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Old 11-04-07, 08:22 AM   #1
onex
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Join Date: Nov 2007
Posts: 4
Default EDID resolution problem

hi,

i have two 21" viewsonic lcd-panels both connected to an 8600gt card via dvi.
one panel can't "tell" his EDID-settings so it isn't recognized correctly by the nvidia-driver anymore.
after checking the Xorg.0.log i got these lines:
Code:
(II) NVIDIA(0): Frequency information for ViewSonic VP2130 SERIES (DFP-0):
(II) NVIDIA(0):   HorizSync   : 30.000-92.000 kHz
(II) NVIDIA(0):   VertRefresh : 50.000-75.000 Hz
(II) NVIDIA(0):     (HorizSync from EDID)
(II) NVIDIA(0):     (VertRefresh from EDID)
(II) NVIDIA(0):
(II) NVIDIA(0): Native backend timings for ViewSonic VP2130 SERIES (DFP-0):
(II) NVIDIA(0):   1600 x 1200 @ 60 Hz
(II) NVIDIA(0):     Pixel Clock      : 162.00 MHz
(II) NVIDIA(0):     HRes, HSyncStart : 1600, 1664
(II) NVIDIA(0):     HSyncEnd, HTotal : 1856, 2160
(II) NVIDIA(0):     VRes, VSyncStart : 1200, 1201
(II) NVIDIA(0):     VSyncEnd, VTotal : 1204, 1250
(II) NVIDIA(0):     H/V Polarity     : +/+
so the first panel is "good:
but these are the lines for the second panel:
Code:
(II) NVIDIA(0): Frequency information for DFP-1:
(II) NVIDIA(0):   HorizSync   : 30.000-92.000 kHz
(II) NVIDIA(0):   VertRefresh : 50.000-75.000 Hz
(II) NVIDIA(0):     (HorizSync from SecondMonitorHorizSync X Config Option)
(II) NVIDIA(0):     (VertRefresh from SecondMonitorVertRefresh X Config
(II) NVIDIA(0):     Option)
(II) NVIDIA(0):
(II) NVIDIA(0): Native backend timings for DFP-1:
(II) NVIDIA(0):   640 x 480 @ 60 Hz
(II) NVIDIA(0):     Pixel Clock      : 25.18 MHz
(II) NVIDIA(0):     HRes, HSyncStart :  640,  656
(II) NVIDIA(0):     HSyncEnd, HTotal :  752,  800
(II) NVIDIA(0):     VRes, VSyncStart :  480,  490
(II) NVIDIA(0):     VSyncEnd, VTotal :  492,  525
(II) NVIDIA(0):     H/V Polarity     : +/+
how can i tell Xorg not to set a native backend resolution to 640 x 480 and use 1600 x 1200 instead?
i tried these options, but without success:
Code:
    Option         "UseEdidFreqs" "false"
    Option         "IgnoreEDID" "true"
    Option         "ModeValidation" "DFP-1: NoEdidDFPMaxSizeCheck"
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Old 11-06-07, 05:53 AM   #2
onex
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Join Date: Nov 2007
Posts: 4
Default Re: EDID resolution problem

is there really no solution to get this display working with xorg without the "resolution-checking"?
with windows i can use both displays with native resolution via dvi although one panel isn't "edid-talking" anymore. (this display was recognized as "standard monitor")
but how want's to use windows ...???
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Old 11-06-07, 09:49 AM   #3
netllama
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Join Date: Dec 2004
Posts: 8,763
Default Re: EDID resolution problem

Please see the forum sticky posts.
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Old 11-06-07, 10:24 AM   #4
onex
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Join Date: Nov 2007
Posts: 4
Question Re: EDID resolution problem

Quote:
Originally Posted by netllama
Please see the forum sticky posts.
what do you mean?
i nearly checked the whole forum before posting but i didn't found any working tips for my problem ...
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Old 11-06-07, 10:31 AM   #5
netllama
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Join Date: Dec 2004
Posts: 8,763
Default Re: EDID resolution problem

I mean that you need to follow the instructions in the sticky posts if you're expecting assistance.
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Old 11-07-07, 02:51 PM   #6
onex
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Join Date: Nov 2007
Posts: 4
Default SOLVED: EDID resolution problem

today i found this CustomEDID option ...
that's exactly the option i was searching for the whole time ...
now i'm using the edid-info from the working panel and everything is fine!!!!

anyway ... thanks for your help and this forum!

christian frey.
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Old 11-09-07, 03:23 PM   #7
antiplex
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Join Date: Nov 2007
Location: europe
Posts: 4
Default Re: EDID resolution problem

the ones who don't have a second identical display they get working might find this thread where i linked to a possible solution interesting...

i know it's in the solaris section... i realized this a little late
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