Linux on PowerPC FAQ-O-Matic : X Windows :
Why can I only start X as root?
X needs to be run with root privileges to access the graphics hardware. You need to turn on the setuid bit on the X server program to allow normal users to run X. To do this, type the following as root: cd /usr/bin/X11 chmod 4511 Xpmac-6.3 You may need to change Xpmac-6.3 to Xpmac-6.1 or Xmklinux depending on how old your X server is (Xpmac-6.3 is the most current one; it is based on the latest release of X). For more information on file ownership, look at any introductory Unix book or read the man page for chmod(1). Shimpei Yamashita email@example.com@socrates.caltech.edu
|On my YDL Champion Seerver 1.2 installation, I had to turn the setuid bit on for the binary XF68_FBDev, which lives at /usr/X11R6/bin/, for this to work.
|Thanks to Jim Cole for the following additional comments (7/10/00):
"Actually your XF68_FBDev should *not* be setuid. This has thepotential to create some security problems, which may or may not be an issue depending on how your system is used. Use of a setuid server was phased out with the introduction of 3.3.2. There is more info on this subject at http://www.xfree.org/FAQ/#Xwrapper
"You should have a binary named Xwrapper(in /usr/X11R6/bin) that is setuid."
Sure enough, with Xwrapper setuid and XF68_FBDev not, it allows non-root users to startx. Yay!
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