On Friday 29 January 2010 18:04:22 you wrote:
> On 01/28/2010 07:09 PM, Marko Vojinovic wrote:
> > On Thursday 28 January 2010 18:36:43 Jim wrote:
> >> Noveau is not changing the xorg.conf, it is hal or something like that
> >> in Fedora.
> >
> > Nothing should be changing xorg.conf just out of the blue. And the
> > settings in there should be honored by X.
> >
> > Couple of stupid questions: are you sure that you have saved your changes
> > to the file after editing? Are you sure you are editing the right file?
> >
> > Maybe it is a ownership/permissions problem. Post the output of
> >
> > ls -l /etc/X11/xorg.conf
> >
> > Also, maybe there is some error in the file itself, and X falls back to
> > autoconfiguring. Post the output of
> >
> > cat /etc/X11/xorg.conf
> >
> > Maybe for some odd reason the xorg.conf file is not being used at all.
> > Post the output of
> >
> > cat /var/log/Xorg.0.log
> >
> > With all this info I guess we'll have a better idea on what is going on.
>
> $ ls -l /etc/X11/xorg.conf
> -rw-r--r--. 1 root root 1451 2010-01-28 12:22 /etc/X11/xorg.conf
Ok, the permissions look fine.
> [tom@gray ~]$ cat /etc/X11/xorg.conf
> # nvidia-xconfig: X configuration file generated by nvidia-xconfig
> # nvidia-xconfig: version 1.0 (mockbuild@) Sun Nov 22 21:04:19 EST 2009
>
> Section "ServerLayout"
> Identifier "Layout0"
> Screen 0 "Screen0"
> InputDevice "Keyboard0" "CoreKeyboard"
> InputDevice "Mouse0" "CorePointer"
> EndSection
>
> Section "Files"
> FontPath "/usr/share/fonts/default/Type1"
> EndSection
>
> Section "InputDevice"
> # generated from default
> Identifier "Mouse0"
> Driver "mouse"
> Option "Protocol" "auto"
> Option "Device" "/dev/input/mice"
> Option "Emulate3Buttons" "no"
> Option "ZAxisMapping" "4 5"
> EndSection
>
> Section "InputDevice"
> # generated from data in "/etc/sysconfig/keyboard"
> Identifier "Keyboard0"
> Driver "kbd"
> Option "XkbLayout" "us"
> Option "XkbModel" "pc105"
> EndSection
>
> Section "Monitor"
> Identifier "Monitor0"
> VendorName "Unknown"
> ModelName "Unknown"
> HorizSync 28.0 - 33.0
> VertRefresh 43.0 - 72.0
> Option "DPMS"
> EndSection
>
> Section "Device"
> Identifier "Device0"
> Driver "nvidia"
> VendorName "NVIDIA Corporation"
> EndSection
>
> Section "Screen"
> Identifier "Screen0"
> Device "Device0"
> Monitor "Monitor0"
> DefaultDepth 24
> SubSection "Display"
> Depth 24
Ok, in this place here you need to add the line:
Modes "1024x768"
> EndSubSection
> EndSection
Add it in precisely the above place (inside the "Display" subsection), save
the xorg.conf file and do a "cat /etc/X11/xorg.conf" again to make sure that
the added line is now really there.
Given that only root has permissions to write to the file, only a very limited
number of programs will be able to rewrite it. This will reduce the number of
possible suspects. :-)
Next, log out and log back in, *without* rebooting the computer. This will
restart only X and nothing else, and now the resolution should be 1024x768.
See below how to check. If it isn't, do a "cat /etc/X11/xorg.conf" to verify
that the "Modes" line is still there.
If this went well, do a full reboot and see if the new resolution sticks.
Check the "cat /etc..." thing again to see if anything has mangled the
xorg.conf.
Report your findings back to us. :-)
> [tom@gray ~]$ cat /var/log/Xorg.0.log
>
> X.Org X Server 1.7.4
> Release Date: 2010-01-08
> X Protocol Version 11, Revision 0
> Build Operating System: x86-01 2.6.18-164.6.1.el5
> Current Operating System: Linux gray 2.6.31.12-174.2.3.fc12.x86_64 #1
[I'm snipping irrelevant parts throughout the log]
> (==) Using config file: "/etc/X11/xorg.conf"
This is ok, X actually uses xorg.conf.
> (==) Jan 28 16:58:57 NVIDIA(0): No modes were requested; the default
> mode "nvidia-auto-select"
> (==) Jan 28 16:58:57 NVIDIA(0): will be used as the requested mode.
There was no "Modes" line in xorg.conf, so nvidia driver used the default
auto-select option to choose your resolution.
> (II) Jan 28 16:58:57 NVIDIA(0): Virtual screen size determined to be
> 1600 x 900
> (--) Jan 28 16:58:57 NVIDIA(0): DPI set to (92, 91); computed from
> "UseEdidDpi" X config
> (--) Jan 28 16:58:57 NVIDIA(0): option
[snip]
> (II) Jan 28 16:59:57 NVIDIA(0): Setting mode "1152x864"
This is the resolution it chose, using the EDID data sent from the monitor. I
guess it picked the largest resolution available.
So, once you edit the /etc/X11/xorg.conf, add the "Modes" line, log out/in,
you can check the actual resolution used by (a) visual inspection of the
monitor, and (b) by reading the log and checking for the info like the above.
Somewhere you should be able to find the line that contains something like
NVIDIA(0): Setting mode "1024x768"
If you find this in the log, then it definitely works as expected.
Do a "cat /var/log/Xorg.0.log" again, and read it through, or post it again
here.
HTH, :-)
Marko
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