Created attachment 35058 [details] Xorg.0.log Already filed a bug here: http://bugs.archlinux.org/task/19095 I'm using Arch Linux and had problems with screen artefacts in KDE (and only KDE) when using my xorg.conf file. Without it, the artefacts are gone. Additionally KMS does not work for me. With KMS on "early start" (radeon driver build into kernel), the system hangs after/during loading modules. radeon build into the kernel and using radeon.modeset=0 results in disabled direct rendering (software rendering) Using the "late start" of KMS (radeon not build into kernel) the system boots all right, but it has a black screen after loading the modules (also in X). What can I provide to help resolve this bug?
Created attachment 35059 [details] [review] dmesg (late start with KMS)
Created attachment 35070 [details] lspci -vvv
Is this still an issue with newer kernels?
The artefacts in KDE are gone with xorg-server 1.9.0. But I'm not using xorg.conf anymore (now: config files in etc/X11/xorg.conf.d/*) Also, KMS with "late start" works perfectly. The only persistent problem: When using "early start" the system starts all right (everything is visible), only it just uses software rendering instead of hardware rendering.
Opened a new bug for the remaining late start issue: https://bugs.freedesktop.org//show_bug.cgi?id=34192 Feel free to close this bug!
If you build radeon into your kernel, you need to build the firmware into the kernel as well or you will get delays in boot while the kernel searched for the firmware and no accel due to the lack of firmware.
Resolving per comment #5.
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