Bug 466629 - gnome-display-properties multihead changes cause ATI problems
gnome-display-properties multihead changes cause ATI problems
Status: CLOSED CURRENTRELEASE
Product: Fedora
Classification: Fedora
Component: control-center (Show other bugs)
10
All Linux
medium Severity medium
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Assigned To: Søren Sandmann Pedersen
Fedora Extras Quality Assurance
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Depends On:
Blocks: F10DesktopTarget
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Reported: 2008-10-11 16:41 EDT by Gordon Messmer
Modified: 2014-06-18 05:10 EDT (History)
4 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Environment:
Last Closed: 2009-11-10 02:37:24 EST
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Regression: ---
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CRM:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:


Attachments (Terms of Use)
monitors.xml resulting from the working steps (915 bytes, text/plain)
2008-10-11 16:42 EDT, Gordon Messmer
no flags Details
xrandr output resulting from the workign steps (959 bytes, text/plain)
2008-10-11 16:42 EDT, Gordon Messmer
no flags Details
monitors.xml resulting from the first half of the non-working steps (915 bytes, text/plain)
2008-10-11 16:43 EDT, Gordon Messmer
no flags Details
xrandr output resulting from the first half of the non-working steps (959 bytes, application/octet-stream)
2008-10-11 16:43 EDT, Gordon Messmer
no flags Details
monitors.xml resulting from the final half of the non-working steps (915 bytes, text/plain)
2008-10-11 16:44 EDT, Gordon Messmer
no flags Details
xrandr output resulting from the final half of the non-working steps (959 bytes, text/plain)
2008-10-11 16:44 EDT, Gordon Messmer
no flags Details

  None (edit)
Description Gordon Messmer 2008-10-11 16:41:24 EDT
Description of problem:
This is a bit of a weird issue.  I'm using an ATI video card with dual outputs.  Certain use patterns of gnome-display-properties cause things to break.

First, I can produce the desired results by following these steps:
1. run gnome-display-properties
2. uncheck "Mirror Screens"
3. move the blue screen icon to the right and click Apply.

By following those steps, I move the DVI-0 output to the right, producing a wide multihead desktop.

However, if I don't know that I'm supposed to do that (perhaps because the outputs aren't labelled in g-d-p) I might follow these steps instead:
1. run gnome-display-properties
2. uncheck "Mirror Screens"
3. move the blue screen icon to the left and click Apply.
   - this makes the DVI-0 output the "left" desktop area.  
   - DVI-0 is now represented by a green icon instead of its 
     original blue, which is odd.
   - I actually wanted the DVI-0 output to be the right area of the desktop.
     I figure out that the left desktop area is on the right physical monitor,
     so I want to move the left monitor icon to the right, in order that it
     will display the right desktop area.
4. move the green icon (DVI-0, displaying the left desktop area) to the right
   of the blue icon.
   - this makes the DVI-0 the "right" monitor.  It is represented by the 
     a blue icon again.
   - both physical displays are mirrored, with the contents that should be on
     the DVI-0 output

Version-Release number of selected component (if applicable):
control-center-2.24.0.1-7.fc10.x86_64
xorg-x11-drv-ati-6.9.0-25.fc10.x86_64
xorg-x11-server-Xorg-1.5.2-2.fc10.x86_64


How reproducible:
Always

Actual results:
The physical displays are mirrored, even though they're configured to be a wide multihead desktop.
Comment 1 Gordon Messmer 2008-10-11 16:42:12 EDT
Created attachment 320114 [details]
monitors.xml resulting from the working steps
Comment 2 Gordon Messmer 2008-10-11 16:42:37 EDT
Created attachment 320115 [details]
xrandr output resulting from the workign steps
Comment 3 Gordon Messmer 2008-10-11 16:43:17 EDT
Created attachment 320116 [details]
monitors.xml resulting from the first half of the non-working steps
Comment 4 Gordon Messmer 2008-10-11 16:43:48 EDT
Created attachment 320117 [details]
xrandr output resulting from the first half of the non-working steps
Comment 5 Gordon Messmer 2008-10-11 16:44:14 EDT
Created attachment 320118 [details]
monitors.xml resulting from the final half of the non-working steps
Comment 6 Gordon Messmer 2008-10-11 16:44:35 EDT
Created attachment 320119 [details]
xrandr output resulting from the final half of the non-working steps
Comment 7 Bug Zapper 2008-11-25 22:47:31 EST
This bug appears to have been reported against 'rawhide' during the Fedora 10 development cycle.
Changing version to '10'.

More information and reason for this action is here:
http://fedoraproject.org/wiki/BugZappers/HouseKeeping

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