https://bugs.freedesktop.org/show_bug.cgi?id=41418
Summary: [RV350] Screen corruption with certain resolutions on LVDS (scaled) Product: DRI Version: unspecified Platform: x86 (IA32) OS/Version: Linux (All) Status: NEW Severity: normal Priority: medium Component: DRM/Radeon AssignedTo: dri-devel@lists.freedesktop.org ReportedBy: dev@karlchenofhell.org
I'm getting a screen corruption with the resolutions 1400x1050 1440x900 on a RV350, using kernel-3.0.4, libdrm-2.4.26.
A photograph of the corrupted screen under X is attached, though the corruption also appears using tests/modetest w/o X started.
-------- # lspci -nns1:0.0 01:00.0 VGA compatible controller [0300]: ATI Technologies Inc M10 NT [FireGL Mobility T2] [1002:4e54] (rev 80) --------
https://bugs.freedesktop.org/show_bug.cgi?id=41418
--- Comment #1 from Franz Brauße dev@karlchenofhell.org 2011-10-03 07:42:20 PDT --- Created an attachment (id=51894) --> (https://bugs.freedesktop.org/attachment.cgi?id=51894) Corrupted screen
https://bugs.freedesktop.org/show_bug.cgi?id=41418
--- Comment #2 from Franz Brauße dev@karlchenofhell.org 2011-10-03 07:45:55 PDT --- Created an attachment (id=51895) --> (https://bugs.freedesktop.org/attachment.cgi?id=51895) dmesg output of a modetest run with 1400x1050 resolution and drm.debug=15
https://bugs.freedesktop.org/show_bug.cgi?id=41418
Franz Brauße dev@karlchenofhell.org changed:
What |Removed |Added ---------------------------------------------------------------------------- Attachment #51895|application/octet-stream |text/plain mime type| |
https://bugs.freedesktop.org/show_bug.cgi?id=41418
--- Comment #3 from Franz Brauße dev@karlchenofhell.org 2011-10-03 08:36:17 PDT --- The issue is also present in the latest git kernel from today, 3.1.0-rc8+, commit 9b13776977d45505469edc6decc93e9e3799afe2
https://bugs.freedesktop.org/show_bug.cgi?id=41418
--- Comment #4 from Franz Brauße dev@karlchenofhell.org 2011-10-03 08:42:26 PDT --- Created an attachment (id=51898) --> (https://bugs.freedesktop.org/attachment.cgi?id=51898) complete dmesg for 3.1.0-rc8+
https://bugs.freedesktop.org/show_bug.cgi?id=41418
--- Comment #5 from Alex Deucher agd5f@yahoo.com 2011-10-04 06:43:32 PDT --- Can you attach the output of xrandr --verbose? Note that Full aspect scaling is not implemented for pre-avivo asics, so make sure you are not using that. Center and Full do work however.
https://bugs.freedesktop.org/show_bug.cgi?id=41418
--- Comment #6 from Franz Brauße dev@karlchenofhell.org 2011-10-05 11:40:51 PDT --- Created an attachment (id=52020) --> (https://bugs.freedesktop.org/attachment.cgi?id=52020) xrandr --verbose with several 'scaling mode' properties
Appearently the scaling mode property was set to "Full" by default.
There is no difference in the visible image between "Full" and "Full aspect" scaling mode, "Center" does enable the backlight but the screen stays black, "None" shows the FB at coords (0,0) and a cloned portion of it below separated by a black horizontal bar as the native display resolution of 1600x1200 is used (so I'd say that one works).
I've attached xrandr --verbose outputs for "Full", "None" and the non-working "Center" scaling modes using 1400x1050 resolution. If those outputs for 1440x900 would help, too, I'll upload them as well.
Thank you for taking a look at this issue.
https://bugs.freedesktop.org/show_bug.cgi?id=41418
Martin Peres martin.peres@free.fr changed:
What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |MOVED Status|NEW |RESOLVED
--- Comment #7 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/215.
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