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I asked about fixing DPI in 12.04.

The 14.04 release notes list "Support for High-DPI screens and desktop scaling."

Post upgrade, it seems that nothing has changed. Similar symptoms from my previous post persist:

  • The 1" square here is closer to 1/2"
  • Despite the line xserver-command=X -dpi 170 in /etc/lightdm/lightdm.conf, xdpyinfo reports 96x96 dpi

I did find that I was able to use the "Scale for menu and title bars" slider in System Settings>Displays to fix title bar text size instead of setting org.gnome.desktop.interface text-scaling-factor as described here.

The last post also mentions that in Gnome 3, DPI is hard coded to 96. Is this a limitation in 14.04? (I am somewhat ignorant to the distinction between Gnome and Unity) Can I do anything to properly set my DPI?

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jake
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The option "Scale for menu and title bars" should suffice, it's kind of badly named, it scales everything and not only menu and title bars. I'm using it on a 13.3'' 3200x1800 screen and it works.

The only thing you have to add to that is an option in about:config in Firefox (and Thunderbird if you use it)

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LeartS
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  • If you have to adjust settings in other programs, it is not scaling everything. Perhaps it's scaling all of the system UI elements, but the question is about changing DPI system-wide. – jake Oct 06 '14 at 13:19
  • @jake: It scales DPI system-wide, but Firefox ignores the system wide setting. Every other software that I've tried works. – LeartS Oct 06 '14 at 14:51
  • @LeartS No it is not firefox's fault. Did you try eclipse? Netbeans? Chrome? Skype? Brackets? ... Firefox in fact, does pretty good job, especially with the AutoHiDPI addon. – Dimitris_M Apr 07 '15 at 20:12
  • Those are all applications that use their own toolkit and ignore what the underlying system tells them, i.e. "it's their fault". But a lot of them are rapidly adapting, for example Chrome, Chromium, Android Studio, PyCharm now all work by default – LeartS Jul 07 '15 at 09:06