I’ve installed X11 under FreeBSD operating systems using ports and rebooted the computer and I’m getting the following error:

acd0: FAILURE – unknown CMD (0x03) ILLEGAL REQUEST ASC=0x20 ascq = 0x00

How do I fix this problem?


Q. How do I change default desktop / display manager under CentOS or Fedora Linux? I’d like to change default GNOME to KDE as desktop manager for all users. A. There is a configuration file called /etc/sysconfig/desktop. This file defines default display manager and desktop name. Display manager can be any one of the following: […]

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Q. I’m using Ubuntu Linux and I’d like to create or modify keyboard shortcuts in Gnome desktop system? How do I do it? A. You need to use GConf-Editor or gnome keyboard shortcut tool. GConf-Editor is a tool used for editing the GConf configuration database. It might be useful when the proper configuration utility for […]


This beep sound is annoying under Linux, how do I disable it forever under Debian / Fedora / RHEL / Red Hat / Ubuntu Linux?