Greetings,

I'm having some trouble getting 100DPI fonts on a Slackware-current (from June 1st).

Here's what I've done, which works on another computer:

1. Change the font settings in xorg.conf to put 100dpi fonts first
2. Change the displaysize to in the xorg.conf monitor setting
3. try startx -dpi 100 (which works, and proves I have the right displaysize in the above point, as shown by xdpyinfo)

With these settings, my xorg.0.log says (among others):

(**) intel(0): Display dimensions: (260, 195) mm
(**) intel(0): DPI set to (100, 133)

These are the correct settings by the way.
However, when I'm done logging in, xdpyinfo shows resolution 86x86 dots per ince (304x228 millimetres) which is not what I set in xorg.conf, and also not what X reports when booting (see above).

What really confuses me is that xrdb -query reports Xft.dpi to be 96.

So - can anyone shed some light as to why Xft.dpi reports 96 DPI, xdpyinfo reports 86 DPI, while Xorg.0.log repots 100 DPI, and the display *CLEARLY* isn't 100DPI ?

Any insight would be greatly appreciated, as this is driving me nuts.

For arguments sake I have the exact same setup on a different laptop running the exact same -current, and it works flawlessly, so I probably missed some little detail when I did the new laptop, or maybe it's a problem with the intel driver?

Thanks in advance, and thanks for reading

-Y1

Hi,

What resolution are you running at?

I usually calculate the DisplaySize settings using the following formula:

Dimension/DPI x 25.25

For example, for 1024 x 768 resolution:

1024/100dpi = 10.24 x 25.25 = 258.56
768/100dpi = 7.68 x 25.25 = 193.92

That yields DisplaySize 258.56 193.92 for my xorg.conf setting to provide 100 dpi at 1024x768

My xorg.conf with various settings, 100 dpi is not commemnted out at the moment
My screen resolution is 1440 x 900
Using the setting for 100dpi yields the following:
Also, when I used nvidia, I needed to pass an option that told the card not to poll the monitor for settings or else my DisplaySize settings were ignored. I dont know if this applies to you card as well or not. I use ATI now and have forgotten the option.



HTH

Hi, and thanks for answering!

I'm on 1024x768, so the correct settings are 260x195mm (rounded, which is what X does anyway). I changed them to 258.56 193.92 but it makes no difference - the Xorg log still shows the correct setting, but xdpyinfo gives the wrong resolution anyway - maybe I need a special setting for my Intel card to turn stop polling the screen there as well, or maybe there's an Xresources setting hidden somewhere that sets this, overriding the xorg.conf displaysize...

-Y1

Does the desktop environment you use change any of those settings?

One one user it was - thanks for pointing it out (it was set to 96 DPI, which explained the xrdb -query which gave Xft.dpi = 96) setting. However, for the other user it was not.

What I did find out was that by adding
to the Section "Device" of xorg.conf, my DPI has increased from 86 to 96.

I have no clear idea on what exactly NoDCC does though..

The Xorg.0.log still says correctly that the setting is 100DPI with the right display size, but for all users it remains 96DPI when tested with xdpyinfo.

Maybe an additional option needs to be passed to the Intel controller

I'm out of ideas at this point, but as you suggested, it could be a problem with the Intel driver (it seems to be the only difference between the two systems).

This is the option I needed to pass to the nvidia (not nv) driver to use the DisplaySize option:
I have no reason to believe this will work for you, but it might be worth a try.

Hi,

Came across the following and thought of this thread. Not sure whether you got things sorted or not but perhaps the fist option line in the example below is what you might be looking for. It's from a system using your video chip (or at least the driver):
HTH

Haven't seen that Option before - will try as soon as I get back home and report back if it works - thanks much!