On Tue, Dec 11, 2007 at 06:50:26PM +0100, strawks wrote: > > I just experienced my first ever system lockup. No mouse, no keyboard > > with an Iceape screen open. > > > I had saved a posting regarding SYSRQ and I tried Alt-Sysrq k then > > Alt-Sysrq i and the Alt-Sysrq b with no response. > > Did you really press those 3 keys at the same time? To see if it works > switch to a console and try it there (Alt-Sysrq-s should print > something). should print something about syncing the disks. > > > In desperation I crashed and rebooted the system. I am using > > linux-image 2.6.21-2-686. When the system came up I entered grep SYSRQ > > /boot/config-$(uname -r) and got the response CONFIG_MAGIC-SYSRQ=y > > > > > > So its there. Either I did something wrong or it doesn't work with the > > problem I encountered. > > Correct me if I'm wrong, but I thought sysrq should work in any case but > hardware problem as it's done directly in the IRQ handler. > I think it's a kernel thing, and while it works in many lockup conditions, obviously it doesn't work in all cases. A
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