ubuntu-x-swat team mailing list archive

[Bryce Harrington <bryce@xxxxxxxxxxxxxxxxxxx>]

Okay yeah... so what's going on there is that your hardware has a
rendering buffer unit which supports textures up to a certain maximum
size, which in the case of the GMA950 is only 2048x2048.  Compiz renders
the entire desktop as a single texture, so the max texture size is a
limitation that affects dual-head cases.

A workaround is instead of putting the monitors side-by-side to make
them one-above-the-other.

This won't be fixed at the distro level or in compiz (it's a hardware
limitation), so I'm marking this wontfix.  The solution will ultimately
come when X.org upstream brings back Xinerama-mode so that you can have
multiple screens each smaller than the max texture size, but stitched
together in a way that allows multi-screen desktop layouts.

For more info see:
http://wiki.compiz.org/FAQ#Root_window_is_larger_than_maximum_texture_size

** Summary changed:

- cannot set resolution on secondary display above 823x624
+ MASTER: max texture size prevents compiz from running

** Package changed: xserver-xorg-video-intel (Ubuntu) => xorg-server
(Ubuntu)

** Changed in: xorg-server (Ubuntu)
   Importance: Undecided => Wishlist

** Changed in: xorg-server (Ubuntu)
       Status: Incomplete => Triaged

-- 
MASTER: max texture size prevents compiz from running
https://bugs.launchpad.net/bugs/555641
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