Red Hat Bugzilla – Bug 389341
Problem with X11 DPI set too high by Fedora8
Last modified: 2009-01-09 02:27:16 EST
Description of problem:
I am was installing FC8 on laptop IBM T60 (ATI Technologies Inc Radeon Mobility
X1400, 1400x1050) and I have a problem:
Many fonts appear too big because for some reason my DPI is set to 122x126 dots
per inch, instead of 96x96.
I've tried editing /etc/X11/xorg.conf like some threads but there is no
"monitor" section so I tried chose other the Generic Monitor "LCD Panel
1400x1050" and reboot. So problem still the same. Then I try to add "DisplaySize
370 277" in /etc/X11/xorg.conf threads "monitor" and reboot. So problem still
Even /etc/X11/Xresources has the line
Until editing xorg.conf
xdpyinfo | grep -B1 dot
dimensions: 1400x1050 pixels (291x212 millimeters)
resolution: 122x126 dots per inch
xdpyinfo | grep -B1 dot
dimensions: 1400x1050 pixels (370x278 millimeters)
resolution: 96x96 dots per inch
ModelName "LCD Panel 1400x1050"
DisplaySize 370 277
HorizSync 31.5 - 65.5
VertRefresh 56.0 - 65.0
Version-Release number of selected component (if applicable):
Linux localhost.localdomain 126.96.36.199-49.fc8 #1 SMP Thu Nov 8 21:41:26 EST 2007
i686 i686 i386 GNU/Linux
Steps to Reproduce:
1.installing FC8 on laptop IBM T60 (ATI Technologies Inc Radeon Mobility X1400,
2. Choose display resolution 1400x1050
Created attachment 262871 [details]
Created attachment 262891 [details]
Many windows as big (display lock windows and other).
Created attachment 262901 [details]
Created attachment 262911 [details]
I am try to install KDE and problem is not reproducing. The problem is
reproducing only with Gnome.
I found a workaround:
In xorg.conf I remove string DisplaySize 370 278 ->restart X -> chose is gnome
settings (gnome-appearance-properties) 96dpi -> save -> reboot -> add in
xorg.conf DisplaySize 370 278.
On my screen:
[fkooman@dilithium ~]$ xdpyinfo | grep -B1 dot
dimensions: 1440x900 pixels (303x190 millimeters)
resolution: 121x120 dots per inch
[fkooman@dilithium ~]$ cat /var/log/Xorg.0.log | grep -i dpi
(==) intel(0): DPI set to (100, 100)
I didn't tweak anything in xorg.conf for the DPI settings. It seems to be OK in
gdm, but not in GNOME. Setting the dpi at the font selection things in GNOME to
100 makes it look really nice. 96 is also an option, but 100 seems nicer. So it
looks like the Intel driver does a sane thing by "setting" it to 100, no idea
why xdpyinfo shows 121x120 though.
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