On Fri, Oct 11, 2013 at 02:06:19PM -0400, Fred Smith wrote:
On Fri, Oct 11, 2013 at 09:41:08AM -0400, Fred Smith wrote:
On Fri, Oct 11, 2013 at 02:50:14AM -0700, John Doe wrote:
From: Fred Smith fredex@fcshome.stoneham.ma.us
I rebooted a while ago (and in between the down and up, I installed Fedora 20 Beta on a USB hard drive, making sure it wouldn't mess with my Centos system). The install went fine, but afterwards, when I reboot Centos, it comes up with a black screen and a clock as the mouse cursor (small clock).
chmod a+rw /dev/null chmod a+rw /dev/urandom chmod a+rw /dev/zero chmod a+rw /dev/full chmod a+rw /dev/random
Can anyone suggest an accurate way to have the system fix all the permissions in /dev? some arcane options on rpm, perhaps?
Nothing at all in the logs...?
Nothing I can see in the logs looks particularly damning.
Global check: rpm -qVa
running that right now, will post again if anything interesting turns up.
Maybe check udev confs...?
I was thinking of that, but the amount I know aobut udev wouldn't cover the head of a pin. Open to suggestions, though.
Looking in /lib/udev/rules.d/50-udev-default.rules I see:
KERNEL=="ptmx", GROUP="tty", MODE="0666" KERNEL=="null|zero|full|random|urandom", MODE="0666"
so if I understand them right, /dev/ptmx, /dev/null, /dev/zero, /dev/full, /dev/random, and /dev/urandom should all come up as 'rw' for all users after a system boot, but they don't. I reboot and they all come up as 0644, crw-rw----. grepping for "null" in /lib/udev finds only that single entry in all of the files, as does "ptmx".
So, I wonder if something is preventing this file from being run (which seems unlikely, given that it contains a ton of rules which would all be skipped). I note that /etc/udev/rules.d contains a rules file with exactly the same name (which sets up some firewire stuff) and wonder if that's a problem,... anyone know?
sigh. the problem, had this been a car, could have been diagnosed as: "There's a loose nut behind the wheel." I.e., me. it's exactly due to the duplicate udev rules filenames, one in /etc/udev/rules.d and the other in lib/udev/rules.d. Self-inflicted damage. PROBLEM SOLVED.