This might be fixed upstream in kernel 2.6.35-rc6. From the changelog: commit 15cb02c0a0338ee724bf23e31c7c410ecbffeeba Author: Alex Deucher Date: Wed Jul 21 19:37:21 2010 -0400
drm/radeon/kms: fix legacy LVDS dpms sequence Add delay after turning off the LVDS encoder. Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=16389 Tested-by: Jan Kreuzer Signed-off-by: Alex Deucher Cc: sta...@kernel.org Signed-off-by: Dave Airlie A PPA of this kernel is available at http://kernel.ubuntu.com/~kernel- ppa/mainline/ ** Bug watch added: Linux Kernel Bug Tracker #16389 http://bugzilla.kernel.org/show_bug.cgi?id=16389 -- (ATI Mobility Radeon X700) White screen on resolutions 1024x768 and lower while KMS is enabled https://bugs.launchpad.net/bugs/603861 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-ati in ubuntu. _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp