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I installed 12.10 to Asus Zenbook Prime UX31A. Now i face with resolution problem. Default resolution is 1920x1080, and Ubuntu display can normally detect it. But everything is too small with this resolution. Icons, Unity, File system, Browsers etc. For example in Chrome when i set zoom to 150%, then sites view normal. When i use another 16:9 resolution 1360x768, size problem is fixed, but in this mode display colors and view are blur and thick, so it harms eyes. And as my display supports 1920x1080, i think that i must keep this resolution and fix size problem. Any ideas? Screenshot: https://dl.dropboxusercontent.com/u/22319935/justshare/sc1.png and this https://dl.dropboxusercontent.com/u/22319935/justshare/sc2.png

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4 Answers

You can scale everything with xrandr but the result is not as pretty as it could be if there was true high resolution support.

To scale your resolution, first find the name of your display with xrandr:

lars:~$ xrandr
Screen 0: minimum 320 x 200, current 1366 x 768, maximum 1600 x 1600
LVDS connected 1366x768+0+0 (normal left inverted right x axis y axis) 344mm x 194mm
   1366x768       60.0*+
   1280x768       60.0 +
   1280x720       60.0 +
   1024x768       60.0 +
   1024x600       60.0 +
   800x600        60.0 +
   800x480        60.0 +
   720x480        60.0 +
   640x480        60.0 +
DFP1 disconnected (normal left inverted right x axis y axis)
CRT1 disconnected (normal left inverted right x axis y axis)

So, in my case my laptop display is called LVDS.

Then run the following to scale your resolution:

xrandr --output LVDS --scale 0.75x0.75

The Launcher and Panel might disappear for a moment, but just hover your cursor over them and they should reappear. You might also have to resize any open windows so that they fit the smaller resolution.

I wish there was true high resolution support that was this easy to configure. Sadly even GNOME 3.10 seems to only support changing the font size, even though GNOME handles that a lot better than Unity.

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Open dconf-editor and goto /org/gnome/desktop/interface/text-scaling-factor and adjust the scaling. Calculate the scaling by 1920/screen width in inches/96, assuming that you display is set to 96dpi now (check with xdpyinfo | grep dots). You can play a bit with he scaling factor to get to a size you like.

Note: This only changes fonts and some UI elements but not the browser contents. To do this you need to run all of X11 with a higher dpi setting of around 160. This can be done by adding

xrandr --dpi 160

to your ~.xprofile.

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Thank you, i did same as you said. All fonts got normal size. (i adjusted 1.5 to scale as 1920/(96*13.3)~1.5. But only text problem fixed. Other interface parts(such as unity,nautilus,terminal and all other packages' panels&images&icons) are the same even after changing dpi to 160. When i change dpi via terminal, nearly nothing happens. Only screen twinks once, and no any visual seeable change i feel. –  Elvin85 Apr 17 '13 at 8:28
It only worked for me when adding the line to .xprofile and restarting X11. I had to create .xprofile on my system. I made it executable too. From the terminal it does not seem to have any effect. It seems to be that this setting has to be applied at the start of X11. –  rfindeis Apr 17 '13 at 19:03
One more: Some tools insist on their own dpi settings (96 usually). Firefox has a setting layout.css.devPixelsPerPx in about about:config. Set to the ratio of the desired dpi and 96. Raising the dpi value across the system is quite a challenge. –  rfindeis Apr 17 '13 at 20:05
I poked around a bit more and found the some window managers ignore all dpi settings. See here for an explanation: askubuntu.com/questions/197828/… I did not try hacking the code of gnome-settings-daemon. I think for now besides enlarging the fonts this is a lost case. –  rfindeis Apr 17 '13 at 20:57
Thank you very much rfindeis. Last link you gave 80% solved my problem :) Now only some icon and panel problems are still existings. Such as Chrome tab-headers are too small (also was Chrome content, but i enlarged it to 150% via Chrome settings, and now it's ok), Unity icons are smaller than normal(but fonts are quite well now), thats all. I think i should find any guide which will help me to zoom all system panel and icons yeah? –  Elvin85 Apr 18 '13 at 4:34
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I think this is a problem that hasn't been addressed, yet. The retina display on some Apple computers has a resolution of 2880 x 1800. (Take a look at how ubuntu looks on one of these.) That's only any good if the icons etc. are actually displayed at a higher resolution as well.

For the moment, you can halve your resolution and get something of a decent size or use your ubuntu with a magnifying glass...

As more and more high-resolution displays hit the market, I figure that ubuntu will have a solution for this fairly soon, though.

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Would you know if there have been any announcement for high-res display support in the coming ubuntu versions? –  Peter Smit Feb 6 at 7:22
Ubuntu 14.04 has some support for high DPI screens. I, however, only found a way to scale titlebars and menus, not content - in Display settings. –  Suor Apr 18 at 4:28
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I had the same problem with my Vaio SVZ13114GXX. Give Unity Tweak Tool a try, I tested many different combinations from Appearance and ended up with changing font size from 11 to 13, and setting hinting to full. Test on your own system for best results.

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