After modem reset is USB connections not re-added

Thu Jul 21 10:46:46 UTC 2022

Hey
I have a Habaneroevaluation board connected toa Quectell RMU500 modem evaluationboard
Modem manager version = 1.14.12 according to mmcli -V
My feeds is according togit blame feeds.conf.default
9028d2d13bc (Aleksander Morgado 2021-09-17 14:58:52 +0200 1) src-git packages https
://<http://gitlab.com/miwire-rr/miwire-openwrt-packages-upstream.git^4d9fc7452c584739ed0b7ac4069863986a2e6293>
268557228ad (Aleksander Morgado 2020-02-12 17:37:29 +0100 2) src-git luci https
://<http://gitlab.com/miwire-rr/miwire-openwrt-luci-upstream.git^299f48b101bf7f7e6859e77c748b19b32e54bddc>33732f4a9c1 (Jo-Philipp Wich2020-02-27 22:34:09 +0100 3) src-git routing
<https://git.openwrt.org/feed/routing.git^efa6e5445adda9c6545f551808829ec927cbade8>33732f4a9c1 (Jo-Philipp Wich2020-02-27 22:34:09 +0100 4) src-git telephony
<https://git.openwrt.org/feed/telephony.git^6f95d6ab3f359ee2ce81c20522700937424d1591>

openWrt version is
OpenWrt 19.07.2, r10947-65030d81f3After power on is sysfspathOK and I can access modem via mmcli.
I reset modem by use the command mmcli -m <sysfspath>--reset
According to logread -e hotplugis USB connections removed which is OK.
I expect the USB connections to be re-established after a while.
But nothing is re-established according to the following commands:
1.logread -e hotplug
2.dmesg | grep -i usb
3.ls -l /dev
4.ls -l <sysfspath
As I read the log ModemManagerremove the USB connection at reset but do not add USB connections again
Is ModemManager responsible for re-establish USB connection ?
Do anyone have a method to trig re-establish of USB connection ?
If Habaneroevaluation board is power up WITHOUT connection to Quectell RMU500 modem evaluationboard there is of cause no USB connections.
But I expect the connection to pop up at plug in the USB cable which connect the two boards. But the situation is exactly the same as after reset of modem.
Who is responsible forcontinuously try to establish USB connection in case the connections are down. ?

The following log is from logread -e hotplug
16:57:59 kernel: [ 15.290512] Modules linked in: i2c_gpio_custom(+) i2c_gpio i2c_algo_bit nf_log_ipv6 nf_log_common ip6table_mangle ip6table_filter ip6_tables ip6t_REJECT x_tables nf_reject_ipv6 vfat fat nls_utf8 nls_iso8859_1 nls_cp437 sdhci_msm mmc_block usb_storage sdhci_pltfm sdhci mmc_core leds_gpio xhci_plat_hcd xhci_pci xhci_hcd dwc3 dwc3_of_simple ohci_pci ohci_platform ohci_hcd sd_mod scsi_mod gpio_button_hotplug ext4 mbcache jbd2 mii crc32c_generic
16:57:59 ModemManager: hotplug: already waiting for modem at sysfs path /sys/devices/platform/soc/8af8800.usb3/8a00000.dwc3/<http://xhci-hcd.0.auto/usb1/1-1>
16:57:59 ModemManager: hotplug: add serial interface ttyUSB3: event processed
16:57:59 ModemManager: hotplug: event reported: action=add, name=ttyUSB3, subsystem=tty
16:57:59 ModemManager: hotplug: already waiting for modem at sysfs path /sys/devices/platform/soc/8af8800.usb3/8a00000.dwc3/<http://xhci-hcd.0.auto/usb1/1-1>
16:58:03 ModemManager: hotplug: error: modem not detected at sysfs path
16:58:03 ModemManager: hotplug: add network interface br-lan: event processed
16:58:03 ModemManager: hotplug: event reported: action=add, name=br-lan, subsystem=net
16:58:03 ModemManager: hotplug: error: parent device sysfspath not found
16:58:03 ModemManager: hotplug: remove network interface wlan1: event processed
16:58:03 ModemManager: hotplug: event reported: action=remove, name=wlan1, subsystem=net
16:58:03 ModemManager: hotplug: remove network interface wlan0: event processed
16:58:03 ModemManager: hotplug: event reported: action=remove, name=wlan0, subsystem=net
16:58:04 ModemManager: hotplug: checking if ModemManager is available...
16:58:04 ModemManager: hotplug: cached event found: action=add, name=ttyMSM1, subsystem=tty, sysfspath=/sys/devices/platform/soc/<http://78b0000.serial/tty/ttyMSM1>
16:58:04 ModemManager: hotplug: event reported: action=add, name=ttyMSM1, subsystem=tty
16:58:04 ModemManager: hotplug: error: parent device sysfspath not found
16:58:04 ModemManager: hotplug: cached event found: action=add, name=console, subsystem=tty, sysfspath=/sys/devices/virtual/tty/console
16:58:04 ModemManager: hotplug: event reported: action=add, name=console, subsystem=tty
16:58:04 ModemManager: hotplug: error: parent device sysfspath not found
16:58:04 ModemManager: hotplug: add network interface wlan0: event processed
16:58:04 ModemManager: hotplug: event reported: action=add, name=wlan0, subsystem=net
16:58:04 ModemManager: hotplug: cached event found: action=add, name=ttyS0, subsystem=tty, sysfspath=/sys/devices/platform/serial8250/tty/ttyS0
16:58:04 ModemManager: hotplug: event reported: action=add, name=ttyS0, subsystem=tty
16:58:04 ModemManager: hotplug: error: parent device sysfspath not found
16:58:04 ModemManager: hotplug: error: parent device sysfspath not found
16:58:04 ModemManager: hotplug: cached event found: action=add, name=ttyMSM0, subsystem=tty, sysfspath=/sys/devices/platform/soc/<http://78af000.serial/tty/ttyMSM0>
16:58:04 ModemManager: hotplug: event reported: action=add, name=ttyMSM0, subsystem=tty
16:58:04 ModemManager: hotplug: error: parent device sysfspath not found
16:58:04 ModemManager: hotplug: cached event found: action=add, name=ttyS1, subsystem=tty, sysfspath=/sys/devices/platform/serial8250/tty/ttyS1
16:58:04 ModemManager: hotplug: event reported: action=add, name=ttyS1, subsystem=tty
16:58:05 ModemManager: hotplug: error: parent device sysfspath not found
16:58:05 ModemManager: hotplug: cached event found: action=add, name=wwan0, subsystem=net, sysfspath=/sys/devices/platform/soc/8af8800.usb3/8a00000.dwc3/<http://xhci-hcd.0.auto/usb1/1-1/1-1:1.4/net/wwan0>
16:58:05 ModemManager: hotplug: event reported: action=add, name=wwan0, subsystem=net
16:58:05 ModemManager: hotplug: interface 'wan' is set to configure device '/sys/devices/platform/soc/8af8800.usb3/8a00000.dwc3/<http://xhci-hcd.0.auto/usb1/1-1>'
16:58:05 ModemManager: hotplug: now waiting for modem at sysfs path /sys/devices/platform/soc/8af8800.usb3/8a00000.dwc3/<http://xhci-hcd.0.auto/usb1/1-1>
16:58:05 ModemManager: hotplug: cached event found: action=add, name=cdc-wdm0, subsystem=usbmisc, sysfspath=/sys/devices/platform/soc/8af8800.usb3/8a00000.dwc3/<http://xhci-hcd.0.auto/usb1/1-1/1-1:1.4/net/wwan0>
16:58:05 ModemManager: hotplug: event reported: action=add, name=cdc-wdm0, subsystem=usbmisc
16:58:05 ModemManager: hotplug: error: modem not detected at sysfs path
16:58:05 ModemManager: hotplug: already waiting for modem at sysfs path /sys/devices/platform/soc/8af8800.usb3/8a00000.dwc3/<http://xhci-hcd.0.auto/usb1/1-1>
16:58:05 ModemManager: hotplug: cached event found: action=add, name=ttyUSB0, subsystem=tty, sysfspath=/sys/devices/platform/soc/8af8800.usb3/8a00000.dwc3/<http://xhci-hcd.0.auto/usb1/1-1/1-1:1.0/ttyUSB0/tty/ttyUSB0>
16:58:05 ModemManager: hotplug: event reported: action=add, name=ttyUSB0, subsystem=tty
16:58:05 ModemManager: hotplug: already waiting for modem at sysfs path /sys/devices/platform/soc/8af8800.usb3/8a00000.dwc3/<http://xhci-hcd.0.auto/usb1/1-1>
16:58:05 ModemManager: hotplug: add network interface wlan1: event processed
16:58:05 ModemManager: hotplug: event reported: action=add, name=wlan1, subsystem=net
16:58:05 ModemManager: hotplug: cached event found: action=add, name=ttyUSB1, subsystem=tty, sysfspath=/sys/devices/platform/soc/8af8800.usb3/8a00000.dwc3/<http://xhci-hcd.0.auto/usb1/1-1/1-1:1.1/ttyUSB1/tty/ttyUSB1>
16:58:05 ModemManager: hotplug: event reported: action=add, name=ttyUSB1, subsystem=tty
16:58:05 ModemManager: hotplug: error: parent device sysfspath not found
16:58:05 ModemManager: hotplug: already waiting for modem at sysfs path /sys/devices/platform/soc/8af8800.usb3/8a00000.dwc3/<http://xhci-hcd.0.auto/usb1/1-1>
16:58:05 ModemManager: hotplug: cached event found: action=add, name=ttyUSB2, subsystem=tty, sysfspath=/sys/devices/platform/soc/8af8800.usb3/8a00000.dwc3/<http://xhci-hcd.0.auto/usb1/1-1/1-1:1.2/ttyUSB2/tty/ttyUSB2>
16:58:06 ModemManager: hotplug: event reported: action=add, name=ttyUSB2, subsystem=tty
16:58:06 ModemManager: hotplug: already waiting for modem at sysfs path /sys/devices/platform/soc/8af8800.usb3/8a00000.dwc3/<http://xhci-hcd.0.auto/usb1/1-1>
16:58:06 ModemManager: hotplug: cached event found: action=add, name=ttyUSB3, subsystem=tty, sysfspath=/sys/devices/platform/soc/8af8800.usb3/8a00000.dwc3/<http://xhci-hcd.0.auto/usb1/1-1/1-1:1.3/ttyUSB3/tty/ttyUSB3>
16:58:06 ModemManager: hotplug: event reported: action=add, name=ttyUSB3, subsystem=tty
16:58:06 ModemManager: hotplug: already waiting for modem at sysfs path /sys/devices/platform/soc/8af8800.usb3/8a00000.dwc3/<http://xhci-hcd.0.auto/usb1/1-1>
16:58:06 ModemManager: hotplug: cached event found: action=add, name=br-lan, subsystem=net, sysfspath=/sys/devices/virtual/net/br-lan
16:58:06 ModemManager: hotplug: event reported: action=add, name=br-lan, subsystem=net
16:58:06 ModemManager: hotplug: error: parent device sysfspath not found
16:58:06 ModemManager: hotplug: cached event found: action=add, name=wlan0, subsystem=net, sysfspath=/sys/devices/platform/soc/<http://a000000.wifi/net/wlan0>
16:58:06 ModemManager: hotplug: event reported: action=add, name=wlan0, subsystem=net
16:58:06 ModemManager: hotplug: error: parent device sysfspath not found
16:58:06 ModemManager: hotplug: cached event found: action=add, name=wlan1, subsystem=net, sysfspath=/sys/devices/platform/soc/<http://a800000.wifi/net/wlan1>
16:58:06 ModemManager: hotplug: event reported: action=add, name=wlan1, subsystem=net
16:58:06 ModemManager: hotplug: error: parent device sysfspath not found
16:58:08 ModemManager: hotplug: error: modem not detected at sysfs path
16:58:10 ModemManager: hotplug: error: modem not detected at sysfs path
16:58:13 ModemManager: hotplug: error: modem not detected at sysfs path
16:58:15 ModemManager: hotplug: error: modem not detected at sysfs path
16:58:18 ModemManager: hotplug: error: modem not detected at sysfs path
16:58:19 ModemManager: hotplug: remove network interface wlan1: event processed
16:58:19 ModemManager: hotplug: event reported: action=remove, name=wlan1, subsystem=net
16:58:20 ModemManager: hotplug: add network interface wlan1: event processed
16:58:20 ModemManager: hotplug: event reported: action=add, name=wlan1, subsystem=net
16:58:20 ModemManager: hotplug: error: parent device sysfspath not found
16:58:20 ModemManager: hotplug: error: modem not detected at sysfs path
16:58:23 ModemManager: hotplug: modem exported successfully at /sys/devices/platform/soc/8af8800.usb3/8a00000.dwc3/<http://xhci-hcd.0.auto/usb1/1-1>
16:58:23 ModemManager: hotplug: setting interface 'wan' as available
16:58:25 ModemManager: hotplug: modem exported successfully at /sys/devices/platform/soc/8af8800.usb3/8a00000.dwc3/<http://xhci-hcd.0.auto/usb1/1-1>
16:58:25 ModemManager: hotplug: setting interface 'wan' as available
16:58:27 ModemManager: hotplug: remove network interface wlan0: event processed
16:58:27 ModemManager: hotplug: event reported: action=remove, name=wlan0, subsystem=net
16:58:28 ModemManager: hotplug: add network interface wlan0: event processed
16:58:28 ModemManager: hotplug: event reported: action=add, name=wlan0, subsystem=net
16:58:28 ModemManager: hotplug: error: parent device sysfspath not found
Now modem is reset
17:02:34 ModemManager: hotplug: remove serial interface ttyUSB0: event processed
17:02:34 ModemManager: hotplug: event reported: action=remove, name=ttyUSB0, subsystem=tty
17:02:35 ModemManager: hotplug: remove serial interface ttyUSB1: event processed
17:02:35 ModemManager: hotplug: event reported: action=remove, name=ttyUSB1, subsystem=tty
17:02:35 ModemManager: hotplug: remove serial interface ttyUSB2: event processed
17:02:35 ModemManager: hotplug: event reported: action=remove, name=ttyUSB2, subsystem=tty
17:02:35 ModemManager: hotplug: remove serial interface ttyUSB3: event processed
17:02:35 ModemManager: hotplug: event reported: action=remove, name=ttyUSB3, subsystem=tty
17:02:39 ModemManager: hotplug: remove network interface wwan0: event processed
17:02:39 ModemManager: hotplug: event reported: action=remove, name=wwan0, subsystem=net
17:02:40 ModemManager: hotplug: remove cdc interface cdc-wdm0: custom event processed
17:02:40 ModemManager: hotplug: event reported: action=remove, name=cdc-wdm0, subsystem=usbmisc
17:02:40 ModemManager: hotplug: setting interface 'wan' as unavailable

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/modemmanager-devel/attachments/20220721/12cccbe9/attachment-0001.htm>