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mebitek
November 30th, 2010, 05:48 PM
Hello I have an i5 M430 cpu on my HP dv6 laptop.
My question is if i5 cpu are fully supported on ubuntu (generally in linux).
I ask this cause my cpu seems to not work properly.

1 the kernel detects only 1 physical core, not 2 as intel specs (http://ark.intel.com/Product.aspx?id=43537). In fact I have 4 logical cores (threads) and just one physical as dmesg says:

[ 0.000213] CPU: Physical Processor ID: 0
[ 0.000214] CPU: Processor Core ID: 0
[ 0.000229] mce: CPU supports 9 MCE banks
[ 0.000240] CPU0: Thermal monitoring enabled (TM1)
........
[ 0.061392] CPU0: Intel(R) Core(TM) i5 CPU M 430 @ 2.27GHz stepping 02
[ 0.167920] Booting Node 0, Processors #1
[ 0.178107] Initializing CPU#1
[ 0.260740] #2
[ 0.270956] Initializing CPU#2
[ 0.353550] #3
[ 0.363765] Initializing CPU#3
[ 0.444415] Brought up 4 CPUs
[ 0.444418] Total of 4 processors activated (18087.19 BogoMIPS).

2 in /proc/acpi/processor I get:

mebitek@marmidha:/proc/acpi/processor$ cat CPU*/info
processor id: 0
acpi id: 1
bus mastering control: yes
power management: no
throttling control: yes
limit interface: yes
processor id: 1
acpi id: 2
bus mastering control: yes
power management: no
throttling control: yes
limit interface: yes
processor id: 2
acpi id: 3
bus mastering control: yes
power management: no
throttling control: yes
limit interface: yes
processor id: 3
acpi id: 4
bus mastering control: yes
power management: no
throttling control: yes
limit interface: yes

so I do not have cpu power managment that means a poor battery life (I have about 1h 20mins)

3 Intel Corporation 5 Series/3400 Series chipset do not have sensors. I used a patch found on lm_sensors page to get support for P55 chipset and now I get:

intel-pci-00fe
Adapter: PCI adapter
thermal sensor: +122.0C
core 0: +55.5C
processor: +58.0C
internal temperature: +62.0C

really strange value for thermal sensor.

4 I have no fan. I can load the module but /proac/acpi/fan directory is empty.

5 i7z reports good values for number of physical cores, turbo mode and frequencies.

I notice that I have disassebled my DSDT, correct all errors and warnigns (I alsa tried to merge DSDT and SSDT table with acpi_no_auto_ssdt) but what I get is only a kernel panic at boot.

Someone can help me?
thx a lot
Claudio