Fix resume failure on Tongfang GMxZGxx Barebone

[Werner Sembach]

SRU Justification:

Impact:
The Tongfang GMxZGxx Barebone and propably also other new AMD based laptops fail to resume after suspend, and reboot instead with the 5.11 or earlier kernel.

Fix:
There is a quirk in newer linux kernel that can easily applied to 5.11 also.

Testcase:
A colleauge tested on a Tongfang GMxZGxx. The Ubuntu 5.11 kernel without the patch fails to resume, with the patch the issue is gone.

Patch on upstream:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d1658268e43980c071dbffc3d894f6f6c4b6732a

Commit-hash:
d1658268e43980c071dbffc3d894f6f6c4b6732a

[Werner Sembach (matombo)]

(I messed up: The patch is already in 5.11, what I somehow missed when checking for it.)

Scratch that: the patch is only in 5.4 not in 5.11

[Mario Limonciello (superm1)]

FYI, that patch is intended specifically for s2idle, which will not work on those older kernels without significant other backports. Are you sure that this patch alone really helps the issue?

[Werner Sembach (matombo)]

Yes, this patch alone fixed the problem.

I tested 5.11.0-26 today, which has this patch included and it works now ^^.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

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 1936583

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.

[Werner Sembach (matombo)]

The issue was fixed in focal hwe 5.11.0-26 kernel in proposed, but props up in hwe 5.11.0-27 again because hwe-27 is directly based on hwe-25 and not on -26

Very unusual pattern in the kernel log: https://kernel.ubuntu.com/git/ubuntu/ubuntu-focal.git/log/?h=Ubuntu-hwe-5.11-5.11.0-27.29_20.04.1
Hirsute-25 + HWE Alterations -> HWE-25 + Patches + Additional HWE Alternations -> HWE-27
as oposed to the normal way https://kernel.ubuntu.com/git/ubuntu/ubuntu-focal.git/log/?h=Ubuntu-hwe-5.11-5.11.0-26.28_20.04.1
Hirsute-26 + HWE Alterations -> HWE-26

[Werner Sembach (matombo)]

Seems to be fixed again in 5.11.0-34

[Brian Murray (brian-murray)]

The Hirsute Hippo has reached End of Life, so this bug will not be fixed for that release.