[Bug 7866] New: cpufreq fails to correctly identify Intel Conroe operating frequencies

[Bug 7866] New: cpufreq fails to correctly identify Intel Conroe operating frequencies

[bugme-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=7866

           Summary: cpufreq fails to correctly identify Intel Conroe
                    operating frequencies
    Kernel Version: 2.6.20-rc5
            Status: NEW
          Severity: high
             Owner: cpufreq@www.linux.org.uk
         Submitter: jared@jaredcam.net


Most recent kernel where this bug did *NOT* occur: none
Distribution:  Ubuntu Edgy (6.10)
Hardware Environment:
Abit AW9D-MAX motherboard
Intel 975x chipset
Intel Conroe E6660 @ 2.4ghz

cat /proc/cpuinfo 
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 15
model name      : Intel(R) Core(TM)2 CPU          6600  @ 2.40GHz
stepping        : 6
cpu MHz         : 600.000
cache size      : 4096 KB
physical id     : 0
siblings        : 2
core id         : 0
cpu cores       : 2


Software Environment: 2.6.20-rc5
Problem Description:

cpufreq incorrectly identifies the operating frequencies of my processor as
600MHz and 900MHz.  Here is the output of cpufreq.debug=7:

[   15.007329] acpi-cpufreq: acpi_cpufreq_init
[   15.007331] acpi-cpufreq: acpi_cpufreq_early_init
[   15.007339] cpufreq-core: trying to register driver acpi-cpufreq
[   15.007341] cpufreq-core: adding CPU 0
[   15.007343] acpi-cpufreq: acpi_cpufreq_cpu_init
[   15.007462] acpi-cpufreq: SYSTEM IO addr space
[   15.007465] freq-table: table entry 0: 900000 kHz, 0 index
[   15.007466] freq-table: table entry 1: 600000 kHz, 1 index
[   15.007639] acpi-cpufreq: CPU0 - ACPI performance management activated.
[   15.007641] acpi-cpufreq:      *P0: 900 MHz, 88000 mW, 160 uS
[   15.007643] acpi-cpufreq:       P1: 600 MHz, 56000 mW, 160 uS
[   15.007645] freq-table: setting show_table for cpu 0 to f79c5e80
[   15.008496] cpufreq-core: setting new policy for CPU 0: 600000 - 900000 kHz
[   15.008498] acpi-cpufreq: acpi_cpufreq_verify
[   15.008500] freq-table: request for verification of policy (600000 - 900000
kHz) for cpu 0
[   15.008502] freq-table: verification lead to (600000 - 900000 kHz) for cpu 0
[   15.008504] acpi-cpufreq: acpi_cpufreq_verify
[   15.008506] freq-table: request for verification of policy (600000 - 900000
kHz) for cpu 0
[   15.008508] freq-table: verification lead to (600000 - 900000 kHz) for cpu 0
[   15.008513] cpufreq-core: new min and max freqs are 600000 - 900000 kHz
[   15.008514] cpufreq-core: governor switch
[   15.008516] cpufreq-core: __cpufreq_governor for CPU 0, event 1
[   15.008517] performance: setting to 900000 kHz because of event 1
[   15.008519] cpufreq-core: target for CPU 0: 900000 kHz, relation 1
[   15.008521] acpi-cpufreq: acpi_cpufreq_target 900000 (0)
[   15.008522] freq-table: request for target 900000 kHz (relation: 1) for cpu 0
[   15.008524] freq-table: target is 0 (900000 kHz, 0)
[   15.008526] acpi-cpufreq: Called after resume, resetting to P0
[   15.008527] cpufreq-core: notification 0 of frequency transition to 900000 kHz
[   15.008530] userspace: saving cpu_cur_freq of cpu 0 to be 900000 kHz
[   15.008679] cpufreq-core: notification 1 of frequency transition to 900000 kHz
[   15.008682] userspace: saving cpu_cur_freq of cpu 0 to be 900000 kHz
[   15.008684] cpufreq-core: governor: change or update limits
[   15.008686] cpufreq-core: __cpufreq_governor for CPU 0, event 3
[   15.008687] performance: setting to 900000 kHz because of event 3
[   15.008689] cpufreq-core: target for CPU 0: 900000 kHz, relation 1
[   15.008691] acpi-cpufreq: acpi_cpufreq_target 900000 (0)
[   15.008693] freq-table: request for target 900000 kHz (relation: 1) for cpu 0
[   15.008694] freq-table: target is 0 (900000 kHz, 0)
[   15.008696] acpi-cpufreq: Already at target state (P0)
[   15.008697] cpufreq-core: initialization complete
[   15.008699] cpufreq-core: adding CPU 1
[   15.008700] acpi-cpufreq: acpi_cpufreq_cpu_init
[   15.008812] acpi-cpufreq: SYSTEM IO addr space
[   15.008814] freq-table: table entry 0: 900000 kHz, 0 index
[   15.008815] freq-table: table entry 1: 600000 kHz, 1 index
[   15.008817] acpi-cpufreq: CPU1 - ACPI performance management activated.
[   15.008819] acpi-cpufreq:      *P0: 900 MHz, 88000 mW, 160 uS
[   15.008821] acpi-cpufreq:       P1: 600 MHz, 56000 mW, 160 uS
[   15.008823] freq-table: setting show_table for cpu 1 to f7aa34a0
[   15.008835] cpufreq-core: setting new policy for CPU 1: 600000 - 900000 kHz
[   15.008837] acpi-cpufreq: acpi_cpufreq_verify
[   15.008839] freq-table: request for verification of policy (600000 - 900000
kHz) for cpu 1
[   15.008841] freq-table: verification lead to (600000 - 900000 kHz) for cpu 1
[   15.008843] acpi-cpufreq: acpi_cpufreq_verify
[   15.008844] freq-table: request for verification of policy (600000 - 900000
kHz) for cpu 1
[   15.008846] freq-table: verification lead to (600000 - 900000 kHz) for cpu 1
[   15.008851] cpufreq-core: new min and max freqs are 600000 - 900000 kHz
[   15.008852] cpufreq-core: governor switch
[   15.008853] cpufreq-core: __cpufreq_governor for CPU 1, event 1
[   15.008855] performance: setting to 900000 kHz because of event 1
[   15.008857] cpufreq-core: target for CPU 1: 900000 kHz, relation 1
[   15.008858] acpi-cpufreq: acpi_cpufreq_target 900000 (1)
[   15.008860] freq-table: request for target 900000 kHz (relation: 1) for cpu 1
[   15.008862] freq-table: target is 0 (900000 kHz, 0)
[   15.008863] acpi-cpufreq: Called after resume, resetting to P0
[   15.008865] cpufreq-core: notification 0 of frequency transition to 900000 kHz
[   15.008867] userspace: saving cpu_cur_freq of cpu 1 to be 900000 kHz
[   15.009400] cpufreq-core: notification 1 of frequency transition to 900000 kHz
[   15.009402] userspace: saving cpu_cur_freq of cpu 1 to be 900000 kHz
[   15.009404] cpufreq-core: governor: change or update limits
[   15.009405] cpufreq-core: __cpufreq_governor for CPU 1, event 3
[   15.009407] performance: setting to 900000 kHz because of event 3
[   15.009409] cpufreq-core: target for CPU 1: 900000 kHz, relation 1
[   15.009410] acpi-cpufreq: acpi_cpufreq_target 900000 (1)
[   15.009412] freq-table: request for target 900000 kHz (relation: 1) for cpu 1
[   15.009414] freq-table: target is 0 (900000 kHz, 0)
[   15.009415] acpi-cpufreq: Already at target state (P0)
[   15.009417] cpufreq-core: initialization complete
[   15.009419] cpufreq-core: driver acpi-cpufreq up and running
[   17.396767] **WARNING** I2C adapter driver [NVIDIA I2C Device] forgot to
specify physical device; fix it!
[   17.397055] i2c_adapter i2c-1: SMBus Quick command not supported, can't probe
for chips
[   17.397229] **WARNING** I2C adapter driver [NVIDIA I2C Device] forgot to
specify physical device; fix it!
[   17.397437] i2c_adapter i2c-2: SMBus Quick command not supported, can't probe
for chips
[   17.397610] **WARNING** I2C adapter driver [NVIDIA I2C Device] forgot to
specify physical device; fix it!
[   17.397821] i2c_adapter i2c-3: SMBus Quick command not supported, can't probe
for chips
[   17.763899] apm: BIOS version 1.2 Flags 0x07 (Driver version 1.16ac)
[   17.763903] apm: disabled - APM is not SMP safe.
[   19.368646] cpufreq-core: setting new policy for CPU 0: 600000 - 900000 kHz
[   19.368650] acpi-cpufreq: acpi_cpufreq_verify
[   19.368652] freq-table: request for verification of policy (600000 - 900000
kHz) for cpu 0
[   19.368654] freq-table: verification lead to (600000 - 900000 kHz) for cpu 0
[   19.369082] acpi-cpufreq: acpi_cpufreq_verify
[   19.369084] freq-table: request for verification of policy (600000 - 900000
kHz) for cpu 0
[   19.369086] freq-table: verification lead to (600000 - 900000 kHz) for cpu 0
[   19.369390] cpufreq-core: new min and max freqs are 600000 - 900000 kHz
[   19.369392] cpufreq-core: governor switch
[   19.369393] cpufreq-core: __cpufreq_governor for CPU 0, event 2
[   19.369395] cpufreq-core: __cpufreq_governor for CPU 0, event 1
[   19.369769] cpufreq-core: governor: change or update limits
[   19.369771] cpufreq-core: __cpufreq_governor for CPU 0, event 3
[   19.369976] cpufreq-core: setting new policy for CPU 1: 600000 - 900000 kHz
[   19.369978] acpi-cpufreq: acpi_cpufreq_verify
[   19.369980] freq-table: request for verification of policy (600000 - 900000
kHz) for cpu 1
[   19.369982] freq-table: verification lead to (600000 - 900000 kHz) for cpu 1
[   19.370375] acpi-cpufreq: acpi_cpufreq_verify
[   19.370377] freq-table: request for verification of policy (600000 - 900000
kHz) for cpu 1
[   19.370379] freq-table: verification lead to (600000 - 900000 kHz) for cpu 1
[   19.370667] cpufreq-core: new min and max freqs are 600000 - 900000 kHz
[   19.370669] cpufreq-core: governor switch
[   19.370670] cpufreq-core: __cpufreq_governor for CPU 1, event 2
[   19.370672] cpufreq-core: __cpufreq_governor for CPU 1, event 1
[   19.371005] cpufreq-core: governor: change or update limits
[   19.371007] cpufreq-core: __cpufreq_governor for CPU 1, event 3
[   19.378934] cpufreq-core: setting new policy for CPU 0: 600000 - 900000 kHz
[   19.378937] acpi-cpufreq: acpi_cpufreq_verify
[   19.378938] freq-table: request for verification of policy (600000 - 900000
kHz) for cpu 0
[   19.378941] freq-table: verification lead to (600000 - 900000 kHz) for cpu 0
[   19.379390] acpi-cpufreq: acpi_cpufreq_verify
[   19.379392] freq-table: request for verification of policy (600000 - 900000
kHz) for cpu 0
[   19.379394] freq-table: verification lead to (600000 - 900000 kHz) for cpu 0
[   19.379682] cpufreq-core: new min and max freqs are 600000 - 900000 kHz
[   19.379684] cpufreq-core: governor switch
[   19.379686] cpufreq-core: __cpufreq_governor for CPU 0, event 2
[   19.379936] cpufreq-core: __cpufreq_governor for CPU 0, event 1
[   19.380032] userspace: managing cpu 0 started (600000 - 900000 kHz, currently
900000 kHz)
[   19.380034] cpufreq-core: governor: change or update limits
[   19.380035] cpufreq-core: __cpufreq_governor for CPU 0, event 3
[   19.380323] userspace: limit event for cpu 0: 600000 - 900000 kHz,currently
900000 kHz, last set to 900000 kHz
[   19.380326] cpufreq-core: target for CPU 0: 900000 kHz, relation 0
[   19.380327] acpi-cpufreq: acpi_cpufreq_target 900000 (0)
[   19.380329] freq-table: request for target 900000 kHz (relation: 0) for cpu 0
[   19.380331] freq-table: target is 0 (900000 kHz, 0)
[   19.380332] acpi-cpufreq: Already at target state (P0)
[   19.380951] cpufreq-core: setting new policy for CPU 1: 600000 - 900000 kHz
[   19.380953] acpi-cpufreq: acpi_cpufreq_verify
[   19.380955] freq-table: request for verification of policy (600000 - 900000
kHz) for cpu 1
[   19.380957] freq-table: verification lead to (600000 - 900000 kHz) for cpu 1
[   19.381351] acpi-cpufreq: acpi_cpufreq_verify
[   19.381354] freq-table: request for verification of policy (600000 - 900000
kHz) for cpu 1
[   19.381356] freq-table: verification lead to (600000 - 900000 kHz) for cpu 1
[   19.381644] cpufreq-core: new min and max freqs are 600000 - 900000 kHz
[   19.381645] cpufreq-core: governor switch
[   19.381647] cpufreq-core: __cpufreq_governor for CPU 1, event 2
[   19.381908] cpufreq-core: __cpufreq_governor for CPU 1, event 1
[   19.382002] userspace: managing cpu 1 started (600000 - 900000 kHz, currently
900000 kHz)
[   19.382004] cpufreq-core: governor: change or update limits
[   19.382006] cpufreq-core: __cpufreq_governor for CPU 1, event 3
[   19.382295] userspace: limit event for cpu 1: 600000 - 900000 kHz,currently
900000 kHz, last set to 900000 kHz
[   19.382297] cpufreq-core: target for CPU 1: 900000 kHz, relation 0
[   19.382299] acpi-cpufreq: acpi_cpufreq_target 900000 (1)
[   19.382301] freq-table: request for target 900000 kHz (relation: 0) for cpu 1
[   19.382303] freq-table: target is 0 (900000 kHz, 0)
[   19.382304] acpi-cpufreq: Already at target state (P0)
[   19.586176] Bluetooth: Core ver 2.11
[   19.586221] NET: Registered protocol family 31
[   19.586223] Bluetooth: HCI device and connection manager initialized
[   19.586225] Bluetooth: HCI socket layer initialized
[   19.604477] Bluetooth: L2CAP ver 2.8
[   19.604479] Bluetooth: L2CAP socket layer initialized
[   19.749634] Bluetooth: RFCOMM socket layer initialized
[   19.749641] Bluetooth: RFCOMM TTY layer initialized
[   19.749642] Bluetooth: RFCOMM ver 1.8
[   20.384539] userspace: cpufreq_set for cpu 0, freq 600000 kHz
[   20.384769] cpufreq-core: target for CPU 0: 600000 kHz, relation 0
[   20.384772] acpi-cpufreq: acpi_cpufreq_target 600000 (0)
[   20.384774] freq-table: request for target 600000 kHz (relation: 0) for cpu 0
[   20.384776] freq-table: target is 1 (600000 kHz, 1)
[   20.384778] cpufreq-core: notification 0 of frequency transition to 600000 kHz
[   20.384781] userspace: saving cpu_cur_freq of cpu 0 to be 600000 kHz
[   20.386497] cpufreq-core: notification 1 of frequency transition to 600000 kHz
[   20.386499] userspace: saving cpu_cur_freq of cpu 0 to be 600000 kHz
[   21.388132] userspace: cpufreq_set for cpu 1, freq 600000 kHz

(Sorry if that's too much information.)



Steps to reproduce:

Enable cpufreq on he 2.6.20-rc5 kernel with my hardware.

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Re: [Bug 7866] New: cpufreq fails to correctly identify Intel Conroe operating frequencies

[Christian Unger]

>            Summary: cpufreq fails to correctly identify Intel Conroe
>                     operating frequencies
> Intel Conroe E6660  <at>  2.4ghz
> 
> cat /proc/cpuinfo 
> processor       : 0
> vendor_id       : GenuineIntel
> cpu family      : 6
> model           : 15
> model name      : Intel(R) Core(TM)2 CPU          6600   <at>  2.40GHz
> stepping        : 6
> cpu MHz         : 600.000
> cache size      : 4096 KB
> physical id     : 0
> siblings        : 2
> core id         : 0
> cpu cores       : 2
> 


Hello there

different hardware here:
MOBO GA-965P-DS3
uname -a :
Linux swamp-monkey 2.6.19-gentoo-r4 #1 SMP Sat Dec 30 10:42:07 UTC 2006 x86_64
Intel(R) Core(TM)2 CPU          6600  @ 2.40GHz GenuineIntel GNU/Linux

chakkerz@swamp-monkey ~ $ cat /etc/sabayon-release
Sabayon Linux x86-64 3.25


Exactly the same symptom:

Workaround: Disable EIST in the BIOS - causes CPU to run at full speed.
Testing in Windows XP with Intel Thermal Analysis Tool indicates that although
the CPU Frequency remains up, power is still cut to the CPU, causing the CPU
temperature to drop.

NOTE: my CPU is overclocked. (which makes this a really ironic bug)

Also: Although my kernel is an older revision, it contains 2.6.20 backports.