Modemmanager stop working : error #55

erdoukki · August 15, 2021, 5:10pm

I may have some issue with ModemManager on OpenWrt 21.02-RC4.

modemmanager errors on 21.02-RC4

opened 06:33AM - 15 Aug 21 UTC

Maintainer: @nickberry17 Nicholas Smith <nicholas.smith@telcoantennas.com.au> …Environment: Model | Globalscale Marvell ESPRESSOBin Ultra Board -- | -- Architecture | ARMv8 Processor rev 4 Firmware Version | OpenWrt 21.02.0-rc4 r16256-2d5ee43dc6 / LuCI openwrt-21.02 branch git-21.188.55099-e52e1de Kernel Version | 5.4.137 I get recently issues with modemmanager... Reinstalling do not help: ``` root@ULTRA-5G:~# opkg info modemmanager Package: modemmanager Version: 1.16.2-1 Depends: libc, glib2, dbus, ppp, libmbim, libqmi Status: install user installed Architecture: aarch64_cortex-a53 Installed-Time: 1629006663 ``` service restart loop in buggy state ! Luci Network do not show device ! may be like I have an environment bug, a ps shows strange state of modemanager inti.d ! Description: ``` 9207 root 1428 S sh -c . /usr/share/ModemManager/modemmanager.common; mkdir -m 0755 -p ; mm_clean 10025 root 1428 S sh -c . /usr/share/ModemManager/modemmanager.common; mkdir -m 0755 -p ; mm_clean 10809 root 1428 S sh -c . /usr/share/ModemManager/modemmanager.common; mkdir -m 0755 -p ; mm_clean ``` sometimes it loads correctly but show strange errors in logread, which fall in timeout : ``` Sun Aug 15 08:29:19 2021 user.notice ModemManager: hotplug: error: parent device sysfspath not found Sun Aug 15 08:29:19 2021 user.notice ModemManager: hotplug: cached event found: action=add, name=mlan0, subsystem=net, sysfspath=/sys/devices/platform/soc/d0070000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/net/mlan0 Sun Aug 15 08:29:19 2021 user.notice ModemManager: hotplug: event reported: action=add, name=mlan0, subsystem=net Sun Aug 15 08:29:19 2021 user.notice ModemManager: hotplug: error: parent device sysfspath not found Sun Aug 15 08:29:19 2021 daemon.warn [15675]: <warn> [mlan0] invalid sysfs path read for net/mlan0 Sun Aug 15 08:29:19 2021 daemon.info procd: Instance modemmanager::instance1 s in a crash loop 6 crashes, 3 seconds since last crash Sun Aug 15 08:29:19 2021 user.notice ModemManager: hotplug: error: modem not detected at sysfs path Sun Aug 15 08:29:21 2021 user.notice ModemManager: hotplug: error: modem not detected at sysfs path Sun Aug 15 08:29:21 2021 user.notice ModemManager: hotplug: error: modem not detected at sysfs path Sun Aug 15 08:29:22 2021 user.notice ModemManager: hotplug: error: modem not detected at sysfs path Sun Aug 15 08:29:23 2021 user.notice ModemManager: hotplug: error: modem not detected at sysfs path Sun Aug 15 08:29:24 2021 user.notice ModemManager: hotplug: error: modem not detected at sysfs path Sun Aug 15 08:29:24 2021 user.notice ModemManager: hotplug: error: modem not detected at sysfs path Sun Aug 15 08:29:26 2021 user.notice ModemManager: hotplug: error: modem not detected at sysfs path Sun Aug 15 08:29:26 2021 user.notice ModemManager: hotplug: error: modem not detected at sysfs path Sun Aug 15 08:29:27 2021 user.notice ModemManager: hotplug: error: modem not detected at sysfs path Sun Aug 15 08:29:28 2021 user.notice ModemManager: hotplug: error: timed out waiting for the modem to get exported at /sys/devices/platform/soc/soc:internal-regs@d0000000/d005e000.usb/usb1/1-1/1-1.3 ``` I have installed watchcat, and use a script for wanmonitor. This issue appear recently... I have issue for detecting the modem (LUCI error) and have add it in UCI/shell with `mmcli -L` and `mmcli -m 0` ``` config interface 'wwan' option lowpower '1' option proto 'modemmanager' option device '/sys/devices/platform/soc/soc:internal-regs@d0000000/d005e000.usb/usb1/1-1/1-1.3' option apn 'free' option auth 'none' option pdptype 'ipv4' ``` ``` root@ULTRA-5G:~# ls /var/run/modemmanager/ -hal drwxr-xr-x 2 root root 120 Aug 15 08:29 . drwxr-xr-x 8 root root 380 Aug 15 08:22 .. -rw-r--r-- 1 root root 15 Aug 15 08:21 cdcwdm.cache -rw-r--r-- 1 root root 2.0K Aug 15 08:21 events.cache -rw-r--r-- 1 root root 6 Aug 15 08:29 modemmanager.pid -rw-r--r-- 1 root root 91 Aug 15 08:29 sysfs.cache ``` ``` root@ULTRA-5G:~# lsusb Bus 002 Device 001: ID 1d6b:0002 Linux 5.4.137 xhci-hcd xHCI Host Controller Bus 001 Device 003: ID 2c7c:0306 Quectel EP06-E Bus 001 Device 002: ID 1a40:0101 USB 2.0 Hub Bus 001 Device 001: ID 1d6b:0002 Linux 5.4.137 ehci_hcd EHCI Host Controller Bus 003 Device 001: ID 1d6b:0003 Linux 5.4.137 xhci-hcd xHCI Host Controller ``` ``` root@ULTRA-5G:~# dmesg | grep modem [ 8.732210] cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters [ 8.989764] usbserial: USB Serial support registered for GSM modem (1-port) [ 8.997431] option 1-1.3:1.0: GSM modem (1-port) converter detected [ 9.004257] usb 1-1.3: GSM modem (1-port) converter now attached to ttyUSB0 [ 9.011781] option 1-1.3:1.1: GSM modem (1-port) converter detected [ 9.018618] usb 1-1.3: GSM modem (1-port) converter now attached to ttyUSB1 [ 9.026140] option 1-1.3:1.2: GSM modem (1-port) converter detected [ 9.033009] usb 1-1.3: GSM modem (1-port) converter now attached to ttyUSB2 [ 9.040501] option 1-1.3:1.3: GSM modem (1-port) converter detected [ 9.047354] usb 1-1.3: GSM modem (1-port) converter now attached to ttyUSB3 ```

I also open a support request at Quectel:
https://forums.quectel.com/t/55-error-in-qmi-and-mbmi-with-quectel-ep06-e/10497/2