[Bug 72648] All 3 monitor EDIDs show the same
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Fri Dec 13 10:12:29 PST 2013
https://bugs.freedesktop.org/show_bug.cgi?id=72648
--- Comment #8 from jim.cromie at gmail.com ---
(In reply to comment #4)
> According to your log, all the EDIDs are correct. It looks like the drm
> sysfs layer incorrectly reports the same edid for connectors via sysfs, but
> the driver has the correct information.
yes, 3 different monitors are identified:
[jimc at groucho bootlogs]$ grep Manufacturer /var/log/Xorg.0.log
[ 30.170] (II) RADEON(0): Manufacturer: DEL Model: a039 Serial#: 876102485
[ 30.171] (II) RADEON(0): Manufacturer's mask: 0
[ 30.205] (II) RADEON(0): Manufacturer: ACR Model: ad99 Serial#:
1914720286
[ 30.206] (II) RADEON(0): Manufacturer's mask: 0
[ 30.269] (II) RADEON(0): Manufacturer: LNX Model: 0 Serial#: 0
[ 30.269] (II) RADEON(0): Manufacturer's mask: 0
fwiw, the last one is an AOC E2252S monitor,
I guess "LNX" is a placeholder/default due to the Raw EDID errors,
happening since I plugged in the AOC.
[ 2.362551] [drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid,
remainder is 153
[ 2.362594] Raw EDID:
[ 2.362601] 00 ff ff ff ff ff ff 00 05 e3 52 22 db 06 00 00
[ 2.362623] 1b 17 01 03 68 30 1b 78 2a ee d1 a5 55 48 37 ff
[ 2.362644] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 2.362666] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 2.362687] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 2.362709] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 2.362731] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 2.362752] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
Those remainder errors appear to be random, varying between the 2 boots
of the rc3-00174 kernel that I recorded (and the others too)
[jimc at groucho bootlogs]$ grep remainder 3.13.0-rc3-x2a-00174-g9538e10-*/dmesg |
sort -t: -k2
3.13.0-rc3-x2a-00174-g9538e10-2ndboot/dmesg: [drm:drm_edid_block_valid] *ERROR*
EDID checksum is invalid, remainder is 119
3.13.0-rc3-x2a-00174-g9538e10-2ndboot/dmesg: [drm:drm_edid_block_valid] *ERROR*
EDID checksum is invalid, remainder is 128
3.13.0-rc3-x2a-00174-g9538e10-2ndboot/dmesg: [drm:drm_edid_block_valid] *ERROR*
EDID checksum is invalid, remainder is 130
3.13.0-rc3-x2a-00174-g9538e10-1stboot/dmesg: [drm:drm_edid_block_valid] *ERROR*
EDID checksum is invalid, remainder is 200
3.13.0-rc3-x2a-00174-g9538e10-1stboot/dmesg: [drm:drm_edid_block_valid] *ERROR*
EDID checksum is invalid, remainder is 241
3.13.0-rc3-x2a-00174-g9538e10-2ndboot/dmesg: [drm:drm_edid_block_valid] *ERROR*
EDID checksum is invalid, remainder is 243
3.13.0-rc3-x2a-00174-g9538e10-1stboot/dmesg: [drm:drm_edid_block_valid] *ERROR*
EDID checksum is invalid, remainder is 244
3.13.0-rc3-x2a-00174-g9538e10-1stboot/dmesg: [drm:drm_edid_block_valid] *ERROR*
EDID checksum is invalid, remainder is 251
3.13.0-rc3-x2a-00174-g9538e10-1stboot/dmesg: [drm:drm_edid_block_valid] *ERROR*
EDID checksum is invalid, remainder is 87
So I agree that sysfs is somehow to blame for the original worry.
I guess I'll post over on LKML, and refer back to this bug-rpt.
After testing if the EDID cmdline addition might be involved.
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