Monday, June 11, 2012

EDID errors after Debian Squeeze upgrade


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