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Change screen size to avoid dead pixels.

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  • 26-05-2014 1:54pm
    #1
    riclad
    Registered Users Posts: 8,184 ✭✭✭


    I have a laptop.
    2gig ram,cpu 2.oghz.

    Theres a few dead pixels upper right at the top of the screen.
    I was wondering if theres a utility or terminal command in linux i can use
    to reduce the screen display area by 1 inch on 1 side.
    I can change resolution ,to 800x600 ,but this reduces the screen size by 1 inch approx on both sides .
    I,M running windows os, i can use powerstrip to change resolutions as well as display options control panel.
    I,LL install linux mint ,or ubuntu, if it helps to reduce the screen area .

    I,M experienced at installing linux from bootable usb drives.
    The dead pixels are about less than 1 inch, 0.75 inch round x o.70 inch circle


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    #2
    PrzemoF
    Registered Users Posts: 1,931 ✭✭✭PrzemoF


    xrandr should be able to do it.
    check --newmode option and --pos option

    Use cvt to get all those "magic" values (your new screen width has to be narrower that the original resolution) - I'm using offset 50 
    $ cvt 1024 600

# 1024x600 59.85 Hz (CVT) hsync: 37.35 kHz; pclk: 49.00 MHz
Modeline "1024x600_60.00"   49.00  1024 1072 1168 1312  600 603 613 624 -hsync +vsync

    Make a new mode: 
    $ xrandr --newmode "1024x600"   49.00  1024 1072 1168 1312  600 603 613 624 -hsync +vsync
$ xrandr --addmode default "1024x600"

    and apply it with a shift of x=50 y=0: 
    xrandr -s "1200x600" --output default --pos 50x0

    It's no guaranteed to work as I can't test it fully on virtual machine.
    Word "default" has to be replaced with output name. Type xrandr to get it (something like VGA, VBOX0 or LVDS)

    More info here:
    https://wiki.archlinux.org/index.php/Xrandr
    http://www.x.org/archive/current/doc/man/man1/xrandr.1.xhtml


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