Stefan, The new issue is caused by Intel driver change to map the GTT aperture (bottom half of BAR 1) as WC, while the top half of BAR1 is still Un- Cacheable. Then the conflict happens when fglrx driver maps the whole BAR1 of Intel IGP device. We have already prepared a fix for this, which should be available in Catalyst 13.3. As a workaround before that, I think you can do some change in Intel graphics driver to map GTT aperture as Un-Cacheable.
Some more information about this for the Intel driver change can be found at https://bugs.freedesktop.org/show_bug.cgi?id=55834 and https://patchwork.kernel.org/patch/1309531/ -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to the bug report. https://bugs.launchpad.net/bugs/1068404 Title: Low graphics mode in muxless hybrid ATI/Intel GPU systems after fglrx upgrade To manage notifications about this bug go to: https://bugs.launchpad.net/xserver-xorg-video-intel/+bug/1068404/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
