From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tony Nugent Date: Fri, 25 May 2001 14:14:38 +0000 Subject: Re: Kernel hang on a smp system with a es1371 sound card Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-sound@vger.kernel.org On Thu May 24 2001 at 16:37, marceln@pion.xs4all.nl wrote: I don't have a specific answer to your question, but this might help... > I had a lot of kernel hangs with an smb system. The sound card > makes a gives a high peep sound and the system doesn't respond > any more. The only thing i can do is press the reset button. Turn on your magic sysrq key and you might then have a way to sanely recover control of your system without a cold reboot. In many cases like this your system may be running fine, but the keyboard may be in raw mode, there are locked/crashed terminal/X/svgalib/io processes, or whatever. Sysrq allows you to recover from raw kbd mode with LeftAlt-PrintScreen-R, and it has several other handy uses like resetting the kernel log levels and so on. LA-SP-K will kill all processes running on the current (virtual) terminal (which might do the trick in your case). To do an emergency reboot, LA-PS-s (sync) then LA-PS-u (remount everything read-only), and finally LA-PS-b (the sequence is s-u-b) for an emergency reboot - and the system will come up again with clean filesystems. But only if the kernel is still alive and kicking. See /usr/src/linux/Documentation/sysrq.txt for the main rave, /sbin/sysctl and /etc/sysctl.conf for how to enable all this. Cheers Tony - To unsubscribe from this list: send the line "unsubscribe linux-sound" in the body of a message to majordomo@vger.kernel.org