[Bug 42112] New: radeon driver (kms) fails to read EDID data from external LCD monitor with kernel 3.0.4 on a RV350 chip
bugzilla-daemon at bugzilla.kernel.org
bugzilla-daemon at bugzilla.kernel.org
Tue Aug 30 12:09:43 PDT 2011
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 at kernel-bugs.osdl.org
ReportedBy: mrsteven at 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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