[Bug 2083022] Re: [SRU] Fix AST DP output after resume

This bug is awaiting verification that the linux/6.8.0-50.51 kernel in
-proposed solves the problem. Please test the kernel and update this bug
with the results. If the problem is solved, change the tag
'verification-needed-noble-linux' to 'verification-done-noble-linux'. If
the problem still exists, change the tag 'verification-needed-noble-
linux' to 'verification-failed-noble-linux'.


If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.


See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!


** Tags added: kernel-spammed-noble-linux-v2 verification-needed-noble-linux

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https://bugs.launchpad.net/bugs/2083022

Title:
[SRU] Fix AST DP output after resume

Status in HWE Next:
In Progress
Status in linux package in Ubuntu:
Fix Released
Status in linux-oem-6.8 package in Ubuntu:
Invalid
Status in linux source package in Jammy:
In Progress
Status in linux-oem-6.8 source package in Jammy:
In Progress
Status in linux source package in Noble:
Fix Committed
Status in linux-oem-6.8 source package in Noble:
Fix Released
Status in linux source package in Oracular:
Fix Released
Status in linux-oem-6.8 source package in Oracular:
Invalid

Bug description:
[Impact]
After resume from suspend, the mini-DP output from ASPEED BMC card
is either blank or mess up.

[Fix]
From upstream 6.11 kernel,

1, a fix of the blank screen after resume:
12c35c5582acb drm/ast: Fix black screen after resume

2, DP detection fix:
0ce91928ec62d drm/ast: astdp: Wake up during connector status detection

3, the patchset refactors the CRTC's mode-setting code:
https://lore.kernel.org/all/20240627153638.8765-1-tzimmermann@suse.de/

[Test]
Tested on hardware by vendor for 10 times of suspend and resume.
The screen is OK.

[Where problems could occur]
It may break ASPEED drm support.

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