Messages in this thread | | | Date | Sat, 15 Jan 2005 11:04:18 +0000 | From | Russell King <> | Subject | Re: How to hang 2.6.9 using serial port and FB console |
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On Sun, Dec 26, 2004 at 04:21:07PM +0000, Karel Kulhavy wrote: > However it is not sending breaks, but rather various characters. As the kernel > seems to be set internally for echo cahracters going into the computer on the > transmit line again, and the characters are echoed by the infrared receiver > during transmission too, a character stream cycles infinitely there. > > However kernel shouldn't hang even if you wired the serial input to an alien > spacecraft.
How do you know if it's the serial that's causing the hang rather than the virtual console subsystem?
Your original description seems to imply that the machine only hung after you switched from VC1 to VC3, and then you found you couldn't switch back to VC1. To me, that sounds virtual console related rather than serial related. Especially if you can reproduce it at this exact point in time every time.
Have you tried sysrq-p or sysrq-t to get a trace/thread info from the kernel?
-- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: 2.6 PCMCIA - http://pcmcia.arm.linux.org.uk/ 2.6 Serial core - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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