Red Hat Bugzilla – Bug 111539
X Radeon driver no longer detecting second display after installing latest updates
Last modified: 2007-04-18 12:59:57 EDT
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Description of problem:
I performed an update of my Red Hat Linux 9 system (using apt against
freshrpms.net's redhat os and updates repositories). After the update
finished, I restarted my machine, and at that point the X Radeon
driver would no longer detect the second display. This results in
both my monitors displaying the same thing. I miss my Xinerama (*sniff*).
The XFree86.0.log file at the above URL has the exact message at line 667:
(WW) RADEON(1): Only one monitor detected, Second screen will NOT be
Additionally, I have placed my XF86Config file at the above URL.
This configuration was working perfectly before the update.
The graphics card in question is an ATI Radeon VE (Dell Precision
350n) with dual-display support, configured for dual VGA outputs.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Configure X for dual-head Xinerama support
2. Start X
3. Watch X ignore the second head and start in single-head mode
Actual Results: X started in single-head mode.
Expected Results: X should have started in dual-head mode with
Since this bugzilla report was filed, there have been several major
updates to the X Window System, which may resolve this issue. Users
who have experienced this problem are encouraged to upgrade to the
latest version of Fedora Core, which can be obtained from:
If this issue turns out to still be reproduceable in the latest
version of Fedora Core, please file a bug report in the X.Org
bugzilla located at http://bugs.freedesktop.org in the "xorg"
Once you've filed your bug report to X.Org, if you paste the new
bug URL here, Red Hat will continue to track the issue in the
centralized X.Org bug tracker, and will review any bug fixes that
become available for consideration in future updates.