4586]: [common_write_handle:224] warning: [CMM] Failed to send command (0/15 bytes transferred) to `2-1 [2c7c:0900]` modem!
Apr 26 23:11:01 RUTM51 gsmd[4586]: [__write:1300] warning: [CMM] Write to `2-1 [2c7c:0900]` modem failed: errno 5
Apr 26 23:11:01 RUTM51 gsmd[4586]: [common_write_handle:224] warning: [CMM] Failed to send command (0/15 bytes transferred) to `2-1 [2c7c:0900]` modem!
Apr 26 23:11:01 RUTM51 kernel: [17501.330013] [01-serial-symlink.sh] New device ttyUSB2 at /devices/platform/1e1c0000.xhci/usb2/2-1/2-1:1.4/ttyUSB2/tty/ttyUSB2 appeared!
Apr 26 23:11:01 RUTM51 kernel: [17501.599101] [01-serial-symlink.sh] New device ttyUSB3 at /devices/platform/1e1c0000.xhci/usb2/2-1/2-1:1.5/ttyUSB3/tty/ttyUSB3 appeared!
Apr 26 23:11:01 RUTM51 kernel: [17501.885443] [01-serial-symlink.sh] New device ttyUSB4 at /devices/platform/1e1c0000.xhci/usb2/2-1/2-1:1.6/ttyUSB4/tty/ttyUSB4 appeared!
Apr 26 23:11:01 RUTM51 dnsmasq[12405]: read /etc/hosts - 12 names
Apr 26 23:11:01 RUTM51 dnsmasq[12405]: read /tmp/hosts/dhcp.cfg01411c - 4 names
Apr 26 23:11:01 RUTM51 dnsmasq-dhcp[12405]: read /etc/ethers - 0 addresses
Apr 26 23:11:02 RUTM51 gsmd[4586]: [__write:1300] warning: [CMM] Write to `2-1 [2c7c:0900]` modem failed: errno 5
Apr 26 23:11:02 RUTM51 gsmd[4586]: [common_write_handle:224] warning: [CMM] Failed to send command (0/15 bytes transferred) to `2-1 [2c7c:0900]` modem!
Apr 26 23:11:02 RUTM51 network: Mobile data disconnected (internal modem)
Apr 26 23:11:03 RUTM51 dnsmasq[12405]: read /etc/hosts - 12 names
Apr 26 23:11:03 RUTM51 dnsmasq[12405]: read /tmp/hosts/dhcp.cfg01411c - 4 names
Apr 26 23:11:03 RUTM51 dnsmasq-dhcp[12405]: read /etc/ethers - 0 addresses
Apr 26 23:11:03 RUTM51 netifd: mob1s1a1 (15673): Command failed: Request timed out
Apr 26 23:11:03 RUTM51 netifd: mob1s1a1 (15673): Command failed: Not found
Apr 26 23:11:03 RUTM51 network: Mobile data disconnected (internal modem)
Apr 26 23:11:03 RUTM51 netifd: Interface 'mobile_bridge' is now down
Apr 26 23:11:03 RUTM51 netifd: Interface 'mobile_bridge' has link connectivity loss
Apr 26 23:11:15 RUTM51 kernel: [17515.732474] usb 2-1: new SuperSpeed Gen 1 USB device number 9 using xhci-mtk
Apr 26 23:11:15 RUTM51 kernel: [17515.783164] cdc_ncm 2-1:1.0: MAC-Address: ca:d9:13:78:09:f2
Apr 26 23:11:15 RUTM51 kernel: [17515.790426] cdc_ncm 2-1:1.0 usb0: register 'cdc_ncm' at usb-1e1c0000.xhci-1, CDC NCM, ca:d9:13:78:09:f2
Apr 26 23:11:15 RUTM51 kernel: [17515.802086] option 2-1:1.2: GSM modem (1-port) converter detected
Apr 26 23:11:15 RUTM51 kernel: [17515.808947] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB0
Apr 26 23:11:15 RUTM51 kernel: [17515.817980] option 2-1:1.3: GSM modem (1-port) converter detected
Apr 26 23:11:15 RUTM51 kernel: [17515.824946] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB1
Apr 26 23:11:15 RUTM51 kernel: [17515.834048] option 2-1:1.4: GSM modem (1-port) converter detected
Apr 26 23:11:15 RUTM51 kernel: [17515.841275] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB2
Apr 26 23:11:15 RUTM51 kernel: [17515.849815] option 2-1:1.5: GSM modem (1-port) converter detected
Apr 26 23:11:15 RUTM51 kernel: [17515.856677] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB3
Apr 26 23:11:15 RUTM51 kernel: [17515.865299] option 2-1:1.6: GSM modem (1-port) converter detected
Apr 26 23:11:15 RUTM51 kernel: [17515.872077] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB4
Apr 26 23:11:16 RUTM51 kernel: [17516.708891] [01-serial-symlink.sh] New device ttyUSB0 at /devices/platform/1e1c0000.xhci/usb2/2-1/2-1:1.2/ttyUSB0/tty/ttyUSB0 appeared!
Apr 26 23:11:16 RUTM51 kernel: [17516.908631] [01-serial-symlink.sh] New device ttyUSB1 at /devices/platform/1e1c0000.xhci/usb2/2-1/2-1:1.3/ttyUSB1/tty/ttyUSB1 appeared!
Apr 26 23:11:16 RUTM51 kernel: [17517.107729] [01-serial-symlink.sh] New device ttyUSB2 at /devices/platform/1e1c0000.xhci/usb2/2-1/2-1:1.4/ttyUSB2/tty/ttyUSB2 appeared!
Apr 26 23:11:17 RUTM51 kernel: [17517.306773] [01-serial-symlink.sh] New device ttyUSB3 at /devices/platform/1e1c0000.xhci/usb2/2-1/2-1:1.5/ttyUSB3/tty/ttyUSB3 appeared!
Apr 26 23:11:17 RUTM51 kernel: [17517.506173] [01-serial-symlink.sh] New device ttyUSB4 at /devices/platform/1e1c0000.xhci/usb2/2-1/2-1:1.6/ttyUSB4/tty/ttyUSB4 appeared!
Apr 26 23:11:22 RUTM51 gsmd[4586]: [ubus_notify_event:299] error: [MODEM_UBUS] Failed to send ubus notify for `2-1 [2c7c:0900]` modem!
Apr 26 23:11:22 RUTM51 mobifd: [gsm.modem0] Starting modem settings init
Apr 26 23:11:22 RUTM51 mobifd: [gsm.modem0] GSM error in "mb_generic_modem_cfun:1364" (Invalid response)
Apr 26 23:11:22 RUTM51 mobifd: [gsm.modem0] Failed to set CFUN: "2"(full)
Apr 26 23:11:22 RUTM51 kernel: SIM state changed to not inserted (internal modem)
Apr 26 23:11:40 RUTM51 mobifd: [gsm.modem0] Modem settings init completed
Apr 26 23:11:40 RUTM51 mobifd: [gsm.modem0] Starting connection setup
Apr 26 23:11:40 RUTM51 mobifd: [gsm.modem0] APN "IMS" isn't prepared for PDP "11", preparing it
Apr 26 23:11:40 RUTM51 mobifd: [gsm.modem0] GSM error in "set_pdp_ctx:169" (Invalid response)
Apr 26 23:11:40 RUTM51 mobifd: [gsm.modem0] Failed to set PDP "11" context
Apr 26 23:11:40 RUTM51 mobifd: [gsm.modem0] Failed to insert "IMS" APN
Apr 26 23:11:40 RUTM51 mobifd: [gsm.modem0] GSM error in "mb_reset_pdp_context:208" (Invalid response)
Apr 26 23:11:40 RUTM51 mobifd: [gsm.modem0] Failed to reset PDP context
Apr 26 23:11:40 RUTM51 mobifd: [gsm.modem0] Skipping "IMS" APN set
Apr 26 23:11:44 RUTM51 mobifd: [gsm.modem0] Attempting to establish connection to operator with "30s" of timeout
Apr 26 23:12:07 RUTM51 network: DNS resolution started to fail
Apr 26 23:12:44 RUTM51 mobifd: [gsm.modem0] Attempting to establish connection to operator with "60s" of timeout

it proceeds to try during the night:


Apr 26 23:15:40 RUTM51 mobifd: [gsm.modem0] Failed to get IP address from PDP context "1"
Apr 26 23:15:40 RUTM51 mobifd: [gsm.modem0] Modem is not attached to PS
Apr 26 23:15:40 RUTM51 mobifd: [gsm.modem0] Connection establishment timer set to "3600s"
Apr 26 23:15:40 RUTM51 mobifd: [gsm.modem0] Attempting to establish connection to operator with "3600s" of timeout
Apr 26 23:15:40 RUTM51 mobifd: [gsm.modem0] Connected to operator "24007"
Apr 26 23:15:41 RUTM51 mobifd: [gsm.modem0] -CFUN- Functionality: "Full"
Apr 26 23:15:41 RUTM51 mobifd: [gsm.modem0] -COPS- Mode: "Auto", operator: "24007"
Apr 26 23:15:41 RUTM51 mobifd: [gsm.modem0] -CREG- Mode: "Enabled (with location information)", status: "Emergency services only", LAC: "65534", cell ID: "88683827", technology: "E-UTRAN"
Apr 26 23:15:41 RUTM51 mobifd: [gsm.modem0] -CGREG- Mode: "Enabled (with location information)", status: "Not registered", LAC: "", cell ID: "", technology: "Unknown"
Apr 26 23:15:41 RUTM51 mobifd: [gsm.modem0] -CEREG- Mode: "Enabled (with location information)", status: "Emergency services only", LAC: "", cell ID: "88683827", technology: "E-UTRAN"
Apr 26 23:15:41 RUTM51 mobifd: [gsm.modem0] -C5GREG- Mode: "Enabled (with location information)", status: "Not registered", LAC: "", cell ID: "", technology: "Unknown"
Apr 26 23:15:41 RUTM51 mobifd: [gsm.modem0] Failed to get IP address from PDP context "1"
Apr 26 23:15:44 RUTM51 mobifd: [gsm.modem0] Failed to get IP address from PDP context "1"
Apr 26 23:15:47 RUTM51 mobifd: [gsm.modem0] Failed to get IP address from PDP context "1"
Apr 26 23:15:51 RUTM51 mobifd: [gsm.modem0] Failed to get IP address from PDP context "1"

after at scheduled reboot at 04:00 i see that the connection comes back,
but after a short while we see the connection stopping, and this call trace:

Apr 27 05:53:41 RUTM51 kernel: [ 6785.104522] ------------[ cut here ]------------
Apr 27 05:53:41 RUTM51 kernel: [ 6785.109198] WARNING: CPU: 1 PID: 0 at net/sched/sch_generic.c:519 dev_watchdog+0x280/0x288
Apr 27 05:53:41 RUTM51 kernel: [ 6785.117467] NETDEV WATCHDOG: usb0 (cdc_ncm): transmit queue 0 timed out 8400 ms
Apr 27 05:53:41 RUTM51 kernel: [ 6785.124795] Modules linked in: xt_connlimit pppoe ppp_async option nf_conncount l2tp_ppp iptable_nat xt_state xt_nat xt_helper xt_conntrack xt_connmark xt_connbytes xt_REDIRECT xt_MASQUERADE xt_FLOWOFFLOAD xt_CT usb_wwan qmi_wwan pptp pppox ppp_mppe ppp_generic pl2303 nft_redir nft_ct nf_nat_tftp nf_nat_snmp_basic nf_nat_sip nf_nat_pptp nf_nat_irc nf_nat_h323 nf_nat_ftp nf_nat_amanda nf_nat nf_flow_table 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 nf_conntrack_amanda nf_conntrack mt7615e mt7615_common mt76_connac_lib mt76 mac80211 ipt_REJECT ftdi_sio ebtable_nat ebtable_filter ebtable_broute cypress_m8 cp210x ch341 cfg80211 cdc_ncm cdc_ether belkin_sa ark3116 xt_time xt_tcpudp xt_tcpmss xt_statistic xt_recent xt_policy xt_multiport xt_mark xt_mac xt_limit xt_length xt_hl xt_hashlimit xt_esp xt_ecn xt_dscp xt_coova xt_comment xt_TCPMSS xt_NFLOG xt_LOG xt_HL xt_DSCP
Apr 27 05:53:41 RUTM51 kernel: [ 6785.125211]  xt_CLASSIFY xfrm_interface wireguard usbserial usbnet ts_kmp ts_fsm ts_bm tla202X slhc sch_cake rfcomm nft_reject_ipv6 nft_reject_ipv4 nft_reject_inet nft_reject nft_quota nft_objref nft_numgen nft_log nft_limit nft_hash nft_fwd_netdev nft_dup_netdev nft_counter nfnetlink_log nf_tables nf_reject_ipv4 nf_log_ipv6 nf_log_ipv4 nf_log_common nf_dup_netdev nf_defrag_ipv6 nf_defrag_ipv4 libcurve25519_generic libcrc32c libchacha20poly1305 iptable_raw iptable_mangle iptable_filter ipt_ah ipt_ECN ip6table_raw ip_tables hwmon hidp hci_uart exfat ebtables ebt_vlan ebt_stp ebt_redirect ebt_pkttype ebt_mark_m ebt_mark ebt_limit ebt_among ebt_802_3 compat cls_flower ch343 cdc_wdm cdc_acm btusb btrtl btintel bnep bluetooth asn1_decoder pulse_counter tlt_fsb 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 tlt_gpio xt_set ip_set_list_set ip_set_hash_netportnet ip_set_hash_netport
Apr 27 05:53:41 RUTM51 kernel: [ 6785.213233]  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 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 crypto_hw_eip93 des_generic libdes cmac usb_storage spi_gpio spi_bitbang gpio_74x164 xhci_plat_hcd xhci_pci xhci_mtk xhci_hcd sd_mod scsi_mod tpm_tis_i2c gpio_button_hotplug ext4 mbcache jbd2 tpm_tis_core mii crc32c_generic
Apr 27 05:53:41 RUTM51 kernel: [ 6785.379219] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.10.234 #0
Apr 27 05:53:42 RUTM51 kernel: [ 6785.385520] Stack : 807f6c68 ffffffff 80910000 8008584c 80910000 807f7bfc 00000000 00000000
Apr 27 05:53:42 RUTM51 kernel: [ 6785.393886]         8140ddac 80a70000 8143cbd0 8089ee47 807c41b8 00000001 8140dd50 106da634
Apr 27 05:53:42 RUTM51 kernel: [ 6785.402231]         00000000 00000000 807c41b8 8140dbf0 ffffefff 8090896c 00000000 00000000
Apr 27 05:53:42 RUTM51 kernel: [ 6785.410581]         00000000 00000151 00000000 0005c953 00000000 80910000 00000000 807c0000
Apr 27 05:53:42 RUTM51 kernel: [ 6785.418931]         00000009 000020d0 00000122 ffffffff 00000018 8041489c 00000004 80a70004
Apr 27 05:53:42 RUTM51 kernel: [ 6785.427292]         ...
Apr 27 05:53:42 RUTM51 kernel: [ 6785.429742] Call Trace:
Apr 27 05:53:42 RUTM51 kernel: [ 6785.432203] [<80008108>] show_stack+0x30/0x100
Apr 27 05:53:42 RUTM51 kernel: [ 6785.436639] [<803927d4>] dump_stack+0xa4/0xe0
Apr 27 05:53:42 RUTM51 kernel: [ 6785.440998] [<800304cc>] __warn+0xb0/0xd8
Apr 27 05:53:42 RUTM51 kernel: [ 6785.444996] [<80030580>] warn_slowpath_fmt+0x8c/0xac
Apr 27 05:53:42 RUTM51 kernel: [ 6785.449960] [<80587d80>] dev_watchdog+0x280/0x288
Apr 27 05:53:42 RUTM51 kernel: [ 6785.454655] [<800a38d8>] call_timer_fn.isra.30+0x20/0x90
Apr 27 05:53:42 RUTM51 kernel: [ 6785.459946] [<800a42a8>] run_timer_softirq+0x22c/0x4d8
Apr 27 05:53:42 RUTM51 kernel: [ 6785.465069] [<8070c58c>] __do_softirq+0x16c/0x334
Apr 27 05:53:42 RUTM51 kernel: [ 6785.469760] [<800351a0>] irq_exit+0xc4/0xec
Apr 27 05:53:42 RUTM51 kernel: [ 6785.473935] [<803acf9c>] plat_irq_dispatch+0x64/0x104
Apr 27 05:53:42 RUTM51 kernel: [ 6785.478969] [<80003548>] except_vec_vi_end+0xb8/0xc4
Apr 27 05:53:42 RUTM51 kernel: [ 6785.483924] [<804d4fd0>] cpuidle_enter_state_coupled+0x3b0/0x500
Apr 27 05:53:42 RUTM51 kernel: [ 6785.489909] [<804d27f0>] cpuidle_enter+0x54/0xac
Apr 27 05:53:42 RUTM51 kernel: [ 6785.494520] [<80060860>] do_idle+0x268/0x2d8
Apr 27 05:53:42 RUTM51 kernel: [ 6785.498774] [<80060b40>] cpu_startup_entry+0x24/0x34
Apr 27 05:53:42 RUTM51 kernel: [ 6785.503717] [<80004f34>] mips_cpuidle_wait_enter+0x24/0x50
Apr 27 05:53:42 RUTM51 kernel: [ 6785.509179]
Apr 27 05:53:42 RUTM51 kernel: [ 6785.511040] ---[ end trace 781a48e83551f2f1 ]---
Apr 27 05:54:25 RUTM51 network: IPv4 connectivity started to fail
Apr 27 05:54:29 RUTM51 kernel: [ 6832.704892] usb 2-1: USB disconnect, device number 2
Apr 27 05:54:29 RUTM51 kernel: [ 6832.710109] cdc_ncm 2-1:1.0 usb0: unregister 'cdc_ncm' usb-1e1c0000.xhci-1, CDC NCM
Apr 27 05:54:29 RUTM51 netifd: Network device 'usb0' link is down
Apr 27 05:54:29 RUTM51 netifd: Interface 'mob1s1a1_4' has link connectivity loss
Apr 27 05:54:29 RUTM51 netifd: Interface 'mob1s1a1_4' is now down

reconnection attempts continue until 08:15 where i have a modem reboot scheduled:

Apr 28 08:14:59 RUTM51 mobifd: [gsm.modem0] Connection establishment timer set to "3600s"
Apr 28 08:14:59 RUTM51 mobifd: [gsm.modem0] Attempting to establish connection to operator with "3600s" of timeout
Apr 28 08:14:59 RUTM51 mobifd: [gsm.modem0] Connected to operator "24007"
Apr 28 08:15:00 RUTM51 crond[10925]: USER preboot pid 18431 cmd /usr/sbin/reboot_modem.sh

it connects (ip masked to a.b.c.d):

Apr 28 08:15:58 RUTM51 mobifd: [gsm.modem0] IP address on PDP context "1": "a.b.c.d"

in addition, i see a lot of “modem failed” errors (error number 5, 11 and 19) in the log, example:

Apr 27 09:18:15 RUTM51 gsmd[4581]: [__write:1300] warning: [CMM] Write to `2-1 [2c7c:0900]` modem failed: errno 5
Apr 27 12:51:37 RUTM51 gsmd[4562]: [__write:1300] warning: [CMM] Write to `2-1 [2c7c:0900]` modem failed: errno 11
Apr 27 12:51:38 RUTM51 gsmd[4562]: [__write:1300] warning: [CMM] Write to `2-1 [2c7c:0900]` modem failed: errno 19
5

I confirm mobile network instability with the latest firmware R_00.07.14.
Rollbacked waiting for fix. In my case TBR500

Regards

6

Thanks for info!

When i try to downgrade the firmware I get the message that configuration will not be retained since i’m doing a downgrade.

I’m accessing my device remotley; so if the device is reset to factory defaults, including IP-addresses on “inside”, i’ll cut off my access.. Anoyone know if any settings are kept?

7

Someone from Teltonika can support this issue?

8

Yesterday i implemented autoreboot of modem when connection drops and i can’t ping google dns. This is todays events…
this situation is totally useless.


Apr 29 05:30:00 RUTM51 ping_reboot.sh: Restarting modem after 2 unsuccessful tries
Apr 29 05:40:01 RUTM51 ping_reboot.sh: Restarting modem after 2 unsuccessful tries
Apr 29 09:20:00 RUTM51 ping_reboot.sh: Restarting modem after 2 unsuccessful tries
Apr 29 09:45:00 RUTM51 ping_reboot.sh: Restarting modem after 2 unsuccessful tries
Apr 29 12:25:00 RUTM51 ping_reboot.sh: Restarting modem after 2 unsuccessful tries
Apr 29 12:35:00 RUTM51 ping_reboot.sh: Restarting modem after 2 unsuccessful tries
Apr 29 13:00:01 RUTM51 ping_reboot.sh: Restarting modem after 2 unsuccessful tries
Apr 29 16:55:01 RUTM51 ping_reboot.sh: Restarting modem after 2 unsuccessful tries
Apr 29 17:05:01 RUTM51 ping_reboot.sh: Restarting modem after 2 unsuccessful tries
Apr 29 17:15:01 RUTM51 ping_reboot.sh: Restarting modem after 2 unsuccessful tries
Apr 29 17:25:00 RUTM51 ping_reboot.sh: Restarting modem after 2 unsuccessful tries
9

And it continues.
Anyone from teltonika available to give some kind of time plan for a new firmware?

Apr 29 21:10:01 RUTM51 ping_reboot.sh: Restarting modem after 2 unsuccessful tries
Apr 30 02:55:01 RUTM51 ping_reboot.sh: Restarting modem after 2 unsuccessful tries
Apr 30 05:10:00 RUTM51 ping_reboot.sh: Restarting modem after 2 unsuccessful tries
Apr 30 05:20:00 RUTM51 ping_reboot.sh: Restarting modem after 2 unsuccessful tries
11

Hello @fenrus,

Apologies for this situation. Our R&D team is already aware of this issue and is actively investigating and testing it, as it seems to be specifically reproducible on RUTM51 devices. At this stage, it’s difficult to provide an exact timeline for the next firmware release, as the issue may be related to the Quectel modem itself, and the R&D team is working closely with them to isolate and resolve it.

In the meantime, could you please submit the support request form sent to the email address you used for your forum registration? This will allow us to provide you with a temporary fix (when there’ll be one) and ensure you receive direct updates as soon as we have further information available from our R&D team.

We appreciate your patience and cooperation on this.

Best regards,

1 Like
12

Same problem also on TRB500. Just to know :slight_smile:

Regards
Gianluca

13

Thanks Martynas,
I saw the email and have submitted the form with reference to 13486 (this thread)

While we are waiting for the R&D team and vendor, is it a good idea to downgrade to an earlier firmware can that possibly reduce the issues we are having?

14

Regarding your question, downgrading to an earlier firmware version would reset the device to default settings and erase all current configurations. If you’re managing the unit remotely, this would result in a loss of connection, so it’s important to consider whether this outcome is acceptable in your situation.

Additionally, it’s worth noting that a similar issue was reported in an earlier firmware version here: RUTM51 modem disconnects several times a day, so downgrading most likely won’t resolve it. For now, I’d recommend holding off on that step. As soon as we have a temporary fix or recommendation from our R&D team, I’ll reach out to you directly via email.

Thank you again for your patience and cooperation, we’ll stay in touch with any updates.

Best regards,

1 Like
15

Hello @gianluca,

Could you please create a separate thread on the forum, as your case might be different and unrelated to this one?

Kind regards,