[Bug 204363] New: EDID from Acer P1266 rejected as invalid

[Bug 204363] New: EDID from Acer P1266 rejected as invalid

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=204363

            Bug ID: 204363
           Summary: EDID from Acer P1266 rejected as invalid
           Product: Drivers
           Version: 2.5
    Kernel Version: 5.2.4
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri@kernel-bugs.osdl.org
          Reporter: felixhaedicke@web.de
        Regression: No

When plugging in an Acer P1266 via HDMI, I get the following error messages:

[   34.319344] amdgpu 0000:0e:00.0: HDMI-A-1: EDID is invalid:
[   34.319347]  [00] BAD  00 ff ff ff ff ff ff 00 04 72 01 70 13 2f 00 00
[   34.319348]  [00] BAD  27 12 01 03 80 00 00 78 0a fe 40 a4 57 59 8e 26
[   34.319348]  [00] BAD  00 50 5d ff ff 80 81 00 81 80 81 40 90 40 a9 40
[   34.319349]  [00] BAD  95 00 b3 00 81 c0 64 19 00 40 41 00 26 30 18 88
[   34.319349]  [00] BAD  36 00 13 8e 21 00 00 18 00 00 00 fd 00 32 55 1e
[   34.319350]  [00] BAD  64 11 00 0a 20 20 20 20 20 20 00 00 00 fc 00 41
[   34.319350]  [00] BAD  43 45 52 20 50 31 32 36 36 0a 20 20 00 00 00 ff
[   34.319351]  [00] BAD  00 4a 37 30 30 31 30 30 31 35 39 30 31 0a 01 90
[   34.319415] [drm:dc_link_detect [amdgpu]] *ERROR* No EDID read.

Tested with amdgpu / Radeon RX Vega 56 and i915 / Intel Iris 6100.

-- 
You are receiving this mail because:
You are watching the assignee of the bug.
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

[Bug 204363] EDID from Acer P1266 rejected as invalid

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=204363

Adam Jackson (ajax@redhat.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ajax@redhat.com

--- Comment #1 from Adam Jackson (ajax@redhat.com) ---
Yep, that's broken alright. The checksum (last byte) should be 0xa7 not 0x90.
The block does look valid otherwise though.

-- 
You are receiving this mail because:
You are watching the assignee of the bug.
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel