I recently performed an upgrade of my Debian Squeeze server to include the upgrades available in squeeze-backports. After the upgrade, I noticed a lot of dmesg's like the below. In fact, they were repeating every 10 seconds. The cause was simple: the ancient monitor I had plugged into the server. It was an HP monochrome monitor from probably the early 90s.
Since there were other non-backport packages that got upgraded, I don't know which "set" of upgrades caused this, but the fix was simple: unplug the monitor! After Googling the error and not finding any suggestions, I thought I'd write this quick post for anyone else running into it.
[ 837.510594] Raw EDID:
[ 837.511026] 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 837.511446] 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 837.511864] 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 837.512299] 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 837.512720] 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 837.513138] 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 837.513544] 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 837.513935] 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 837.514312] nouveau 0000:02:00.0: VGA-1: EDID block 0 invalid.
[ 837.514320] [drm] nouveau 0000:02:00.0: DDC responded, but no EDID for VGA-1
[ 847.622594] Raw EDID:
[ 847.623013] 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 847.623432] 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 847.623851] 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 847.624286] 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 847.624704] 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 847.625121] 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 847.625527] 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 847.625916] 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 847.626294] nouveau 0000:02:00.0: VGA-1: EDID block 0 invalid.
[ 847.626304] [drm] nouveau 0000:02:00.0: DDC responded, but no EDID for VGA-1
