mt7921e device disappear after warm boot stress
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
HWE Next |
Fix Released
|
Undecided
|
Unassigned | ||
OEM Priority Project |
Fix Released
|
Undecided
|
Unassigned | ||
linux-firmware (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned | ||
Focal |
Fix Released
|
High
|
You-Sheng Yang | ||
Jammy |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
[SRU Justification]
[Impact]
mt7921e may not appear in the bus enumeration during warm boot stress tests.
[Fix]
This can only be fixed in the firmware.
[Test Case]
Run checkbox reboot stress tests to try trigger this issue:
$ checkbox-cli run com.canonical.
[Where problems could occur]
While this backports proprietary fw blob, it may bring driver
compatibility issues we cannot know in the first place.
Jammy has these already, so only Focal (for oem-5.14) is nominated.
We don't have mt7921e hardware v2.1 support in Impish 5.13 kernel.
========== original bug report ==========
[Summary]
mt7921 wlan device disappear after warm reset, can be recovered by cold boot.
[Reproduce Steps]
1. do warm boot stress 100 times
2. check wifi function after stress finished
3. wifi has no function and mt7921e device disappeared
[Results]
Expected: wifi works normally
Actual: wifi broken
tags: | added: oem-priority originate-from-1959195 somerville |
Changed in linux-firmware (Ubuntu Jammy): | |
status: | New → Fix Released |
no longer affects: | linux (Ubuntu) |
no longer affects: | linux (Ubuntu Focal) |
no longer affects: | linux (Ubuntu Jammy) |
Changed in linux-firmware (Ubuntu Focal): | |
status: | New → In Progress |
importance: | Undecided → High |
assignee: | nobody → You-Sheng Yang (vicamo) |
tags: | added: originate-from-1963596 sutton |
tags: | added: kern-2638 |
Changed in linux-firmware (Ubuntu Focal): | |
status: | In Progress → Fix Committed |
tags: | added: originate-from-1964309 |
Changed in oem-priority: | |
status: | New → Fix Released |
Changed in hwe-next: | |
status: | New → Fix Released |
This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1963614
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.