On 8/10/20 10:21, Guillermo Rozas wrote:
It is Ubuntu 20.04 derivative - fully updated, and the bios is also
fully updated. Both CPU and GPU are not overloaded in terms - they
never
lock at 99% on all cores (my old machine can run on this load for
many
hours - no overheating - max goes to about 90 Celsius no power supply
disconnect). But the new machine runs often at more than 100
Celsius (as
a peak temperature). Normally it is within 85-95 under load but peaks
above 100
You should distinguish the two "problems":
yes sorry
a) power supply disconnects (this is critical as when it happens it
drains the battery).
b) too hot - I am starting to see a pattern that this is a general ryzen
3900 issue
- the CPU gets too hot: maybe it is not a problem, it is what it is.
Notebook's thermal limits are always compromised, even on "gaming
machines". You can clean filters, fans, re-apply thermal paste, but in
the end the limits are still there.
- the BIOS and/or kernel is not throttling the CPU as it should, and
this is causing the hardware safety switches to shut down the
computer. Some safety measures are not reset until you fully cut the
power to the motherboard, so it's not strange that you need to
disconnect the power brick to turn it on again.
What are the peak temperatures of your computers when under load?
Mine (Intel 4720HQ) goes up to 97-98°C before aggressively throttling
back. You should check on AMD's site which are the warning and maximum
temperatures for your particular CPU, and compare them with the data
the system has. For example, using the command "sensors" for me shows:
Package id 0: +55.0°C (high = +84.0°C, crit = +100.0°C)
Thank you!
On completely idle machine I am getting
iwlwifi_1-virtual-0
Adapter: Virtual device
temp1: +40.0°C
BAT0-acpi-0
Adapter: ACPI interface
in0: 12.35 V
curr1: 0.00 A
k10temp-pci-00c3
Adapter: PCI adapter
Tdie: +71.9°C (high = +70.0°C)
Tctl: +71.9°C
acpitz-acpi-0
Adapter: ACPI interface
temp1: +73.0°C (crit = +120.0°C)
When hot - it goes over 100 C - about 104 to 107.
which is consistent with the thermal throttling in my CPU when the
temperature is around 85-95°C. As I said before, unless the throttling
safeguards are improperly configured or disabled, your CPU should
never get hot enough to shut down under normal operation. My CPU is
old and power inefficient by today's standards, and even then it's
capable of working on passive cooling alone by automatically lowering
the frequency to the minimum (accidentally tested once the fans got
stuck).
Things to check:
- is frequency scaling working at all?
- which is the frequency scaling governor?
Some info: https://wiki.archlinux.org/index.php/CPU_frequency_scaling
Thank you - will check that.
Regards,
Guillermo
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@Jack Bowling
Thank you for the video looks like it has to be done within the OS. My
bios is very limited - no changes available for frequency and voltage.
Will also check with the manufacturer (they support linux).
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