From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org
Subject: [Bug 15753] New: [Dualhead, randr12]
Date: Tue, 29 Apr 2008 03:45:44 -0700 (PDT)
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Sender: nouveau-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
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List-Id: nouveau.vger.kernel.org
http://bugs.freedesktop.org/show_bug.cgi?id=15753
Summary: [Dualhead, randr12]
Product: xorg
Version: unspecified
Platform: Other
OS/Version: All
Status: NEW
Severity: normal
Priority: medium
Component: Driver/nouveau
AssignedTo: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
ReportedBy: xake-ca8b1Tj3MiseIZ0/mPfg9Q@public.gmane.org
QAContact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org
My system have two monitors connected to my system.
My xorg.conf starts VGA-0 to the left of DVI-A-0.
Both starts at resolution 1280x1024 by default (not changed by me).
VGA-0 is capable of running the resolution 1600x1200, but here comes the
problem:
xake@lillen ~ $ xrandr --output VGA-0 --mode 1600x1200
xake@lillen ~ $ xrandr
Screen 0: minimum 320 x 200, current 2560 x 1200, maximum 3000 x 3000
VGA-0 connected 1600x1200+0+0 (normal left inverted right x axis y axis) 352mm
x 264mm
1280x1024 85.0 + 84.8 75.0
1600x1200 75.0*
1152x864 75.0
1024x768 100.0 84.9 75.1 70.1 60.0 43.5
832x624 74.6
800x600 84.9 72.2 75.0 60.3 56.2
640x480 84.6 75.0 72.8 66.7 60.0
720x400 87.8 70.1
DVI-A-0 connected 1280x1024+1280+0 (normal left inverted right x axis y axis)
306mm x 230mm
1280x1024 60.1*
1024x768 75.1 70.1 60.0 43.5
832x624 74.6
800x600 72.2 75.0 60.3 56.2
640x480 75.0 72.8 66.7 60.0 59.9
720x400 87.8 70.1
512x384 120.0
400x300 120.6
320x240 120.1
DVI-D-0 disconnected (normal left inverted right x axis y axis)
As you can see in this output the "current" for "Screen 0" is less then the
width of VGA-0 and DVI-A-0 making a part of the left screen also appere on the
right.
However if I do:
xake@lillen ~ $ xrandr
Screen 0: minimum 320 x 200, current 2560 x 1200, maximum 3000 x 3000
VGA-0 connected 1600x1200+0+0 (normal left inverted right x axis y axis) 352mm
x 264mm
1280x1024 85.0 + 84.8 75.0
1600x1200 75.0*
1152x864 75.0
1024x768 100.0 84.9 75.1 70.1 60.0 43.5
832x624 74.6
800x600 84.9 72.2 75.0 60.3 56.2
640x480 84.6 75.0 72.8 66.7 60.0
720x400 87.8 70.1
DVI-A-0 connected 1280x1024+1280+0 (normal left inverted right x axis y axis)
306mm x 230mm
1280x1024 60.1*
1024x768 75.1 70.1 60.0 43.5
832x624 74.6
800x600 72.2 75.0 60.3 56.2
640x480 75.0 72.8 66.7 60.0 59.9
720x400 87.8 70.1
512x384 120.0
400x300 120.6
320x240 120.1
DVI-D-0 disconnected (normal left inverted right x axis y axis)
xake@lillen ~ $ xrandr --output DVI-A-0 --off
xake@lillen ~ $ xrandr --output DVI-A-0 --auto
xake@lillen ~ $ xrandr --output DVI-A-0 --right-of VGA-0
xake@lillen ~ $ xrandr --output DVI-A-0 --mode 1280x1024
xake@lillen ~ $ xrandr
Screen 0: minimum 320 x 200, current 2880 x 1200, maximum 3000 x 3000
VGA-0 connected 1600x1200+0+0 (normal left inverted right x axis y axis) 352mm
x 264mm
1280x1024 85.0 + 84.8 75.0
1600x1200 75.0*
1152x864 75.0
1024x768 100.0 84.9 75.1 70.1 60.0 43.5
832x624 74.6
800x600 84.9 72.2 75.0 60.3 56.2
640x480 84.6 75.0 72.8 66.7 60.0
720x400 87.8 70.1
DVI-A-0 connected 1280x1024+1600+0 (normal left inverted right x axis y axis)
306mm x 230mm
1280x1024 60.1*
1024x768 75.1 70.1 60.0 43.5
832x624 74.6
800x600 72.2 75.0 60.3 56.2
640x480 75.0 72.8 66.7 60.0 59.9
720x400 87.8 70.1
512x384 120.0
400x300 120.6
320x240 120.1
DVI-D-0 disconnected (normal left inverted right x axis y axis)
Then as you can see everything works nice.
So it seems changing the resolution the output of VGA-0 (theleft screen) does
not setup a correct screen size, but with xrandr turn off DVI-A-0 and restore
its setup again both monitors seems to work nice.
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