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Old 02-11-08, 03:43 PM   #1
hmueller
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Join Date: May 2004
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Default Nvidia driver DPI option

Hi,

I tried different DPI settings like this
Code:
    Option         "UseEdidDpi" "FALSE"
    Option         "DPI" "50 x 50"
or
Code:
    Option         "DPI" "100 x 100"
The resulting font size is always the same. What is wrong with my config, or is the latest Nvidia driver the problem? I would like to have smaller fonts, like I had before (with Fedora Core 5, now I use Fedora 8).

I used NVIDIA-Linux-x86-169.04, NVIDIA-Linux-x86-169.07, NVIDIA-Linux-x86-169.09 (with these I can not switch back to the virtual text console <alt>-<ctrl>-<f1>, get an out of sync message from my Acer AL2021 DFP as other people wrote in the forum) and NVIDIA-Linux-x86-96.43.05 (with the Option "ModeValidation" "NoDFPNativeResolutionCheck", otherwise I can only switch to 1280x1024 on my 1600x1200 panel. Thanks to the guys in this forum for the hints.).

With the "old" Nvidia driver NVIDIA-Linux-x86-1.0-9746 the DPI setting worked as expected. But the driver does not compile any more on my new Fedora 8 / Kernel 2.6.23.14-115.fc8 system

Attached my config and the log. I start the system in the GUI mode (runlevel 5) and login from there. Don't know how to switch to "-logverbose 6" in this case.

Hope someone can help
Tx Holger
Attached Files
File Type: gz xorg.conf.gz (1.2 KB, 289 views)
File Type: gz Xorg.0.log.gz (4.7 KB, 137 views)
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Old 02-11-08, 04:17 PM   #2
xbobmx
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Default Re: Nvidia driver DPI option

Could this be related to https://bugs.freedesktop.org/show_bug.cgi?id=13877 ?
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Old 02-12-08, 09:01 AM   #3
hmueller
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Default Re: Nvidia driver DPI option

Thanks for the hint. I forgot that the X itself could be the source of the problem. Beside the kernel and the NVIDIA driver the X itself changed as well ... I will check this more detailed tonight. Tx.
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Old 02-12-08, 02:15 PM   #4
hmueller
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Default Re: Nvidia driver DPI option

Wow. I figured it out.

Fedoras xorg-x11-xinit-1.0.7-2.fc8.rpm ships a /etc/X11/Xresources with these data:
Code:
! Fix the Xft dpi to 96; this prevents tiny fonts
! or HUGE fonts depending on the screen size.
Xft.dpi: 96
Even xdpyinfo always reported the DPI setting from /etc/X11/xorg.conf (e.g. 50 dpi) and not the /etc/X11/Xresources value:
Code:
screen #0:
  dimensions:    1600x1200 pixels (813x610 millimeters)
  resolution:    50x50 dots per inch
  depths (7):    24, 1, 4, 8, 15, 16, 32
Removing the /etc/X11/Xresources dpi entry and setting the desired value in my /etc/X11/xorg.conf did the trick.

Thanks Forum and I hope I can help someone else with this information.

Cheers Holger
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Old 02-13-08, 02:33 AM   #5
Lithorus
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Default Re: Nvidia driver DPI option

So basically it was due to a Fedora "feature"?
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Old 02-13-08, 02:15 PM   #6
hmueller
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Default Re: Nvidia driver DPI option

Yes. Indeed. The bad news is, that xdpyinfo doesn't show this other DPI setting. It was pure luck that I found this.
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