[mythtv-users] Ahh - Evil xorg and modelines

[Steve Smith]

Damian,

I'm sure you know this but the

Modes "1024x768_60" "1024x768_70" "1024x768_75" "1024x768_85"
"800x600_x" "640x480_y"

...line tells X which of the graphics resolutions to (attempt) to use.
Of the ones it thinks you can use, it lets you cycle through them as
you describe.

Your problem seems to be that X for some reason is saying you can't
use some/all of the modes.

This is probably because it thinks that the monitor/graphics card
won't support them, hence why
we encourage you to use "--logverbose 5" because that tells you what X
is thinking about the resolutions.

The Nvidia drivers are quite clever and let you create a new
resolution WITHOUT a modeline just be specifying XxY_Z
in the Modes line as you have done (for an X by Y resolution at Z
refresh rate). I expect that having Modelines of
the same format might confuse it.

Either way use that --logverbose and we might be able to see what's
going on...i.e. why it's rejecting your choice of resolution.

Cheers

Steve



On 08/06/07, Damian Surr <damian at gingermagic.co.uk> wrote:
>
> Putting the same information into different modeline generators produces
> different results. What's a feller to do?
>
> Used 3 different sites to work out modelines for 1024x768 at 66, 70 75
> and 85Hz. Only the last one also let me enter Dot Clock Frequency.
> Not at my Myth machine at the moment. Just getting a list of things to
> try.
>
> # http://www.bohne-lang.de/spec/linux/modeline/
> # V-freq: 60.00 Hz  // h-freq: 47.80 KHz
> Modeline "1024x768_60" 60.80  1024 1056 1128 1272   768  768  770  796
>
> # V-freq: 70.00 Hz  // h-freq: 56.12 KHz
> Modeline "1024x768_70" 74.10  1024 1064 1152 1320   768  768  770  801
>
> # V-freq: 75.00 Hz  // h-freq: 60.31 KHz
> Modeline "1024x768_75" 81.55  1024 1064 1168 1352   768  768  770  804
>
> # V-freq: 85.00 Hz  // h-freq: 68.79 KHz
> Modeline "1024x768_85" 97.40  1024 1072 1192 1416   768  768  771  809
>
> #http://www.sh.nu/nvidia/gtf.php
> # 1024x768 @ 60.00 Hz (GTF) hsync: 47.70 kHz; pclk: 64.11 MHz
>   Modeline "1024x768_60.00"  64.11  1024 1080 1184 1344  768 769 772
> 795  -HSync +Vsync
>
> # 1024x768 @ 70.00 Hz (GTF) hsync: 56.00 kHz; pclk: 76.16 MHz
>   Modeline "1024x768_70.00"  76.16  1024 1080 1192 1360  768 769 772
> 800  -HSync +Vsync
>
> # 1024x768 @ 75.00 Hz (GTF) hsync: 60.15 kHz; pclk: 81.80 MHz
>   Modeline "1024x768_75.00"  81.80  1024 1080 1192 1360  768 769 772
> 802  -HSync +Vsync
>
> # 1024x768 @ 85.00 Hz (GTF) hsync: 68.59 kHz; pclk: 94.38 MHz
>   Modeline "1024x768_85.00"  94.38  1024 1088 1200 1376  768 769 772
> 807  -HSync +Vsync
>
> #http://xtiming.sourceforge.net/cgi-bin/xtiming.pl
> Modeline "1024x768 at 60" 64.56 1024 1056 1296 1328 768 783 791 807
> Modeline "1024x768 at 70" 78.36 1024 1056 1352 1384 768 783 792 807
> Modeline "1024x768 at 75" 85.56 1024 1056 1376 1408 768 782 792 807
> Modeline "1024x768 at 85" 100.94 1024 1056 1432 1464 768 782 793 807
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