Hi Pete,
I'm dont know USB at all - can you find out where the problem starts happening?
Unplugging the usb stick: machine deadlocks, plugging the stick in while the kernel is up and running: machine deadlocks. Machine does not deadlock when I plug the stick in _before_ I boot up linux.
Alt-SysRq-T is needed. Usually it's captured with a serial console or netconsole. This is most probably a result of exclusive_access. A process took that semaphore and scheduled somewhere. If so, we have to know what process it was and what it was doing.
that's the problem. The machine is _dead_. Nothing works, sysrq is dead too. After I saw that even sysrq is dead, I applied kdb and tried to capture it, but even kdb is not usable because the kernel is completely locked up. I'm out of ideas, like Marcelo, I don't know USB at all.
I even tried an UP kernel (compiled as UP), even nosmp boot parameter (it might be an SMP problem) but it isn't, even UP locks up hard. I also disabled ACPI, apic and friends, same problem. It's also not a problem of my USB Controllers nor USB 1.1 or 2.0. Doesn't matter where I plug the stick in.
ciao, Marc
------------------------------------------------------- The SF.Net email is sponsored by: Beat the post-holiday blues Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek. It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
