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Kleiner Hinweis zu WWAN: Sierra Wireless EM7305 (Lifebook)

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tomsiduction:
Hallo

Ich habe folgende Erfahrung gemacht (Laptop System: FUJITSU product: LIFEBOOK E756):

Mit dem aktuellen Kernel 5.9.9 towo.1-siduction-amd64 funktioniert das modem nicht und es kommt zu Anomalien (bis zur Kernel-Panic) .

Mit dem 5.6.16-towo.1-siduction-amd64 klappt es fehlerfrei.


Model: "Sierra Wireless EM7305"
  Hotplug: USB
  Vendor: usb 0x1199 "Sierra Wireless, Inc."

Hello

I have made the following experience (Laptop System: FUJITSU product: LIFEBOOK E756):

With the current kernel 5.9.9 towo.1-siduction-amd64 the modem does not work and there are anomalies (up to kernel panic) .

With the 5.6.16-towo.1-siduction-amd64 it works fine.



Regards


towo:
Try the new kernel.

tomsiduction:
Hello

I tried:

linux-image-5.9.9-towo.1-siduction-amd64

The problem still exists.

Is there a newer kernel ?

Regards

towo:

--- Code: ---The following NEW packages will be installed:
  linux-headers-5.9.9-towo.2-siduction-amd64 linux-image-5.9.9-towo.2-siduction-amd64
--- End code ---

tomsiduction:
Hello

Thank you very much

So I did install the latest kernel.
No more kernel-panic in rescue-mode.
But unfortunately:

In rescue mode it ends up in a loop of registering and disconnecting the
Qualcom USB modem converter


--- Code: ---Nov 20 17:19:58 siduction systemd[1]: usb_modeswitch@1-6.service: Failed with result 'signal'.
Nov 20 17:19:58 siduction systemd[1]: Failed to start USB_ModeSwitch_1-6.
Nov 20 17:19:58 siduction systemd-udevd[425]: wwan0: Failed to get link config: No such device
Nov 20 17:19:58 siduction systemd-udevd[421]: wwan1: Failed to get link config: No such device
Nov 20 17:19:58 siduction systemd-udevd[428]: wwan2: Failed to get link config: No such device
Nov 20 17:19:58 siduction kernel: qcserial ttyUSB0: Qualcomm USB modem converter now disconnected from ttyUSB0
Nov 20 17:19:58 siduction kernel: qcserial 1-6:1.0: device disconnected
Nov 20 17:19:58 siduction kernel: qmi_wwan 1-6:1.2 wwan0: unregister 'qmi_wwan' usb-0000:00:14.0-6, WWAN/QMI device
Nov 20 17:19:58 siduction kernel: qmi_wwan 1-6:1.3 wwan1: unregister 'qmi_wwan' usb-0000:00:14.0-6, WWAN/QMI device
Nov 20 17:19:58 siduction kernel: qmi_wwan 1-6:1.8 wwan2: unregister 'qmi_wwan' usb-0000:00:14.0-6, WWAN/QMI device
Nov 20 17:19:58 siduction kernel: qcserial 1-6:1.0: Qualcomm USB modem converter detected
Nov 20 17:19:58 siduction kernel: usb 1-6: Qualcomm USB modem converter now attached to ttyUSB0
Nov 20 17:19:58 siduction kernel: qmi_wwan 1-6:1.2: bogus CDC Union: master=0, slave=0
Nov 20 17:19:58 siduction kernel: qmi_wwan 1-6:1.2: cdc-wdm0: USB WDM device
Nov 20 17:19:58 siduction kernel: qmi_wwan 1-6:1.2 wwan0: register 'qmi_wwan' at usb-0000:00:14.0-6, WWAN/QMI device, a2:cb:b5:d1:49:97
Nov 20 17:19:58 siduction kernel: qmi_wwan 1-6:1.3: bogus CDC Union: master=0, slave=0
Nov 20 17:19:58 siduction kernel: qmi_wwan 1-6:1.3: cdc-wdm1: USB WDM device
Nov 20 17:19:58 siduction kernel: qmi_wwan 1-6:1.3 wwan1: register 'qmi_wwan' at usb-0000:00:14.0-6, WWAN/QMI device, a2:cb:b5:d1:49:97
Nov 20 17:19:58 siduction kernel: qmi_wwan 1-6:1.8: cdc-wdm2: USB WDM device
Nov 20 17:19:58 siduction kernel: qmi_wwan 1-6:1.8 wwan2: register 'qmi_wwan' at usb-0000:00:14.0-6, WWAN/QMI device, a2:cb:b5:d1:49:97
Nov 20 17:19:58 siduction systemd[1]: usb_modeswitch@1-6.service: Start request repeated too quickly.
Nov 20 17:19:58 siduction systemd[1]: usb_modeswitch@1-6.service: Failed with result 'signal'.
Nov 20 17:19:58 siduction systemd[1]: Failed to start USB_ModeSwitch_1-6.
Nov 20 17:19:58 siduction kernel: qcserial ttyUSB0: Qualcomm USB modem converter now disconnected from ttyUSB0
Nov 20 17:19:58 siduction kernel: qcserial 1-6:1.0: device disconnected
Nov 20 17:19:58 siduction kernel: qmi_wwan 1-6:1.2 wwan0: unregister 'qmi_wwan' usb-0000:00:14.0-6, WWAN/QMI device
Nov 20 17:19:58 siduction kernel: qmi_wwan 1-6:1.3 wwan1: unregister 'qmi_wwan' usb-0000:00:14.0-6, WWAN/QMI device
Nov 20 17:19:58 siduction kernel: qmi_wwan 1-6:1.8 wwan2: unregister 'qmi_wwan' usb-0000:00:14.0-6, WWAN/QMI device
Nov 20 17:19:58 siduction kernel: qcserial 1-6:1.0: Qualcomm USB modem converter detected
Nov 20 17:19:58 siduction kernel: usb 1-6: Qualcomm USB modem converter now attached to ttyUSB0
Nov 20 17:19:58 siduction kernel: qmi_wwan 1-6:1.2: bogus CDC Union: master=0, slave=0
Nov 20 17:19:58 siduction kernel: qmi_wwan 1-6:1.2: cdc-wdm0: USB WDM device
Nov 20 17:19:58 siduction kernel: qmi_wwan 1-6:1.2 wwan0: register 'qmi_wwan' at usb-0000:00:14.0-6, WWAN/QMI device, a2:cb:b5:d1:49:97
Nov 20 17:19:58 siduction kernel: qmi_wwan 1-6:1.3: bogus CDC Union: master=0, slave=0
Nov 20 17:19:58 siduction kernel: qmi_wwan 1-6:1.3: cdc-wdm1: USB WDM device
Nov 20 17:19:58 siduction kernel: qmi_wwan 1-6:1.3 wwan1: register 'qmi_wwan' at usb-0000:00:14.0-6, WWAN/QMI device, a2:cb:b5:d1:49:97
Nov 20 17:19:58 siduction kernel: qmi_wwan 1-6:1.8: cdc-wdm2: USB WDM device
Nov 20 17:19:58 siduction kernel: qmi_wwan 1-6:1.8 wwan2: register 'qmi_wwan' at usb-0000:00:14.0-6, WWAN/QMI device, a2:cb:b5:d1:49:97
Nov 20 17:19:58 siduction systemd[1]: usb_modeswitch@1-6.service: Start request repeated too quickly.
Nov 20 17:19:58 siduction systemd[1]: usb_modeswitch@1-6.service: Failed with result 'signal'.
Nov 20 17:19:58 siduction systemd[1]: Failed to start USB_ModeSwitch_1-6.
Nov 20 17:19:58 siduction systemd-udevd[417]: wwan1: Failed to get link config: No such device
Nov 20 17:19:58 siduction systemd-udevd[430]: wwan2: Failed to get link config: No such device
Nov 20 17:19:58 siduction systemd-udevd[425]: wwan0: Failed to get link config: No such device
Nov 20 17:19:58 siduction kernel: qcserial ttyUSB0: Qualcomm USB modem converter now disconnected from ttyUSB0
Nov 20 17:19:58 siduction kernel: qcserial 1-6:1.0: device disconnected
Nov 20 17:19:58 siduction kernel: qmi_wwan 1-6:1.2 wwan0: unregister 'qmi_wwan' usb-0000:00:14.0-6, WWAN/QMI device
Nov 20 17:19:58 siduction kernel: qmi_wwan 1-6:1.3 wwan1: unregister 'qmi_wwan' usb-0000:00:14.0-6, WWAN/QMI device
Nov 20 17:19:58 siduction kernel: qmi_wwan 1-6:1.8 wwan2: unregister 'qmi_wwan' usb-0000:00:14.0-6, WWAN/QMI device
Nov 20 17:19:58 siduction kernel: qcserial 1-6:1.0: Qualcomm USB modem converter detected
Nov 20 17:19:58 siduction kernel: usb 1-6: Qualcomm USB modem converter now attached to ttyUSB0
Nov 20 17:19:58 siduction kernel: qmi_wwan 1-6:1.2: bogus CDC Union: master=0, slave=0
Nov 20 17:19:58 siduction kernel: qmi_wwan 1-6:1.2: cdc-wdm0: USB WDM device
Nov 20 17:19:58 siduction kernel: qmi_wwan 1-6:1.2 wwan0: register 'qmi_wwan' at usb-0000:00:14.0-6, WWAN/QMI device, a2:cb:b5:d1:49:97
Nov 20 17:19:58 siduction kernel: qmi_wwan 1-6:1.3: bogus CDC Union: master=0, slave=0


--- End code ---

EDIT
With kernel : linux-image-5.9.9-towo.3-siduction-amd64 it is the same as
linux-image-5.9.9-towo.2-siduction-amd64

With kernel linux-image-5.9.10-towo.1-siduction-amd64 -> kernel-panic in rescue mode

Regards

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