Comment 52 for bug 601376

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