Carbon X1 gen5: GSM modem keeps appearing, then disappearing at regular intervals

[rootkovska]

Qubes 4.0, latest kernel in sys-usb.

[  552.461099] usb 1-6: new high-speed USB device number 18 using xhci_hcd
[  552.629584] usb 1-6: config 1 has an invalid interface number: 12 but max is 1
[  552.629601] usb 1-6: config 1 has an invalid interface number: 13 but max is 1
[  552.629613] usb 1-6: config 1 has an invalid interface number: 13 but max is 1
[  552.629626] usb 1-6: config 1 has no interface number 0
[  552.629634] usb 1-6: config 1 has no interface number 1
[  552.630189] usb 1-6: New USB device found, idVendor=1199, idProduct=9079
[  552.630205] usb 1-6: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[  552.630221] usb 1-6: Product: Sierra Wireless EM7455 Qualcomm Snapdragon X7 LTE-A
[  552.630258] usb 1-6: Manufacturer: Sierra Wireless, Incorporated
[  552.630273] usb 1-6: SerialNumber: REDACTED
[  552.652627] cdc_mbim 1-6:1.12: cdc-wdm0: USB WDM device
[  552.653211] cdc_mbim 1-6:1.12 wwan0: register 'cdc_mbim' at usb-0000:00:05.0-6, CDC MBIM, ee:REDACTED
[  552.689230] cdc_mbim 1-6:1.12 wws5f0u6i12: renamed from wwan0
[  610.401950] usb 1-6: USB disconnect, device number 18
[  610.402279] cdc_mbim 1-6:1.12 wws5f0u6i12: unregister 'cdc_mbim' usb-0000:00:05.0-6, CDC MBIM
[  611.151091] usb 1-6: new high-speed USB device number 19 using xhci_hcd
[  611.320720] usb 1-6: config 1 interface 0 altsetting 0 bulk endpoint 0x1 has invalid maxpacket 64
[  611.320802] usb 1-6: config 1 interface 0 altsetting 0 bulk endpoint 0x81 has invalid maxpacket 64
[  611.322142] usb 1-6: New USB device found, idVendor=1199, idProduct=9078
[  611.322215] usb 1-6: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[  611.322290] usb 1-6: Product: Sierra Wireless EM7455 Qualcomm
[  611.322383] usb 1-6: Manufacturer: Sierra Wireless, Incorporated
[  611.322451] usb 1-6: SerialNumber: REDACTED
[  611.323670] usb 1-6: USB disconnect, device number 19

[marmarek]

Any specific circumstances? What kernel version? It have never happened to me (4.14.18 kernel)...

[rootkovska]

4.9.56-21 (but experience the same on the previous one also).

[marmarek]

4.4.18 is newer than 4.9.56, so you might want to switch.

[rootkovska]

The same happens on 4.14.18-1.

[MatthiasLohr]

Same here with 4.15.0... any ideas yet?

[MatthiasLohr]

Also still there with 4.19.0-041900rc6-generic... Nothing new here?

[github-actions[bot]]

This issue is being closed because:

• This issue is on the "Release 4.0 updates" milestone.
• Qubes OS 4.0 reached EOL (end-of-life) over one year ago.
• There has not been any activity on this issue in over one year.

If anyone believes that this issue should be reopened and reassigned to an active milestone, please leave a brief comment. (For example, if a bug still affects Qubes OS 4.1, then the comment "Affects 4.1" will suffice.)