On Wed Jun  5 16:00:04 2024 Theo de Raadt wrote:
> Stuart Henderson <stu@spacehopper.org> wrote:
> > On 2024/06/05 04:42, Crystal Kolipe wrote:
> > > On Wed, Jun 05, 2024 at 09:06:41AM +0200, Walter Alejandro Iglesias wrote:
> > > > Running halt -p the machine powers off perfectly but running reboot at
> > > > the last moment in the halt process (screen already turned off) the
> > > > machine does not turn off, it hangs indefinitely, I have to press the
> > > > power button manually to turn it off.
> > > 
> > > I've also seen this behaviour from time to time on a Thinkpad X260 so the
> > > underlying problem is probably not specific to your machine.
> > 
> > X260 has always been problematic with reboots, not 100% of the time (in
> > particular a reboot shortly after boot seems more likely to work) but
> > very often. The only thing I've seen that improved things there is
> > kettenis' "EFI runtime services on amd64" diff.
>
> On two machines with such a problem I've seen that if I disable the
> umb(4) in the BIOS, it reboots fine.
>

I've tried changing settings on the bios, no effect.

In any case, your advice does not apply to this case, I have been using
this machine for many years without problems, in fact I bought it
*especially* to be able to use OpenBSD, since until then I had not been
able to run OpenBSD on any hardware.

I have had little to no success lately on these lists on many issues
that I have put a lot of time and effort into, I hope to be heard this
time. :-)

-- 
Walter