help: sysrq and X

From: Eyal Lebedinsky
Date: Sun Nov 21 2004 - 18:22:21 EST


I am trying to diagnose a hard lockup. The only way I can reproduce it is
with mythtv. When the system locks up (no mouse, no activity in X, no message
logged) I can use magic sysrq, but I cannot see the output.

Using 'r' does not enable console switching. However 'b' will boot the
system, and I hope 's' and 'u' did something blindly.

I there a way to regain a text console in order to inspect the kernel?

I can connect a machine to the serial port if this will help - does
sysrq work though the serial port? Which software should I use on
the serial port (on the 'other' machine) for this purpose then?

Thanks

--
Eyal Lebedinsky (eyal@xxxxxxxxxxxxxx) <http://samba.org/eyal/>
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