FS#48143 - [linux] Problems with USB 4G modem on kernel 4.4.1

Attached to Project: Arch Linux
Opened by Sergey (versusvoid) - Thursday, 11 February 2016, 14:57 GMT
Last edited by Doug Newgard (Scimmia) - Friday, 02 December 2016, 00:02 GMT
Task Type Bug Report
Category Kernel
Status Closed
Assigned To Tobias Powalowski (tpowa)
Architecture x86_64
Severity High
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Description:
After update to kernel 4.4.1-2 inserting usb 4G (Yota) modem produce no desired effect (it does not work). Invoking 'lsusb' gives no output, hangs and can't be killed with 'kill -9'. If 'lsusb' was invoked, machine hangs during shutdown. Reproduced on two different machines, both after update to new kernel.

When modem inserted before system startup, message about "kernel NULL pointer" appears in dmesg.


Attached device.txt - output of lsusb on this modem from liveusb archlinux with older kernel.
This task depends upon

Closed by  Doug Newgard (Scimmia)
Friday, 02 December 2016, 00:02 GMT
Reason for closing:  Fixed
Comment by Sergey (versusvoid) - Thursday, 11 February 2016, 14:58 GMT
Missing files from bug description.
   device.txt (3.1 KiB)
   dmesg.txt (67.2 KiB)
Comment by Doug Newgard (Scimmia) - Thursday, 11 February 2016, 15:35 GMT
Reporting upstream kernel issues here isn't going to do much.
Comment by Sergey (versusvoid) - Sunday, 17 April 2016, 19:01 GMT
Fixed in 4.5 kernel, but appeared in 4.4.7-lts. I don't see any use in this ticket, so close at will.