provide tool to set dpi for kdm

This is even bigger issue as DPI is wrongly detected (15" 1920x1200 display got 145 DPI which have caused that all fonts
are too big to fit in windows - setting it to 120 DPI has solved the issue).
See https://wiki.ubuntu.com/LaptopTestingTeam/HPNW8240

It should also be taken properly during the upgrade of kdm package in order not to overwrite previous seeting.

Wouldn't it be more usefull to make the X.org configuration tool get the default DPI's right (perhaps by even asking the size of the monitor during configuration)? Novice users probably don't even know what DPI stands for and what it does... They'll just notice that their fonts strangely large / small.

These kind of things Should Just Work.

Some related links:
http://bugs.kde.org/show_bug.cgi?id=111754
http://process-of-elimination.net/wiki/Control_Font_DPI_in_X

I have to correct my initial note: X.org properly detects DPI (147), oly default fonts were too huge on Kubuntu.

After todays apt-get upgrade, the new font sizes defauls makes display very good looking on mine 147 DPI screen.

The only open issue is that GTK apps now have huge fonts (as default GTK font sizes are oviously still above 10pt). BTW, I test this only with Firefox (only GTK App I use).

KDE 3.5.5 has at least option to force fonts DPI with Appearance -> Fonts module. Not sure how this interacts with KDE Guidance.

Hi,

I noticed something when using compiz fusion especially.

When i set the DisplaySize parameter to set the dpi to 96 (as per this guide http://wiki.archlinux.org/index.php/Xorg7#Display_Size.2FDPI) , compiz fusion performance increased dramatically. It felt like i was using a new high end card, the performance was so smooth, and the UI felt more responsive

I think its not compiz fusion, but rather X performance itself which benefits from setting the DPI, (as regular KDE without compiz also seems more responsive), therefore for gutsy it might be a good idea to actually focus on getting it right on installation.

I am using Kubuntu Gutsy with the radeon driver on a 15" laptop screen (1024x768). X had set my dpi by default to 75 after setting dpi manually, UI responsiveness is fantastic!

Thanks and regards,
Bharat

I'd suggest a simple dialog that prompts the user to measure some lines on the screen and indicate which one is closest to an inch in length. The system could then configure X.org correctly.

Attached is a PNG I send people with Windows systems to help them fix their DPI issues.

Displayconfig is dead and will not receive any more features.