[Bug 1937988] Re: The image is distorted while use iGPU rendering and output via AMD GPU
Ćukasz Zemczak
1937988 at bugs.launchpad.net
Mon Aug 9 14:06:11 UTC 2021
Hello jeremyszu, or anyone else affected,
Accepted mesa into hirsute-proposed. The package will build now and be
available at https://launchpad.net/ubuntu/+source/mesa/21.0.3-0ubuntu0.3
in a few hours, and then in the -proposed repository.
Please help us by testing this new package. See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed. Your feedback will aid us getting this
update out to other Ubuntu users.
If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, what testing has been
performed on the package and change the tag from verification-needed-
hirsute to verification-done-hirsute. If it does not fix the bug for
you, please add a comment stating that, and change the tag to
verification-failed-hirsute. In either case, without details of your
testing we will not be able to proceed.
Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in
advance for helping!
N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.
** Changed in: mesa (Ubuntu Hirsute)
Status: New => Fix Committed
** Tags added: verification-needed verification-needed-hirsute
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https://bugs.launchpad.net/bugs/1937988
Title:
The image is distorted while use iGPU rendering and output via AMD GPU
Status in OEM Priority Project:
In Progress
Status in mesa package in Ubuntu:
Fix Committed
Status in mesa source package in Focal:
Fix Committed
Status in mesa source package in Hirsute:
Fix Committed
Bug description:
[Impact]
Image is distorted with PRIME, caused by mismatch in stride alignment between intel and amdgpu/nvidia after intel bumped the alignment to 256 bytes.
[Fix]
Upstream fixed it in 21.2-series, and backport to 21.0.x needs four commits in total.
[Test case]
1. Connect a monitor on the AMD GPU.
2. Power on the system and boot into OS.
3. Run below command to launch glxgears
Cmd> DRI_PRIME=1 glxgears -info
* Expected result
The image is not distorted while running the glxgears
* Actual result
The image is distorted while running the glxgears
[Where things might go wrong]
This is a regression caused by the intel driver, so the backports merely fix what got broken. Regressions would only manifest on hybrid graphics platforms.
---
Here is the upstream bug for tracking this issue.
https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11942?commit_id=505f815e5ead8c9872bbda4c1ff3aeaee7223d64
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