On Sun, Dec 13, 2009 at 11:44 PM, Xavier <[email protected]> wrote: > Another apparently harmless message.. But I find it quite curious. > Especially that they seem pretty harmful in the case of > http://bugs.freedesktop.org/show_bug.cgi?id=25393 > > So my setup is nv35 with a 19' CRT screen connected to vga output. > I get random occurrences of this message : > [drm:edid_is_valid] *ERROR* EDID checksum is invalid, remainder is 161 > [drm:edid_is_valid] *ERROR* Raw EDID: > > But I do not get any of the bad symptoms described in bug 25393 : no > crashes, no screen deactivation, no corruption (though I did not > manage to make suspend-to-ram work yet). On the other hand, I do not > use that box much, so maybe I don't use it enough to get/see all the > bad symptoms. > > And in my case, I doubt the raw edid is valid as it seems different > every time (and the remainder too). > > I just made a fresh boot, with X started automatically. The error did > not occur. Then I restarted X (init 3 ; init 5) and it appeared. The > corresponding kernel log is attached. > > I just had a look at the different EDID I got, and put 5 of them in a > file. It actually looks like 1 2 3 and 5 are the same EDID, but they > all seem to be cut, at a different place. I guess they would be valid > otherwise as I can see my screen model : MM904U > The 4th one is completely different though, but it happened right > after I played with gallium, got a lot of errors and X lock and killed > X. > > So I guess I have mainly two questions, out of curiosity : > 1) why does the edid seem to be randomly cut ? > 2) why doesn't it have any apparent bad effects other than an error in > kernel log ? >
I just managed to get my complete edid using the read-edid tool. After unloading nouveau (it didnt work otherwise), I did get-edid | hexdump -C 00000000 00 ff ff ff ff ff ff 00 26 cd 44 19 3f 40 00 00 |........&....@..| 00000010 2c 0e 01 03 68 24 1b 78 2a 76 14 a0 56 47 99 26 |,...h$.x*v..VG.&| 00000020 12 48 4c a4 43 00 31 59 45 59 61 59 81 59 81 99 |.HL.C.1YEYaY.Y..| 00000030 a9 4f 01 01 01 01 86 3d 00 c0 51 00 30 40 40 a0 |.O.....=..Q.0@@.| 00000040 13 00 68 0e 11 00 00 1e ea 24 00 60 41 00 28 30 |..h......$.`A.(0| 00000050 30 60 13 00 68 0e 11 00 00 1e 00 00 00 fc 00 4d |0`..h..........M| 00000060 4d 39 30 34 55 0a 20 20 20 20 20 20 00 00 00 fd |M904U. ....| 00000070 00 32 a0 1e 60 14 00 0a 20 20 20 20 20 20 00 23 |.2..`... .#| 00000080 Is it just some timing issue or something ? _______________________________________________ Nouveau mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/nouveau
