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Thread: Xubuntu 13.04 External Display can't be set to 1920 × 1080

  1. #1
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    Xubuntu 13.04 External Display can't be set to 1920 × 1080

    I just installed Xubuntu 13.04 with Windows 8 dual boot on my Dell XPS 13 (2013) Ultrabook.

    All is good, except when I connect my ViewSonic HDMI 1080p Full HD External Monitor, it appears as Display DP1 in Xubuntu with a maximum screen resolution of 1024 x 768.

    In Windows 8 I can set it to 1920 x 1080. Any suggestions?

    Thanks in advance!

  2. #2
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    Re: Xubuntu 13.04 External Display can't be set to 1920 × 1080

    You can direct xrandr to set a different resolution. See this: Resolution
    Please mark your thread as solved if you get a satisfactory response.
    Linux user #556334 | Ubuntu user #35168

  3. #3
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    Re: Xubuntu 13.04 External Display can't be set to 1920 × 1080

    No joy. When I try this:

    xrandr --output DP1 --mode 1920x1080 --rate 60

    I get the following:


    xrandr: cannot find mode 1920x1080

    Any other suggestions?

  4. #4
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    Re: Xubuntu 13.04 External Display can't be set to 1920 × 1080

    After spending almost 3 hours playing around with xrandr, I've made some progress. The following commands "kind of" work:

    xrandr --newmode "1920x1080_60.00" 148.50 1920 2448 2492 2640 1080 1084 1089 1125 +hsync +vsync
    xrandr --addmode DP1 1920x1080
    xrandr --output eDP1 --primary --mode 1920x1080 --output DP1 --mode 1920x1080 --left-of eDP1

    Resolution on my external monitor looks "better", but is too wide and too tall - the standard date that appears in the top right hand corner is cut off in the middle of the day (eg, for Wednesday I can only see Wed before the edge of the screen). And this does NOT extend onto my laptop screen.

    The newmode command is obviously incorrect. Any help in what it should be for a HDMI 1920x1080 monitor???

    Pretty frustrating. Connecting my external display in Windows 8 took about 15 seconds. I've collectively spent over 4 hours on this simple problem so far.

    Any help much appreciated....

    Last edited by rdp1976; July 10th, 2013 at 08:11 AM.

  5. #5
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    Re: Xubuntu 13.04 External Display can't be set to 1920 × 1080

    Same thing happened with my Sony xbr before. I think I ended up with 1368x768 resolution, if I can remember it right. It was not 1920-1080 but the fonts and icons where acceptable.

  6. #6
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    Re: Xubuntu 13.04 External Display can't be set to 1920 × 1080

    Quote Originally Posted by rdp1976 View Post
    No joy. When I try this:

    xrandr --output DP1 --mode 1920x1080 --rate 60

    I get the following:


    xrandr: cannot find mode 1920x1080

    Any other suggestions?
    Please see this thread.
    Please mark your thread as solved if you get a satisfactory response.
    Linux user #556334 | Ubuntu user #35168

  7. #7
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    Re: Xubuntu 13.04 External Display can't be set to 1920 × 1080

    Thanks for the link to the other thread:
    http://ubuntuforums.org/showthread.p...=1#post8560183

    But unfortunately this didn't work either. I followed the instructions precisely, multiple times. The last command (STEP 4) below completely messes up my laptop display and my external display switches off completely.

    I can't believe how difficult this is???? If I can't get my external monitor to work with Xubuntu, I basically can't use Xubuntu. Very frustrating........ wasted HOURS on this.

    STEP 1
    $ cvt 1920 1080


    # 1920x1080 59.96 Hz (CVT 2.07M9) hsync: 67.16 kHz; pclk: 173.00 MHz
    Modeline "1920x1080_60.00" 173.00 1920 2048 2248 2576 1080 1083 1088 1120 -hsync +vsync

    STEP 2
    $ xrandr --newmode "1920x1080_60.00" 173.00 1920 2048 2248 2576 1080 1083 1088 1120 -hsync +vsync


    STEP 3
    $ xrandr --addmode DP1 1920x1080_60.00

    STEP 4
    $ xrandr --output DP1 --mode 1920x1080_60.00


    Any help, please!



  8. #8
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    Re: Xubuntu 13.04 External Display can't be set to 1920 × 1080

    FYI, the monitor I am using is:

    ViewSonic VX2739WM
    Model Number: VS12843
    Optimum Resolution: 1920x1080 WUXGA

    It is discontinued. http://www.viewsonic.com/us/vx2739wm.html

    Connecting to a new Dell XPS 13 (2013) ultrabook using the minidisplay port adapter:

    http://accessories.us.dell.com/sna/p...9&sku=331-2972



  9. #9
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    Re: Xubuntu 13.04 External Display can't be set to 1920 × 1080

    Have you looked at xorg.0.log? Do you have xorg.conf file?

  10. #10
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    Re: Xubuntu 13.04 External Display can't be set to 1920 × 1080

    There is no /etc/X11/xorg.conf file. Should I create one?

    There is /var/log/Xorg.0.log. I'm not sure what I'm looking for in there. This is what it contains regarding DP1, the port my external display is connected to:

    [ 12.687] (II) intel(0): Printing probed modes for output DP1
    [ 12.687] (II) intel(0): Modeline "1024x768"x60.0 65.00 1024 1048 1184 1344 768 771 777 806 -hsync -vsync (48.4
    kHz e)
    [ 12.687] (II) intel(0): Modeline "800x600"x60.3 40.00 800 840 968 1056 600 601 605 628 +hsync +vsync (37.9 kHz
    e)
    [ 12.687] (II) intel(0): Modeline "800x600"x56.2 36.00 800 824 896 1024 600 601 603 625 +hsync +vsync (35.2 kHz
    e)
    [ 12.687] (II) intel(0): Modeline "848x480"x60.0 33.75 848 864 976 1088 480 486 494 517 +hsync +vsync (31.0 kHz
    e)
    [ 12.687] (II) intel(0): Modeline "640x480"x59.9 25.18 640 656 752 800 480 489 492 525 -hsync -vsync (31.5 kHz
    e)

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