Bug 763003 – sys-kernel/git-sources-5.11_rc1 and sys-kernel/vanilla-sources-5.10.4 amdgpu no signal after monitor power off/on

• Status: RESOLVED UPSTREAM
• Product: Gentoo Linux

[Description jospezial 2021-01-02 00:51:42 UTC]

With sys-kernel/git-sources-5.11_rc1 and sys-kernel/vanilla-sources-5.10.4 my tv shows no signal from HDMI if I switch it off and on when X on screen.

Bug was is not in sys-kernel/vanilla-sources-5.10 and not in sys-kernel/vanilla-sources-5.10.3.

kernel: [drm:dm_restore_drm_connector_state [amdgpu]] *ERROR* Restoring old state failed with -12

01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Baffin [Radeon RX 460/560D / Pro 450/455/460/555/555X/560/560X] (rev e5)
LG TV on HDMI

[Comment 1 Mike Pagano 2021-01-02 20:40:13 UTC]

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a861736dae64

[Comment 2 Mike Pagano 2021-01-02 20:40:41 UTC]

https://gitlab.freedesktop.org/drm/amd/-/issues/1407

[Comment 3 jospezial 2021-01-07 17:44:37 UTC]

This bug is caused by
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a135a1b4c4db1f3b8cbed9676a40ede39feb3362
"drm/amd/display: Fix memory leaks in S3 resume"

regression bug report:
https://bugzilla.kernel.org/show_bug.cgi?id=211033

The failing commit will be reverted with next stable releases 5.10.6 and possibly 5.4.88.
https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/commit/?id=2f168cf391c8f615a95ab7d5264db880b225ab22

https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-5.10/revert-drm-amd-display-fix-memory-leaks-in-s3-resume.patch?id=2f168cf391c8f615a95ab7d5264db880b225ab22

[Comment 4 jospezial 2021-01-11 08:17:52 UTC]

The failing commit has been reverted upstream everywhere.