Red Hat Bugzilla – Bug 457673
Dual head / one big screen (ATI) configuration does not work in gnome
Last modified: 2018-04-11 03:27:29 EDT
Created attachment 313287 [details]
xorg.conf file for "one big screen" mode (ATI radeon)
Description of problem:
Dual head on an ATI dual DVI graphics adapter (RV350AP - Radeon 9600, free radeon driver) works during bootup and on login screen (shows one big destop - ATI xinerama mode), but switches to cloned desktop after logging in. After logged in can switch back to "one big screeen" using xrandr --output DVI-0 --right-of DVI-1
Version-Release number of selected component (if applicable):
every time at boot
Steps to Reproduce:
1. install ATI 9600 hardware and radeon driver
2. configure for one bigscreen (ATI speech for Xinerama) using attached xorg.conf
3. login using gnome
one big screen works during boot and gdm log in, switches to cloned mode during processing the loggin
stay in "one big screen mode" after log in
May be related to bug 442965 which seems to be the same for a nvidia graohics adapter
can you see if you have a ~/.gnome2/monitors.xml?
if so can you remove it?
There was a ~/.gnome2/monitors.xml
I removed it and everything works now as expected. Great!
I updated the system from FC7, where I used the same hardware and MergedFB (just in case it is interesting where monitors.xml may come from).
One minor hint:
DVI-1 is the default output which is used for Bios, Grub and during the first, non graphical boot. In (standard) gdm the lower panel (with the handicapped selector, language selector, etc) is on the DVI-1 (left in my case) whereas the login box is on DVI-0 (right in my case).
Previously with MergedFB all of them were on the default output, DVI-1.
In monitors.xml there was the following content:
This message is a reminder that Fedora 9 is nearing its end of life.
Approximately 30 (thirty) days from now Fedora will stop maintaining
and issuing updates for Fedora 9. It is Fedora's policy to close all
bug reports from releases that are no longer maintained. At that time
this bug will be closed as WONTFIX if it remains open with a Fedora
'version' of '9'.
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plan to fix it in a currently maintained version, simply change the 'version'
to a later Fedora version prior to Fedora 9's end of life.
Bug Reporter: Thank you for reporting this issue and we are sorry that
we may not be able to fix it before Fedora 9 is end of life. If you
would still like to see this bug fixed and are able to reproduce it
against a later version of Fedora please change the 'version' of this
bug to the applicable version. If you are unable to change the version,
please add a comment here and someone will do it for you.
Although we aim to fix as many bugs as possible during every release's
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The process we are following is described here:
Fixed. Cause of the problem was a left over from Fedora 7.