[Bug 23071] New: Wrong EDID for external monitor with KMS

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=23071

           Summary: Wrong EDID for external monitor with KMS
           Product: xorg
           Version: 7.4
          Platform: x86-64 (AMD64)
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: mikko.cal at gmail.com
         QAContact: xorg-team at lists.x.org


Setup:
- X1400 Mobility
- Laptop monitor 1280x800
- External Monitor/TV Samsung 2333HD 1920x1080, VGA

Enabled KMS:
- If I start X with the external monitor plugged in, the internal monitor has a
wrong resolution, I think 1920x1080 because I can only see the top left part.
- If I start X without external monitor, and then plug it in, both monitor have
the right resolution.

Disabled KMS:
All is fine.

Kernel 2.6.31-rc5, xf86-video-ati master, mesa master, libdrm master.


I get this in dmesg with KMS enabled + external monitor plugged:

[drm:edid_is_valid] *ERROR* EDID checksum is invalid, remainder is 143
[drm:edid_is_valid] *ERROR* Raw EDID:
<3>00 ff ff ff ff ff ff 00 4c 2d 84 04 33 32 4d 43  ........L-..32MC
<3>1a 12 01 03 0e 34 20 78 2a ee 91 a3 54 4c 99 26  .....4 x*...TL.&
<3>0f 50 54 bf ef 01 ff ff ff ff ff ff ff ff ff ff  .PT.............
<3>ff ff ff ff ff ff ff ff 80 00 ff ff ff ff ff ff  ................
<3>ff ff ff ff ff ff ff ff f0 3f ff ff ff ff ff ff  .........?......
<3>ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  ................
<3>ff ff fe 87 1c 7f ff ff ff ff ff ff ff ff ff ff  ................
<3>ff ff fe 07 ff ff ff ff ff ff ff ff ff 03 ff ff  ................

radeon 0000:01:00.0: VGA-1: EDID invalid.
[drm:edid_is_valid] *ERROR* EDID checksum is invalid, remainder is 212
[drm:edid_is_valid] *ERROR* Raw EDID:
<3>00 ff ff ff ff ff ff 00 4c 01 84 04 33 32 4d 43  ........L...32MC
<3>1a 12 01 03 0e 34 20 78 2a ee 91 a3 54 4c 99 26  .....4 x*...TL.&
<3>0f 50 54 bf ef 80 71 4f 81 00 81 40 81 80 95 00  .PT...qO... at ....
<3>a9 40 b3 00 01 01 1a 36 80 a0 70 38 1f 40 30 20  . at .....6..p8.@0 
<3>35 00 06 20 20 00 00 1a 00 00 00 fd 00 38 4b 1e  5..  ........8K.
<3>51 11 00 0a 20 20 20 20 20 20 00 00 00 fc 00 53  Q...      .....S
<3>79 6e 63 4d 61 73 74 65 72 0a 20 20 00 00 00 ff  yncMaster.  ....
<3>00 48 31 41 4b 35 30 30 30 30 30 0a 20 20 00 5c  .H1AK500000.  .\

radeon 0000:01:00.0: VGA-1: EDID invalid.
integrated sync not supported
integrated sync not supported
Unpin not necessary for ffff88007b0766e0 !


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