Bug 15037 - [Radeon] ColorTiling breaks when adding Interlaced modes with xrandr
Summary: [Radeon] ColorTiling breaks when adding Interlaced modes with xrandr
Status: RESOLVED INVALID
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/Radeon (show other bugs)
Version: git
Hardware: x86 (IA32) Linux (All)
: medium normal
Assignee: xf86-video-ati maintainers
QA Contact: Xorg Project Team
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2008-03-15 17:10 UTC by Jeremy Jackson
Modified: 2018-06-12 19:10 UTC (History)
1 user (show)

See Also:
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Description Jeremy Jackson 2008-03-15 17:10:00 UTC 
on Radeon Mobility 7500, in an IBM T30 Thinkpad, 1024x768 LCD panel, if VGA output is connected to RGB monitor with NTSC Interlaced timings, enabling the output causes the LCD display to "scramble" with rectangular tiles.

Putting Option "ColorTiling" "false" in xorg.conf prevents this issue.  A recent Git commit did not resolve the issue.

to reproduce (doesn't require a monitor - no DDC is present):

xrandr --newmode NTSCi 14.318 768 784 848 910 483 484 492 525 Interlace -VSync -HSync
xrandr --addmode VGA-0 NTSCi
xrandr --output VGA-0 --mode NTSCi

switching VGA-0 to a non-interlaced mode (NTSCp) restores the LCD display.
Comment 1 Jesse Adkins 2010-12-01 22:54:02 UTC 
Is this still an issue for you with a newer version of xserver?
Comment 2 Adam Jackson 2018-06-12 19:10:49 UTC 
Mass closure: This bug has been untouched for more than six years, and is not
obviously still valid. Please reopen this bug or file a new report if you continue to experience issues with current releases.

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