Re: ACPI-CA update patch for review

[YONETANI Tomokazu <qhwt+dfly@xxxxxxxxxx>]

On Sun, Dec 03, 2006 at 10:56:18PM +0100, Victor Balada Diaz wrote:
> On Sun, Dec 03, 2006 at 07:17:52PM +0000, Thomas E. Spanjaard wrote:
> > Victor Balada Diaz wrote:
> > >This laptop doesn't boot without acpi enabled. Hangs after:
> > >ppc0: parallel port not found.
> > >>>That's just after printing
> > >>>kern.seedenable: 0 -> 1
> > >>>load: 0.27 cmd: sysctl 23 [acsem] 0.00u 0.01s 0% 276k
                                 ^^^^^^^
> > >>>load: 0.08 cmd: dd 20 [piperd] 0.00u 0.05s 0% 164k
> > >>That's either in /etc/rc.d/random or /etc/rc.d/initrandom.
> > >Tried booting not using them and so far doesn't hang.
> > 
> > Might be that it can't gather enough entropy; where does it gather 
> > entropy from? Perhaps from static on the (in your case nonexisting) 
> > parallel port?
> 
> Don't know where it gathers the entropy by default, but worked before
> so i guess that it's a bad interaction with ACPI.

Does it stay unresponsive longer in "[acsem]"?  If so, drop in to DDB
and type "trace 23" (where 23 is the number before "[acsem]"), and
let me know a few function names starting with "Acpi*" below
AcpiOsWaitSemaphore().

Thanks.