Change screen size to avoid dead pixels.

riclad · 26-05-2014 12:54PM #1

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

PrzemoF · 26-05-2014 02:27PM

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

Change screen size to avoid dead pixels.

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