I'm an end user that is affected by this on my HD 4570 :( At the moment I'm running in SOFTWARE mode because this open source driver doesn't work for me, and ATI's binary legacy driver is incompatible with the version of Xorg in ubuntu stable.
What can I do to help sort this out? -- 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
