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What is the simplest way to check my DPI in Ubuntu 9.10?

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up vote 5 down vote accepted
xdpyinfo|grep resolution

worked better for me. It means you don't have to read through hundreds of lines of text.

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Use the xdpyinfo command. If you want to narrow down the output:

xdpyinfo | grep dots


john@awesome~:xdpyinfo | grep dots
resolution:    92x92 dots per inch
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