Bug 21319 - Black screen on Iiyama Vision Master 450
Summary: Black screen on Iiyama Vision Master 450
Status: RESOLVED INVALID
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/Radeon (show other bugs)
Version: unspecified
Hardware: Other All
: medium normal
Assignee: xf86-video-ati maintainers
QA Contact: Xorg Project Team
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2009-04-21 05:09 UTC by Jeremy Henty
Modified: 2018-06-12 19:07 UTC (History)
0 users

See Also:
i915 platform:
i915 features:


Attachments
Default xorg.conf that displays the bug (4.41 KB, text/plain; charset=us-ascii)
2009-04-21 05:29 UTC, Jeremy Henty
no flags Details
Server log from a buggy X session. (4.41 KB, text/plain; charset=us-ascii)
2009-04-21 05:32 UTC, Jeremy Henty
no flags Details
Server log from buggy session. (39.53 KB, text/plain; charset=us-ascii)
2009-04-21 05:36 UTC, Jeremy Henty
no flags Details
Fixed xorg.conf . (4.55 KB, text/plain; charset=us-ascii)
2009-04-21 05:39 UTC, Jeremy Henty
no flags Details
Server log of fixed session (39.52 KB, text/plain; charset=us-ascii)
2009-04-21 05:43 UTC, Jeremy Henty
no flags Details

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Description Jeremy Henty 2009-04-21 05:09:36 UTC
Xorg 7.4 displays a black screen and hangs on my Iiyama Vision Master 450.
Xorg 7.2 worked out of the box.
Discussion on the x.org list identified bogus EDID data as the problem.
The server attempts to use a 1600x1200 mode that does not work.
The workaround is to add 'Modes "1280x1204"' to all the Display subsections of xorg.conf, then the server starts OK.
System is GNU/Linux, kernel 2.6.27.21, gcc 4.1.2, glibc 2.5.1.
Video card is ATI Radeon 9250 PCI
Versions: xorg-server-1.5.3, xf86-video-ati-6.12.2.
Comment 1 Jeremy Henty 2009-04-21 05:29:08 UTC
Created attachment 24994 [details]
Default xorg.conf that displays the bug

This is a copy of the default xorg.conf created by "Xorg -configure".
It reproduces the bug as described.
Comment 2 Jeremy Henty 2009-04-21 05:32:53 UTC
Created attachment 24995 [details]
Server log from a buggy X session.

This the server log using the previous xorg.conf and running "X -config <conf>".
The screen goes blank.  I recovered with Alt-SysRq-r , Ctrl-Alt-F1 , Ctrl-C .
Comment 3 Jeremy Henty 2009-04-21 05:36:04 UTC
Created attachment 24996 [details]
Server log from buggy session.

Oops, I resubmitted the xorg.conf last time.  *This* is the server log.
Comment 4 Jeremy Henty 2009-04-21 05:39:36 UTC
Created attachment 24997 [details]
Fixed xorg.conf .

This is a new xorg.conf, same as the old one except for adding Modes lines as described in the bug description.
With this configuration the server displays the background and cursor as you would expect.
Comment 5 Jeremy Henty 2009-04-21 05:43:23 UTC
Created attachment 24998 [details]
Server log of fixed session

This is the log of a successful session using the fixed xorg.conf submitted above.
The session was started and stopped exactly as before, only the config file is different.
The diff of the logs is very small.
Comment 6 Adam Jackson 2018-06-12 19:07:06 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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