Bug#575832: /usr/bin/xrandr: xrandr: Configure crtc 1 invalid time

[Daniel Kahn Gillmor <dkg@fifthhorseman.net>]

Package: x11-xserver-utils
Version: 7.5+1+b1
Severity: normal
File: /usr/bin/xrandr

This is on an Asus EeePC 900, with the following video hardware:

00:02.0 VGA compatible controller: Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller (rev 04)
00:02.1 Display controller: Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller (rev 04)

It has a built-in 1024x600 screen.

I normally have a 1280x1024 external LCD monitor on the VGA port,
which i usually set up with:

  xrandr --output LVDS1 --mode 1024x600 --output VGA1 --mode 1280x1024 --above LVDS1

However, I was experimenting with panning, and now the above command
fails with the following message:

0 dkg@pip:~$ xrandr --output LVDS1 --mode 1024x600 --output VGA1 --mode 1280x1024 --above LVDS1
xrandr: Configure crtc 1 invalid time
1 dkg@pip:~$ 

To get it to work as expected, i need to explicitly turn panning off
and then try again:

0 dkg@pip:~$ xrandr --output LVDS1 --mode 1024x600 --panning 0x0 --output VGA1 --mode 1280x1024 --above LVDS1 
0 dkg@pip:~$ xrandr --output LVDS1 --mode 1024x600 --output VGA1 --mode 1280x1024 --above LVDS1
0 dkg@pip:~$ 

After the first command (with --panning 0x0), LVDS1 was still showing
as though it was --same-as VGA1.  I had to run the second command to
make the --above actually take effect.

So there is some weird persistent panning interaction going on.  and
at the very least, the error messages could be improved.

Regards,

   --dkg

-- System Information:
Debian Release: squeeze/sid
  APT prefers testing
  APT policy: (500, 'testing'), (200, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)

Kernel: Linux 2.6.32-4-686 (SMP w/1 CPU core)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages x11-xserver-utils depends on:
ii  cpp                           4:4.4.2-3  The GNU C preprocessor (cpp)
ii  libc6                         2.10.2-6   Embedded GNU C Library: Shared lib
ii  libice6                       2:1.0.6-1  X11 Inter-Client Exchange library
ii  libx11-6                      2:1.3.3-2  X11 client-side library
ii  libxau6                       1:1.0.5-2  X11 authorisation library
ii  libxaw7                       2:1.0.7-1  X11 Athena Widget library
ii  libxext6                      2:1.1.1-3  X11 miscellaneous extension librar
ii  libxi6                        2:1.3-4    X11 Input extension library
ii  libxmu6                       2:1.0.5-1  X11 miscellaneous utility library
ii  libxmuu1                      2:1.0.5-1  X11 miscellaneous micro-utility li
ii  libxrandr2                    2:1.3.0-3  X11 RandR extension library
ii  libxrender1                   1:0.9.5-2  X Rendering Extension client libra
ii  libxt6                        1:1.0.7-1  X11 toolkit intrinsics library
ii  libxxf86vm1                   1:1.1.0-2  X11 XFree86 video mode extension l
ii  x11-common                    1:7.5+3    X Window System (X.Org) infrastruc

x11-xserver-utils recommends no packages.

Versions of packages x11-xserver-utils suggests:
pn  cairo-5c                      <none>     (no description available)
pn  nickle                        <none>     (no description available)
ii  xorg-docs-core                1:1.5-1    Core documentation for the X.org X

-- no debconf information