Jaunty contains xrandr 1.2.99.4 (see https://launchpad.net/ubuntu/jaunty/+source/x11-xserver-utils/7.4+1). Between 1.2.99.4 and 1.3.0 are only 4 commits. I bisected the problem and beb228842c77fab4a446e028dd501a01f0fb3fd3 (http://cgit.freedesktop.org/xorg/app/xrandr/commit/?id=beb228842c77fab4a446e028dd501a01f0fb3fd3) resolved the problem.
So the resolution is to update to xrandr 1.3.0 in sync with the xserver changes which revealed the problem in xrandr.
Jaunty contains xrandr 1.2.99.4 (see https:/ /launchpad. net/ubuntu/ jaunty/ +source/ x11-xserver- utils/7. 4+1). Between 1.2.99.4 and 1.3.0 are only 4 commits. I bisected the problem and beb228842c77fab 4a446e028dd501a 01f0fb3fd3 (http:// cgit.freedeskto p.org/xorg/ app/xrandr/ commit/ ?id=beb228842c7 7fab4a446e028dd 501a01f0fb3fd3) resolved the problem.
So the resolution is to update to xrandr 1.3.0 in sync with the xserver changes which revealed the problem in xrandr.