https://bugzilla.kernel.org/show_bug.cgi?id=217703
Bug ID: 217703
Summary: XPS 17 9730 runs significantly warmer on Kernel
6.5-rc3 compared to Kernel 6.4.3
Product: ACPI
Version: 2.5
Hardware: Intel
OS: Linux
Status: NEW
Severity: normal
Priority: P3
Component: Power-Thermal
Assignee: acpi_power-ther...@kernel-bugs.osdl.org
Reporter: goran.brkul...@gmail.com
Regression: No
On my new XPS 17 9730 laptop, I recently installed the Kernel 6.5-rc3. I
noticed, however, that during its operation, the laptop was getting
significantly warmer than before. I did some analysis using the 'stress' tool
to measure and compare the difference in CPU temperatures between Kernel 6.4.3
and Kernel 6.5-rc3. Here are my results:
OS: Ubuntu 23.10
CPU: i7-13700H
kernel 6.4.3:
Initial CPU temperature:
coretemp-isa-0000
Core 0: +47.0°C (high = +100.0°C, crit = +100.0°C)
Core 4: +45.0°C (high = +100.0°C, crit = +100.0°C)
Core 8: +46.0°C (high = +100.0°C, crit = +100.0°C)
Core 12: +46.0°C (high = +100.0°C, crit = +100.0°C)
Core 16: +45.0°C (high = +100.0°C, crit = +100.0°C)
Core 20: +44.0°C (high = +100.0°C, crit = +100.0°C)
Core 24: +44.0°C (high = +100.0°C, crit = +100.0°C)
Core 25: +44.0°C (high = +100.0°C, crit = +100.0°C)
Core 26: +44.0°C (high = +100.0°C, crit = +100.0°C)
Core 27: +44.0°C (high = +100.0°C, crit = +100.0°C)
Core 28: +45.0°C (high = +100.0°C, crit = +100.0°C)
Core 29: +45.0°C (high = +100.0°C, crit = +100.0°C)
Core 30: +45.0°C (high = +100.0°C, crit = +100.0°C)
Core 31: +45.0°C (high = +100.0°C, crit = +100.0°C)
Stressing CPU for 30 seconds...
stress: info: [4858] dispatching hogs: 14 cpu, 0 io, 0 vm, 0 hdd
stress: info: [4858] successful run completed in 30s
CPU temperature immediately after stress test:
coretemp-isa-0000
Core 0: +67.0°C (high = +100.0°C, crit = +100.0°C)
Core 4: +76.0°C (high = +100.0°C, crit = +100.0°C)
Core 8: +69.0°C (high = +100.0°C, crit = +100.0°C)
Core 12: +77.0°C (high = +100.0°C, crit = +100.0°C)
Core 16: +69.0°C (high = +100.0°C, crit = +100.0°C)
Core 20: +76.0°C (high = +100.0°C, crit = +100.0°C)
Core 24: +68.0°C (high = +100.0°C, crit = +100.0°C)
Core 25: +68.0°C (high = +100.0°C, crit = +100.0°C)
Core 26: +68.0°C (high = +100.0°C, crit = +100.0°C)
Core 27: +68.0°C (high = +100.0°C, crit = +100.0°C)
Core 28: +71.0°C (high = +100.0°C, crit = +100.0°C)
Core 29: +71.0°C (high = +100.0°C, crit = +100.0°C)
Core 30: +71.0°C (high = +100.0°C, crit = +100.0°C)
Core 31: +71.0°C (high = +100.0°C, crit = +100.0°C)
Test ended at: Tue Jul 25 01:10:16 PM CEST 2023
kernel 6.5-rc-3:
Initial CPU temperature:
coretemp-isa-0000
Core 0: +46.0°C (high = +100.0°C, crit = +100.0°C)
Core 4: +46.0°C (high = +100.0°C, crit = +100.0°C)
Core 8: +46.0°C (high = +100.0°C, crit = +100.0°C)
Core 12: +46.0°C (high = +100.0°C, crit = +100.0°C)
Core 16: +44.0°C (high = +100.0°C, crit = +100.0°C)
Core 20: +44.0°C (high = +100.0°C, crit = +100.0°C)
Core 24: +45.0°C (high = +100.0°C, crit = +100.0°C)
Core 25: +45.0°C (high = +100.0°C, crit = +100.0°C)
Core 26: +45.0°C (high = +100.0°C, crit = +100.0°C)
Core 27: +45.0°C (high = +100.0°C, crit = +100.0°C)
Core 28: +45.0°C (high = +100.0°C, crit = +100.0°C)
Core 29: +45.0°C (high = +100.0°C, crit = +100.0°C)
Core 30: +45.0°C (high = +100.0°C, crit = +100.0°C)
Core 31: +45.0°C (high = +100.0°C, crit = +100.0°C)
Stressing CPU for 30 seconds...
stress: info: [11146] dispatching hogs: 14 cpu, 0 io, 0 vm, 0 hdd
stress: info: [11146] successful run completed in 30s
CPU temperature immediately after stress test:
coretemp-isa-0000
Core 0: +84.0°C (high = +100.0°C, crit = +100.0°C)
Core 4: +97.0°C (high = +100.0°C, crit = +100.0°C)
Core 8: +87.0°C (high = +100.0°C, crit = +100.0°C)
Core 12: +100.0°C (high = +100.0°C, crit = +100.0°C)
Core 16: +86.0°C (high = +100.0°C, crit = +100.0°C)
Core 20: +99.0°C (high = +100.0°C, crit = +100.0°C)
Core 24: +83.0°C (high = +100.0°C, crit = +100.0°C)
Core 25: +83.0°C (high = +100.0°C, crit = +100.0°C)
Core 26: +83.0°C (high = +100.0°C, crit = +100.0°C)
Core 27: +83.0°C (high = +100.0°C, crit = +100.0°C)
Core 28: +89.0°C (high = +100.0°C, crit = +100.0°C)
Core 29: +89.0°C (high = +100.0°C, crit = +100.0°C)
Core 30: +89.0°C (high = +100.0°C, crit = +100.0°C)
Core 31: +89.0°C (high = +100.0°C, crit = +100.0°C)
Test ended at: Tue Jul 25 01:05:42 PM CEST 2023
I tested few times with different setup and CPU temp on 6.5-rc3 is always
higher especially when stressing with fewer cores.
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