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by
Hi! New RUTX14 has hard time keeping the LTE/4G connection stable and the modem connection is droppped usually after few minutes (usually <10 mins, sometimes connection stays for couple of hours). This happens in multiple locations and both with the supplied 4G antennas as well as with PR1KCL28 antenna. After the connection drops, it does not seem to get back up again. This makes the device unreliable/ususable.

When the modem/lte/4g goes down, the web UI also often gets slow/unreliable and generation of troubleshoot .tar.gz takes long and the web page timeouts. Fortunately SSH works normally I was able to create the troubleshoot file with the troubleshoot.sh script. When running the troubleshoot.sh from SSH I get following messages:

# troubleshoot.sh
GSMCTL error: reading message
Command failed: Request timed out
Command failed: Method not found
Another app is currently holding the xtables lock. Perhaps you want to use the -w option?

From dmesg I see

[ 1633.551526] usb 1-1: USB disconnect, device number 3
[ 1633.552421] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0
[ 1633.556408] option 1-1:1.0: device disconnected
[ 1633.564624] option1 ttyUSB1: GSM modem (1-port) converter now disconnected from ttyUSB1
[ 1633.568371] option 1-1:1.1: device disconnected
[ 1633.577550] option1 ttyUSB2: GSM modem (1-port) converter now disconnected from ttyUSB2
[ 1633.580456] option 1-1:1.2: device disconnected
[ 1633.588980] option1 ttyUSB3: GSM modem (1-port) converter now disconnected from ttyUSB3
[ 1633.593126] option 1-1:1.3: device disconnected
[ 1633.601235] qmi_wwan 1-1:1.4 wwan0: unregister 'qmi_wwan' usb-xhci-hcd.0.auto-1, WWAN/QMI device
[ 1633.818286] qmi_wwan 1-1:1.4: Error submitting int urb - -19
[ 1633.824894] qmi_wwan 1-1:1.4: Error submitting int urb - -19

repeated over and over. In one case there was also trace:

[ 1987.990696] ------------[ cut here ]------------
[ 1987.990764] WARNING: CPU: 1 PID: 0 at net/sched/sch_generic.c:473 dev_watchdog+0x26c/0x270
[ 1987.994401] NETDEV WATCHDOG: wwan0 (qmi_wwan): transmit queue 0 timed out
[ 1988.002470] Modules linked in: xt_connlimit pppoe ppp_async option nf_conncount l2tp_ppp iptable_nat ath10k_pci ath10k_core ath xt_state xt_nat xt_helper xt_conntrack xt_connmark xt_connbytes xt_REDIRECT xt_NETMAP xt_MASQUERADE xt_FLOWOFFLOAD xt_CT wireguard usb_wwan qmi_wwan pptp pppox ppp_mppe ppp_generic pl2303 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_hw nf_flow_table nf_conntrack_tftp nf_conntrack_snmp nf_conntrack_sip nf_conntrack_pptp nf_conntrack_irc nf_conntrack_h323 nf_conntrack_ftp nf_conntrack_broadcast nf_conntrack_amanda nf_conntrack mac80211 libchacha20poly1305 libblake2s ipt_REJECT ftdi_sio ebtable_nat ebtable_filter ebtable_broute cypress_m8 curve25519_neon cp210x ch341 cfg80211 belkin_sa ark3116 xt_time xt_tcpudp xt_tcpmss xt_statistic xt_recent xt_quota2 xt_policy xt_multiport xt_mark xt_mac xt_limit xt_length xt_hl xt_esp xt_ecn xt_dscp xt_comment xt_TCPMSS xt_NFLOG xt_LOG xt_HL xt_DSCP
[ 1988.002650]  xt_CLASSIFY usbserial usbnet usblp ts_kmp ts_fsm ts_bm slhc sch_cake rfcomm poly1305_arm nfnetlink_log nf_reject_ipv4 nf_log_ipv4 nf_defrag_ipv6 nf_defrag_ipv4 libcurve25519_generic libblake2s_generic iptable_raw iptable_mangle iptable_filter ipt_ah ipt_ECN ip_tables hidp hci_uart 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 crc_ccitt compat chacha_neon cdc_wdm cdc_acm btusb btintel bnep bluetooth asn1_decoder fuse sch_tbf sch_ingress sch_htb sch_hfsc em_u32 cls_u32 cls_tcindex cls_route cls_matchall cls_fw cls_flow cls_basic act_skbedit act_mirred act_gact hid evdev input_core 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
[ 1988.074268]  ip_set_bitmap_ip ip_set nfnetlink nf_log_ipv6 nf_log_common 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 udp_tunnel ip6_udp_tunnel ipcomp6 xfrm6_tunnel esp6 ah6 xfrm4_tunnel ipcomp esp4 ah4 ip6_tunnel tunnel6 tunnel4 ip_tunnel tun xfrm_user xfrm_ipcomp af_key xfrm_algo vfat fat autofs4 nls_utf8 nls_iso8859_1 nls_cp437 ecdh_generic ecc sha512_generic kpp ghash_generic ghash_arm_ce gf128mul gcm echainiv cmac arc4 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
[ 1988.221561] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.4.147 #0
[ 1988.243781] Hardware name: Generic DT based system
[ 1988.250051] [<c030e524>] (unwind_backtrace) from [<c030afa8>] (show_stack+0x10/0x14)
[ 1988.254643] [<c030afa8>] (show_stack) from [<c0889fc4>] (dump_stack+0x94/0xa8)
[ 1988.262539] [<c0889fc4>] (dump_stack) from [<c0325390>] (__warn+0xbc/0xd8)
[ 1988.269569] [<c0325390>] (__warn) from [<c0325430>] (warn_slowpath_fmt+0x84/0x94)
[ 1988.276431] [<c0325430>] (warn_slowpath_fmt) from [<c0778c54>] (dev_watchdog+0x26c/0x270)
[ 1988.283985] [<c0778c54>] (dev_watchdog) from [<c0383d20>] (call_timer_fn.constprop.8+0x24/0x98)
[ 1988.292143] [<c0383d20>] (call_timer_fn.constprop.8) from [<c03843d0>] (run_timer_softirq+0x3fc/0x428)
[ 1988.300651] [<c03843d0>] (run_timer_softirq) from [<c0302288>] (__do_softirq+0x120/0x2b0)
[ 1988.310028] [<c0302288>] (__do_softirq) from [<c0329330>] (irq_exit+0xb0/0xd4)
[ 1988.318271] [<c0329330>] (irq_exit) from [<c036f350>] (__handle_domain_irq+0x60/0xb4)
[ 1988.325391] [<c036f350>] (__handle_domain_irq) from [<c05bf39c>] (gic_handle_irq+0x4c/0x90)
[ 1988.333289] [<c05bf39c>] (gic_handle_irq) from [<c0301a8c>] (__irq_svc+0x6c/0x90)
[ 1988.341441] Exception stack(0xcf861f60 to 0xcf861fa8)
[ 1988.349081] 1f60: 00000000 008af250 cfd84274 c0313c40 ffffe000 c0c04e68 c0c04ea8 00000002
[ 1988.354120] 1f80: 00000000 c0b3fde8 c0c0ebc0 00000000 c0c04e78 cf861fb0 c03083c0 c03083c4
[ 1988.362274] 1fa0: 60000013 ffffffff
[ 1988.370437] [<c0301a8c>] (__irq_svc) from [<c03083c4>] (arch_cpu_idle+0x38/0x3c)
[ 1988.373740] [<c03083c4>] (arch_cpu_idle) from [<c034ddb8>] (do_idle+0x1e4/0x21c)
[ 1988.381378] [<c034ddb8>] (do_idle) from [<c034e080>] (cpu_startup_entry+0x18/0x1c)
[ 1988.388755] [<c034e080>] (cpu_startup_entry) from [<803024ac>] (0x803024ac)
[ 1988.396145] ---[ end trace 6dfafcf923ec294c ]---

From this forum I found https://community.teltonika-networks.com/29590/rutx12-mobile-modem-periodically-down-disconnected-ttyusb which sounds very similar problem.

I have updated the FW (as the problem has been ongoing, I was also able to test previous 3 fw versions), tried to use the second SIM slot, and I have restarted the RUTX14 to it's default settings and none of these have helped.

I would like to verify that this is a hardware issue and recommended action is replacing the device for a new one through the seller. Can you verify this?

Device: RUTX14
Hardware revision: 0201
Batch number: 0002
Primary Modem: EG12
Fw version: EG12EAPAR01A09M4G
System fw version: RUTX_R_00.07.02
Kernel version: 5.4.147

I have attached trobleshoot file which was generated when the modem was working and another one which was generated when modem had stopped working and the file was generated from SSH.
by

I am experiencing this exact issue and it is driving me nuts. The connection drops many times per day and only thing that helps is a full reboot, nothing else. Here's what I get in the log:


Fri Sep 16 13:31:25 2022 kern.warn kernel: [13555.029570] WARNING: CPU: 0 PID: 0 at net/sched/sch_generic.c:473 dev_watchdog+0x26c/0x270

Fri Sep 16 13:31:25 2022 kern.info kernel: [13555.033225] NETDEV WATCHDOG: wwan0 (qmi_wwan): transmit queue 0 timed out

Fri Sep 16 13:31:25 2022 kern.warn kernel: [13555.041285] Modules linked in: xt_connlimit pppoe ppp_async option nf_conncount l2tp_ppp iptable_nat ath10k_pci ath10k_core ath xt_state xt_nat xt_helper xt_conntrack xt_connmark xt_connbytes xt_REDIRECT xt_NETMAP xt_MASQUERADE xt_FLOWOFFLOAD xt_CT wireguard usb_wwan qmi_wwan pptp pppox ppp_mppe ppp_generic pl2303 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_hw nf_flow_table nf_conntrack_tftp nf_conntrack_snmp nf_conntrack_sip nf_conntrack_pptp nf_conntrack_irc nf_conntrack_h323 nf_conntrack_ftp nf_conntrack_broadcast nf_conntrack_amanda nf_conntrack mac80211 libchacha20poly1305 libblake2s ipt_REJECT ftdi_sio ebtable_nat ebtable_filter ebtable_broute cypress_m8 curve25519_neon cp210x ch341 cfg80211 belkin_sa ark3116 xt_time xt_tcpudp xt_tcpmss xt_statistic xt_recent xt_quota2 xt_policy xt_multiport xt_mark xt_mac xt_limit xt_length xt_hl xt_esp xt_ecn xt_dscp xt_comment xt_TCPMSS xt_NFLOG xt_LOG xt_HL xt_DSCP

Fri Sep 16 13:31:25 2022 kern.warn kernel: [13555.041466]  xt_CLASSIFY usbserial usbnet usblp ts_kmp ts_fsm ts_bm slhc sch_cake rfcomm poly1305_arm nfnetlink_log nf_reject_ipv4 nf_log_ipv4 nf_defrag_ipv6 nf_defrag_ipv4 libcurve25519_generic libblake2s_generic iptable_raw iptable_mangle iptable_filter ipt_ah ipt_ECN ip_tables hidp hci_uart 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 crc_ccitt compat chacha_neon cdc_wdm cdc_acm btusb btintel bnep bluetooth asn1_decoder fuse sch_tbf sch_ingress sch_htb sch_hfsc em_u32 cls_u32 cls_tcindex cls_route cls_matchall cls_fw cls_flow cls_basic act_skbedit act_mirred act_gact hid evdev input_core 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

Fri Sep 16 13:31:25 2022 kern.warn kernel: [13555.113130]  ip_set_bitmap_ip ip_set nfnetlink nf_log_ipv6 nf_log_common 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 udp_tunnel ip6_udp_tunnel ipcomp6 xfrm6_tunnel esp6 ah6 xfrm4_tunnel ipcomp esp4 ah4 ip6_tunnel tunnel6 tunnel4 ip_tunnel tun xfrm_user xfrm_ipcomp af_key xfrm_algo vfat fat autofs4 nls_utf8 nls_iso8859_1 nls_cp437 ecdh_generic ecc sha512_generic kpp ghash_generic ghash_arm_ce gf128mul gcm echainiv cmac arc4 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

Fri Sep 16 13:31:25 2022 kern.warn kernel: [13555.260365] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.4.147 #0

Fri Sep 16 13:31:25 2022 kern.warn kernel: [13555.282584] Hardware name: Generic DT based system

Fri Sep 16 13:31:25 2022 kern.warn kernel: [13555.288855] [<c030e524>] (unwind_backtrace) from [<c030afa8>] (show_stack+0x10/0x14)

Fri Sep 16 13:31:25 2022 kern.warn kernel: [13555.293447] [<c030afa8>] (show_stack) from [<c088a044>] (dump_stack+0x94/0xa8)

Fri Sep 16 13:31:25 2022 kern.warn kernel: [13555.301343] [<c088a044>] (dump_stack) from [<c0325390>] (__warn+0xbc/0xd8)

Fri Sep 16 13:31:25 2022 kern.warn kernel: [13555.308371] [<c0325390>] (__warn) from [<c0325430>] (warn_slowpath_fmt+0x84/0x94)

Fri Sep 16 13:31:25 2022 kern.warn kernel: [13555.315234] [<c0325430>] (warn_slowpath_fmt) from [<c0778ca4>] (dev_watchdog+0x26c/0x270)

Fri Sep 16 13:31:25 2022 kern.warn kernel: [13555.322788] [<c0778ca4>] (dev_watchdog) from [<c0383d20>] (call_timer_fn.constprop.8+0x24/0x98)

Fri Sep 16 13:31:25 2022 kern.warn kernel: [13555.330947] [<c0383d20>] (call_timer_fn.constprop.8) from [<c03843d0>] (run_timer_softirq+0x3fc/0x428)

Fri Sep 16 13:31:25 2022 kern.warn kernel: [13555.339454] [<c03843d0>] (run_timer_softirq) from [<c0302288>] (__do_softirq+0x120/0x2b0)

Fri Sep 16 13:31:25 2022 kern.warn kernel: [13555.348827] [<c0302288>] (__do_softirq) from [<c0329330>] (irq_exit+0xb0/0xd4)

Fri Sep 16 13:31:25 2022 kern.warn kernel: [13555.357072] [<c0329330>] (irq_exit) from [<c036f350>] (__handle_domain_irq+0x60/0xb4)

Fri Sep 16 13:31:25 2022 kern.warn kernel: [13555.364194] [<c036f350>] (__handle_domain_irq) from [<c05bf39c>] (gic_handle_irq+0x4c/0x90)

Fri Sep 16 13:31:25 2022 kern.warn kernel: [13555.372091] [<c05bf39c>] (gic_handle_irq) from [<c0301a8c>] (__irq_svc+0x6c/0x90)

Fri Sep 16 13:31:25 2022 kern.warn kernel: [13555.380243] Exception stack(0xc0c01f28 to 0xc0c01f70)

Fri Sep 16 13:31:25 2022 kern.warn kernel: [13555.387883] 1f20:                   00000000 02130150 cfd75274 c0313c40 ffffe000 c0c04e68

Fri Sep 16 13:31:25 2022 kern.warn kernel: [13555.392922] 1f40: c0c04ea8 00000001 00000000 c0b3fde8 c0c0ebc0 00000000 c0c04f10 c0c01f78

Fri Sep 16 13:31:25 2022 kern.warn kernel: [13555.401077] 1f60: c03083c0 c03083c4 60000013 ffffffff

Fri Sep 16 13:31:25 2022 kern.warn kernel: [13555.409241] [<c0301a8c>] (__irq_svc) from [<c03083c4>] (arch_cpu_idle+0x38/0x3c)

Fri Sep 16 13:31:25 2022 kern.warn kernel: [13555.414279] [<c03083c4>] (arch_cpu_idle) from [<c034ddb8>] (do_idle+0x1e4/0x21c)

Fri Sep 16 13:31:25 2022 kern.warn kernel: [13555.421742] [<c034ddb8>] (do_idle) from [<c034e080>] (cpu_startup_entry+0x18/0x1c)

Fri Sep 16 13:31:25 2022 kern.warn kernel: [13555.429124] [<c034e080>] (cpu_startup_entry) from [<c0b00df8>] (start_kernel+0x48c/0x49c)

Fri Sep 16 13:31:25 2022 kern.warn kernel: [13555.436526] ---[ end trace 8b0ee84bf0e8221d ]---

Is there any solution for this? I just can't keep working with a device which does this. For the price of it, there should not be this kind of issue.

by
I returned the rutx14 (accepted as faulty) and got a new one. I haven't had similar issue since then, but I have also moved from Switzerland to Finland and have not traveled as much. Also the SIM operator has changed. My feeling is that either the unit was really faulty and/or the issue is related to location/4G connectivity. I'll be traveling heavily during the winter and will report if I see the issue again.
by
Hi

I am also in Finland, and my router is static with large antennas. Maybe I'll try to return it too.. it just causes a lot of hassle :( not happy, not not happy.

2 Answers

0 votes
by
Hello,

I sent you the instructions on how to upgrade router modem's firmware in a personal message.

Best regards,

Žygimantas
by
I got instructions to update the router to newest version and modem fw to unpublished version. This did not help and the RUTX14 still loses modem connection in certain situations (while moving? while near country boarders? while switching between base stations?) and the RUTX14 is unable get the connection back even after long waits and solution requires RUTX14 reboot to get the connection back.

I'll going to try to return / switch the RUTX14.
by

Just after sending the comment the connection was lost again, but this time with different dmesg

[  954.950750] ------------[ cut here ]------------
[  954.950819] WARNING: CPU: 2 PID: 0 at net/sched/sch_generic.c:473 dev_watchdog+0x26c/0x270
[  954.954457] NETDEV WATCHDOG: wwan0 (qmi_wwan): transmit queue 0 timed out
[  954.962561] Modules linked in: xt_connlimit pppoe ppp_async option nf_conncount l2tp_ppp iptable_nat ath10k_pci ath10k_core ath xt_state xt_nat xt_helper xt_conntrack x                     t_connmark xt_connbytes xt_REDIRECT xt_NETMAP xt_MASQUERADE xt_FLOWOFFLOAD xt_CT wireguard usb_wwan qmi_wwan pptp pppox ppp_mppe ppp_generic pl2303 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_hw nf_flow_table nf_conntrack_tftp nf_conntrack_snmp nf_conntrack_sip nf                     _conntrack_pptp nf_conntrack_irc nf_conntrack_h323 nf_conntrack_ftp nf_conntrack_broadcast nf_conntrack_amanda nf_conntrack mac80211 libchacha20poly1305 libblake2s ipt_REJ                     ECT ftdi_sio ebtable_nat ebtable_filter ebtable_broute cypress_m8 curve25519_neon cp210x ch341 cfg80211 belkin_sa ark3116 xt_time xt_tcpudp xt_tcpmss xt_statistic xt_recen                     t xt_quota2 xt_policy xt_multiport xt_mark xt_mac xt_limit xt_length xt_hl xt_esp xt_ecn xt_dscp xt_comment xt_TCPMSS xt_NFLOG xt_LOG xt_HL xt_DSCP
[  954.962763]  xt_CLASSIFY usbserial usbnet usblp ts_kmp ts_fsm ts_bm slhc sch_cake rfcomm poly1305_arm nfnetlink_log nf_reject_ipv4 nf_log_ipv4 nf_defrag_ipv6 nf_defrag_                     ipv4 libcurve25519_generic libblake2s_generic iptable_raw iptable_mangle iptable_filter ipt_ah ipt_ECN ip_tables hidp hci_uart ebtables ebt_vlan ebt_stp ebt_snat ebt_redir                     ect 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 crc_ccitt compat chacha_neon cdc_wdm cdc_acm btusb                      btintel bnep bluetooth asn1_decoder fuse sch_tbf sch_ingress sch_htb sch_hfsc em_u32 cls_u32 cls_tcindex cls_route cls_matchall cls_fw cls_flow cls_basic act_skbedit act_                     mirred act_gact hid evdev input_core 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
[  955.034330]  ip_set_bitmap_ip ip_set nfnetlink nf_log_ipv6 nf_log_common 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 udp_tunnel ip6_udp_tunnel ipcomp6 xfrm6_tunnel esp6 ah6 xfrm4_tunnel ipcomp esp4 ah4 ip6_tunnel tunnel6 t                     unnel4 ip_tunnel tun xfrm_user xfrm_ipcomp af_key xfrm_algo vfat fat autofs4 nls_utf8 nls_iso8859_1 nls_cp437 ecdh_generic ecc sha512_generic kpp ghash_generic ghash_arm_c                     e gf128mul gcm echainiv cmac arc4 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
[  955.181687] CPU: 2 PID: 0 Comm: swapper/2 Not tainted 5.4.147 #0
[  955.203855] Hardware name: Generic DT based system
[  955.210127] [<c030e524>] (unwind_backtrace) from [<c030afa8>] (show_stack+0x10/0x14)
[  955.214706] [<c030afa8>] (show_stack) from [<c0889fc4>] (dump_stack+0x94/0xa8)
[  955.222631] [<c0889fc4>] (dump_stack) from [<c0325390>] (__warn+0xbc/0xd8)
[  955.229656] [<c0325390>] (__warn) from [<c0325430>] (warn_slowpath_fmt+0x84/0x94)
[  955.236529] [<c0325430>] (warn_slowpath_fmt) from [<c0778c54>] (dev_watchdog+0x26c/0x270)
[  955.244077] [<c0778c54>] (dev_watchdog) from [<c0383d20>] (call_timer_fn.constprop.8+0x24/0x98)
[  955.252254] [<c0383d20>] (call_timer_fn.constprop.8) from [<c03843d0>] (run_timer_softirq+0x3fc/0x428)
[  955.260754] [<c03843d0>] (run_timer_softirq) from [<c0302288>] (__do_softirq+0x120/0x2b0)
[  955.270125] [<c0302288>] (__do_softirq) from [<c0329330>] (irq_exit+0xb0/0xd4)
[  955.278383] [<c0329330>] (irq_exit) from [<c036f350>] (__handle_domain_irq+0x60/0xb4)
[  955.285477] [<c036f350>] (__handle_domain_irq) from [<c05bf39c>] (gic_handle_irq+0x4c/0x90)
[  955.293396] [<c05bf39c>] (gic_handle_irq) from [<c0301a8c>] (__irq_svc+0x6c/0x90)
[  955.301520] Exception stack(0xcf863f60 to 0xcf863fa8)
[  955.309165] 3f60: 00000000 001711d4 cfd93274 c0313c40 ffffe000 c0c04e68 c0c04ea8 00000004
[  955.314197] 3f80: 00000000 c0b3fde8 c0c0ebc0 00000000 0f252000 cf863fb0 c03083c0 c03083c4
[  955.322352] 3fa0: 60000013 ffffffff
[  955.330524] [<c0301a8c>] (__irq_svc) from [<c03083c4>] (arch_cpu_idle+0x38/0x3c)
[  955.333834] [<c03083c4>] (arch_cpu_idle) from [<c034ddb8>] (do_idle+0x1e4/0x21c)
[  955.341468] [<c034ddb8>] (do_idle) from [<c034e080>] (cpu_startup_entry+0x18/0x1c)
[  955.348841] [<c034e080>] (cpu_startup_entry) from [<803024ac>] (0x803024ac)
[  955.356294] ---[ end trace ba51bddc2bd50d2c ]---

by
We are facing same issue with our RUTX14.

Please investigate this behavior.
by
Hello,

Please attach a troubleshoot file.
Best regards,

Žygimantas
by

Hi Žygimantas, I have sent you few more troubleshoot files as private messages in addition to the ones I sent you earlier last week and to the one which was in the original message.

Br,
MattiJ

by
I also have the exact same issue. I have the latest firmware.

Best regards

Simon
by

Hello lasian,

As with the previous user, please attach the troubleshoot file.

To generate one, access router's WebUI, go to System -> Administration > Troubleshoot section and download troubleshoot file from there. 

Best regards,

Žygimantas

0 votes
by

Hi! Looks like my RUTX14 started to have the similar modem issues some days ago. It drops LTE connection to "unregistered" state and tries to switch SIMs with no success. Sometimes after ping-autoreboot it returns to life, sometimes it needs an hour. The problem happens at least twice a day. The day all this started this bugs lusted almost all day long. Before this it was working rock solid from January.

When I can manage to catch this in the web GUI it shows the LTE stats (signal straight, rsrp ets) for one second - and just after falls to "unregistered". Both SIMs are alive, are working in another modem as well.

Don't see the option to attach the troubleshoot file :(