A kernel update to 2.6.38 did not help. There is a problem with my mainboard (Asus M2A-VM). There is no HDMI monitor connected but the kernel still tries to read the EDID. For more info see https://bugzilla.redhat.com/show_bug.cgi?id=668196 and http://ubuntuforums.org/showthread.php?t=1607778
I found three possible solutions to solve my problem: 1) put this kernel parameter into my grub.cfg "radeon.modeset=0" Unfortunately, the X server will the segfault after some time 2) get the kernel source and patch the radeon driver, see http://ubuntuforums.org/showthread.php?t=1607778 this works, but you have to patch the kernel after every update again 3) execute the command "echo -n N > /sys/module/drm_kms_helper/parameters/poll" This will effectively stop the pollution of the dmesg (and all the quirky X behavior). This option does not exist in kernel 2.6.35 that's why I had update to kernel 2.6.38 ** Bug watch added: Red Hat Bugzilla #668196 https://bugzilla.redhat.com/show_bug.cgi?id=668196 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/601376 Title: 2.6.35-6.9 (and newer) kernels having issues with invalid EDID info and ATI Radeon graphics -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
