Public bug reported:
Binary package hint: x11-xserver-utils
I reinstalled a system previously running 10.04 with 10.10, and went
about configuring for panning in the usual way as of xrandr:
/etc/X11/xorg.conf added:
Section "Screen"
Identifier "Screen0"
Device "Card0"
Monitor "Monitor0"
SubSection "Display"
Viewport 0 0
Virtual 3200 2400
Depth 24
EndSubSection
EndSection
Then, I run:
# xrandr --output DVI-0 --panning 3200x2400
and I get:
xrandr: cannot find output 0x47
Forgetting about panning for a moment:
# xrandr --output DVI-0
xrandr: cannot find output 0x47
I've enclosed the output of xrandr --verbose, but what I think is the
relevant line is:
DVI-0 connected 1600x1200+0+0 (0x49) normal (normal left inverted right x axis
y axis) 367mm x 275mm
Identifier: 0x46
So basically, for some reason, the DVI-0 connection's identifier is
0x46, but xrandr wants to use 0x47.
For everything, it appears:
# xrandr --output VGA-0
xrandr: cannot find output 0x47
My video card is a Radeon 5750, so it's a R800.
apt-cache policy as requested in the bug reporting guidelines didn't
seem to work. I'm up-to-date as of today (10/27/10).
This worked fine with exactly these configuration steps in 10.04, and if
memory serves in 9.10.
** Affects: x11-xserver-utils (Ubuntu)
Importance: Undecided
Status: New
--
xrandr fails to find (any) output on r800
https://bugs.launchpad.net/bugs/667546
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