Seems to be fixed for me. Installed from the ppa and worked out-of-box without the patch.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-ati in Ubuntu. https://bugs.launchpad.net/bugs/1195425 Title: Corrupted screen using radeon drivers Status in Mir: Triaged Status in “xserver-xorg-video-ati” package in Ubuntu: Triaged Bug description: So, here's what I've done: Step 0. Aquire a Toshiba Satellite C-660 noebook with (non-switchable, 512MB) Radeon HD5470M graphics and intel P6200 cpu. Step 1. Do a fresh install using a 64bit saucy daily iso and a USB pendrive. Step 2. sudo apt-get update && sudo apt-get dist-upgrade Step 3. Follow the guide step by step to install Mir http://www.olli-ries.com/running-mir/ Step 4. sudo restart lightdm This produced a black screen with a blinking cursor in the top left corner and an X shaped mouse cursor. Step 5. ctrl-alt-F2, login, sudo shutdown -r now Steo 6. let the system reboot itself This produced a corrupted screen, which reacts (flickers) to mouse movement, with ubuntu running fine in the background. Step 7. ctrl-alt-F2, login, check every possible log in /var/log/ (boot.log, dmesg, Xorg.0.log, etc..), everything looks fine and dandy, no apparent errors. At this point the following message kept spamming randomly accross all virtual terminals: [drm:radeon_cs_ib_chunk] *ERROR* Invalid command stream ! Step 8. Write down error message Step 9. Reboot to recovery. Step 10. Report bug launchpad. Step 11. (optional) Revert to X using ppa-purge To manage notifications about this bug go to: https://bugs.launchpad.net/mir/+bug/1195425/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
