Red Hat Bugzilla – Bug 638103
Second monitor not enabled on F14 live CD by default
Last modified: 2010-09-28 21:05:36 EDT
Created attachment 450129 [details]
Output of the xrandr command
Description of problem:
Multihead not working on live CD. 'xrandr' command shows second monitor but it is not enabled. Second monitor is shown in gnome-display-properties but is not enabled. Running test for Test Day as per https://fedoraproject.org/wiki/QA:Testcase_nouveau_multihead
Version-Release number of selected component (if applicable):
Every time I use the live CD (desktop-x86_64-20100927.15.iso)
Steps to Reproduce:
1. Boot from Fedora 14 x86_64 live CD (desktop-x86_64-20100927.15.iso)
2. run gnome-display-properties and enable second monitor
The second monitor stays off (no signal).
The second monitor should be on during boot and after login. The desktop should be spanned across the two monitors.
- Smolt profile: http://www.smolts.org/client/show/pub_e7e80fe4-c516-46ad-8858-5c10e251f4c4
- no /etc/X11/xorg.conf file used.
- Attachment includes: gdm-0.log gregw_xrandr.log Xorg.0.log
To test the GLX for Test Day, https://fedoraproject.org/wiki/QA:Testcase_nouveau_glx, I installed mesa-dri-drivers-experimental, glx-utils, desktop-effect and compiz-gnome.
I turned on the effects (Wobbly windows and desktop cube). I ran gnome-display-properties again and enabled the second monitor. This time it worked. The rotating cube now has both desktops and the second monitor is active.
I will test again with the desktop effects off.
I rebooted the live CD image (no desktop effects). I noticed this time that plymouth correctly used the second monitor (mirrored). GDM login was with the second monitor blank. Login as the liveuser and still no second monitor. Running gnome-display-properties showed the monitor and this time when I enabled it and clicked 'apply' it came on.
The results are different from this initial testing. I will leave the laptop off for an hour and test again.
Laptop powered off for 1 hour. Test was the same as last test.
1. Plymouth enables both monitors in a mirrored configuration.
2. As soon as gdm changes the background and provides the login the second monitor goes off.
3. After login, running gnome-display-properties and enabling the second screen it works as expected.
Now I am not sure if the first test was accurate. Anyways the current problem is that the second monitor is not enabled by default.
*** This bug has been marked as a duplicate of bug 638174 ***