Find Correct dpi?

Message

paulb787 · Post by **paulb787** » Sat Oct 08, 2011 8:12 pm

I had to set a dpi option in my xorg.conf. To rid kde of tiny text. I used 96x96. Is there anyway for xorg to configure the dpi? Im not sure if i should be using
96 ,100, 98? i thought there might be a way to auto detect this?

PaulBredbury · Post by **PaulBredbury** » Sat Oct 08, 2011 8:39 pm

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$ xdpyinfo | grep -B1 dot
  dimensions:    1920x1080 pixels (372x231 millimeters)
  resolution:    131x119 dots per inch

If your DPI is being set correctly, then don't change it - instead, change the KDE font settings to increase the font size.

gerard27 · Post by **gerard27** » Sat Oct 08, 2011 9:26 pm

I had problems with dpi when I first connected my HP LP2475w monitor.
Not with fontsize,those you can adjust like Paul said,but with Gimp sizes.
They were way off.
Xorg uses the EDID of the monitor to determine dpi AFAIK.
So I ended up with this (snippet) in my xorg.conf:

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Section "Screen"
    Identifier "Screen0"
    Device "VideoCard0"
    Monitor "Monitor0"
    Option "UseEDIDDPI" "False"
    Option "DPI" "94 x 94"
#    Option "DisplaySize" "517 325"
EndSection

Option Display size didn't work.
I now have this output from xdpyinfo:

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xdpyinfo | grep -B1 dot
  dimensions:    1920x1200 pixels (519x324 millimeters)
  resolution:    94x94 dots per inch

which is close enough.
Gerard.

Edit: Original dpi was 87x90.