Hi,
I have two problems with the pre-installed Ubuntu release when it's connected to a TV. The TV is a Philips 43PFL9632D10 and I connect it to a HDMI port. The supported resolutions are:
640 x 480 60 Hz
800 x 600 60 Hz
1024 x 768 60 Hz
1280 x 768 60 Hz
1360 x 768 60 Hz
1920 x 1080i 60 Hz
1920 x 1080p 60 Hz
Thus it displays the boot procedures fine all the way until the login screen should pop up. I checked with a monitor and Ubuntu uses 1280x1024 for the login screen. My work around is to use automatic login to the fit-user with the display resolution set to 1024x768. Do anyone have a simple solution on how to change the resolution on for the login screen?
My second question concerns how to change the resolution to 1920x1080. The display resolutions offered by Ubuntu does not fit the TV resolutions (unknown display; 1920x1200 60Hz is closest to what I want, 1024x768 is the highest that is supported by the TV). I found some correspondence in the forum but it seems to be mixed opinions whether it's safe to use the "fail-safe" option to reconfigure X. Can you who tried it lets us know the outcome.
The other alternative would be to modify the xorg.conf. I would guess that some of you sit on a good xorg.conf for a typical 1920x1080 60Hz LCD TV. Could you share it with us?
Best regards
Ubuntu X-configurations for TV
Re: Ubuntu X-configurations for TV
Hi,
I encountered with this problem too.
Seems that on some specific monitors (for example my MultiSync 20WGX) kernel drm module read corrupted modeline with display timings.
The write solution is rewrite drm module so it will not read modelines at all, and use some generic modeline instead.
Another solution is too write additional modeline validation checks to remove such modelines (worked for MultiSync 20WGX), but I need to test with more displays. To get log file and view corrupted modeline you can connect to fit-PC2 with ssh and fetch /var/log/Xorg.0.log after failure.
Another funny thing you can do is to boot fit-PC2 with some working display, and after succesfull login just unplug HDMI cable and plug it in your TV.
I encountered with this problem too.
Seems that on some specific monitors (for example my MultiSync 20WGX) kernel drm module read corrupted modeline with display timings.
The write solution is rewrite drm module so it will not read modelines at all, and use some generic modeline instead.
Another solution is too write additional modeline validation checks to remove such modelines (worked for MultiSync 20WGX), but I need to test with more displays. To get log file and view corrupted modeline you can connect to fit-PC2 with ssh and fetch /var/log/Xorg.0.log after failure.
Another funny thing you can do is to boot fit-PC2 with some working display, and after succesfull login just unplug HDMI cable and plug it in your TV.
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