With 2.6.25 and 2.6.26 kernels with KMS enabled i get completely blank screen after booting, the monitor turns off because there is no signal, and i can switch to a VT. i can however SSH in to the machine. also it boots fine with radeon.modeset=0
with previous kernels the monitor works fine, correct resolution is always detected.
i have 08:00.0 VGA compatible controller: ATI Technologies Inc Mobility Radeon HD 3600 Series and anEIZO S2242W monitor
i see lots of messages like: radeon 0000:08:00.0: DVI-I-1: EDID block 1 invalid. [drm:radeon_dvi_detect] *ERROR* DVI-I-1: probed a monitor but no|invalid EDID [drm:drm_edid_block_valid] *ERROR* Raw EDID: <3>00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ <3>00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ <3>00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ <3>00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ <3>00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ <3>00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ <3>00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ <3>00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ in dmesg.
i have reportedhttps://bugs.launchpad.net/ubuntu/+source/linux/+bug/601376 which has some more debug info
a search leads me to a thread [PATCH 1/2] drm/edid: Make EDID header fixup threshold configurable http://thread.gmane.org/gmane.comp.video.dri.devel/45591 but i can't see if that patch has been merged, or if there is any follow up.
is there any news on this issue?
thanks
Sam