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Thread: Changing a screen resolution.

  1. #11
    Join Date
    Dec 2010
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    Poland
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    Distro
    Ubuntu 10.04 Lucid Lynx

    Re: Changing a screen resolution.

    Shall I write in german?
    I think that's better for other users to write in English, some users can have similar problems like that. You can help them

    I have typed
    Code:
     xrandr --addmode VGA 1920x1080
    and I have
    Code:
     xrandr: cannot find output "VGA"
    Ok, ok. In my computer isn't VGA but VGA1
    --addmode doesn't work.
    Code:
    xrandr: cannot find mode "1920x1080"
    Last edited by profesior; December 18th, 2010 at 11:25 AM.

  2. #12
    Join Date
    Nov 2010
    Location
    Berlin, Germany
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    Xubuntu 12.04 Precise Pangolin

    Re: Changing a screen resolution.

    How is your monitor connected to your machine?

    What is the output of
    Code:
    xrandr
    You may also try to skip the xrandr-part and go directly to the configuration of xorg.conf, but that would be risky because you don't know if the video-mode ist supported by your video-chip. Then I would at least check with "hwinfo" before.

  3. #13
    Join Date
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    4,534
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    Xubuntu 12.04 Precise Pangolin

    Re: Changing a screen resolution.

    Quote Originally Posted by profesior View Post
    I think that's better for other users to write in English, some users can have similar problems like that. You can help them

    I have typed
    Code:
     xrandr --addmode VGA 1920x1080
    and I have
    Code:
     xrandr: cannot find output "VGA"
    Ok, ok. In my computer isn't VGA but VGA1
    --addmode doesn't work.
    Code:
    xrandr: cannot find mode "1920x1080"
    I didn't see that you've edited your post. Then you have to add the "Modeline" like described at the link I posted.

  4. #14
    Join Date
    Dec 2010
    Location
    Poland
    Beans
    6
    Distro
    Ubuntu 10.04 Lucid Lynx

    Re: Changing a screen resolution.

    You gave me a link:
    https://wiki.ubuntu.com/X/Config/Res...%20resolutions
    I've read there how to add undetected resolution.
    Modeline "1920x1080_60.00" wasn't exist, because it hadn't detected. So, I typed:
    Code:
     $ cvt  1920 1080
    There was sth like this
    Code:
    # 1920x1080 59.96 Hz (CVT 2.07M9) hsync: 67.16 kHz; pclk: 173.00 MHz
    Modeline "1920x1080_60.00"  173.00   2048 2248 2576   1083 1088 1120 -hsync +vsync
    Next, I created new modeline:
    Code:
    $ xrandr --newmodeline "1920x1080_60.00"  173.00  2048 2248 2576  1083 1088 1120 
    -hsync +vsync
    And , at the end:
    Code:
    $ xrandr --addmodeline "1920x1080_60"
    In System -> Preferences -> Monitors showed new screen resolution.I've chosen 1920x1080 and enjoy good resolution Thanks for help.
    Ein Bier fur Dich

  5. #15
    Join Date
    Nov 2010
    Location
    Berlin, Germany
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    4,534
    Distro
    Xubuntu 12.04 Precise Pangolin

    Re: Changing a screen resolution.

    Are you using an LCD, since you only have added a video mode with 60 Hz refresh rate, I mentioned it earlier.

    And you're not already done, you still have to do the xorg.conf-part. Because when you reboot at this state, the resolution will be reset!
    Last edited by Krytarik; December 18th, 2010 at 12:59 PM.

  6. #16
    Join Date
    Dec 2010
    Location
    Poland
    Beans
    6
    Distro
    Ubuntu 10.04 Lucid Lynx

    Re: Changing a screen resolution.

    Yes, I know. That's no problem

  7. #17
    Join Date
    Nov 2010
    Location
    Berlin, Germany
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    4,534
    Distro
    Xubuntu 12.04 Precise Pangolin

    Re: Changing a screen resolution.

    Have a nice (winter)day then, bye!

  8. #18
    Join Date
    Nov 2006
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    Hidden!

    Re: Changing a screen resolution.

    Thank's It worked for me too.

    Well done!!!!:

    Code:
    cvt  1920 1080
    
    xrandr --newmode "1920x1080_60.00"  173.00  1920 2048 2248 2576  1080 1083 1088 1120 -hsync +vsync
    
    xrandr --addmode VGA1 "1920x1080_60.00"

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