[ltp] HPET timer on thinkpads?

[Leon Brokken]

Dan,

with boot parameter 'radeon_force_sleep=1' I still get the same power drain.

glxgears shows 4000 fps. That's with color depth 24 and radeonfb
compiled in the kernel.

Cheers, Leon.


Dan Sawyer wrote:
> Leon,
>
> Thank is an interesting number. My T41 uses about 500 mw with the
> radeonfb and 2200 without. Try something else, do you have the program
> 'glxgears'. Run that as root. With the radeon driver I get about
> 1100/sec. With radeonfb it is about 300. I seem to have a choice, use
> of the acceleration H/W or low power suspend. - Dan
>
> Leon Brokken wrote:
>> Thanks Dan, here's the output of the script to check the power drain
>> during suspend:
>>
>> leon@shpritsz:~/myscripts$ cat /var/log/battery.log
>> Fri Oct 26 10:27:35 CEST 2007
>> before: 29500 mWh
>> after: 28380 mWh
>> diff: -1120 mWh
>> seconds: 3250 sec
>> result: -1240 mW
>> Your model seems to be affected.
>>
>> I have added T41 2373-8RG to the 'affected' list on thinkwiki.
>> I will check later if "radeon_force_sleep=1" boot parameter makes a
>> difference.
>>
>> Cheers, Leon.
>>
>>
>> Dan Sawyer wrote:
>>   
>>> Leon,
>>>
>>> Thank you very much. That was very helpful.
>>>
>>> There are a couple of ways you can check. There is a script on the
>>> think pad wike to test power.
>>>
>>> The other is to read the battery charge (cat
>>> /proc/acpi/battery/BAT0/*) suspend the machine for 1 or more hours and
>>> then reread the charge. The difference should be about 500mw per hour.
>>>
>>> Dan
>>>
>>> Leon Brokken wrote:
>>>     
>>>> Hi Dan,
>>>>
>>>> uhm, how would I check that, without waiting for the batt to run out?
>>>>  .config is attached.
>>>>
>>>> Cheers, Leon.
>>>>
>>>>
>>>> Dan Sawyer wrote:
>>>>   
>>>>       
>>>>> Leon,
>>>>>
>>>>> Does the low power suspend work on your configuration? If so can you
>>>>> your .config script.
>>>>>
>>>>> Thanks - Dan
>>>>>
>>>>> Leon Brokken wrote:
>>>>>     
>>>>>         
>>>>>> Hi Shem,
>>>>>>
>>>>>> Shem Multinymous wrote:
>>>>>>   
>>>>>>       
>>>>>>           
>>>>>>> Hi Leon,
>>>>>>>
>>>>>>> On 10/23/07, Leon Brokken <leon.brokken@med.lu.se> wrote:
>>>>>>>   
>>>>>>>     
>>>>>>>         
>>>>>>>             
>>>>>>>> Could that explain the hangs every now and then, when my T41 doesn't
>>>>>>>> accept any input any longer? Processes keep running but there is no info
>>>>>>>> from fan, batt or temp available (judged from conky system monitor).
>>>>>>>> Even the power button doesn't work anymore, I need to power off by
>>>>>>>> unplugging AC and removing the battery.
>>>>>>>>     
>>>>>>>>       
>>>>>>>>           
>>>>>>>>               
>>>>>>> Judging by the symptoms, what you're seeing is a hang of the embedded
>>>>>>> controller (which is running its own firmware independently of the CPU
>>>>>>> and handles all the things you mentioned). This is very dangerous,
>>>>>>> since the EC is also in charge of fan control, battery charging
>>>>>>> control and emergency thermal shutdown.
>>>>>>>
>>>>>>> It's important to find out what causes the EC hangs. How often do you
>>>>>>> see them? Are they correlated with some activity or configuration?
>>>>>>> Does unloading some modules (in particular acpi, hdaps, tp_smapi)
>>>>>>> prevent them? Are you using an old version of tp_smapi?
>>>>>>>   
>>>>>>>     
>>>>>>>         
>>>>>>>             
>>>>>> In the meantime I found out that tp_smapi (v0.32) was not loaded. I have
>>>>>> now added it to rc.modules so it gets loaded at boot and haven't noticed
>>>>>> a problem yet. Before it happpened maybe once every few days, without
>>>>>> any obvious pattern. I have a T41, Slackware-current, kernel 2.6.23.1. I
>>>>>> never noticed similar issues with 2.6.22.
>>>>>>
>>>>>> Anyway, here's some output from dmesg:
>>>>>>
>>>>>> leon@shpritsz:~$ dmesg|grep -i thinkpad_ec
>>>>>> thinkpad_ec: thinkpad_ec 0.32 loaded.
>>>>>>
>>>>>> leon@shpritsz:~$ dmesg|grep -i smapi
>>>>>> tp_smapi 0.32 loading...
>>>>>> tp_smapi successfully loaded (smapi_port=0xb2).
>>>>>>
>>>>>> leon@shpritsz:~$ dmesg|grep -i hdaps
>>>>>> hdaps: initial mode latch is 0x01
>>>>>> hdaps: setting ec_rate=250, filter_order=2
>>>>>> hdaps: fake_data_mode set to 0
>>>>>> hdaps: device successfully initialized.
>>>>>> input: ThinkPad HDAPS joystick emulation as
>>>>>> /devices/platform/hdaps/input/input9
>>>>>> input: ThinkPad HDAPS accelerometer data as
>>>>>> /devices/platform/hdaps/input/input10
>>>>>> hdaps: driver successfully loaded.
>>>>>> leon@shpritsz:~$
>>>>>>
>>>>>> leon@shpritsz:~$ dmesg|grep thinkpad_acpi
>>>>>> thinkpad_acpi: ThinkPad ACPI Extras v0.18-20071013
>>>>>> thinkpad_acpi: http://ibm-acpi.sf.net/
>>>>>> thinkpad_acpi: ThinkPad BIOS 1RETDRWW (3.23 ), EC 1RHT71WW-3.04
>>>>>> thinkpad_acpi: IBM ThinkPad T41
>>>>>> leon@shpritsz:~$
>>>>>>
>>>>>> I'll report back if it happens again.
>>>>>>
>>>>>> Thanks, Leon.
>>>>>>
>>>>>>   
>>>>>>       
>>>>>>           
>>>>   
>>>>       
>>
>>   

-- 
Leon J.S. Brokken
Tumour Biology, Dept. of Laboratory Medicine, Lund University
UMAS, CRC, Entrance 72, House 91, Floor 10, 20502 Malmö, Sweden
Tel. +46(0)40391104, +46(0)739531450 (gsm), Fax +46(0)40391222
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