dual monitor setup fails (xrandr: Failed to get size of gamma for output default; warning: output LVDS not found; ignoring; warning: output VGA not found; ignoring)

Hi,

Since a couple of weeks my dual monitor setup fails:

# xrandr --output LVDS --output VGA --right-of LVDS --primary

xrandr: Failed to get size of gamma for output default
warning: output LVDS not found; ignoring
warning: output VGA not found; ignoring

xrand without parameters produces the following output:

# xrandr

xrandr: Failed to get size of gamma for output default
Screen 0: minimum 640 x 480, current 1280 x 1024, maximum 1280 x 1024
default connected 1280x1024+0+0 0mm x 0mm
1280x1024 0.0*
1024x768 0.0
800x600 0.0
640x480 0.0

What can I do?

Thanks, Dietrich

---
I use debian sid on an IBM X60s laptop

# lspci -nn | grep VGA

00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile
945GM/GMS, 943/940GML Express Integrated Graphics Controller [8086:27a2]
(rev 03)

I erased the /etc/X11/xorg.conf as x windows didn't start anymore and
this was the only way I found to make it start again and get back to
work. Trying after to reconfigure xserver-xorg with
dpkg-reconfigure xserver-xorg
didn't recreate /etc/X11/xorg.conf. Could this be related?




--
To UNSUBSCRIBE, email to debian-user-REQUEST@xxxxxxxxxxxxxxxx
with a subject of "unsubscribe". Trouble? Contact listmaster@xxxxxxxxxxxxxxxx
Archive: http://lists.debian.org/1292648785.10966.37.camel@xxxxxxxxxxx

Relevant Pages

  • Re: dual monitor setup fails (xrandr: Failed to get size of gamma for output default; warning: outp
    ... xrandr: Failed to get size of gamma for output default warning: ... You can also run "xrandr -q" to discover what is ... Can you give me a hint for what I should search for in the xorg log? ...
    (Debian-User)
  • Display Resolution
    ... I have not received a reply there, so I figured I'd give this list a shot, especially since this is probably not XFCE related. ... I have resolved similar issues in the past by using cvt and xrandr, ... Failed to get size of gamma for output default ... To UNSUBSCRIBE, email to debian-user-REQUEST@xxxxxxxxxxxxxxxx ...
    (Debian-User)
  • Re: screen resolution
    ... option when I run xrandr --mode I get a response that the option does ... previous version of xrandr. ... I got the error message: ... Failed to get the size of gamma for output default. ...
    (Fedora)