On Feb 21 21:05:21, [email protected] wrote:
> > Date: Tue, 21 Feb 2023 20:12:46 +0100
> > From: Jan Stary <[email protected]>
> >
> > This is current/arm64 on MacBook Air (dmesg below).
> > The machine seems to be _losing_ battery charge even when on AC.
> > I have been watching sysctl hw for a few minutes (also below):
> >
> > hw.sensors.aplsmc0.amphour0=0.20 Ah (remaining battery capacity)
> > hw.sensors.aplsmc0.amphour0=0.19 Ah (remaining battery capacity)
> > hw.sensors.aplsmc0.amphour0=0.18 Ah (remaining battery capacity)
> > hw.sensors.aplsmc0.amphour0=0.17 Ah (remaining battery capacity)
> >
> > The machine is idle while this happens.
> > That's with apm -A, which means hw.setperf=100 on AC.
> > Only with apm -L does the battery charge start to increase:
> >
> > hw.sensors.aplsmc0.amphour0=0.17 Ah (remaining battery capacity)
> > hw.sensors.aplsmc0.amphour0=0.18 Ah (remaining battery capacity)
> > hw.sensors.aplsmc0.amphour0=0.19 Ah (remaining battery capacity)
>
> Never seen this happen on any of my machines.
Me neither.
> > It's not a HW problem: when running macOS on the machine
> > (which, presumably, is able to utilize the M1 more effectively),
> > the battery does charge on AC (while running a lot of Firefox tabs).
>
> With the same power supply?
Yes.
I am trying now with three different power supplies,
each of which is an adaptor with a USB-C cable.
What I describe above happens with
a 10W, 5.1V, 2.1A adaptor
a 12W, 5.2V, 2.4A adaptor
but it does not happen with
a 61W, 20.3V, 3A adaptor;
the machine is charging while running current.
sysctl hw output for each of the three is below.
Could it be just that? A stronger power supply?
> > hw.sensors.aplsmc0.volt0=11.04 VDC (battery)
> > hw.sensors.aplsmc0.volt1=5.07 VDC (input)
>
> This is strange. The input voltage should definitely be higher under
> normal circumstances.
For the three chargers:
hw.sensors.aplsmc0.volt1=4.88 VDC (input)
hw.sensors.aplsmc0.volt1=5.10 VDC (input)
hw.sensors.aplsmc0.volt1=20.07 VDC (input)
So yes, with this charger the input voltage is much higher,
power and current as well.
> OpenBSD currently does not do any USB PD
> management. So this is what the SMC negotiated. Or maybe this is the
> state in which macOS left things.
Are you please aware of a macOS tool that will let me see these numbers,
so that I have a comparison of what macOS does on the low voltage?
> OpenBSD probably needs to do some
> battery charging management at some point. Until that is done, you
> probably can get out of this state by booting into macOS and making
> sure the battery is something like 80% charged before switching back
> to OpenBSD.
Right :-)
Thanks for the insight,
Jan
10W:
hw.machine=arm64
hw.model=Apple Icestorm r1p1
hw.ncpu=8
hw.byteorder=1234
hw.pagesize=4096
hw.disknames=sd0:0f72c500fa6fee6b
hw.diskcount=1
hw.sensors.aplcpu0.frequency0=2064.00 Hz
hw.sensors.aplcpu0.frequency1=2988.00 Hz
hw.sensors.aplsmc0.temp0=31.50 degC (battery)
hw.sensors.aplsmc0.temp1=38.98 degC (charger)
hw.sensors.aplsmc0.temp2=37.40 degC (wireless)
hw.sensors.aplsmc0.volt0=12.40 VDC (battery)
hw.sensors.aplsmc0.volt1=4.88 VDC (input)
hw.sensors.aplsmc0.power0=7.05 W (input)
hw.sensors.aplsmc0.power1=9.11 W (system)
hw.sensors.aplsmc0.current0=1.44 A (input)
hw.sensors.aplsmc0.amphour0=3.59 Ah (remaining battery capacity)
hw.sensors.aplsmc0.amphour1=4.13 Ah (last full battery capacity)
hw.sensors.aplsmc0.amphour2=4.38 Ah (battery design capacity)
hw.sensors.aplsmc0.indicator0=On (power supply)
hw.sensors.aplsmc0.raw0=144 (battery discharge cycles)
hw.cpuspeed=2988
hw.setperf=100
hw.product=Apple MacBook Air (M1, 2020)
hw.serialno=C02GWN39Q6L4
hw.physmem=7916920832
hw.usermem=7916904448
hw.ncpufound=8
hw.allowpowerdown=1
hw.perfpolicy=auto
hw.smt=0
hw.ncpuonline=8
hw.power=1
12W:
hw.machine=arm64
hw.model=Apple Icestorm r1p1
hw.ncpu=8
hw.byteorder=1234
hw.pagesize=4096
hw.disknames=sd0:0f72c500fa6fee6b
hw.diskcount=1
hw.sensors.aplcpu0.frequency0=2064.00 Hz
hw.sensors.aplcpu0.frequency1=2988.00 Hz
hw.sensors.aplsmc0.temp0=31.40 degC (battery)
hw.sensors.aplsmc0.temp1=39.09 degC (charger)
hw.sensors.aplsmc0.temp2=37.50 degC (wireless)
hw.sensors.aplsmc0.volt0=12.40 VDC (battery)
hw.sensors.aplsmc0.volt1=5.10 VDC (input)
hw.sensors.aplsmc0.power0=7.39 W (input)
hw.sensors.aplsmc0.power1=9.09 W (system)
hw.sensors.aplsmc0.current0=1.45 A (input)
hw.sensors.aplsmc0.amphour0=3.59 Ah (remaining battery capacity)
hw.sensors.aplsmc0.amphour1=4.13 Ah (last full battery capacity)
hw.sensors.aplsmc0.amphour2=4.38 Ah (battery design capacity)
hw.sensors.aplsmc0.indicator0=On (power supply)
hw.sensors.aplsmc0.raw0=144 (battery discharge cycles)
hw.cpuspeed=2988
hw.setperf=100
hw.product=Apple MacBook Air (M1, 2020)
hw.serialno=C02GWN39Q6L4
hw.physmem=7916920832
hw.usermem=7916904448
hw.ncpufound=8
hw.allowpowerdown=1
hw.perfpolicy=auto
hw.smt=0
hw.ncpuonline=8
hw.power=1
61W:
hw.machine=arm64
hw.model=Apple Icestorm r1p1
hw.ncpu=8
hw.byteorder=1234
hw.pagesize=4096
hw.disknames=sd0:0f72c500fa6fee6b
hw.diskcount=1
hw.sensors.aplcpu0.frequency0=2064.00 Hz
hw.sensors.aplcpu0.frequency1=2988.00 Hz
hw.sensors.aplsmc0.temp0=34.40 degC (battery)
hw.sensors.aplsmc0.temp1=50.61 degC (charger)
hw.sensors.aplsmc0.temp2=46.28 degC (wireless)
hw.sensors.aplsmc0.volt0=12.48 VDC (battery)
hw.sensors.aplsmc0.volt1=20.07 VDC (input)
hw.sensors.aplsmc0.power0=40.21 W (input)
hw.sensors.aplsmc0.power1=11.45 W (system)
hw.sensors.aplsmc0.current0=2.00 A (input)
hw.sensors.aplsmc0.amphour0=2.60 Ah (remaining battery capacity)
hw.sensors.aplsmc0.amphour1=4.10 Ah (last full battery capacity)
hw.sensors.aplsmc0.amphour2=4.38 Ah (battery design capacity)
hw.sensors.aplsmc0.indicator0=On (power supply)
hw.sensors.aplsmc0.raw0=145 (battery discharge cycles)
hw.cpuspeed=2988
hw.setperf=100
hw.product=Apple MacBook Air (M1, 2020)
hw.serialno=C02GWN39Q6L4
hw.physmem=7916920832
hw.usermem=7916904448
hw.ncpufound=8
hw.allowpowerdown=1
hw.perfpolicy=auto
hw.smt=0
hw.ncpuonline=8
hw.power=1
