Regression: amdgpu mirror mode broken in -1018

Bug #2028848 reported by Timo Aaltonen
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux-oem-6.1 (Ubuntu)
Fix Released

Bug Description


OEM-6.1 1018 picks up this patch which was accidentally introduced even though reverted upstream.

    - drm/amd/display: edp do not add non-edid timings

It's already reverted in 6.5 and being reverted in 6.1.42, can you please revert in advance in Ubuntu's kernel so we don't have the regression for a whole Canonical kernel cycle?

It will break mirror mode for all external monitors.

Here is the discussion on the revert.

[Test case]

Check mirror mode with the commit reverted.

[Where things could go wrong]

This is an upstream revert removing a broken commit, so it should not cause unrelated issues.

Timo Aaltonen (tjaalton)
Changed in linux-oem-6.1 (Ubuntu):
status: New → Invalid
Timo Aaltonen (tjaalton)
tags: added: verification-done
Changed in linux-oem-6.1 (Ubuntu Jammy):
status: New → Fix Committed
Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package linux-oem-6.1 - 6.1.0-1019.19

linux-oem-6.1 (6.1.0-1019.19) jammy; urgency=medium

  * jammy/linux-oem-6.1: 6.1.0-1019.19 -proposed tracker (LP: #2029478)

  * ubuntu_bpf failed to build with j-oem-6.1.0-1018.18 (LP: #2028932)
    - SAUCE: Revert "libbpf: fix offsetof() and container_of() to work with CO-RE"

  * Regression: amdgpu mirror mode broken in -1018 (LP: #2028848)
    - Revert "drm/amd/display: edp do not add non-edid timings"

  * Miscellaneous Ubuntu changes
    - [Config] Update gcc/pahole versions.

 -- Timo Aaltonen <email address hidden> Sat, 05 Aug 2023 14:53:47 +0300

Changed in linux-oem-6.1 (Ubuntu Jammy):
status: Fix Committed → Fix Released
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