Arch Linux

enricostn

Member

Registered: 2011-08-09

Posts: 57

No fan speed control on HP dv6

Hi,

it seems to me that after latest Arch updates my HP laptop's fans are a bit more noisy. Just to check it I start looking for fan speed info and i discovered that in

/sys/class/hwmon/hwmon0/device/

the expected file fan1_input doesn't exist and I cannot find it all over the system.

This is my sensors-detect output:

# sensors-detect revision 5984 (2011-07-10 21:22:53 +0200)

# System: Hewlett-Packard HP Pavilion dv6 Notebook PC (laptop)

# Board: Hewlett-Packard 163C



This program will help you determine which kernel modules you need

to load to use lm_sensors most effectively. It is generally safe

and recommended to accept the default answers to all questions,

unless you know what you're doing.



Some south bridges, CPUs or memory controllers contain embedded sensors.

Do you want to scan for them? This is totally safe. (YES/no): y

Module cpuid loaded successfully.

Silicon Integrated Systems SIS5595...                       No

VIA VT82C686 Integrated Sensors...                          No

VIA VT8231 Integrated Sensors...                            No

AMD K8 thermal sensors...                                   No

AMD Family 10h thermal sensors...                           No

AMD Family 11h thermal sensors...                           No

AMD Family 12h and 14h thermal sensors...                   No

AMD Family 15h thermal sensors...                           No

AMD Family 15h power sensors...                             No

Intel digital thermal sensor...                             Success!

    (driver `coretemp')

Intel AMB FB-DIMM thermal sensor...                         No

VIA C7 thermal sensor...                                    No

VIA Nano thermal sensor...                                  No



Some Super I/O chips contain embedded sensors. We have to write to

standard I/O ports to probe them. This is usually safe.

Do you want to scan for Super I/O sensors? (YES/no): y

Probing for Super-I/O at 0x2e/0x2f

Trying family `National Semiconductor/ITE'...               No

Trying family `SMSC'...                                     No

Trying family `VIA/Winbond/Nuvoton/Fintek'...               No

Trying family `ITE'...                                      No

Probing for Super-I/O at 0x4e/0x4f

Trying family `National Semiconductor/ITE'...               No

Trying family `SMSC'...                                     No

Trying family `VIA/Winbond/Nuvoton/Fintek'...               No

Trying family `ITE'...                                      No



Some hardware monitoring chips are accessible through the ISA I/O ports.

We have to write to arbitrary I/O ports to probe them. This is usually

safe though. Yes, you do have ISA I/O ports even if you do not have any

ISA slots! Do you want to scan the ISA I/O ports? (YES/no): y

Probing for `National Semiconductor LM78' at 0x290...       No

Probing for `National Semiconductor LM79' at 0x290...       No

Probing for `Winbond W83781D' at 0x290...                   No

Probing for `Winbond W83782D' at 0x290...                   No



Lastly, we can probe the I2C/SMBus adapters for connected hardware

monitoring devices. This is the most risky part, and while it works

reasonably well on most systems, it has been reported to cause trouble

on some systems.

Do you want to probe the I2C/SMBus adapters now? (YES/no): y

Using driver `i2c-i801' for device 0000:00:1f.3: Intel 3400/5 Series (PCH)



Next adapter: SMBus I801 adapter at 5000 (i2c-0)

Do you want to scan it? (YES/no/selectively): y

Client found at address 0x1c

Probing for `Texas Instruments TMP421'...                   No

Probing for `SMSC EMC1072'...                               No

Probing for `SMSC EMC1073'...                               No

Probing for `SMSC EMC1074'...                               No

Probing for `ST STTS424'...                                 No

Probing for `ST STTS424E'...                                No

Probing for `NXP SE97/SE97B'...                             No

Probing for `NXP SE98'...                                   No

Probing for `Analog Devices ADT7408'...                     No

Probing for `IDT TS3000/TSE2002'...                         No

Probing for `Maxim MAX6604'...                              No

Probing for `Microchip MCP98242'...                         No

Probing for `Microchip MCP98243'...                         No

Probing for `Microchip MCP9843'...                          No

Probing for `ON CAT6095/CAT34TS02'...                       No

Client found at address 0x52

Probing for `Analog Devices ADM1033'...                     No

Probing for `Analog Devices ADM1034'...                     No

Probing for `SPD EEPROM'...                                 Yes

    (confidence 8, not a hardware monitoring chip)



Next adapter: i915 gmbus disabled (i2c-1)

Do you want to scan it? (YES/no/selectively): y



Next adapter: i915 gmbus ssc (i2c-2)

Do you want to scan it? (YES/no/selectively): y



Next adapter: i915 GPIOB (i2c-3)

Do you want to scan it? (YES/no/selectively): y



Next adapter: i915 gmbus vga (i2c-4)

Do you want to scan it? (YES/no/selectively): y



Next adapter: i915 GPIOA (i2c-5)

Do you want to scan it? (YES/no/selectively): y



Next adapter: i915 gmbus panel (i2c-6)

Do you want to scan it? (YES/no/selectively): y

Client found at address 0x4f

Probing for `National Semiconductor LM75'...                No

Probing for `National Semiconductor LM75A'...               No

Probing for `Dallas Semiconductor DS75'...                  No

Probing for `Dallas Semiconductor DS1621/DS1631'...         No

Probing for `Maxim MAX6642'...                              No

Probing for `Texas Instruments TMP421'...                   No

Probing for `Texas Instruments TMP422'...                   No

Probing for `Maxim MAX6633/MAX6634/MAX6635'...              No

Probing for `NXP/Philips SA56004'...                        No

Client found at address 0x50

Probing for `Analog Devices ADM1033'...                     No

Probing for `Analog Devices ADM1034'...                     No

Probing for `SPD EEPROM'...                                 No

Probing for `EDID EEPROM'...                                Yes

    (confidence 8, not a hardware monitoring chip)



Next adapter: i915 GPIOC (i2c-7)

Do you want to scan it? (YES/no/selectively): y

Client found at address 0x4f

Probing for `National Semiconductor LM75'...                No

Probing for `National Semiconductor LM75A'...               No

Probing for `Dallas Semiconductor DS75'...                  No

Probing for `Dallas Semiconductor DS1621/DS1631'...         No

Probing for `Maxim MAX6642'...                              No

Probing for `Texas Instruments TMP421'...                   No

Probing for `Texas Instruments TMP422'...                   No

Probing for `Maxim MAX6633/MAX6634/MAX6635'...              No

Probing for `NXP/Philips SA56004'...                        No

Client found at address 0x50

Probing for `Analog Devices ADM1033'...                     No

Probing for `Analog Devices ADM1034'...                     No

Probing for `SPD EEPROM'...                                 No

Probing for `EDID EEPROM'...                                Yes

    (confidence 8, not a hardware monitoring chip)



Next adapter: i915 gmbus dpc (i2c-8)

Do you want to scan it? (YES/no/selectively): y



Next adapter: i915 GPIOD (i2c-9)

Do you want to scan it? (YES/no/selectively): y



Next adapter: i915 gmbus dpb (i2c-10)

Do you want to scan it? (YES/no/selectively): y



Next adapter: i915 GPIOE (i2c-11)

Do you want to scan it? (YES/no/selectively): y



Next adapter: i915 gmbus reserved (i2c-12)

Do you want to scan it? (YES/no/selectively): y



Next adapter: i915 gmbus dpd (i2c-13)

Do you want to scan it? (YES/no/selectively): y



Next adapter: i915 GPIOF (i2c-14)

Do you want to scan it? (YES/no/selectively): y



Next adapter: Radeon i2c bit bus 0x90 (i2c-15)

Do you want to scan it? (YES/no/selectively): y



Next adapter: Radeon i2c bit bus 0x91 (i2c-16)

Do you want to scan it? (YES/no/selectively): y



Next adapter: Radeon i2c bit bus 0x92 (i2c-17)

Do you want to scan it? (YES/no/selectively): y



Next adapter: Radeon i2c bit bus 0x93 (i2c-18)

Do you want to scan it? (YES/no/selectively): y



Next adapter: Radeon i2c bit bus 0x94 (i2c-19)

Do you want to scan it? (YES/no/selectively): y



Next adapter: Radeon i2c bit bus 0x95 (i2c-20)

Do you want to scan it? (YES/no/selectively): y



Next adapter: Radeon i2c bit bus 0x96 (i2c-21)

Do you want to scan it? (YES/no/selectively): y



Next adapter: Radeon i2c bit bus 0x97 (i2c-22)

Do you want to scan it? (YES/no/selectively): y



Now follows a summary of the probes I have just done.

Just press ENTER to continue: 



Driver `coretemp':

  * Chip `Intel digital thermal sensor' (confidence: 9)



Do you want to overwrite /etc/conf.d/lm_sensors? (YES/no): y

You should now start the lm_sensors service to load the required

kernel modules.



Unloading cpuid... OK

thank you for the help.

enricostn

Member

Registered: 2011-08-09

Posts: 57

Re: No fan speed control on HP dv6

No way for a solution or just a hint?

Please...

alinares

Member

Registered: 2012-04-13

Posts: 2

Re: No fan speed control on HP dv6

Did you find a solution? I have a dv6 also with the same problem.

enricostn

Member

Registered: 2011-08-09

Posts: 57

Re: No fan speed control on HP dv6

Hi alinares,

finally I discovered that in the BIOS exists a parameter like "always on fans"... I turned it off and the fans now are working fine.

Tell me if you don't find it so I'll restart my PC looking for the correct parameter name.

Bye

alinares

Member

Registered: 2012-04-13

Posts: 2

Re: No fan speed control on HP dv6

Didn't work for me. The fans are not at max speed, but still running... and making noise even when the laptop is idle. The cpu temp is  52°C.

Thanks anyways.

Bordee

Member

Registered: 2011-01-03

Posts: 23

Re: No fan speed control on HP dv6

I have a hp dv6t with switchable graphics (i7 integrated graphics + Radeon). When I first got the laptop, I had problems with several Linux distros where the fans were going at full blast and the laptop got really hot. The problem is that AMD switchable graphics haven't really been supported in Linux. The solution I found was to disable the Radeon card completely, and just run off of the Intel integrated graphics. Upon disabling the Radeon card, the fans stopped blowing like a hair dryer, the laptop wasn't as hot, and the battery life increase substantially.

Follow the guide in this wiki on how to disable the Radeon card (under ATI Dynamic Switchable Graphics):

https://wiki.archlinux.org/index.php/Hybrid_graphics

Also, you might consider trying out some kernel parameters to downclock your intel integrated graphics:

http://www.phoronix.com/scan.php?page=a … ower&num=1