[Bug 42112] New: radeon driver (kms) fails to read EDID data from external LCD monitor with kernel 3.0.4 on a RV350 chip

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From: bugzilla-daemon@bugzilla.kernel.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 42112] New: radeon driver (kms) fails to read EDID data from external LCD monitor with kernel 3.0.4 on a RV350 chip
Date: Tue, 30 Aug 2011 19:09:43 GMT	[thread overview]
Message-ID: <bug-42112-2300@https.bugzilla.kernel.org/> (raw)

https://bugzilla.kernel.org/show_bug.cgi?id=42112

           Summary: radeon driver (kms) fails to read EDID data from
                    external LCD monitor with kernel 3.0.4 on a RV350 chip
           Product: Drivers
           Version: 2.5
    Kernel Version: 3.0.4
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
        AssignedTo: drivers_video-dri@kernel-bugs.osdl.org
        ReportedBy: mrsteven@gmx.de
        Regression: Yes


Created an attachment (id=70922)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=70922)
Output of lspci -vv

Hello,

today I updated from kernel 3.0.3 to 3.0.4. Now when I plug an external LCD
monitor into the VGA output of my notebook, the radeon driver fails to read the
EDID data from the monitor, leading to a resolution of 1024x768 instead of
1280x1024 on it. With kernel 3.0.3 everything worked fine.

Now when I execute the following command in an X session
  xrandr --output VGA-0 --auto
my dmesg output shows these lines:

[drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainder is 238
Raw EDID:
<3>00 ff ff ff ff ff ff 00 26 34 75 01 ec 37 00 00  ........&4u..7..
<3>12 0f 01 03 08 21 1b 78 e8 c5 c6 a3 57 4a 9c 23  .....!.x....WJ.#
<3>00 4f 54 a7 ef 80 81 80 01 01 01 01 01 01 01 01  .OT.............
<3>01 01 01 01 01 01 30 2a 00 98 51 00 2a 40 30 70  ......0*..Q.*@0p
<3>13 00 4a 0e 11 00 00 1e 10 0b d0 b4 20 90 31 10  ..J......... .1.
<3>12 6c d2 00 4a 0e 11 00 00 1c d5 09 80 a0 20 e0  .l..J......... .
<3>2d 10 10 60 a2 00 4a 0e 11 00 00 18 00 00 00 fc  -..`..J.........
<3>00 4c 31 37 54 0a 20 20 20 20 20 20 20 20 00 ba  .L17T.        ..

[drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainder is 238
Raw EDID:
<3>00 ff ff ff ff ff ff 00 26 34 75 01 ec 37 00 00  ........&4u..7..
<3>12 0f 01 03 08 21 1b 78 e8 c5 c6 a3 57 4a 9c 23  .....!.x....WJ.#
<3>00 4f 54 a7 ef 80 81 80 01 01 01 01 01 01 01 01  .OT.............
<3>01 01 01 01 01 01 30 2a 00 98 51 00 2a 40 30 70  ......0*..Q.*@0p
<3>13 00 4a 0e 11 00 00 1e 10 0b d0 b4 20 90 31 10  ..J......... .1.
<3>12 6c d2 00 4a 0e 11 00 00 1c d5 09 80 a0 20 e0  .l..J......... .
<3>2d 10 10 60 a2 00 4a 0e 11 00 00 18 00 00 00 fc  -..`..J.........
<3>00 4c 31 37 54 0a 20 20 20 20 20 20 20 20 00 ba  .L17T.        ..

[drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainder is 238
Raw EDID:
<3>00 ff ff ff ff ff ff 00 26 34 75 01 ec 37 00 00  ........&4u..7..
<3>12 0f 01 03 08 21 1b 78 e8 c5 c6 a3 57 4a 9c 23  .....!.x....WJ.#
<3>00 4f 54 a7 ef 80 81 80 01 01 01 01 01 01 01 01  .OT.............
<3>01 01 01 01 01 01 30 2a 00 98 51 00 2a 40 30 70  ......0*..Q.*@0p
<3>13 00 4a 0e 11 00 00 1e 10 0b d0 b4 20 90 31 10  ..J......... .1.
<3>12 6c d2 00 4a 0e 11 00 00 1c d5 09 80 a0 20 e0  .l..J......... .
<3>2d 10 10 60 a2 00 4a 0e 11 00 00 18 00 00 00 fc  -..`..J.........
<3>00 4c 31 37 54 0a 20 20 20 20 20 20 20 20 00 ba  .L17T.        ..

[drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainder is 238
Raw EDID:
<3>00 ff ff ff ff ff ff 00 26 34 75 01 ec 37 00 00  ........&4u..7..
<3>12 0f 01 03 08 21 1b 78 e8 c5 c6 a3 57 4a 9c 23  .....!.x....WJ.#
<3>00 4f 54 a7 ef 80 81 80 01 01 01 01 01 01 01 01  .OT.............
<3>01 01 01 01 01 01 30 2a 00 98 51 00 2a 40 30 70  ......0*..Q.*@0p
<3>13 00 4a 0e 11 00 00 1e 10 0b d0 b4 20 90 31 10  ..J......... .1.
<3>12 6c d2 00 4a 0e 11 00 00 1c d5 09 80 a0 20 e0  .l..J......... .
<3>2d 10 10 60 a2 00 4a 0e 11 00 00 18 00 00 00 fc  -..`..J.........
<3>00 4c 31 37 54 0a 20 20 20 20 20 20 20 20 00 ba  .L17T.        ..

radeon 0000:01:00.0: VGA-1: EDID block 0 invalid.
[drm:radeon_vga_detect] *ERROR* VGA-1: probed a monitor but no|invalid EDID
[drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainder is 238
Raw EDID:
<3>00 ff ff ff ff ff ff 00 26 34 75 01 ec 37 00 00  ........&4u..7..
<3>12 0f 01 03 08 21 1b 78 e8 c5 c6 a3 57 4a 9c 23  .....!.x....WJ.#
<3>00 4f 54 a7 ef 80 81 80 01 01 01 01 01 01 01 01  .OT.............
<3>01 01 01 01 01 01 30 2a 00 98 51 00 2a 40 30 70  ......0*..Q.*@0p
<3>13 00 4a 0e 11 00 00 1e 10 0b d0 b4 20 90 31 10  ..J......... .1.
<3>12 6c d2 00 4a 0e 11 00 00 1c d5 09 80 a0 20 e0  .l..J......... .
<3>2d 10 10 60 a2 00 4a 0e 11 00 00 18 00 00 00 fc  -..`..J.........
<3>00 4c 31 37 54 0a 20 20 20 20 20 20 20 20 00 ba  .L17T.        ..

[drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainder is 238
Raw EDID:
<3>00 ff ff ff ff ff ff 00 26 34 75 01 ec 37 00 00  ........&4u..7..
<3>12 0f 01 03 08 21 1b 78 e8 c5 c6 a3 57 4a 9c 23  .....!.x....WJ.#
<3>00 4f 54 a7 ef 80 81 80 01 01 01 01 01 01 01 01  .OT.............
<3>01 01 01 01 01 01 30 2a 00 98 51 00 2a 40 30 70  ......0*..Q.*@0p
<3>13 00 4a 0e 11 00 00 1e 10 0b d0 b4 20 90 31 10  ..J......... .1.
<3>12 6c d2 00 4a 0e 11 00 00 1c d5 09 80 a0 20 e0  .l..J......... .
<3>2d 10 10 60 a2 00 4a 0e 11 00 00 18 00 00 00 fc  -..`..J.........
<3>00 4c 31 37 54 0a 20 20 20 20 20 20 20 20 00 ba  .L17T.        ..

[drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainder is 238
Raw EDID:
<3>00 ff ff ff ff ff ff 00 26 34 75 01 ec 37 00 00  ........&4u..7..
<3>12 0f 01 03 08 21 1b 78 e8 c5 c6 a3 57 4a 9c 23  .....!.x....WJ.#
<3>00 4f 54 a7 ef 80 81 80 01 01 01 01 01 01 01 01  .OT.............
<3>01 01 01 01 01 01 30 2a 00 98 51 00 2a 40 30 70  ......0*..Q.*@0p
<3>13 00 4a 0e 11 00 00 1e 10 0b d0 b4 20 90 31 10  ..J......... .1.
<3>12 6c d2 00 4a 0e 11 00 00 1c d5 09 80 a0 20 e0  .l..J......... .
<3>2d 10 10 60 a2 00 4a 0e 11 00 00 18 00 00 00 fc  -..`..J.........
<3>00 4c 31 37 54 0a 20 20 20 20 20 20 20 20 00 ba  .L17T.        ..

[drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainder is 238
Raw EDID:
<3>00 ff ff ff ff ff ff 00 26 34 75 01 ec 37 00 00  ........&4u..7..
<3>12 0f 01 03 08 21 1b 78 e8 c5 c6 a3 57 4a 9c 23  .....!.x....WJ.#
<3>00 4f 54 a7 ef 80 81 80 01 01 01 01 01 01 01 01  .OT.............
<3>01 01 01 01 01 01 30 2a 00 98 51 00 2a 40 30 70  ......0*..Q.*@0p
<3>13 00 4a 0e 11 00 00 1e 10 0b d0 b4 20 90 31 10  ..J......... .1.
<3>12 6c d2 00 4a 0e 11 00 00 1c d5 09 80 a0 20 e0  .l..J......... .
<3>2d 10 10 60 a2 00 4a 0e 11 00 00 18 00 00 00 fc  -..`..J.........
<3>00 4c 31 37 54 0a 20 20 20 20 20 20 20 20 00 ba  .L17T.        ..

radeon 0000:01:00.0: VGA-1: EDID block 0 invalid.


The monitor in question is a Hyundai ImageQuest L17T. Note that the internal
LVDS still works fine.

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next             reply	other threads:[~2011-08-30 19:09 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-08-30 19:09 bugzilla-daemon [this message]
2011-08-30 19:15 ` [Bug 42112] radeon driver (kms) fails to read EDID data from external LCD monitor with kernel 3.0.4 on a RV350 chip bugzilla-daemon
2011-08-30 19:42 ` bugzilla-daemon
2011-08-30 20:11 ` bugzilla-daemon
2011-08-30 20:29 ` bugzilla-daemon

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