Date: Tue, 15 Dec 2015 23:57:28 +0100 From: Bengt Ahlgren <bengta@sics.se> To: Ian Smith <smithi@nimnet.asn.au> Cc: Johannes Dieterich <dieterich.joh@gmail.com>, freebsd-acpi@freebsd.org Subject: Re: AMD A12-8800B ACPI questions (turbo mode, temp zones) Message-ID: <uh78u4vwc9z.fsf@P142s.sics.se> In-Reply-To: <20151216005408.B61100@sola.nimnet.asn.au> (Ian Smith's message of "Wed, 16 Dec 2015 01:15:48 %2B1100 (EST)") References: <CABquGzUkHvGTqe1-hswMnnmjbf1qgqKYEEEH3GV3VmzvUeTTBA@mail.gmail.com> <20151216005408.B61100@sola.nimnet.asn.au>
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Ian Smith <smithi@nimnet.asn.au> writes: > On Sun, 13 Dec 2015 19:53:52 -0500, Johannes Dieterich wrote: > > Dear list, > > > > I am running CURRENT on an HP elitebook 745 G3 which comes with a AMD > > A12-8800B CPU. All in all, it runs very well with just a few nits to > > pick. Two of them are ACPI related. > > > > 1) there are 5 thermal zones defined out of which only two provide > > reasonable numbers it seems: > > > > hw.acpi.thermal.tz4.temperature: 34.1C > > hw.acpi.thermal.tz3.temperature: 0.1C > > hw.acpi.thermal.tz2.temperature: 0.1C > > hw.acpi.thermal.tz1.temperature: 0.1C > > hw.acpi.thermal.tz0.temperature: 56.1C > > > > my gut feeling is that tz0-tz3 may be the CPU cores and tz4 would be > > the GPU (which does not work in BSD ATM, hence consistently lower > > temp). I guess this is not a big deal (everything works) but I still > > wonder how to fix it. > > Not sure if anything needs fixing, but I only have Intel gear these > days and am not up on the AMD side of things. However, please show: > > % sysctl dev.cpu > % sysctl hw.acpi.thermal > > which may provide more clues. Perhaps all 4 cores are in one package, > in which case individual CPU temperatures may not be too meaningful. I > don't know whether there's any equivalent to coretemp(4) for AMD CPUs? Yes, amdtemp(4), which on this system gives one value per processor package: $ sysctl dev.amdtemp dev.amdtemp.0.%desc: AMD CPU On-Die Thermal Sensors dev.amdtemp.0.%driver: amdtemp dev.amdtemp.0.%parent: hostb4 dev.amdtemp.0.sensor_offset: 0 dev.amdtemp.0.core0.sensor0: 24.6C dev.amdtemp.1.%desc: AMD CPU On-Die Thermal Sensors dev.amdtemp.1.%driver: amdtemp dev.amdtemp.1.%parent: hostb10 dev.amdtemp.1.sensor_offset: 0 dev.amdtemp.1.core0.sensor0: 25.3C Those values however seem a bit low to be true... > Yours won't use est(4) but perhaps powernow(0) - 0 meaning no manpage :) > but both are in GENERIC kernels. You should be able to glean from dmesg > which driver/s are in use; a verbose dmesg.boot might come in handy. It is called "hwpstate": $ sysctl dev.hwpstate dev.hwpstate.0.%desc: Cool`n'Quiet 2.0 dev.hwpstate.0.%driver: hwpstate dev.hwpstate.0.%parent: cpu0 dev.hwpstate.0.freq_settings: 3100/10920 2700/8600 2200/6200 1800/4500 1400/3105 Bengt > > 2) turbo mode: this is a more major issue. sysctl reports the > > following for all four cores: > > > > dev.cpu.0.cx_lowest: C2 > > dev.cpu.0.cx_supported: C1/1/0 C2/2/400 > > dev.cpu.0.freq_levels: 2100/4717 1800/3450 1400/2320 > > dev.cpu.0.freq: 2100 > > > > >From the intel CPUs w/ turbo mode I had before I know that there > > should be (at least) a 2101 frequency indicating the turbo clock. This > > frequency is absent, I suspect this means turbo mode does not work. > > Or that these CPUs just don't have a turbo mode, as such? I expect the > specs on AMD's site should mention that, either way? > > > How can I debug this? I believe also that this AMD chip has multiple > > frequencies above the base clock of 2100, so how would that show? > > What leads you to believe that? Where is this documented? > > > Loaded modules: > > > > Id Refs Address Size Name > > 1 23 0xffffffff80200000 1e79670 kernel > > 2 1 0xffffffff8207b000 384858 zfs.ko > > 3 2 0xffffffff82400000 ca38 opensolaris.ko > > 4 1 0xffffffff8240d000 22b98 geom_eli.ko > > 5 1 0xffffffff82431000 ac60 aesni.ko > > 6 1 0xffffffff8243d000 1c520 fuse.ko > > 7 1 0xffffffff82621000 358b ums.ko > > 8 1 0xffffffff82625000 223c4 ipfw.ko > > > > I should note that I boot in legacy mode, not EFI. > > > > asl dump available from http://llamapost.net/elitebook.asl > > If it cxomes to that .. > > > Thanks a lot! > > > > Johannes > > Not much help, but I see noone else springing to your aid so far .. > > cheers, Ian > _______________________________________________ > freebsd-acpi@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-acpi > To unsubscribe, send any mail to "freebsd-acpi-unsubscribe@freebsd.org"
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