https://bugs.freedesktop.org/show_bug.cgi?id=99368
Bug ID: 99368 Summary: Full aspect scaling introduces interlacing on specific resolutions Product: DRI Version: unspecified Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: normal Priority: medium Component: DRM/Radeon Assignee: dri-devel@lists.freedesktop.org Reporter: gamwizh00@gmail.com
Created attachment 128897 --> https://bugs.freedesktop.org/attachment.cgi?id=128897&action=edit dmesg log
When using full aspect scaling in xrandr on a laptop with an A6-6310 apu the display is showing interlaced lines across the whole display.
This happens only on some of the supported resolutions of the integrated display, those being 1280x720 and 1152x768.
https://bugs.freedesktop.org/show_bug.cgi?id=99368
--- Comment #1 from Platin gamwizh00@gmail.com --- Created attachment 128898 --> https://bugs.freedesktop.org/attachment.cgi?id=128898&action=edit Xorg log
https://bugs.freedesktop.org/show_bug.cgi?id=99368
--- Comment #2 from Platin gamwizh00@gmail.com --- Created attachment 128899 --> https://bugs.freedesktop.org/attachment.cgi?id=128899&action=edit xrandr --verbose
https://bugs.freedesktop.org/show_bug.cgi?id=99368
--- Comment #3 from Platin gamwizh00@gmail.com --- Created attachment 128901 --> https://bugs.freedesktop.org/attachment.cgi?id=128901&action=edit Image showing interlacing
https://bugs.freedesktop.org/show_bug.cgi?id=99368
--- Comment #4 from Platin gamwizh00@gmail.com --- The interlacing is not visible on screenshots
https://bugs.freedesktop.org/show_bug.cgi?id=99368
Platin gamwizh00@gmail.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Attachment #128898|0 |1 is obsolete| |
--- Comment #5 from Platin gamwizh00@gmail.com --- Created attachment 129229 --> https://bugs.freedesktop.org/attachment.cgi?id=129229&action=edit Correct Xorg log
Didn't know that GDM doesn't store the Xorg log in the usual location. So I accidentally uploaded an obsolete log. Replaced it with the correct log.
I tried lower resolutions with the amdgpu driver and the problem shows even there. So I'm not sure if the problem exists on both drivers or if the source of the problem lies elsewhere.
Does anyone have an idea?
https://bugs.freedesktop.org/show_bug.cgi?id=99368
--- Comment #6 from Adam Bolte abolte@systemsaviour.com --- I'm seeing this too. Running a BenQ XL2730Z (2560x1440@144Hz) gaming monitor, but some games (eg. Prototype 2 under Wine, Saints Row 2) only accept resolutions up to 1920x1080. They cause GPU scaling to automatically kick in (the monitor reports the resolution is still 2560x1440) and everything looks too horrible to look at.
Fury X, Mesa 17.0.1.
If I run the scaling mode with Center instead of Full aspect, everything looks great (but annoyingly small).
https://bugs.freedesktop.org/show_bug.cgi?id=99368
--- Comment #7 from Platin gamwizh00@gmail.com --- The issue is fixed on the mainline kernel 4.17.0-rc6 using the amdgpu drm driver. This was recently fixed it seems since the issue persists on 4.16.11.
It is required to force enable DC though. Without it, it won't work.
https://bugs.freedesktop.org/show_bug.cgi?id=99368
Martin Peres martin.peres@free.fr changed:
What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |MOVED
--- Comment #8 from Martin Peres martin.peres@free.fr --- -- GitLab Migration Automatic Message --
This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.
You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/drm/amd/issues/770.
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