[Bug 13173] xrandr size change kills second output

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=13173





--- Comment #11 from Alex Deucher <agd5f at yahoo.com>  2008-02-25 11:01:05 PST ---
The problem is with randr 1.0, there was no concept of crtcs or outputs, so the
"head" was whatever ended up being detected as connected (DVI, VGA, etc.). 
With randr 1.2 you have multiple crtc and outputs and one output and one crtc
get chosen as the "compat" output and crtc (which very well may be different
than what you got under randr 1.0 and the old driver).  Now, if you use the
xrandr 1.0 compatibility layer, it will change the mode on the compatibility
crtc and output even though you may have them routed differently using xrandr
1.2 commands; that particular crtc and output may not even be currently
associated.  I'm not sure why the randr compat stuff permanently breaks changes
via randr 1.2 though.

Does forcing the crtcs help when attempting to reset the modes using randr 1.2?
xrandr --output DVI-0 --crtc 1 --mode 1280x1024


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