How to set dpi in Debian Squeeze?

[JoeS]

I have my dpi set to 91x91. Is this good for a 19" Monitor set to 1440x900?
How can I change the dpi on Debian Squeeze?

Thanks

[oz]

I have my dpi set to 91x91. Is this good for a 19" Monitor set to 1440x900?
How can I change the dpi on Debian Squeeze?

Your monitor manual/guide should give the correct DPI to be used. You can also use an online DPI calculator to get the correct DPI for your monitor:

DPI Calculator / PPI Calculator

For my own monitor, I use the following option in the "Monitor" section of the /etc/X11/xorg.conf file:

    Option         "DPI" "94x94"

[JoeS]

I tried that. It doesn't seem to work on Debian Squeeze

Thanks

[oz]

You could try adding the following to a ~/.Xdefaults or ~/.Xresources file, then restart X:

*.dpi:    94

...changing the 94 to your desired resolution.

[JoeS]

None of those worked, but I was able to set it in xorg.conf:
DisplaySize 409.26 255.79 # mm

I found a article that show how to calculate the DisplaySize:
25.4 divided by desired dpi x resolution
25.4/89.37 x 1440=409.26

24.4 converts from inches to millimeters
89.37 the dpi for my monitor
I checked on the dpi converter and mine was set very close already.

Thanks for help