Date: Sun, 20 Aug 2006 22:50:07 -0700 From: Nate Lawson <nate@root.org> To: Tim Dettloff <acpi.dettloff@gmail.com> Cc: freebsd-acpi@freebsd.org Subject: Re: Powerd makes computer hang Message-ID: <44E9498F.8030208@root.org> In-Reply-To: <f67067e80608192300g7474bc76nc1c87b523bd807ea@mail.gmail.com> References: <f67067e80608192300g7474bc76nc1c87b523bd807ea@mail.gmail.com>
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Tim Dettloff wrote: > Hi > > I have installed FreeBSD 6.1-RELEASE on my Compaq Presario 2656AU > laptop, but it occasionally hangs. I traced the problem to powerd so I > made a script that kept changing the clock rate by setting the sysctl > dev.cpu.0.freq. This script normally makes the computer hang within 10 > seconds or so. > > I then added a few printf's here and there which have let me to > believe that the problem is somewhere in > sys/dev/acpica/acpi_throttle.c, acpi_thr_set > It only prints the first letter of a printf just after the line > THR_SET_REG(sc->cpu_p_cnt, p_cnt); > > The problem happens with and without cpufreq.ko loaded. The kernel is > GENERIC. > > Any Ideas? dmesg would be a good start. Is there some cpufreq driver running besides acpi_throttle? Add hint.acpi_throttle.0.disabled="1" in loader.conf, reboot, and then retry your test. My guess is acpi_throttle is just a wrapper around p4-tcc on your system. -- Nate
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