On Friday 22 January 2010 16:07:10 Mark Goldberg wrote:
I have an F12 installation that experiences intermittent lockups,
usually at times of heavy usage.
The system just locks up solid, keyboard and mouse are non responsive.
Graphical screen remains
the same as it was when it locked up. Nothing is recorded in the
system logs, and I also have
logging to a remote machine and nothing is sent to there either. If
you attempt to telnet in, you get
the first telnet message with the kernel name but no login prompt and
it times out. Only a hard reset
and reboot gets it back.
Telnet? Why telnet?
I would check for the following:
* ssh from the remote machine --- this checks the extent of lockup. It may
well be just X locking up, while kernel is still alive and well. That would be
the issue with graphics hardware/drivers.
* reproduce the problem with a LiveCD, prefferably different distro --- this
checks for hardware vs. software fault. If for ex. Knoppix locks up too, it's
definitely a hardware issue, independent on the OS in use.
* if it's a hardware issue --- upgrade power supply, downclock the processor,
change the motherboard, remove components from the box one by one until you
find the culprit.
* if it's a Fedora issue --- boot with nomodeset kernel option, disable ACPI,
change graphics drivers, boot older kernel, try to narrow down the app that
triggers the lockup...
HTH, :-)
Marko