"Mikkel L. Ellertson" <mikkel@xxxxxxxxxxxxxxxx> writes: > Jay Cliburn wrote: > > console for debugging kernel problems. Whenever I start minicom on the > > laptop, however, I'm greeted with a permission denied error to > > /dev/ttyS0. > > No problem, I thought -- I'll just gin up a udev rule and set the perms > > to 0666. Sorry; doesn't work. As a matter of fact, it gets worse: > > perms on ttyS0 go to 0600 root:root as a result of my new local rule. > > > > Okay, not an ideal solution, but let's modify 50-udev.rules and set the > > default rule for tty[A-Z]* to MODE="0666". Nope. Now they're *all* > > 0600 root:root. > > > > Here's the rule: > > KERNEL=="ttyS0", NAME="%k", GROUP="uucp", MODE="0666" > configure. I was surprised to discover that FC5 didn't handle the > serial ports. I haven't kept track of which versions do exactly what, but I did see permissions on ttyS0 keep reverting on some recent versions of RH or Fedora. Three changes I've had to make were: /etc/inittab: -------------------------- # NO logins on ttyS0! ### co:12345:respawn:/sbin/agetty ttyS0 9600 vt100-nav /etc/security/console.perms: -------------------------- # Added <serial>=/dev/ttyS[01] ... # Added <console> 0660 <serial> 0660 root.uucp /etc/securetty: -------------------------- # DA removed: ttyS0 -- Donald Arseneau asnd@xxxxxxxxx
