Bug 503971 - screen corruption, noise on resize (ATI, DVI)
screen corruption, noise on resize (ATI, DVI)
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: xorg-x11-server (Show other bugs)
x86_64 Linux
low Severity medium
: rc
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Assigned To: Adam Jackson
: Triaged
Depends On:
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Reported: 2009-06-03 11:27 EDT by Mark Gordon
Modified: 2013-07-28 19:40 EDT (History)
3 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2012-04-17 16:08:40 EDT
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Regression: ---
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
Screenshot of 1600x1200 corruption, incidently including xrandr output (1.34 MB, image/png)
2009-06-03 11:27 EDT, Mark Gordon
no flags Details

  None (edit)
Description Mark Gordon 2009-06-03 11:27:28 EDT
Created attachment 346408 [details]
Screenshot of 1600x1200 corruption, incidently including xrandr output

Description of problem:
Resizing the display using gnome-display-properties produces pathological results for several resolutions when using the DVI connection.  At 1600x1200, there's a great deal of corruption which is especially visible when windows are dragged, though even initial rendering is messed up.  I'm able to capture the results in a screenshot.  At 1440x900, there's a noisy, flickering vertical band along the right edge of the screen, but it doesn't show up in a screenshot.  None of the other resolutions have any such problems, and the VGA resolutions are all fine.  This is a first look at 5.4, and I'm not sure how hardware-specific this problem is, but since the problem is limited to a few resolutions, it's clearly not completely general.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. run gnome-display-properties
2. change resolution to 1600x1200
3. change resolution to 1440x900
Actual results:
corruption (1600x1200), noise (1440x900)

Expected results:
Reasonably sane rendering

Additional info:
ATI FireGL 8800 AGP card
acer X223W monitor
DVI connection
Comment 2 Dave Airlie 2009-09-15 17:27:51 EDT
can you see if changing the driver from radeon to r500 in xorg.conf helps?
Comment 3 Mark Gordon 2009-09-16 15:17:43 EDT
It does.  The noise goes away.  

(For the record, the noise is slightly changed in the final radeon driver; the noise I had been seeing at 1440x900 is now also evident at 1600x1200 instead of the corruption previously seen at 1600x1200.)
Comment 6 Adam Jackson 2012-04-17 16:08:40 EDT
No further hardware enablement updates are planned for RHEL5's X stack.  If this issue remains in RHEL6, please update the affected product version and reopen this bug.

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