Configuring Video Mode - NEC Express5800/R320c-E4 Maintenance Manual

Chapter 2 Configuring and Upgrading the System
3.

Configuring Video Mode

You cannot use xrandr to change the resolution because the xrandr function is not supported. You cannot
change the resolution and the number of colors from application menu due to hardware specification. Take the
steps below to change resolution and number of colors.
1. Login with the user having root privilege, and open /etc/X11/xorg.conf.
2. Modify the following configuration in xorg.conf.
In the figure below, the resolution is set to 1024x768, refresh rate is set to 70Hz, and the number of
colors is set to 16bpp.
<Changing the numbers of colors>
Change the value indicated by (1) to the number of colors you want (8bpp, 16bpp, or 24bpp).
<Modify the resolution>
Select a combination of resolution and refresh rate among the list shown by (3), enter the value in Modes
shown by (2).
3. If the X Window System is started, select Logout from the system menu to quit X Window System.
4. The mode is switched to the console mode (CUI), start up the X Window System by entering "startx".
Important xorg.conf is a very important file for the X Window System. It is recommended to
make a backup file because corrupting xorg.conf can result in failure to start up the
X Window System in the worst case. When you make a backup file, use a different
file name for the backup since the file name /etc/X11/xorg.conf.backup is used by the
system.
Express5800/R320c-E4, R320c-M4 Maintenance Guide (Linux)
3. Configuring Video Mode
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