Date: Wed, 17 Feb 2021 07:58:46 -0800 From: Mark Millard <marklmi@yahoo.com> To: Jason Bacon <bacon4000@gmail.com> Cc: freebsd-ppc@freebsd.org Subject: Re: PowerMac G5 fans going crazy Message-ID: <98C573A9-A0E4-4CE8-BDD9-95C3CCB5BA61@yahoo.com> In-Reply-To: <3777f200-3f3d-3daa-53fc-95772ec543b6@gmail.com> References: <CADyfeQUw6wfqbDL4BrcBjp3eebBUrmRqJf9n9SE6mabymEhECQ@mail.gmail.com> <3777f200-3f3d-3daa-53fc-95772ec543b6@gmail.com>
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> On 2021-Feb-17, at 05:17, Jason Bacon <bacon4000@gmail.com> wrote: > > > It's a known issue - search the archives of this list. I think someone mentioned that it's been fixed in 13-BETA2, No fixes for the mis-matched times across cpus issues have been committed to main or stable/13 . Sleeping threads can still sleep way too long. > but my PowerMac has problems with the DVD drive and thumbs its nose at all my current USB sticks ( had an old LG 2GB that worked, but it died ), so I can't verify right now. > > Also, I suggest to anyone with a liquid-cooled PowerMac to put some sort of deflector over the power supply, assuming the PS is at the bottom of the case like the models I managed in the past. The CPU cooler is likely to leak at some point and drip antifreeze into the PS. Loud noise, lots of yellow smoke. It's exciting... > > Best, > > JB > > On 2/16/21 8:49 PM, Julio Merino wrote: >> Hi, >> >> I have this liquid-cooled dual G5 PowerMac sitting in my cold garage. The >> machine runs fine for a while and can even do a buildworld in silence... >> but sometimes, pretty much at random, decides to spin up its fans to the >> maximum. The machine is pretty much idle when this happens so usage doesn't >> explain this. >> >> I haven't correlated this fully, but when the machine does this, it seems >> to also become unresponsive. Moving the mouse on the console shows the >> pointer moving but it eventually freezes. Except... the machine responds to >> pings, and even to SSH. *However*, it is sluggish. SSH takes forever to >> respond, but eventually does. Similarly, the console eventually recovers >> too and allows input... until things become slow again. And while it's >> responding, running "top" doesn't show anything strange, not in user CPU >> consumption nor in sys. >> >> Interestingly, running a "sysctl -a" makes the fans quiet down, maybe for a >> long time, maybe for a couple of minutes only. See the diff below of >> "sysctl -a" from while the fans are full-speed to right after, and notice >> that the temperatures look just fine. >> >> Any ideas about what might be happening here? >> >> Thanks! >> >> >> @@ -1,7 +1,9 @@ >> -dev.smusat.0.cpu_a1_core_current: 10 >> +device smu >> +kern.consmute: 0 >> +dev.smusat.0.cpu_a1_core_current: 11 >> dev.smusat.0.cpu_a0_core_current: 10 >> -dev.smusat.0.cpu_a1_diode_temp: 27.7C >> -dev.smusat.0.cpu_a0_diode_temp: 26.5C >> +dev.smusat.0.cpu_a1_diode_temp: 28.1C >> +dev.smusat.0.cpu_a0_diode_temp: 26.7C >> dev.smusat.0.cpu_a1_vcore: 1 >> dev.smusat.0.cpu_a0_vcore: 1 >> dev.smusat.0.%parent: iicbus2 >> @@ -12,25 +14,25 @@ >> dev.smusat.%parent: >> dev.smu.0.server_mode: 0 >> dev.smu.0.sensors.slots_power: 16816 >> -dev.smu.0.fans.expansion_slots_intake.rpm: 4487 >> +dev.smu.0.fans.expansion_slots_intake.rpm: 1572 >> dev.smu.0.fans.expansion_slots_intake.maxrpm: 4500 >> dev.smu.0.fans.expansion_slots_intake.minrpm: 1560 >> -dev.smu.0.fans.cpu_b_exhaust.rpm: 3168 >> +dev.smu.0.fans.cpu_b_exhaust.rpm: 551 >> dev.smu.0.fans.cpu_b_exhaust.maxrpm: 3200 >> dev.smu.0.fans.cpu_b_exhaust.minrpm: 500 >> -dev.smu.0.fans.cpu_a_exhaust.rpm: 3031 >> +dev.smu.0.fans.cpu_a_exhaust.rpm: 548 >> dev.smu.0.fans.cpu_a_exhaust.maxrpm: 3200 >> dev.smu.0.fans.cpu_a_exhaust.minrpm: 500 >> -dev.smu.0.fans.cpu_b_intake.rpm: 3045 >> +dev.smu.0.fans.cpu_b_intake.rpm: 534 >> dev.smu.0.fans.cpu_b_intake.maxrpm: 3200 >> dev.smu.0.fans.cpu_b_intake.minrpm: 485 >> -dev.smu.0.fans.cpu_a_intake.rpm: 3173 >> +dev.smu.0.fans.cpu_a_intake.rpm: 538 >> dev.smu.0.fans.cpu_a_intake.maxrpm: 3200 >> dev.smu.0.fans.cpu_a_intake.minrpm: 485 >> -dev.smu.0.fans.backside.rpm: 2851 >> +dev.smu.0.fans.backside.rpm: 1174 >> dev.smu.0.fans.backside.maxrpm: 3000 >> dev.smu.0.fans.backside.minrpm: 1100 >> -dev.smu.0.fans.drive_bay_a_intake.rpm: 3792 >> +dev.smu.0.fans.drive_bay_a_intake.rpm: 1011 >> dev.smu.0.fans.drive_bay_a_intake.maxrpm: 4000 >> dev.smu.0.fans.drive_bay_a_intake.minrpm: 1000 >> dev.smu.0.%parent: ofwbus0 >> > === Mark Millard marklmi at yahoo.com ( dsl-only.net went away in early 2018-Mar)home | help
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