Console wedged under 2.1.129

George (greerga@nidhogg.ham.muohio.edu)
Wed, 25 Nov 1998 02:08:02 -0500 (EST)


Keyboard doesn't work except for ALT+SysRQ because the screen blanked and I
could bang away on the keyboard all I wanted. ALT+SysRQ+S woke it up
though. I can't switch terminals, type, or scrollback.

Mouse (gpm, serial logitech) was also dead until I restarted GPM. (Funny,
I never killed it...) X was running but unused in 30 minutes.

'switchto' goes:

open("/dev/console", O_WRONLY) = 3
ioctl(3, VT_ACTIVATE, 0x5) = 0
ioctl(3, VT_WAITACTIVE

and sits there.

The easiest way to trigger it seems to have high loads and have a process
or three doing nothing but spewing text output onto the screen as you
switch terminals and work. Program in question I was using was a
multi-threaded application set in debug mode to see what races it had.

I'm currently telnet'd in through an Ethernet connection and writing this
over a PPP line so the serial stuff works. Keyboard works as far as
ALT+SysRQ, but that's all.

Tyan Tomcat IV, 2xPentium233MMX, 2.1.129 SMP, no framebuffer, standard VGA
console on a Cirrus Logic GD 5430. Nothing is in the D state though.

I've hit this same problem with 2.0.33 a while ago. Any suggestions? The
machine is still running away normally and I can do active debugging to
figure anything out...

-George

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