[mythtv-users] Ahh - Evil xorg and modelines

Steve Smith st3v3.sm1th at gmail.com
Mon Jun 18 14:40:18 UTC 2007


Damian,

Interesting:

1) It first accepts our 1024x768 @ 60hz


(II) NVIDIA(0):   Validating Mode "1024x768":
(II) NVIDIA(0):     1024 x 768 @ 60 Hz
(II) NVIDIA(0):     For use as DFP backend.

(II) NVIDIA(0):     Mode Source: EDID
(II) NVIDIA(0):       Pixel Clock      : 65.00 MHz
(II) NVIDIA(0):       HRes, HSyncStart : 1024, 1048
(II) NVIDIA(0):       HSyncEnd, HTotal : 1184, 1344
(II) NVIDIA(0):       VRes, VSyncStart :  768,  771

(II) NVIDIA(0):       VSyncEnd, VTotal :  777,  806
(II) NVIDIA(0):       H/V Polarity     : -/-
(II) NVIDIA(0):     Mode is valid.



2) Then later on it rejects it based on the "Native resolution":

(II) NVIDIA(0):   Validating Mode "1024x768":
(II) NVIDIA(0):     1024 x 768 @ 60 Hz
(II) NVIDIA(0):     Mode Source: EDID
(II) NVIDIA(0):       Pixel Clock      : 65.00 MHz
(II) NVIDIA(0):       HRes, HSyncStart : 1024, 1048

(II) NVIDIA(0):       HSyncEnd, HTotal : 1184, 1344
(II) NVIDIA(0):       VRes, VSyncStart :  768,  771
(II) NVIDIA(0):       VSyncEnd, VTotal :  777,  806
(II) NVIDIA(0):       H/V Polarity     : -/-
(WW) NVIDIA(0):     Mode is rejected: Mode (1024 x 768) is too large for DFP

(WW) NVIDIA(0):     Native Resolution (Max: 800 x 600).


II) NVIDIA(0):   Validating Mode "1024x768":
(II) NVIDIA(0):     1024 x 768 @ 60 Hz
(II) NVIDIA(0):     Mode Source: X Server
(II) NVIDIA(0):       Pixel Clock      :
65.00 MHz
(II) NVIDIA(0):       HRes, HSyncStart : 1024, 1048
(II) NVIDIA(0):       HSyncEnd, HTotal : 1184, 1344
(II) NVIDIA(0):       VRes, VSyncStart :  768,  771
(II) NVIDIA(0):       VSyncEnd, VTotal :  777,  806

(II) NVIDIA(0):       H/V Polarity     : -/-
(WW) NVIDIA(0):     Mode is rejected: Mode (1024 x 768) is too large for DFP
(WW) NVIDIA(0):     Native Resolution (Max: 800 x 600).


So what we need to do first of all is convince it to either a) Ignore the
native resolution OR b) that the native resolution is bigger...

(Here's someone else with the same problem:
http://www.linuxquestions.org/questions/showthread.php?t=560726 )

Option a)
We try:
    Option "ModeValidation" "NoDFPNativeResolutionCheck"

In the Device and Monitor sections (for good measure ;-).
Now retry...

(Remember we're going for 1024 x 768 at 60hz at this point...walk before we
run.)


Option b)
We up the ante and put in the Monitor section:

   HorizSync    15-100    #Let's just go mad here and put a really wide
range!
   VertRefresh  25-100    #again make sure it never refuses us!

And in both Device and Monitor sections:
    Option "ModeValidation" "NoDFPNativeResolutionCheck"
    Option "UseEDID" "FALSE"

(Remember we're going for 1024 x 768 at 60hz at this point...walk before we
run.)


Then redo the startx with 255 debugging, let us see both log files and the
config files too so we're not confused as to the config and the result.

Cheers

Steve-
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