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2013 Mar 04
3
network connectivity lost after reboot/upgrade
I upgraded one of my old machines running 5.x to the latest kernel (from
308.24.1 to 348.1.1).
After rebooting network connectivity was gone. I rebooted with the old
kernel, I also tried the one before it (308.20.1) still no luck. So I
assume it's got nothing to do with the kernel or even CentOS. But a
hardware failure seems also unlikely, see below.
ethtool shows the link as up and if I
2009 Feb 26
42
Need to test serial port connection
I recently bought a new UPS, and I''m attempting to use nut to monitor it.
Following setup instructions everything seemed to go well until it came to
testing the connection, which failed.
There is just one serial connector on the computer, so I set it to
monitor /dev/ttyS0. Either that is wrong, or communication is failing.
I''ve been told to try minicom to monitor it,