Adding FreeBSD stable to see if they can provide some insight on this since it affects everything from 11 and beyond
> > On Sat, Nov 26, 2016 at 7:01 AM, Bertram Scharpf <[email protected] > > wrote: > >> On Friday, 25. Nov 2016, 20:06:55 -0800, Jack L. wrote: >> > On Fri, Nov 25, 2016 at 7:32 PM, Bertram Scharpf < >> [email protected]> >> > wrote: >> > >> > > On Friday, 25. Nov 2016, 18:31:24 -0800, Jack L. wrote: >> > > > >> > I have an old single core AMD Turion ML-37 laptop that has >> nothing >> > > > >> > installed. When I boot it up, the moment it displays login:, >> it hangs >> > > > >> > until i press some random keys. At shutdown, it will hang >> until I >> > > > >> > press keys and it will not move onto the next line of shutdown >> until >> > > > >> > I keep pressing keys. >> > > > >> > >> > > > >> > If I cat /dev/random > ./dev/null while using the laptop, it >> works >> > > > >> > fine but when nothing is happening, the laptop hangs. Any >> ideas? It's >> > > > >> > running 11.0-STABLE >> > > > > >> > > > > Any ideas on why the laptop would have that behavior in 11? It >> didn't hang >> > > > > at all in 10.3-STABLE >> > > > > >> > > > I just installed 12-CURRENT on the laptop and it also hangs even at >> > > > install/boot/shutdown until I hit keys, then it will move as long >> as I >> > > > continue to hit keys. I also found that if I ping the laptop, it >> will >> > > > respond but in between pings, it will hang. Using FreeBSD 10.3, it >> works >> > > > perfectly fine without any random keypresses. Any ideas? >> > > >> > > I'm convinced this behaviour it worth being analysed. >> > > >> > > Can you gain any knowlegde by calling cat through truss? >> > >> > How should I run that? >> >> Sorry, that was probably too fast. >> >> You could run one of those: >> >> # truss cat /dev/random >/dev/null >> # truss dd if=/dev/random of=/dev/null bs=512 count=3 >> >> But they will show just a series of read-write calls until a >> read will hang. The detain presumably occurs in the random >> device. That's kernel stuff. Does anybody have a hint how to >> debug that without influencing the behaviour in question? >> > > So truss cat /dev/random >/dev/null > will keep going and going and going and going > truss dd if=/dev/random of=/dev/null bs=512 count=3 > sits there and hangs with no activity until i hit a key, then the dd > happens. > > >> Bertram >> >> >> -- >> Bertram Scharpf >> Stuttgart, Deutschland/Germany >> http://www.bertram-scharpf.de >> _______________________________________________ >> [email protected] mailing list >> https://lists.freebsd.org/mailman/listinfo/freebsd-questions >> To unsubscribe, send any mail to "freebsd-questions-unsubscribe >> @freebsd.org" >> > > _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[email protected]"
