i915 "EDID checksum is invalid, remainder is 27" messages in dmesg

[Erik de Castro Lopo]

Graphics device is detected as an i915

    [ 9.002405] i915 0000:00:02.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
    [ 9.002413] i915 0000:00:02.0: setting latency timer to 64

X is working, but the dmesg output is being spammed with 52 messages like this:

    [ 9.137558] [drm:edid_is_valid] *ERROR* EDID checksum is invalid, remainder is 27
    [ 9.137629] [drm:edid_is_valid] *ERROR* Raw EDID:
    [ 9.137678] <3>00 ff ff ff ff ff ff 00 22 64 ea 03 f0 00 00 00 ........"d......
    [ 9.137681] <3>0d 0e 01 03 80 16 0d 78 0a 80 36 9a 5e 5d 91 28 .......x..6.^].(
    [ 9.137685] <3>20 4f 54 00 00 00 01 01 01 01 01 01 01 01 01 01 OT.............
    [ 9.137688] <3>01 01 01 01 01 01 94 11 00 b0 40 58 19 20 35 23 ..........@X. 5#
    [ 9.137691] <3>45 00 de 7d 00 00 00 19 00 00 00 fe 00 00 00 00 E..}............
    [ 9.137695] <3>00 00 00 00 00 00 00 00 00 00 00 00 00 fc 00 48 ...............H
    [ 9.137698] <3>53 44 31 30 31 50 46 57 33 44 0a 20 00 00 00 10 SD101PFW3D. ....
    [ 9.137701] <3>00 0a 20 20 20 20 20 20 20 20 20 20 20 20 00 19 .. ..
    [ 9.137704]

and then a final message like this:

    [ 102.725258] i915 0000:00:02.0: LVDS-1: EDID invalid.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-image-2.6.32-21-generic 2.6.32-21.32
Regression: No
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.32-21.32-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-21-generic i686
Architecture: i386
Date: Wed Jun 16 23:37:04 2010
ProcEnviron:
 LANG=en_US.utf8
 SHELL=/bin/bash
SourcePackage: linux

[Jeremy Foshee (jeremyfoshee)]

Hi Erik,

If you could also please test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

    [This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]

[Erik de Castro Lopo (erikd)]

Tested a 2.6.34 kernel.org kernel and that did not have a problem.

[Erik de Castro Lopo (erikd)]

If anyone still thinks this is incomplete, they need to tell me why.

[Wim Cools (wim-cools)]

I have the same problem with a HD monitor LG Flatron E2350V.
Jul 12 18:52:15 dikkepels kernel: [ 61.334986] [drm:edid_is_valid] *ERROR* EDID checksum is invalid, remainder is 130
JJul 12 18:52:15 dikkepels kernel: [ 61.334988] [drm:edid_is_valid] *ERROR* Raw EDID:
Jul 12 18:52:15 dikkepels kernel: [ 61.334990] <3>00 ff ff ff ff ff ff 00 ff ff ff ff ff ff ff ff ................
Jul 12 18:52:15 dikkepels kernel: [ 61.334992] <3>ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
Jul 12 18:52:15 dikkepels kernel: [ 61.334994] <3>ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
Jul 12 18:52:15 dikkepels kernel: [ 61.334996] <3>ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
Jul 12 18:52:15 dikkepels kernel: [ 61.334997] <3>ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
Jul 12 18:52:15 dikkepels kernel: [ 61.334999] <3>ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
Jul 12 18:52:15 dikkepels kernel: [ 61.335001] <3>ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
Jul 12 18:52:15 dikkepels kernel: [ 61.335003] <3>ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................