On Tue, Jul 24, 2018 at 12:33:04PM -0700, Samuel Sieb wrote:
On 07/24/2018 12:13 PM, Joe Zeff wrote:
On 07/24/2018 11:55 AM, Samuel Sieb wrote:
Just try running "reboot". If that doesn't work, then run "sync"
and forcefully power off. This should be a very rare occurrence,
you probably won't see it again.
You may also want to activate the Magic Sysrq key
+1
(https://aplawrence.com/Words2005/2005_04_13.html)
the explanation for the 'l' command described there doesn't seem to be right
(anymore?).
I'd recommend the kernel page for the purpose:
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/plain/Documentation/sysrq.txt?id=refs/tags/v4.9.5
And I always try to have a print-out on paper around of that page ... :)
A nice Fedora page on how to enable sysrq keys:
https://fedoraproject.org/wiki/QA/Sysrq#How_do_I_enable_the_magic_SysRq_key.3F
Once enabled here's how I run the sysrq commands:
1: press <alt>, keep holding
2: press both <fn> and <print>, release both
3: press the magic key, release it
4: release <alt>
Note the <fn> key: this part of the key combo doesn't show up in the
kernel sysrq page for the sysrq key proper - but usage of it seems to
be the only way here to run the sysrq helper.
YMMV.
He said he was still able to run commands, so it wasn't hung.
He didn't see what he was typing, just the resulting output from
it. In that case sysrq commands might be more safe ..
Regards,
Wolfgang
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