[Bug 135557] Re: [i965gm] Kubuntu: Screen dimensions of external monitor not correct on X server startup (intel driver)

[7oby]

The external and internal display agree on a resolution, which both displays support. The motivation behind this algorithm for Initial Mode Selection Keith Packard explaines in this blog:
http://keithp.com/blogs/X_output_status_july_2008/

This explains your observation of the "wrong" initial mode resolution.
The second observation about the DPI stems from the same I assume: The
system gets the DPI of ONE of the displays and in your case it seems to
be the wrong one. This has quiet some implication e.g. to Firefox font
rendering.

Anyway for the second issue there's at least a workaround: KDE System
Settings / Appearance / Fonts / Force DPI for Fonts. Or use some
xserverrc to override the hard way.

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[i965gm] Kubuntu: Screen dimensions of external monitor not correct on X server startup (intel driver)
https://bugs.launchpad.net/bugs/135557
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