Date: Wed, 16 Dec 2015 01:15:48 +1100 (EST) From: Ian Smith <smithi@nimnet.asn.au> To: Johannes Dieterich <dieterich.joh@gmail.com> Cc: freebsd-acpi@freebsd.org Subject: Re: AMD A12-8800B ACPI questions (turbo mode, temp zones) Message-ID: <20151216005408.B61100@sola.nimnet.asn.au> In-Reply-To: <CABquGzUkHvGTqe1-hswMnnmjbf1qgqKYEEEH3GV3VmzvUeTTBA@mail.gmail.com> References: <CABquGzUkHvGTqe1-hswMnnmjbf1qgqKYEEEH3GV3VmzvUeTTBA@mail.gmail.com>
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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? 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. > 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
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