[mythtv-users] New LCD TV - complains about 'mode not supported'

xavier hervy xavier.hervy at bluebottle.com
Tue Aug 5 12:54:05 UTC 2008


On Tue, 2008-08-05 at 20:33 +1000, David Whyte wrote:
> Hi all,
> 
> Bought a new Samsung 32" TV (Series 4 if it is important) for my
> bedroom and hooked it up to my mythtv box via a DVI to HDMI cable.
> When I booted the box, you could see the mythbuntu boot up screens but
> when it logged into the desktop it comes up with a message about the
> 'mode is not supported'.
> 
> I imagine that this is just a resolution issue, but I have no real
> idea how to fix it.  I tried doing a dpk-reconfigure xserver-xorg but
> that didn't even list the 1366x768 resolution (or anything similar).
1366x768 is nearly never supported by the graphic cards
> 
> Looking in the xorg.log, it has the following lines:
> 
> (II) intel(0): Printing probed modes for output TMDS-1
> (II) intel(0): Modeline "1360x768"x60.0   85.50  1360 1424 1536 1792
> 768 771 777 795 +hsync +vsync (47.7 kHz)
> (II) intel(0): Modeline "1280x720"x60.0   74.25  1280 1390 1430 1650
> 720 725 730 750 +hsync +vsync (45.0 kHz)
> (II) intel(0): Modeline "1024x768"x60.0   65.00  1024 1048 1184 1344
> 768 771 777 806 -hsync -vsync (48.4 kHz)
> (II) intel(0): Modeline "800x600"x60.3   40.00  800 840 968 1056  600
> 601 605 628 +hsync +vsync (37.9 kHz)
> (II) intel(0): Modeline "640x480"x60.0   25.20  640 656 752 800  480
> 490 492 525 -hsync -vsync (31.5 kHz)
> 
> which seem to indicate that the 1360x768 modeline is good but I have
> no idea how best to configure my PC to work.
> 
> For the record, the specs are as follows:
> 
> AOpen MP915-X miniPC
> Intel 915GM graphics chip
> Output via DVI.
> mythbuntu Gutsy
> 
> Anybody here kind enough to give me a hand configuring up my new TV?
> 
> Regards,
> Whytey
the log show you resolution you could use
Try the native resolution of you screen (nearest should be 1360x768)
xrandr --output TMDS-1 --mode 1360x768

You can eventually specified the preferred resoulion in you xorg file.
in your monitor section add:
option "PreferredMode" "1360x768"
Xavier




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