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On Dienstag, 14. Oktober 2008, Daniel da Veiga wrote: |
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> On Sun, Oct 12, 2008 at 07:08, Alexander Puchmayr |
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> |
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> <alexander.puchmayr@×××××××.at> wrote: |
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> > Hi there! |
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> > |
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> > MY gentoo system (an amd64@4400+, 2GB ram, nforce4-chipset) worked fine |
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> > for nearly two years, but now it frequently freezes, sometimes (not |
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> > always) scrollock and capslock LED blinking). |
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> > |
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> > Since I'm using the box as desktop, I have only a frozen X-server and |
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> > no possibility to switch to console (maybe there's some hint whats |
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> > happened?). |
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> > |
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> > How do I find out what happened, why it crashed? Modern systems have |
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> > MCE-logs, but how do I read it in this case? After reboot, all |
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> > information seems to be gone since mcelog is always empty. |
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> > |
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> > I assume there's some problem with some hardware, I already tested RAM |
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> > with memtest86, but no errors. |
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> |
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> I had one of this freezes today. |
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> Simply killed X using CTRL+SYSREQ+K and got back a console with error |
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> messages. |
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> |
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> Have you tried the SYSREQ keys? |
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|
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How does this work? I've tried it but I didn't get this working at all. |
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AFAIK, first step is to compile the CONFIG_MAGIC_SYSRQ into the kernel. |
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Then, make sure there's a "1" in /proc/sys/kernel/sysrq; well it is. |
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/usr/src/linux/Documentation/sysrq.txt says press "ALT-SysRq-<command key>", |
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I've tried it out with SysRq=printScreen and cmd='h' for help, but nothing |
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happens, even under normal conditions. What did I make wrong? |
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|
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Alex |
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