Re: Livelock on recent current

On Wed, Sep 9, 2020 at 3:01 AM Thomas Mueller <mueller6722_at_twc.com> wrote:

> > I am seeing a problem since I moved to current on my laptop this week.
> It's
> > odd as it is linked to the keyboard. As long as the keyboard is active,
> > everything is fine, but if the keyboard is not used, after a few minutes,
> > it locks up and gets very hot. The system may be busy or idle. The system
> > seems completely locked. It does not respond in the network and the
> > display, X or just vt is frozen. The only factor is use of the keyboard.
>
> > I'm not sure what information I might collect.
>
> > The system is a ThinkPad L15 with 4GN of DRAMM (more on order) .
> > FreeBSD 13.0-CURRENT #2 r365481M: Tue Sep  8 20:16:02 PDT 2020
> >     root_at_ptavv:/usr/obj/usr/src/amd64.amd64/sys/GENERIC-NODEBUG amd64
> > FreeBSD ptavv 13.0-CURRENT FreeBSD 13.0-CURRENT #2 r365481M: Tue Sep  8
> 20:16:02 PDT 2020
> > root_at_ptavv:/usr/obj/usr/src/amd64.amd64/sys/GENERIC-NODEBUG
>  amd64
> > Intel(R) Core(TM) i5-10210U CPU (Crystal Lake)
>
> > Kevin Oberman, Part time kid herder and retired Network Engineer
>
> Overheating, maybe?
>
> I can see CPU temperature with "envstat" (NetBSD) or
> sysctl -a | grep "temperature" (FreeBSD) :
> don't know how Linux does it.
>
> Is there any way you could run
> sysctl -a | grep "temperature"
> at one- or two-minute intervals, perhaps on a different virtual terminal?
>
> I've heard of laptops getting hot, but that was not specifically connected
> to keyboard inactivity.
>
> Tom
>
On FreeBSD on Intel, just load coretemp.ko and it's in
dev.cpu.?.temperature, where ? is the CPU. When running my desktop, I have
it continuously displayed with the gkrellm2 system display. Since it will
fail when the system is idle, I don't think it gets hot until after the
lock-up, but I'll confirm it when I get back to that system later today.
--
Kevin Oberman, Part time kid herder and retired Network Engineer
E-mail: rkoberman_at_gmail.com
PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683