Bug 1740 - Sometimes X shows strange horizontal lines and random dots in images when using radeon driver, after shutting down X, screen is blank
Summary: Sometimes X shows strange horizontal lines and random dots in images when usi...
Status: RESOLVED FIXED
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/Radeon (show other bugs)
Version: 6.8.0
Hardware: x86 (IA32) Linux (All)
: high normal
Assignee: Xorg Project Team
QA Contact:
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2004-10-31 01:21 UTC by mrsteven
Modified: 2005-09-24 10:31 UTC (History)
0 users

See Also:
i915 platform:
i915 features:

Attachments
My xorg.conf (4.82 KB, text/plain)
2004-10-31 01:22 UTC, mrsteven 		no flags Details
faked corrupted image (29.44 KB, image/png)
2004-10-31 01:33 UTC, mrsteven 		no flags Details
View All

Description mrsteven 2004-10-31 01:21:55 UTC 
When I viewed some povray rendered images yesterday, I noticed some strange
horizontal lines and random dots in all images. When I moved the image window or
resized it, the lines and dots moved to another position within the image. 
After switching to a text console with ctrl+alt+f1 and going back to X with
ctrl+alt+f7, the lines and dots disappeared, but after shutting down X, I ended
up with a blank screen (maybe that is related to this problem).
Since most of the pictures are .png, but some are .bmp, I'm really sure, that
this is a bug in Xorg, also because I noticed the problem in Kuickshow,
Konqueror and Mozilla.

I use:
* Gentoo Linux
* xorg-x11-6.8.0-r1 from portage (should be almost the same as the official
xorg-6.8.1)
* radeon driver from xorg, with an ATI Mobility Radeon 9600
* vanilla Kernel 2.6.9 without framebuffer
* sys-libs/glibc-2.3.4.20040808-r1
Comment 1 mrsteven 2004-10-31 01:22:56 UTC 
Created attachment 1193 [details]
My xorg.conf
Comment 2 mrsteven 2004-10-31 01:33:40 UTC 
Created attachment 1194 [details]
faked corrupted image

The corruption looks like this.
I don't remember how it looked like exactly, but this should be close to it.
Comment 3 mrsteven 2004-10-31 03:43:31 UTC 
Now I know how to reproduce it:

1) Start kuickshow
2) Open settings dialog
3) Check "scale small pictures up to factor" and enter 2 into the entry field.
4) Start slideshow with some images
5) Wait until you notice strange lines...
6) Now you notice the corruption in every application.
7) If you move the window horicontally, you see the lines staying at the same
position on the screen until they disappear
Comment 4 T. Hood 2005-09-23 08:03:19 UTC 
Are you able to solve the problem by disabling features of the driver with
Option lines in xorg.conf?
Comment 5 mrsteven 2005-09-23 11:04:09 UTC 
Well, I didn't notice that bug with newer versions of Xorg like 6.8.2. I don't  
really know what changed, it could also have been a bug in the kernel. I really  
have no idea, but it works now...
Comment 6 T. Hood 2005-09-25 03:31:47 UTC 
> it works now... 

Good to hear.

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