Comment 16 for bug 194760

Revision history for this message
DickeyWang (hwang313000) wrote : Re: EDID fail

I'm also having this problem on my 14" Lenovo Thinkpad T61p (with Nvidia Quadro FX 570M video card, LCD native resolution is 1400x1050), and since it's a laptop, I can not get informations like bandwidth/frequencies of the LCD. Although I did find something that may be interesting: when running the open source mesa driver, I can set the monitor into 1400x1050, 1024x768, 800x600, 640x480, however the resolution 1280x960 is missing, on the other hand, when I use the restricted driver (both 169.12 and 173.14.05 via EnvyNG), both 1400x1050 and 1280x960 is selectable, but the resolution of 1024x768 and 800x600 is missing, instead I see some weird resolutions like 800x512 or something.
Anyway, attached here is a bug report log file that I generated using "startx -- -logverbose 6" and "nvidia-bug-report.sh" (comes with the restricted Nvidia driver ), and part of it reads:
(--) NVIDIA(0): Raw EDID bytes:
(--) NVIDIA(0):
(--) NVIDIA(0): 00 ff ff ff ff ff ff 00 30 ae 22 40 00 00 00 00
(--) NVIDIA(0): 22 11 01 03 80 1d 15 78 ea 6f 95 9c 54 4c 87 26
(--) NVIDIA(0): 21 50 54 00 00 00 01 01 01 01 01 01 01 01 01 01
(--) NVIDIA(0): 01 01 01 01 01 01 30 2a 78 20 51 1a 10 40 30 70
(--) NVIDIA(0): 13 00 1f d7 10 00 00 18 25 23 78 20 51 1a 10 40
(--) NVIDIA(0): 30 70 13 00 1f d7 10 00 00 18 00 00 00 0f 00 90
(--) NVIDIA(0): 43 32 90 43 28 0f 01 00 30 64 00 55 00 00 00 fe
(--) NVIDIA(0): 00 4c 54 44 31 34 31 45 4e 39 42 0a 20 20 00 f7
(--) NVIDIA(0):
(--) NVIDIA(0): --- End of EDID for LEN (DFP-0) ---
(--) NVIDIA(0):
(II) NVIDIA(0): Frequency information for LEN (DFP-0):
(II) NVIDIA(0): HorizSync : 53.299-63.981 kHz
(II) NVIDIA(0): VertRefresh : 50.000-60.000 Hz
(II) NVIDIA(0): (HorizSync from EDID)
(II) NVIDIA(0): (VertRefresh from EDID)
I suspect the HorizSync value is wrong, but I don't know much about the EDID stuff. The detailed bug log file is attached.