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Thread: Ubuntu doesn't display 1280x1024 on new LCD TV

  1. #1
    Join Date
    May 2008
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    10

    Ubuntu doesn't display 1280x1024 on new LCD TV

    Hi,

    Sorry if this has been asked before, I'm still new to Linux/Ubuntu.

    I got this new LCD TV for my Ubuntu box (generic cheap brand, manual doesn't say much for specs), and I cannot display its maximum resolution of 1280x1024. I've messed around with the xorg.conf file, "dpkg-reconfigure xserver-xorg", as well as downgrading the xserver-xorg. Nothing seems to work thus far, though it should be taken into consideration that I "may" have done the above incorrectly. Any suggestions?

    Basic specs for the Ubuntu box:

    Pentium 4 2.4GHz
    Intel D865GLC mATX
    512MB DDR
    Onboard 865G Graphics
    Onboard SoundMAX4

    Thanks to all.

  2. #2
    Join Date
    May 2008
    Location
    Buenos Aires, Argentina
    Beans
    5
    Distro
    Ubuntu 8.04 Hardy Heron

    Re: Ubuntu doesn't display 1280x1024 on new LCD TV

    Have you tried setting the subsection Display in XXXX like this:

    SubSection "Display"
    Depth 24
    Modes "1280x768" "1280x1024" "1024x768" "832x624" "800x600" "720x400" "640x480"
    EndSubSection

    Also, have you add the HorizSync values in the Monitor section, like this:

    Section “Monitor”
    ...
    HorizSync 30-70
    EndSection

    There's an excelent tutorial to fix this, but it's in Spanish. In case you speak Spanish, here it is:

    The comments here are also helpful.

    By the way, you said that it is a LCD TV. Do you mean that you will use it a Monitor, and also watch TV like in a regular set?

  3. #3
    Join Date
    May 2008
    Location
    Buenos Aires, Argentina
    Beans
    5
    Distro
    Ubuntu 8.04 Hardy Heron

    Re: Ubuntu doesn't display 1280x1024 on new LCD TV

    The URL didn´t appear. Here it goes again:

    http://mamelonsetigero.wordpress.com...ion-en-ubuntu/

  4. #4
    Join Date
    Sep 2005
    Beans
    35

    Re: Ubuntu doesn't display 1280x1024 on new LCD TV

    Quote Originally Posted by ssjwolf View Post
    Hi,

    Sorry if this has been asked before, I'm still new to Linux/Ubuntu.

    I got this new LCD TV for my Ubuntu box (generic cheap brand, manual doesn't say much for specs), and I cannot display its maximum resolution of 1280x1024. I've messed around with the xorg.conf file, "dpkg-reconfigure xserver-xorg", as well as downgrading the xserver-xorg. Nothing seems to work thus far, though it should be taken into consideration that I "may" have done the above incorrectly. Any suggestions?

    Basic specs for the Ubuntu box:

    Pentium 4 2.4GHz
    Intel D865GLC mATX
    512MB DDR
    Onboard 865G Graphics
    Onboard SoundMAX4

    Thanks to all.
    1280x1024 doesn't sound like a proper resolution for a new TV.

    Perhaps you should be trying something like 1280x720?

    Check your Xorg log in /var/log. See what resolutions and modelines
    are being autodetected when X starts up. You can also look at MythTV
    wiki at mythtv.org and see if your TV is in their modeline database.
    You can also try standard modelines for different TV standards.

    TVs can be tricky and sometimes they broadcast faulty PnP information too.

    ...also you need to be install/run xserver-xorg-video-intel. You have to
    install device specific "drivers" as well as the main packages for X.

    Dunno if the 865G is too new or not. I run 945s myself.
    -- 1500 years ago, a few Irish monks saved civilization by pirating everything they could lay their hands on. --

  5. #5
    Join Date
    May 2008
    Beans
    10

    Re: Ubuntu doesn't display 1280x1024 on new LCD TV

    @agreppi - Yes I did try that initially, but it didn't seem to work, maybe I just did it wrong. But thank you anyway.

    @JEDIDIAH - Yeh well it has got a VGA input, so I suppose 1280x1024 isn't that strange, right? The Intel drivers seem to be installed right in Synaptic.

    But anyway thanks for the suggestions, but it seems I managed to fix it by deleting the xorg.conf file, rebooting, and getting that low-resolution mode configuration screen. Seems to work great now.

  6. #6
    Join Date
    Sep 2005
    Beans
    35

    Re: Ubuntu doesn't display 1280x1024 on new LCD TV

    Quote Originally Posted by ssjwolf View Post
    @agreppi - Yes I did try that initially, but it didn't seem to work, maybe I just did it wrong. But thank you anyway.

    @JEDIDIAH - Yeh well it has got a VGA input, so I suppose 1280x1024 isn't that strange, right? The Intel drivers seem to be installed right in Synaptic.

    But anyway thanks for the suggestions, but it seems I managed to fix it by deleting the xorg.conf file, rebooting, and getting that low-resolution mode configuration screen. Seems to work great now.
    It's a TV, not a monitor. You can't expect it to support resolutions
    and refresh rates that aren't part of some national broadcast standard.
    Now every panel can be different. You can't really assume anything. My
    last panel supported 1280x720 pretty easily but my current panel won't
    do anything by "normal" resolutions through the VGA.

    So I use DVI->HDMI these days.

    With my old SD set, I can get 640x480 through DVI->svideo just by letting
    Xorg sort itself out on it's own.

    Both TV's are connected to machines that run MythTV.
    -- 1500 years ago, a few Irish monks saved civilization by pirating everything they could lay their hands on. --

  7. #7
    Join Date
    Jun 2007
    Location
    England, UK
    Beans
    1,809
    Distro
    Ubuntu 11.10 Oneiric Ocelot

    Re: Ubuntu doesn't display 1280x1024 on new LCD TV

    Just to let you know, you can set resolutions in Hardy with:

    sudo xrandr -s 1280x1024

    If that doesn't work, enter this command:

    sudo xrandr -q

    Have a look to see what the highest resolution supported is, try that, then once that's set, try setting the resolution you know should work with your screen.

    Nathan

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