Question about xserve G5

[Jason Bacon]

I don't have any overheating problems on my PowerMac G5, which I think 
is pretty similar except for the form factor.  Are you sure it's 
overheating that's causing the shutdown?

The wild fan issue in my case oddly seems to be mitigated by having a 
monitor and keyboard connected during boot.  If I boot headless, the 
fans ramp up almost every time.  With monitor and keyboard, it almost 
never happens.

On 10/29/20 2:15 PM, Javi Hotmail wrote:
> Also another issue that (despite the fact that I cleaned the CPUs and
> added new thermal paste) they overheat and the system turns off.
>
> With kern.smp.disabled=1 takes a bit longer, but it also shuts down. Is
> this also a known issue?
>
>
> Kind Regards,
>
> Javi.
>
>
> On 29/10/2020 18:07, Javi Hotmail wrote:
>> Here it is.
>>
>>
>> Javi.
>>
>>
>> On 29/10/2020 14:14, Nathan Whitehorn wrote:
>>> Could you provide your dmesg? It would be nice to do what sensors you
>>> have.
>>> -Nathan
>>>
>>> On 10/29/20 8:36 AM, Javi Hotmail wrote:
>>>> If I'm not mistake the issue then is how the PPC implementation reads
>>>> the device tree data from open firmware correct?.
>>>>
>>>> I believe this implementation is within:
>>>>
>>>> pcr.c        pmcr.c        pmufreq.c
>>>>
>>>>
>>>> Thanks in advance,
>>>>
>>>> Javi.
>>>>
>>>>
>>>> On 29/10/2020 12:26, Michael Tuexen wrote:
>>>>>> On 29. Oct 2020, at 10:51, Javi Hotmail <volkovdablo at hotmail.com>
>>>>>> wrote:
>>>>>>
>>>>>> Hello all,
>>>>>>
>>>>>> I'm new in this mailing list, although I've been going back and forth
>>>>>> with PPC (G4/G5) and FreeBSD since 9.0.
>>>>>>
>>>>>> I have a question that perhaps some of you already stumbled across,
>>>>>> but
>>>>>> I wanted to know if there is a way to get it to work before I jump in
>>>>>> the code.
>>>>>>
>>>>>> I have a xserve G5 dual 2.3Ghz, and I installed FreeBSD 12.1. Works
>>>>>> quite well, but I cannot get cpufreq + powerd/powerdxx to work at all.
>>>>>>
>>>>>> I get this:
>>>>>>
>>>>>> # powerdxx
>>>>>> powerd++: (ENOFREQ) cannot access dev.cpu.0.freq, at least the
>>>>>> first CPU
>>>>>> core must support frequency updates
>>>>>>
>>>>>>
>>>>>> This is the relevant part of sysctl:
>>>>>> # sysctl dev.cpu
>>>>>> dev.cpu.1.%parent: cpulist0
>>>>>> dev.cpu.1.%pnpinfo: name=PowerPC,G5
>>>>>> dev.cpu.1.%location:
>>>>>> dev.cpu.1.%driver: cpu
>>>>>> dev.cpu.1.%desc: Open Firmware CPU
>>>>>> dev.cpu.0.%parent: cpulist0
>>>>>> dev.cpu.0.%pnpinfo: name=PowerPC,G5
>>>>>> dev.cpu.0.%location:
>>>>>> dev.cpu.0.%driver: cpu
>>>>>> dev.cpu.0.%desc: Open Firmware CPU
>>>>>> dev.cpu.%parent:
>>>>>>
>>>>>> The issue is that after few minutes the fans ramp up to insane levels,
>>>>>> and my goal with this is to use powerd or powerdxx to manage the
>>>>>> situation.
>>>>> The fans ramping up is a known issue. One way to work around it is to
>>>>> disable SMP.
>>>>>
>>>>> To disable SMP, put in /boot/loader.conf
>>>>> kern.smp.disabled=1
>>>>>
>>>>> Best regards
>>>>> Michael
>>>>>> Thanks in advance,
>>>>>>
>>>>>> Javi.
>>>>>>
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