New: Kernel fails to load amd_pstate driver on 3970x while Windows works well on the same machine
https://bugzilla.kernel.org/show_bug.cgi?id=217630
Bug ID: 217630
Summary: Kernel fails to load amd_pstate driver on 3970x while
Windows works well on the same machine
Product: Power Management
Version: 2.5
Hardware: AMD
OS: Linux
Status: NEW
Severity: high
Priority: P3
Component: cpufreq
Assignee: [email protected]
Reporter: [email protected]
Regression: NoI have 3970x CPU installed into Gigabyte Designare TRX40 rev 1.0 motherboard. The UEFI is updated to version F6 so AGESA has version 1.0.0.7.
CPPC is explicitly enabled in UEFI settings. It definitely works in Windows:
Quoted 5 lines
Information 7/3/2023 4:46:04 PM
Microsoft-Windows-Kernel-Processor-Power 55 (47) "Processor 63
in group 0 exposes the following power management capabilities:
Idle state type: ACPI Idle (C) States (2 state(s)) Performance state type: ACPI Collaborative Processor Performance Control
Kernel 6.3 fails to load amd_pstate with both "amd_pstate=active" and "amd_pstate=passive" kernel parameters with the following message:
Quoted 1 line
amd_pstate: the_CPCobject is not present in SBIOS or ACPI disabled
Kernel 6.4.0 doesn't shows the same error "amd_pstate=active", "amd_pstate=passive" and "amd_pstate=guided".
Please help.
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[Bug 217630] Kernel fails to load amd_pstate driver on 3970x while Windows works well on the same machine
https://bugzilla.kernel.org/show_bug.cgi?id=217630
--- Comment #1 from Pavel S ([email protected]) ---
Quoted 2 lines
Kernel 6.4.0 shows the same error with "amd_pstate=active", "amd_pstate=passive" and "amd_pstate=guided".
Sorry about the typos
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[Bug 217630] Kernel fails to load amd_pstate driver on 3970x while Windows works well on the same machine
In reply to [email protected]https://bugzilla.kernel.org/show_bug.cgi?id=217630
Bagas Sanjaya ([email protected]) changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |[email protected]
--- Comment #2 from Bagas Sanjaya ([email protected]) --- (In reply to Pavel S from comment #0)
Quoted 12 lines
I have 3970x CPU installed into Gigabyte Designare TRX40 rev 1.0 motherboard. The UEFI is updated to version F6 so AGESA has version 1.0.0.7.
CPPC is explicitly enabled in UEFI settings. It definitely works in Windows:
Quoted 2 lines
Information 7/3/2023 4:46:04 PM
Microsoft-Windows-Kernel-Processor-Power 55 (47) "Processor63
Quoted 3 lines
in group 0 exposes the following power management capabilities:
Idle state type: ACPI Idle (C) States (2 state(s)) Performance state type: ACPI Collaborative Processor Performance Control
Quoted 8 lines
Kernel 6.3 fails to load
amd_pstatewith both "amd_pstate=active" and "amd_pstate=passive" kernel parameters with the following message:Quoted 1 line
amd_pstate: the_CPCobject is not present in SBIOS or ACPI disabledKernel 6.4.0 doesn't shows the same error "amd_pstate=active", "amd_pstate=passive" and "amd_pstate=guided".
Do you mean this issue doesn't show up anymore in v6.4.y?
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[Bug 217630] Kernel fails to load amd_pstate driver on 3970x while Windows works well on the same machine
In reply to [email protected]https://bugzilla.kernel.org/show_bug.cgi?id=217630
--- Comment #3 from Pavel S ([email protected]) ---
It does show up in 6.4 with exactly the same manner. I just made some typos, sorry about that.
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[Bug 217630] Kernel fails to load amd_pstate driver on 3970x while Windows works well on the same machine
In reply to [email protected]https://bugzilla.kernel.org/show_bug.cgi?id=217630
--- Comment #4 from Jan Kosterec ([email protected]) --- Almost the same HW here.
3970x CPU, Gigabyte Designare TRX40 rev 1.1, BIOS v. FD. linux kernel v. 6.4.7
No combination of settings activates amd_pstate driver. Error in syslog:
kernel: amd_pstate: the _CPC object is not present in SBIOS or ACPI disabled
In bios there are available setting CPPC and prefered cores, all enabled.
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