Bug 32341

Summary:

nouveau only reads half the EDID.

Product:

xorg

Reporter:

James <buzzbuzz22>

Component:

Driver/nouveau

Assignee:

Nouveau Project <nouveau>

Status:

RESOLVED FIXED

QA Contact:

Xorg Project Team <xorg-team>

Severity:

normal

Priority:

medium

Version:

unspecified

Hardware:

Other

OS:

All

Whiteboard:

i915 platform:

i915 features:

Attachments:

Description	Flags
Make the server aware when the edid is larger than 128 bytes	none

Description James 2010-12-12 10:20:56 UTC

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

Comment 1 Emil Velikov 2012-11-04 18:05:21 UTC

Created attachment 69526 [details] [review]
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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