[mythtv-users] Help getting HDMI to work for mythfrontend

R. G. Newbury newbury at mandamus.org
Wed Dec 1 15:56:42 UTC 2010


On 12/01/2010 09:27 AM, Alessandro wrote:
> On 1 December 2010 10:49, Jean-Yves Avenard<jyavenard at gmail.com>  wrote
>>> Looks like it sets 1440x900 - but a few lines later it sets 1024x768?
>> Yeah, something is changing the resolution back to 1024x768
> (cut)
>
>> If your custom modeline is good, you should get a picture now.
>
>
> Jean-Yves,
> I have changed the config to your recommendations, but the same issue
> - reverts to 1024x728 and no picture is displayed ! :(
> I think that the modeline must be my issue, as it's not working at all.
>
>> From the log file:
>
> Validating Mode "1440x900":
> (II) Dec 01 14:19:28 NVIDIA(0):     1440 x 900 @ 60 Hz
> (II) Dec 01 14:19:28 NVIDIA(0):     For use as DFP backend.
> (II) Dec 01 14:19:28 NVIDIA(0):     Mode Source: EDID
> (II) Dec 01 14:19:28 NVIDIA(0):       Pixel Clock      : 106.50 MHz
> (II) Dec 01 14:19:28 NVIDIA(0):       HRes, HSyncStart : 1440, 1520
> (II) Dec 01 14:19:28 NVIDIA(0):       HSyncEnd, HTotal : 1672, 1904
> (II) Dec 01 14:19:28 NVIDIA(0):       VRes, VSyncStart :  900,  903
> (II) Dec 01 14:19:28 NVIDIA(0):       VSyncEnd, VTotal :  909,  934
> (II) Dec 01 14:19:28 NVIDIA(0):       H/V Polarity     : +/-
> (II) Dec 01 14:19:28 NVIDIA(0):     Mode is valid.
> (II) Dec 01 14:19:28 NVIDIA(0):
>
> I assume using the values that it finds 'Valid' should work in the
> custom modeline?
> Thus, this should be ok right?
>
> Modeline "1440x900_60"  106.50  1440 1520 1672 1904  900 903 909 934
> +hsync -vsync
>
> I added that modeline - but still reverts back to 1024x768 and no image?
>
> Really stumped now..! :( Have no idea what to try next!
> Thanks a million for your help !

Wild suggestion. Rename your xorg.conf file, and reboot. Together the 
kernal and nvidia driver are allegedly capable of figuring things out!
If that does not work (and it may not), does running xnvidia-config 
produce an xorg.conf file which differs from what you are using.

Second thought: do these in the reverse order. Removing everything may 
leave you with no screen at all....Best set /etc/inittab to boot to 
level 3, before trying that! Then use 'startx'. Might be good to have a 
livecd available, or 'rescue is possible' on a USB stick.
(Sorry, preaching to the choir on that last bit!. Sounds like you have 
already had some experience in that area.)

Geoff

              R. Geoffrey Newbury			



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