On Wed, Sep 12, 2012 at 03:54:30PM +0300, Andriy Gapon wrote: > on 12/09/2012 14:34 Lars Engels said the following: > > On Wed, Aug 22, 2012 at 08:02:12PM +0200, Thomas Steen Rasmussen wrote: > >> > >> -----BEGIN PGP SIGNED MESSAGE----- > >> Hash: SHA1 > >> > >> On 22-08-2012 18:52, Lars Engels wrote: > >>> On Wed, Aug 22, 2012 at 02:47:09PM +0200, Thomas Steen Rasmussen wrote: > >>>> > >>>> On 22-08-2012 11:33, Lars Engels wrote: > >>>>> > >>>>> I have a T61 running 9.1-BETA1 (with PC-BSD). In most cases it is > >>>>> booting fine, but from time to time it hangs at boot time but the last > >>>>> lines are uhub0: ... to uhub4 > >>>>> Is that the same or a different issue? > >>>> Hello, > >>>> > >>>> I have that exact issue on an X301 after upgrading from 9.0 to > >>>> 9-STABLE a little while ago. It feels like it happens mostly when > >>>> rebooting from Windows to FreeBSD (dualboot machine), but I've > >>>> seen it from a cold boot as well. I've never seen it twice in > >>>> a row - turning the machine off and on again (by holding the > >>>> power button down) and it boots normally the next time. > >>>> > >>>> I am willing to test patches or enable extra debugging, or > >>>> help out any other way I can :) > >>> > >>> Have you ever seen that with verbose boot enabled? > >> Hello, > >> > >> No, but I can boot verbosely the next times I boot and see if it comes up ? > > > > Meanwhile I found out what's the cause of it. On 9.x it only hung from > > time to time, but I tried a few weeks old CURRENT and it hung at every > > boot at the same time. > > With enabled verbose boot it looked like this: > > http://bsd-geek.de/FreeBSD/IMAG0190.jpg > > > > Then I removed the AC cable and booted from battery and that worked. So > > it seems to me that some ACPI change in CURRENT made the situation even > > worse. > > > > Could you try to play with different eventtimer settings (preferably in > current) ? > You can use this thread / PR as a guide: > http://thread.gmane.org/gmane.os.freebsd.devel.amd64/14480/focus=14495 > > The place where boot stop looks suspiciously close to the place where timer > interrupts should start driving the system.
Yes, that's it! Setting kern.eventtimer.timer="i8254" let's the Thinkpad boot on CURRENT with the AC cable inserted.
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