B.1.3 X Problems

Many questions revolve around X. Here are some general tips for things to try if you are having difficulties setting up the X Window system:

• For mouse problems, run XF86Setup and try the PS/2, Microsoft, MouseSystems, and Logitech options. Most mice will fit under one of these. Also, the device for your mouse is /dev/psaux for PS/2 mice and a serial port such as /dev/ttyS0 for serial mice.
• If you don’t know what video chipset you have, try running SuperProbe; it can often figure this out for you.
• If your screen doesn’t have a lot of color, try selecting a different video card or tell X how much video RAM you have.
• If your screen goes blank or has unreadable text when you start X, you probably selected an incorrect refresh rate. Go back to XF86Setup or xf86config and double-check those settings.
• xvidtune can help if the image on the screen is shifted too far to the left or right, is too high or low, or is too narrow or wide.
• xdpyinfo can give information about a running X session.
• XF86Setup can set your default color depth.
• You can select your default window manager by editing /etc/X11/window-managers.
• /var/log/xdm-errors can contain useful information if you are having trouble getting xdm to start properly.

As a final reminder, try the XF86Setup or xf86config tools for configuring or reconfiguring X for your hardware.