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Old 06-13-07, 01:49 PM   #1
rg2003
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Default 100.14.09 - NVIDIA(GPU-0): Unable to read EDID for display device DFP-0

Driver version 9755 works OK, but after upgrade to 100.14.09 the display (Viewsonic VX2025wm attached to a GeForce 7300 GT) just displays "out of range" and stays blank. After modifying the xorg.conf parameters, all the display can manage is 640x480..

With 9755 I get:
...
(II) NVIDIA(0): Support for GLX with the Damage and Composite X extensions is
(II) NVIDIA(0): enabled.
(II) NVIDIA(0): NVIDIA GPU GeForce 7300 GT at PCI:1:0:0 (GPU-0)
(--) NVIDIA(0): Memory: 262144 kBytes
(--) NVIDIA(0): VideoBIOS: 05.73.22.25.51
(II) NVIDIA(0): Detected PCI Express Link width: 16X
(--) NVIDIA(0): Interlaced video modes are supported on this GPU
(--) NVIDIA(0): Connected display device(s) on GeForce 7300 GT at PCI:1:0:0:
(--) NVIDIA(0): ViewSonic VX2025wm (DFP-0)
(--) NVIDIA(0): ViewSonic VX2025wm (DFP-0): 330.0 MHz maximum pixel clock
(--) NVIDIA(0): ViewSonic VX2025wm (DFP-0): Internal Dual Link TMDS
(II) NVIDIA(0): Assigned Display Device: DFP-0
(II) NVIDIA(0): Validated modes:
(II) NVIDIA(0): "1680x1050"
(II) NVIDIA(0): "1280x1024"
(II) NVIDIA(0): "1024x768"
(II) NVIDIA(0): "800x600"
(II) NVIDIA(0): "640x480"
(II) NVIDIA(0): Virtual screen size determined to be 1680 x 1050
(--) NVIDIA(0): DPI set to (99, 98); computed from "UseEdidDpi" X config
(--) NVIDIA(0): option
(--) Depth 24 pixmap format is 32 bpp
(II) do I need RAC? No, I don't.

With 100.14.09 I get:
....
(II) NVIDIA(0): Support for GLX with the Damage and Composite X extensions is
(II) NVIDIA(0): enabled.
(WW) NVIDIA(GPU-0): Unable to read EDID for display device DFP-0
(II) NVIDIA(0): NVIDIA GPU GeForce 7300 GT (G73) at PCI:1:0:0 (GPU-0)
(--) NVIDIA(0): Memory: 262144 kBytes
(--) NVIDIA(0): VideoBIOS: 05.73.22.25.51
(II) NVIDIA(0): Detected PCI Express Link width: 16X
(--) NVIDIA(0): Interlaced video modes are supported on this GPU
(--) NVIDIA(0): Connected display device(s) on GeForce 7300 GT at PCI:1:0:0:
(--) NVIDIA(0): DFP-0
(--) NVIDIA(0): DFP-0: 330.0 MHz maximum pixel clock
(--) NVIDIA(0): DFP-0: Internal Dual Link TMDS
(II) NVIDIA(0): Assigned Display Device: DFP-0
(WW) NVIDIA(0): No valid modes for "1680x1050"; removing.
(WW) NVIDIA(0): No valid modes for "1280x1024"; removing.
(WW) NVIDIA(0): No valid modes for "1024x768"; removing.
(WW) NVIDIA(0): No valid modes for "800x600"; removing.
(II) NVIDIA(0): Validated modes:
(II) NVIDIA(0): "640x480"
(II) NVIDIA(0): Virtual screen size determined to be 640 x 480
(WW) NVIDIA(0): Unable to get display device DFP-0's EDID; cannot compute DPI
(WW) NVIDIA(0): from DFP-0's EDID.
(==) NVIDIA(0): DPI set to (75, 75); computed from built-in default
(==) NVIDIA(0): Disabling 32-bit ARGB GLX visuals.
(--) Depth 24 pixmap format is 32 bpp
(II) do I need RAC? No, I don't.

Reverting back to driver version 9755, and everything works OK again..

I first had these problems running kernel version 2.6.22-rc4 on FC6, but reverted to 2.6.21.3 just in case (but no change..)

I am enclosing a copy of the bug report file..

Thanks,


Robert Gadsdon.
Attached Files
File Type: log nvidia-bug-report-100.14.09.log (107.6 KB, 181 views)
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Old 06-13-07, 02:54 PM   #2
netllama
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Default Re: 100.14.09 - NVIDIA(GPU-0): Unable to read EDID for display device DFP-0

In your bug report I see:
(WW) NVIDIA(GPU-0): Unable to read EDID for display device DFP-0

I'd like to see a bug report against 1.0-9755, generated while the problem is not present.
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Old 06-13-07, 03:54 PM   #3
rg2003
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Post Re: 100.14.09 - NVIDIA(GPU-0): Unable to read EDID for display device DFP-0

This is the 'bug report' for 9755, with X running correctly:
Attached Files
File Type: log nvidia-bug-report-9755-withx.log (95.9 KB, 263 views)
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Old 06-13-07, 04:54 PM   #4
netllama
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Default Re: 100.14.09 - NVIDIA(GPU-0): Unable to read EDID for display device DFP-0

How is the display attached to the graphics card?
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Old 06-13-07, 05:21 PM   #5
rg2003
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Default Re: 100.14.09 - NVIDIA(GPU-0): Unable to read EDID for display device DFP-0

Display is connected by DVI cable..
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Old 06-13-07, 06:19 PM   #6
netllama
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Default Re: 100.14.09 - NVIDIA(GPU-0): Unable to read EDID for display device DFP-0

Directly connected with no intermediary devices?
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Old 06-13-07, 07:04 PM   #7
rg2003
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Default Re: 100.14.09 - NVIDIA(GPU-0): Unable to read EDID for display device DFP-0

Yes. Direct-connect. The cable is one I have used for several years.
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Old 06-14-07, 10:15 AM   #8
alwin
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Default Re: 100.14.09 - NVIDIA(GPU-0): Unable to read EDID for display device DFP-0

I have the same! Using the "nv" driver, I get support for 1080P on my philips 9532 panel. I connect via DVI from a 5200 to an HDMI input via a simple connector-converter (no amp or other unit in between).

When switching to 100.14.09 nvidia driver I can only run 640x480...

The only two things I'm hoping for from nvidia is support for 1080p with my philips and support for h264 decoding (with time) to help my mythfrontend main cpu a little bit. (PS I am changing the nvidia card to a 8500gt soon).

I can upload a log as well later today.

Alwin
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Old 06-14-07, 12:57 PM   #9
inlikeFlynn
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Default Re: 100.14.09 - NVIDIA(GPU-0): Unable to read EDID for display device DFP-0

Just to let you know, I am seeing the same problem with both a 6800GT and a Quadro 5600 in conjunction with two Viewsonic VX2025's and twinview.

Driver 9755 works fine, update to 100.14.09 and the EDID cannot be read from DFP1 in my case.

Strangely enough two Dell LCD's work fine with twinview and driver 100.14.09. I have heard that the VX2025's can be unstable but this seems to be a driver problem as 9755 is working and 100.14.09 is not.
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Old 06-14-07, 01:56 PM   #10
inlikeFlynn
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Default Re: 100.14.09 - NVIDIA(GPU-0): Unable to read EDID for display device DFP-0

Here are the bug reports for both drivers, 9755 being successful and 1001 having the EDID problem.

Thanks
Attached Files
File Type: zip nvidia-bug-report-1001.zip (51.8 KB, 179 views)
File Type: zip nvidia-bug-report-9755.zip (52.4 KB, 155 views)
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Old 06-14-07, 06:00 PM   #11
pius
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Default Re: 100.14.09 - NVIDIA(GPU-0): Unable to read EDID for display device DFP-0

Same here. 9755 works fine, 100.14.09 fails reading EDID for CRT-1.
I have Iiyama LCD connected to D-SUB.

Bug reports for both drivers attached. I hope it helps.
Attached Files
File Type: log nvidia-bug-report-1.0-9775.log (115.7 KB, 180 views)
File Type: log nvidia-bug-report-100.14.09.log (117.9 KB, 153 views)
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Old 06-14-07, 06:08 PM   #12
netllama
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Default Re: 100.14.09 - NVIDIA(GPU-0): Unable to read EDID for display device DFP-0

As a workaround, can everyone please try the following:
0) Run nvidia-settings with 1.0-9755 (where the problem is not present)
1) Under the GPU section, click on the entry for the DFP (that is failing with 100.14.09), and then click the 'Acquire EDID' button, and save the EDID somewhere.
2) Add the CustomEDID option to the Device section of xorg.conf:
Option "CustomEDID" "DFP-0:/path/to/saved/EDID/file/edid.bin"

Adjust DFP-0 in the above to correspond to the actual DFP that is listed as failing in your X log (or bug report). Also, adjust /path/to/saved/EDID/file to the actual location of the saved EDID file (including the filename). See the driver README for more details on this option.
3) (Re)install 100.14.09, and verify whether the problem is no longer present.

thanks,
Lonni
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