Comment 4 for bug 2070020

Hi everyone,

Okay, I have gotten test kernels building. They have the below commit reverted on 6.5.0-41-generic:

commit 286f3a7ccae334cef008c6be713c7c30427243c1 ubuntu-mantic
Author: Wayne Lin <email address hidden>
Date: Tue Jan 2 14:20:37 2024 +0800
Subject: drm/amd/display: Align the returned error code with legacy DP
Link: https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/mantic/commit/?id=286f3a7ccae334cef008c6be713c7c30427243c1

Its going to take three hours from the time of this comment for them to build. You can check build status here:

https://launchpad.net/~mruffell/+archive/ubuntu/lp2070020-test

Can someone please try the test kernel and let me know if it fixes the issue?

Please note this package is NOT SUPPORTED by Canonical, and is for TESTING
PURPOSES ONLY. ONLY Install in a dedicated test environment.

Instructions to Install (On a jammy or mantic system):
1) sudo add-apt-repository ppa:mruffell/lp2070020-test
2) sudo apt update
3) sudo apt install linux-image-unsigned-6.5.0-41-generic linux-modules-6.5.0-41-generic linux-modules-extra-6.5.0-41-generic linux-headers-6.5.0-41-generic
4) sudo reboot
5) uname -rv
Look for "+TEST2070020v20240625b1".

You might be asked to abort removal of the current running kernel, say no. Also, you might need to turn off secureboot if its on, since I can't sign secureboot kernels.

Does your external thunderbolt displays go back to normal? Let me know.

If they don't work we will likely do a full bisect.

Thanks,
Matthew