powerd and nvidia drivers not playing nicely together (Was: Re: Systems running hot?)

[Bernd Walter]

On Wed, Dec 23, 2009 at 04:44:35PM +0200, Gleb Kurtsou wrote:
> On (21/12/2009 19:18), Doug Barton wrote:
> > b. f. wrote:
> > > On 12/21/09, Doug Barton <dougb at freebsd.org> wrote:
> > >> b. f. wrote:
> > >>>> no X! So I think to myself, what else did I change last night.... oh
> > > 
> > >>> acpi_perf? acpi_throttle? acpi_thermal? acpi_video?
> > >> I haven't done anything special with the acpi stuff. The only thing
> > >> that looks relevant from dmesg is: acpi_tz0: <Thermal Zone> on acpi0
> > >>
> > > 
> > > Yes, but which components show up in 'sysctl -a | grep -ie acpi' ?
> > 
> > It's a long list, but here you go:
> > http://people.freebsd.org/~dougb/acpi-grep.txt
> > 
> > >>> Which nvidia driver?
> > >> The latest.
> > > 
> > > Which video card?
> > 
> > nvidia0: <GeForce Go 7300>
> I had similar problems with GeForce 8400M. GPU temperature could get up
> to 100C in X, which increased CPU temperature in its turn.  I use
> powerd, and had lockups with *_cx_lowest settings. I run amd64, i386 was
> just fine on the same notebook. 

It is not just nvidia.
I'm using two plain old PCI Matrox G400 and whenever I start X with
powerd enabled I have a full freeze within 24 hours.
It doesn't seem to be a problem to start powerd once X is runnning.
Maybe it is something like tuning some delay loop with reduced clock
rate, which then isn't long enough with increased speed.

-- 
B.Walter <bernd at bwct.de> http://www.bwct.de
Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.