Xorg screen freezes with LVDS off

[jur]

I have begun to play around with my screens (EeePC 1000HE netbook with 1600x900 external monitor).

I have scripted one of the hot-keys to cycle through switching the combinations of monitors on and off.

However, at about the same time, and also just at the same time as starting to use tc-2.7, I am getting screen freezes. I would be busy doing anything, in X, and suddenly it freezes (the mouse cursor still moves). But no action at all. I can still exit X with ctl-alt-backspace, and restart X but it will freeze again after a little while, so it appears to be X that is the culprit.

I have not seen this before.

Is there any hint of xrandr in Xorg being a problem? (I still have to check if it freezes without using xrandr.)

[jur]

After more tests it seems the freezing problem arises when I have the netbook screen set to off. Within a very short time (less than a minute usually) it freezes, very repeatably. It does it with using xrandr but also when setting it to off via xorg.conf.

So it seems an Xorg bug, not xrandr.

[jur]

Tried with tc-2.6.1, same behaviour.