ubuntu-x-swat team mailing list archive

[Tim Holy <holy@xxxxxxxxx>]

Public bug reported:

This is a new problem with my upgrade to Kubuntu Karmic (this worked
fine in previous releases).

xrandr recognizes my external monitor, but when I try to activate it with
$ xrandr --auto
or
$ xrandr  --auto --output VGA-0  --mode 1280x1024
I get the following error:
 xrandr: cannot find crtc for output VGA-0
 
It clearly knows about the monitor:
$ xrandr                                                           
Screen 0: minimum 320 x 200, current 1400 x 1050, maximum 1600 x 1600                   
VGA-0 connected (normal left inverted right x axis y axis)                              
   1280x1024      60.0 +   75.0     60.0                                                
   1280x960       60.0                                                                  
   1152x864       75.0
   1024x768       75.0     70.1     60.0
   832x624        74.6
   800x600        72.2     75.0     60.3     56.2
   640x480        75.0     72.8     66.7     59.9
   720x400        70.1
LVDS connected 1400x1050+0+0 (normal left inverted right x axis y axis) 285mm x 214mm
   1400x1050      60.0*+   50.0
   1280x1024      59.9     60.0
   1280x960       59.9
   1280x854       59.9
   1280x800       59.8
   1280x720       59.9
   1152x768       59.8
   1024x768       60.0     59.9
   800x600        60.3     59.9
   640x480        59.9     59.4
DVI-0 disconnected (normal left inverted right x axis y axis)

Note that I was formerly connected to my monitor at work (the DVI-0 entry). I have tried doing this:
$ xrandr --output DVI-0 --off

It may also be worth noting that my work monitor has "high" resolution
(1600x1200), and I've noticed a number of flaky things about X in
handling that resolution (for example, I have to restart X to get full
resolution if I haven't started X with that monitor connected before).
In other words, it's possible that this won't be easily replicable
without the right combination of hardware.

My home monitor is a ViewSonic VP930b. I'm not at work right now, I
don't remember the model # of the work monitor (but can provide it if
needed).

ProblemType: Bug
Architecture: i386
Date: Fri Nov  6 04:40:45 2009
DistroRelease: Ubuntu 9.10
Package: libxrandr2 2:1.3.0-2
ProcEnviron:
 LANGUAGE=en
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
SourcePackage: libxrandr
Uname: Linux 2.6.31-14-generic i686

** Affects: libxrandr (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386

-- 
External monitor will not activate (cannot find crtc for output)
https://bugs.launchpad.net/bugs/476357
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