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forgetmenot
n00b
Joined: 25 Jun 2006
Posts: 4
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 Posted: Tue Aug 28, 2007 9:19 pm Post subject: x86: (Why) does cpufreq need bios support? |
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Yet another cpufreq scaling not working. Of course I want to ask the manufacturer (King Young, System is
Sumicom S635F barebone with CoreDuo L2400), but first would like to learn something about the problem.
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Linux version 2.6.20-gentoo-r8 (root@tux) (gcc version 4.1.2 (Gentoo 4.1.2 p1.0.1)) #3 SMP
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Started with 2.6.22, tried 2.6.19 also, using 2.6.20 now because 2.6.22 puts 30% load on one core if connected
to internet, what does not happen with 2.6.20. cpufreq works with neither version.
| Code: |
dmesg | grep -e 'ACPI' -e 'CPU'
BIOS-e820: 000000007f6e0000 - 000000007f6e3000 (ACPI NVS)
BIOS-e820: 000000007f6e3000 - 000000007f6f0000 (ACPI data)
ACPI: RSDP (v000 IntelR ) @ 0x000f8ba0
ACPI: RSDT (v001 IntelR AWRDACPI 0x42302e31 AWRD 0x00000000) @ 0x7f6e3040
ACPI: FADT (v001 IntelR AWRDACPI 0x42302e31 AWRD 0x00000000) @ 0x7f6e30c0
ACPI: MCFG (v001 IntelR AWRDACPI 0x42302e31 AWRD 0x00000000) @ 0x7f6e79c0
ACPI: MADT (v001 IntelR AWRDACPI 0x42302e31 AWRD 0x00000000) @ 0x7f6e7900
ACPI: DSDT (v001 INTELR AWRDACPI 0x00001000 MSFT 0x03000000) @ 0x00000000
ACPI: PM-Timer IO Port: 0x408
ACPI: Local APIC address 0xfee00000
ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] enabled)
ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1])
ACPI: IOAPIC (id[0x02] address[0xfec00000] gsi_base[0])
ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
ACPI: IRQ0 used by override.
ACPI: IRQ2 used by override.
ACPI: IRQ9 used by override.
Using ACPI (MADT) for SMP configuration information
Initializing CPU#0
CPU: After generic identify, caps: bfe9fbff 00000000 00000000 00000000 0000c1a9 00000000 00000000
CPU: L1 I cache: 32K, L1 D cache: 32K
CPU: L2 cache: 2048K
CPU: Physical Processor ID: 0
CPU: Processor Core ID: 0
CPU: After all inits, caps: bfe9fbff 00000000 00000000 00002940 0000c1a9 00000000 00000000
Intel machine check reporting enabled on CPU#0.
ACPI: Core revision 20060707
tbxface-0107 [01] load_tables : ACPI Tables successfully acquired
ACPI Namespace successfully loaded at root c050ab90
evxfevnt-0089 [02] enable : Transition to ACPI mode successful
CPU0: Intel Genuine Intel(R) CPU L2400 @ 1.66GHz stepping 08
Initializing CPU#1
CPU: After generic identify, caps: bfe9fbff 00000000 00000000 00000000 0000c1a9 00000000 00000000
CPU: L1 I cache: 32K, L1 D cache: 32K
CPU: L2 cache: 2048K
CPU: Physical Processor ID: 0
CPU: Processor Core ID: 1
CPU: After all inits, caps: bfe9fbff 00000000 00000000 00002940 0000c1a9 00000000 00000000
Intel machine check reporting enabled on CPU#1.
CPU1: Intel Genuine Intel(R) CPU L2400 @ 1.66GHz stepping 08
checking TSC synchronization across 2 CPUs: passed.
Brought up 2 CPUs
ACPI: bus type pci registered
ACPI: Interpreter enabled
ACPI: Using IOAPIC for interrupt routing
ACPI: PCI Root Bridge [PCI0] (0000:00)
PCI quirk: region 0400-047f claimed by ICH6 ACPI/GPIO/TCO
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PEX0._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.HUB0._PRT]
ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 7 9 *10 11 12 14 15)
ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 *5 7 9 10 11 12 14 15)
ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 7 *9 10 11 12 14 15)
ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 7 9 10 *11 12 14 15)
ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 *7 9 10 11 12 14 15)
ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 7 9 10 11 12 14 15) *0, disabled.
ACPI: PCI Interrupt Link [LNK0] (IRQs 3 4 5 7 9 10 11 12 14 15) *0, disabled.
ACPI: PCI Interrupt Link [LNK1] (IRQs *3 4 5 7 9 10 11 12 14 15)
PCI: Using ACPI for IRQ routing
ACPI: PCI Interrupt 0000:00:1c.0[A] -> GSI 16 (level, low) -> IRQ 16
ACPI: PCI Interrupt 0000:00:02.0[A] -> GSI 16 (level, low) -> IRQ 16
ACPI: Power Button (FF) [PWRF]
ACPI: Power Button (CM) [PWRB]
ACPI: Thermal Zone [THRM] (25 C)
ACPI: PCI Interrupt 0000:00:1f.2[B] -> GSI 19 (level, low) -> IRQ 17
ACPI: PCI Interrupt 0000:00:1d.7[A] -> GSI 23 (level, low) -> IRQ 18
ACPI: PCI Interrupt 0000:00:1d.0[A] -> GSI 23 (level, low) -> IRQ 18
ACPI: PCI Interrupt 0000:00:1d.1[B] -> GSI 19 (level, low) -> IRQ 17
ACPI: PCI Interrupt 0000:00:1d.2[C] -> GSI 18 (level, low) -> IRQ 19
ACPI: PCI Interrupt 0000:00:1d.3[D] -> GSI 16 (level, low) -> IRQ 16
ACPI: PCI Interrupt 0000:00:1e.2[A] -> GSI 17 (level, low) -> IRQ 20
ACPI: PCI Interrupt 0000:02:03.0[A] -> GSI 19 (level, low) -> IRQ 17
ACPI: PCI Interrupt 0000:00:1f.3[B] -> GSI 19 (level, low) -> IRQ 17
ACPI: PCI Interrupt 0000:01:00.0[A] -> GSI 16 (level, low) -> IRQ 16
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Using kernel parameter 'cpufreq.debug=7', trying to load cpufreq drivers via
modprobe acpi-cpufreq
modprobe speedstep-centrino
modprobe speedstep-ich,
yields resulting kernel messages:
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acpi-cpufreq: acpi_cpufreq_init
acpi-cpufreq: acpi_cpufreq_early_init
cpufreq-core: trying to register driver acpi-cpufreq
cpufreq-core: adding CPU 0
acpi-cpufreq: acpi_cpufreq_cpu_init
cpufreq-core: initialization failed
cpufreq-core: adding CPU 1
acpi-cpufreq: acpi_cpufreq_cpu_init
cpufreq-core: initialization failed
cpufreq-core: no CPU initialized for driver acpi-cpufreq
cpufreq-core: unregistering CPU 0
cpufreq-core: unregistering CPU 1
cpufreq-core: trying to register driver centrino
cpufreq-core: adding CPU 0
speedstep-centrino: speedstep-centrino: obtaining ACPI data failed
speedstep-centrino: found unsupported CPU with Enhanced SpeedStep: send /proc/cpuinfo to cpufreq@lists.linux.org.uk
cpufreq-core: initialization failed
cpufreq-core: adding CPU 1
speedstep-centrino: speedstep-centrino: obtaining ACPI data failed
cpufreq-core: initialization failed
cpufreq-core: no CPU initialized for driver centrino
cpufreq-core: unregistering CPU 0
cpufreq-core: unregistering CPU 1
speedstep-lib: x86: 6, model: e
speedstep-ich: Intel(R) SpeedStep(TM) capable processor not found
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HPET enabled, ACPI enabled, tried SMP or unicore, tried cpufreq stuff either as compiled in or as module:
No luck.
Patched the sources with linux-phc as described in forum thread
[url]
https://forums.gentoo.org/viewtopic-p-4167122-highlight-cpufreq.html#4167122
[/url]
No success.
Bios (Phoenix Award 6.00) has no Speedstep option.
How can I determine if bios is the problem?
What has ACPI to do with cpufreq?
What does bios do about all that?
Any workaround, for example some M$-windows-tool I could run under wine?
I just want to bring down CPU frequency to 1GHz, what the powersave driver would do.
TIA
forgetmenot |
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didymos
Advocate
Joined: 10 Oct 2005
Posts: 4798
Location: California
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| Posted: Tue Aug 28, 2007 9:28 pm Post subject: |
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If the BIOS has disabled SpeedStep (or whatever they're calling it now) then I think you're basically SOL, although this looks like a potential source of hope:
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speedstep-centrino: found unsupported CPU with Enhanced SpeedStep: send /proc/cpuinfo to cpufreq@lists.linux.org.uk
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There are some tools for Windows (don't know about Linux. Haven't actually looked) which can access normally hidden BIOS capabilities. It may be the BIOS supports SpeedStep just fine, but the people who made the motherboard decided to disable it and hide the functionality.
_________________
Thomas S. Howard |
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forgetmenot
n00b
Joined: 25 Jun 2006
Posts: 4
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| Posted: Tue Aug 28, 2007 11:13 pm Post subject: |
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| Code: |
speedstep-centrino: found unsupported CPU with Enhanced SpeedStep: send /proc/cpuinfo to cpufreq@lists.linux.org.uk
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Not really a source of hope: Other people using a L2400 have no problem with cpufreq.
Mailed there anyway.
Had a look into acpi-stuff. Looks damn complicated.
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>cat /proc/acpi/dsdt > DSDT.dat
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>iasl -d DSDT.dat
Intel ACPI Component Architecture
AML Disassembler version 20060912 [Aug 29 2007]
Copyright (C) 2000 - 2006 Intel Corporation
Supports ACPI Specification Revision 3.0a
Loading Acpi table from file DSDT.dat
Acpi table [DSDT] successfully installed and loaded
Pass 1 parse of [DSDT]
Pass 2 parse of [DSDT]
Parsing Deferred Opcodes (Methods/Buffers/Packages/Regions)
...........................................................................................................................................
...........................................................................................................................................
.......................................................................................................................
Parsing completed
Disassembly completed, written to "DSDT.dsl"
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>iasl -sa DSDT.dsl
Intel ACPI Component Architecture
ASL Optimizing Compiler version 20060912 [Aug 29 2007]
Copyright (C) 2000 - 2006 Intel Corporation
Supports ACPI Specification Revision 3.0a
DSDT.dsl 367: Method (\_WAK, 1, NotSerialized)
Warning 1079 - ^ Reserved method must return a value (_WAK)
DSDT.dsl 394: Store (Local0, Local0)
Error 4049 - ^ Method local variable is not initialized (Local0)
DSDT.dsl 399: Store (Local0, Local0)
Error 4049 - ^ Method local variable is not initialized (Local0)
ASL Input: DSDT.dsl - 5481 lines, 175684 bytes, 1858 keywords
Compilation complete. 2 Errors, 1 Warnings, 0 Remarks, 627 Optimizations
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Are these 2 errors likely to be related with my cpufreq-problem?
TIA |
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forgetmenot
n00b
Joined: 25 Jun 2006
Posts: 4
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| Posted: Wed Sep 05, 2007 11:04 pm Post subject: x86: (Why) does cpufreq need bios support? |
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Ok, Bios has no Speedstep support and manufacturer (King Young, TW) confirmed that Sumicom products
do not support this. No workaround.
HTH
forgetmenot |
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