[Bug 90842] sna driver ignores DisplaySize setting in xorg.conf

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90842

--- Comment #6 from Martin Steigerwald <Martin at Lichtvoll.de> ---
Chris, okay, so its partly an X11 limitation, yet meanwhile I am setting
DisplaySizes for both displays:

martin at merkaba:~> egrep -i "using (monitor|initial)" /var/log/Xorg.0.log
[     9.503] (II) intel(0): Output LVDS1 using monitor section Notebook
[     9.503] (II) intel(0): Output DP2 using monitor section Extern
[     9.504] (--) intel(0): Output LVDS1 using initial mode 1920x1080 on pipe 0
[     9.504] (--) intel(0): Output DP2 using initial mode 1920x1080 on pipe 1

And it even appears to use some display size:

martin at merkaba:~> grep -i "physical" /var/log/Xorg.0.log 
[     9.689] (II) intel(0): Setting screen physical size to 508 x 285

which is neither

martin at merkaba:~> grep DisplaySize /etc/X11/xorg.conf.d/anzeige.conf 
        DisplaySize     344 193
        DisplaySize     531 299


And also it calculates standard DPI value of 96:

martin at merkaba:~> xdpyinfo | grep -i dots   
  resolution:    96x96 dots per inch

But well if it uses the 24 inch display as compat device, it may even make some
sense. The fonts still looked really small on it. But 1920x1080 on 24 inch is
certainly a much lower DPI than 1920x1080 on 15 inch.

Well, if its something that cannot be solved differently with X.org, I think I
will wait for Wayland and KDE Frameworks / Plasma 5 to deal with that, and use
the KDE setting for now. It works well enough.

So feel free to close the bug report.

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