[CentOS] X/Display resolution configuration

Marko Vojinovic vvmarko at gmail.com
Mon Oct 8 17:19:39 EDT 2012


On Monday, 8. October 2012. 15.54.19 Mike Watson wrote:
> Here's the output of "xrandr."  My Xorg.0.log does not exist.

That is very very weird. The log file should exist. Here is one of my machines:

[root at bojan ~]# ll /var/log/Xorg.0.log
-rw-r--r--. 1 root root 31880 Sep 21 14:18 /var/log/Xorg.0.log
[root at bojan ~]# uname -a
Linux bojan 2.6.32-279.5.2.el6.x86_64 #1 SMP Fri Aug 24 01:07:11 UTC 2012 
x86_64 x86_64 x86_64 GNU/Linux

Note that "0" in the filename is the digit zero, not the capital letter O. 
Maybe the confusion is there.
 
> Screen 0: minimum 320 x 200, current 1600 x 900, maximum 8192 x 8192
> VGA1 connected 1600x900+0+0 (normal left inverted right x axis y axis)
> 440mm x 250mm
>     1600x900       60.0*+
>     1280x1024      75.0     60.0
>     1280x960       60.0
>     1280x800       59.8
>     1152x864       75.0
>     1280x720       60.0
>     1024x768       75.1     70.1     60.0
>     832x624        74.6
>     800x600        72.2     75.0     60.3     56.2
>     640x480        72.8     75.0     66.7     60.0
>     720x400        70.1
> HDMI1 disconnected (normal left inverted right x axis y axis)
> DP1 disconnected (normal left inverted right x axis y axis)

This looks perfectly normal. The 1600x900 resolution is the preferred default 
and active.
 
> My system will run the 1600x900       60.0*+ selection if I choose it at
> login. Otherwise it reverts to a lower selection 1280x1024.

What do you mean by "choose at login"? How exactly are you logging in and 
where are you offered this choice?

HTH, :-)
Marko





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