Title: Z890 Pro-A (BIOS 3.31) - Random CPU performance after warm reboot
Hi,
I'm experiencing a very strange issue with my ASRock Z890 Pro-A running BIOS 3.31.
Hardware
- ASRock Z890 Pro-A
- BIOS 3.31
- Intel Core Ultra 270K
- 4x Samsung M323R1GA4DB0-CWM - 8GB - 1 x 8GB - DDR5-5600 MHz - 288-pin DIMM
- OS: Linux Kernel 7.1
- Onboard GPU
- PowerSupply: 750W
- Kingston NVME 1 TB
After a warm reboot, the CPU randomly starts in one of three different performance states.
To test this, I run the following script after every reboot:
#!/bin/bash
cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
stress-ng --cpu 0 --timeout 30s &
sudo turbostat --quiet --show PkgWatt --interval 1 --num_iterations 30
I performed 30 consecutive warm reboots, and the results were:
1101x0111110x1111010x111001101
where:
- 1 = approximately 200 W package power (expected performance)
- 0 = approximately 70 W
- x = approximately 17 W
The governor is always the same, and the workload is identical for every test.
I have already tried:
- Loading BIOS defaults.
- Changing the governor between
performance and powersave.
- Enabling/disabling BIOS performance-related options (including Base Frequency Boost).
None of these changes solved the problem.
The CPU simply appears to boot into different performance states at random after a warm reboot.
Has anyone with a Z890 Pro-A (or another ASRock Z890 board) experienced something similar?
Could this be a BIOS 3.31 issue or a firmware initialization problem?
Any suggestions or ideas would be greatly appreciated.Title: Z890 Pro-A (BIOS 3.31) - Random CPU performance after warm rebootHi,I'm experiencing a very strange issue with my ASRock Z890 Pro-A running BIOS 3.31.HardwareASRock Z890 Pro-A
Intel Core Ultra 270KAfter a warm reboot, the CPU randomly starts in one of three different performance states.To test this, I run the following script after every reboot:
#!/bin/bash
cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
stress-ng --cpu 0 --timeout 30s &
sudo turbostat --quiet --show PkgWatt --interval 1 -- num_iterations 30
I performed 30 consecutive warm reboots, and the results
1101x0111110x1111010x111001101
where:
1 = approximately 200 W package power (expected performance)
0 = approximately 70 W
x = approximately 17 W
The governor is always the same, and the workload is identical for every test.I have already tried:Loading BIOS defaults.
Changing the governor between performance and powersave.
Enabling/disabling BIOS performance-related options (including Base Frequency Boost). None of these changes solved the problem.The CPU simply appears to boot into different performance states at random after a warm reboot.Has anyone with a Z890 Pro-A (or another ASRock Z890 board) experienced something similar? Could this be a BIOS 3.31 issue or a firmware initialization problem? Any suggestions or ideas would be greatly appreciated.
Thanks!