[Bug 32341] New: nouveau only reads half the EDID.

[Bug 32341] New: nouveau only reads half the EDID.

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

https://bugs.freedesktop.org/show_bug.cgi?id=32341

           Summary: nouveau only reads half the EDID.
           Product: xorg
           Version: unspecified
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
        ReportedBy: buzzbuzz22-PkbjNfxxIARBDgjK7y7TUQ@public.gmane.org
         QAContact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org


nv driver reads edid correctly.
nvidia driver reads edid correctly.
nouveau driver reads only half the EDID.

NV(0): EDID (in hex):
[    16.577] (II) NV(0):        00ffffffffffff003cad003700000000
[    16.577] (II) NV(0):        0a120103801009780a6837a454489a25
[    16.577] (II) NV(0):        0f4a4c3fef8001010101010101010101
[    16.578] (II) NV(0):        010101010101011d8018711c1620582c
[    16.578] (II) NV(0):        250010090000009e011d007251d01e20
[    16.578] (II) NV(0):        6e28550010090000001e000000fc0020
[    16.578] (II) NV(0):        33325f4c43445f54560a2020000000fd
[    16.578] (II) NV(0):        00313d0f2e08000a202020202020013f
[    16.578] (II) NV(0):        02032471500102048506111314150307
[    16.578] (II) NV(0):        12161f2010230907018301000066030c
[    16.578] (II) NV(0):        001000808c0ad08a20e02d10103e9600
[    16.578] (II) NV(0):        0403000000188c0aa01451f01600267c
[    16.578] (II) NV(0):        4300040300000099011d80d0721c1620
[    16.578] (II) NV(0):        102c258010090000009f011d00bc52d0
[    16.578] (II) NV(0):        1e20b828554010090000001e00000000
[    16.578] (II) NV(0):        000000000000000000000000000000f2


[   403.545] (II) NOUVEAU(0): EDID (in hex):
[   403.545] (II) NOUVEAU(0):   00ffffffffffff003cad003700000000
[   403.545] (II) NOUVEAU(0):   0a120103801009780a6837a454489a25
[   403.545] (II) NOUVEAU(0):   0f4a4c3fef8001010101010101010101
[   403.545] (II) NOUVEAU(0):   010101010101011d8018711c1620582c
[   403.545] (II) NOUVEAU(0):   250010090000009e011d007251d01e20
[   403.545] (II) NOUVEAU(0):   6e28550010090000001e000000fc0020
[   403.545] (II) NOUVEAU(0):   33325f4c43445f54560a2020000000fd
[   403.545] (II) NOUVEAU(0):   00313d0f2e08000a202020202020013f

[    24.423] (--) NVIDIA(0): Raw EDID bytes:
[    24.423] (--) NVIDIA(0):
[    24.423] (--) NVIDIA(0):   00 ff ff ff ff ff ff 00  3c ad 00 37 00 00 00 00
[    24.423] (--) NVIDIA(0):   0a 12 01 03 80 10 09 78  0a 68 37 a4 54 48 9a 25
[    24.423] (--) NVIDIA(0):   0f 4a 4c 3f ef 80 01 01  01 01 01 01 01 01 01 01
[    24.423] (--) NVIDIA(0):   01 01 01 01 01 01 01 1d  80 18 71 1c 16 20 58 2c
[    24.423] (--) NVIDIA(0):   25 00 10 09 00 00 00 9e  01 1d 00 72 51 d0 1e 20
[    24.423] (--) NVIDIA(0):   6e 28 55 00 10 09 00 00  00 1e 00 00 00 fc 00 20
[    24.423] (--) NVIDIA(0):   33 32 5f 4c 43 44 5f 54  56 0a 20 20 00 00 00 fd
[    24.423] (--) NVIDIA(0):   00 31 3d 0f 2e 08 00 0a  20 20 20 20 20 20 01 3f
[    24.423] (--) NVIDIA(0):   02 03 24 71 50 01 02 04  85 06 11 13 14 15 03 07
[    24.423] (--) NVIDIA(0):   12 16 1f 20 10 23 09 07  01 83 01 00 00 66 03 0c
[    24.423] (--) NVIDIA(0):   00 10 00 80 8c 0a d0 8a  20 e0 2d 10 10 3e 96 00
[    24.423] (--) NVIDIA(0):   04 03 00 00 00 18 8c 0a  a0 14 51 f0 16 00 26 7c
[    24.424] (--) NVIDIA(0):   43 00 04 03 00 00 00 99  01 1d 80 d0 72 1c 16 20
[    24.424] (--) NVIDIA(0):   10 2c 25 80 10 09 00 00  00 9f 01 1d 00 bc 52 d0
[    24.424] (--) NVIDIA(0):   1e 20 b8 28 55 40 10 09  00 00 00 1e 00 00 00 00
[    24.424] (--) NVIDIA(0):   00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 f2

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[Bug 32341] nouveau only reads half the EDID.

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=32341

--- Comment #1 from Emil Velikov <emil.l.velikov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
Created attachment 69526
  --> https://bugs.freedesktop.org/attachment.cgi?id=69526&action=edit
Make the server aware when the edid is larger than 128 bytes

Ever since nouveau has done KMS only, it has been using the drm core to fetch
the edid.

With the patch attached, xrandr & X print the complete edid rather than just
the first block (the header)

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[Bug 32341] nouveau only reads half the EDID.

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=32341

Emil Velikov <emil.l.velikov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

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