Date: Thu, 2 Apr 2009 08:54:42 -0700 From: Daniel Duerr <dd@gizmocreative.com> To: Pierre-Luc Drouin <pldrouin@pldrouin.net> Cc: freebsd-acpi@freebsd.org Subject: Re: Wrong dev.cpu.0.freq_levels values Message-ID: <9EC2C57E-1BAA-4023-8A86-EFCB706D95FE@gizmocreative.com> In-Reply-To: <49D4D0EA.1050108@pldrouin.net> References: <20090402033543.43DDD1CC0B@ptavv.es.net> <200904020908.00723.jhb@freebsd.org> <49D4D0EA.1050108@pldrouin.net>
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For what it's worth, I recently reported a similar bug with est where the top-most frequency of my CPU is less than it should be. In my case, cpufreq *is not* compiled into the kernel and is instead loaded as a driver at boot. I'm using a 1.8GHz dual core Pentium from a couple years ago. On Apr 2, 2009, at 7:51 AM, Pierre-Luc Drouin wrote: > John Baldwin wrote: >> On Wednesday 01 April 2009 11:35:43 pm Kevin Oberman wrote: >> >>>> Date: Wed, 01 Apr 2009 23:16:13 -0400 >>>> From: Pierre-Luc Drouin <pldrouin@pldrouin.net> >>>> Sender: owner-freebsd-acpi@freebsd.org >>>> >>>> I tried disabling both p4tcc and acpi_throttle by putting the >>>> following in /boot/device.hints: >>>> hint.p4tcc.0.disabled="1" >>>> hint.acpi_throttle.0.disabled="1" >>>> >>>> It reduced the number of levels, but I still don't have a level >>>> 2000 as I used to get: >>>> dev.cpu.0.freq: 1500 >>>> dev.cpu.0.freq_levels: 1500/-1 1200/-1 1000/-1 800/-1 600/-1 >>>> dev.est.0.%desc: Enhanced SpeedStep Frequency Control >>>> dev.est.0.freq_settings: 1500/-1 1200/-1 1000/-1 800/-1 600/-1 >>>> >>>> Pierre-Luc Drouin >>>> >>>> Nate Lawson wrote: >>>> >>>>> Pierre-Luc Drouin wrote: >>>>> >>>>>> Hello, >>>>>> >>>>>> I have noticed that FreeBSD gets the wrong CPU frequency levels >>>>>> for my >>>>>> Pentium M 2GHz. It used to work correctly with older versions of >>>>>> FreeBSD, but I noticed that this was not working properly when I >>>>>> installed 7.1 and this is still not working with -stable: >>>>>> >>>>>> >>>>> >>>>>> dev.cpu.0.freq: 1500 >>>>>> dev.cpu.0.freq_levels: 1500/-1 1312/-1 1200/-1 1050/-1 1000/-1 >>>>>> 875/-1 >>>>>> 800/-1 700/-1 600/-1 525/-1 450/-1 375/-1 300/-1 225/-1 150/-1 >>>>>> 75/-1 >>>>>> dev.est.0.%desc: Enhanced SpeedStep Frequency Control >>>>>> dev.est.0.freq_settings: 1500/-1 1200/-1 1000/-1 800/-1 600/-1 >>>>>> >>>>>> Is there a way to fix this? >>>>>> >>>>> There's nothing wrong. You just got more levels using p4tcc >>>>> (another >>>>> cpufreq device). So use it as-is, or disable the p4tcc driver and >>>>> acpi_throttle drivers. >>>>> >>>>> >>> There is a problem, of course. I had the same issue with my 2GHz >>> Pentium >>> M. It was easy to fix, but totally counter-intuitive. >>> >>> Build your kernel without "device cpufreq" and it will all work >>> fine. Here is what I see without CPUFREQ: >>> dev.cpu.0.freq_levels: 2000/27000 1750/23625 1600/22600 1400/19775 >> 1333/19666 1166/17207 1066/16733 932/14641 800/13800 700/12075 >> 600/10350 500/8625 400/6900 300/5175 200/3450 100/1725 >> >> Hmm, that means one of the cpufreq drivers is busted I think. Can >> you try disabling all of them to see which one is the problem (est >> perhaps?) Also, can you show the 'devinfo' output for your cpu0 >> device (and its child devices) in the cpufreq and non-cpufreq cases? >> >> > est0 seems to be the problem. When I have the cpufreq driver in my > kernel, that I disable est0 and that I leave p4tcc0 and > acpi_throttle0 enabled, the output from sysctl is right. If I > disable p4tcc0 and acpi_throttle0 and that I leave est0 enabled, the > highest level is 1500 rather than 2000. Here is the output from > devinfo that concerns cpu0: > > cpu0 pnpinfo _HID=none _UID=0 at handle=\_PR_.CPU0 > ACPI I/O ports: > 0x1014 > 0x1015 > 0x1016 > est0 > p4tcc0 > acpi_perf0 > acpi_throttle0 > cpufreq0 > > Pierre-Luc Drouin > _______________________________________________ > freebsd-acpi@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-acpi > To unsubscribe, send any mail to "freebsd-acpi- > unsubscribe@freebsd.org" -- daniel duerr | president | gizmo creative dd@gizmocreative.com | +1 (831) 621-1710 x103
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