Bug#611619:

[Daniel Manjarres <manjarrs@illinois.edu>]

Hi, I am hit by this bug too, since I upgraded to Debian 6.0.

gnome-display-properties is able to rotate the display to normal 
inverted left or right via gnome-settings-daemon, but grandr, xrandr and 
nvidia-settings are only able to rotate to normal or inverted. Trying to 
rotate to left or right crashes nvidia-settings, and gets and error from 
grandr/xrandr.


xrandr -o right
X Error of failed request:  BadValue (integer parameter out of range for 
operation)
  Major opcode of failed request:  152 (RANDR)
  Minor opcode of failed request:  2 (RRSetScreenConfig)
  Value in failed request:  0xa00
  Serial number of failed request:  14
  Current serial number in output stream:  14


grandr
user set screen height 2560, larger than max height 1600, set to max height


Running xrandr from within a chroot with an older debian release also 
fails the same way.

Seems to me to be a bug in the x server.

HTH