* Re: [Powertop] Lenovo T530 battery saving
@ 2013-08-13 17:22 Srinivas Pandruvada
0 siblings, 0 replies; 3+ messages in thread
From: Srinivas Pandruvada @ 2013-08-13 17:22 UTC (permalink / raw)
To: powertop
[-- Attachment #1: Type: text/plain, Size: 2241 bytes --]
On 08/13/2013 09:36 AM, Marc MERLIN wrote:
> Mmmh, is there anyone here? Should I be sending this elsewhere?
>
> Thanks,
> Marc
>
> On Fri, Aug 02, 2013 at 10:27:38AM -0700, Marc MERLIN wrote:
>> Both powertop 2.1 and now powertop 2.4 tell me my onboard laptop camera
>> is burning battery.
>> This is a lenovo T530 with kernel 3.9.5.
>>
>> However, I've unloaded the module and that doesn't help:
>>
>> To save battery, I do:
>> ifconfig eth0 down
>> for i in videobuf2_core uvcvideo videodev e1000e
>> do
>> rmmod $i
>> done
>>
>>
>> The battery reports a discharge rate of 14.5 W
>> The estimated remaining time is 2 hours, 8 minutes
>>
>> Summary: 681.7 wakeups/second, 2.0 GPU ops/seconds, 0.0 VFS ops/sec and 19.4% CPU use
>>
>> Power est. Usage Events/s Category Description
>> 6.13 W 73.3% Device Display backlight
>> 3.08 W 100.0% Device USB device: Integrated Camera (Chicony Electronics Co., Ltd.)
>> 71.2 mW 149.9 ms/s 240.0 Process /usr/bin/enlightenment
>> 24.0 mW 175.6 µs/s 144.5 Timer menu_hrtimer_notify
>> 12.5 mW 1.0 ms/s 75.5 kWork od_dbs_timer
>> 12.1 mW 98.3 µs/s 72.9 Process [kworker/2:0]
>>
>>
>> Yet, powertop is still showing this below which is still visible in lsusb after I unload
>> uvcvideo:
>> Bus 003 Device 004: ID 04f2:b2ea Chicony Electronics Co., Ltd
Unload module doesn't stop usb to enumerate the device. You should check
with lsmod | grep "your module".
It is possible that BIOS power up this camera. So you should check any
driver update for this, which sends some power down command to camera.
>>
>> I often have the same problem with my audio device too:
>> 1.88 W 100.0% Device Audio codec alsa:hwC0D0: thinkpad (Realtek)
>>
>> Thankfully unloading some modules seems to fix this:
>> for i in snd_hda_intel snd_hda_codec_realtek snd_hda_codec snd_hwdep; do rmmod $i; done
>>
>> Any idea how I can stop the camera from sucking power since unloading the module isn't enough?
>>
>> Thanks,
>> Marc
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Powertop] Lenovo T530 battery saving
@ 2013-08-13 16:36 Marc MERLIN
0 siblings, 0 replies; 3+ messages in thread
From: Marc MERLIN @ 2013-08-13 16:36 UTC (permalink / raw)
To: powertop
[-- Attachment #1: Type: text/plain, Size: 2141 bytes --]
Mmmh, is there anyone here? Should I be sending this elsewhere?
Thanks,
Marc
On Fri, Aug 02, 2013 at 10:27:38AM -0700, Marc MERLIN wrote:
> Both powertop 2.1 and now powertop 2.4 tell me my onboard laptop camera
> is burning battery.
> This is a lenovo T530 with kernel 3.9.5.
>
> However, I've unloaded the module and that doesn't help:
>
> To save battery, I do:
> ifconfig eth0 down
> for i in videobuf2_core uvcvideo videodev e1000e
> do
> rmmod $i
> done
>
>
> The battery reports a discharge rate of 14.5 W
> The estimated remaining time is 2 hours, 8 minutes
>
> Summary: 681.7 wakeups/second, 2.0 GPU ops/seconds, 0.0 VFS ops/sec and 19.4% CPU use
>
> Power est. Usage Events/s Category Description
> 6.13 W 73.3% Device Display backlight
> 3.08 W 100.0% Device USB device: Integrated Camera (Chicony Electronics Co., Ltd.)
> 71.2 mW 149.9 ms/s 240.0 Process /usr/bin/enlightenment
> 24.0 mW 175.6 µs/s 144.5 Timer menu_hrtimer_notify
> 12.5 mW 1.0 ms/s 75.5 kWork od_dbs_timer
> 12.1 mW 98.3 µs/s 72.9 Process [kworker/2:0]
>
>
> Yet, powertop is still showing this below which is still visible in lsusb after I unload
> uvcvideo:
> Bus 003 Device 004: ID 04f2:b2ea Chicony Electronics Co., Ltd
>
> I often have the same problem with my audio device too:
> 1.88 W 100.0% Device Audio codec alsa:hwC0D0: thinkpad (Realtek)
>
> Thankfully unloading some modules seems to fix this:
> for i in snd_hda_intel snd_hda_codec_realtek snd_hda_codec snd_hwdep; do rmmod $i; done
>
> Any idea how I can stop the camera from sucking power since unloading the module isn't enough?
>
> Thanks,
> Marc
--
"A mouse is a device used to point at the xterm you want to type in" - A.S.R.
Microsoft is to operating systems ....
.... what McDonalds is to gourmet cooking
Home page: http://marc.merlins.org/
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Powertop] Lenovo T530 battery saving
@ 2013-08-02 17:27 Marc MERLIN
0 siblings, 0 replies; 3+ messages in thread
From: Marc MERLIN @ 2013-08-02 17:27 UTC (permalink / raw)
To: powertop
[-- Attachment #1: Type: text/plain, Size: 1907 bytes --]
Both powertop 2.1 and now powertop 2.4 tell me my onboard laptop camera
is burning battery.
This is a lenovo T530 with kernel 3.9.5.
However, I've unloaded the module and that doesn't help:
To save battery, I do:
ifconfig eth0 down
for i in videobuf2_core uvcvideo videodev e1000e
do
rmmod $i
done
The battery reports a discharge rate of 14.5 W
The estimated remaining time is 2 hours, 8 minutes
Summary: 681.7 wakeups/second, 2.0 GPU ops/seconds, 0.0 VFS ops/sec and 19.4% CPU use
Power est. Usage Events/s Category Description
6.13 W 73.3% Device Display backlight
3.08 W 100.0% Device USB device: Integrated Camera (Chicony Electronics Co., Ltd.)
71.2 mW 149.9 ms/s 240.0 Process /usr/bin/enlightenment
24.0 mW 175.6 µs/s 144.5 Timer menu_hrtimer_notify
12.5 mW 1.0 ms/s 75.5 kWork od_dbs_timer
12.1 mW 98.3 µs/s 72.9 Process [kworker/2:0]
Yet, powertop is still showing this below which is still visible in lsusb after I unload
uvcvideo:
Bus 003 Device 004: ID 04f2:b2ea Chicony Electronics Co., Ltd
I often have the same problem with my audio device too:
1.88 W 100.0% Device Audio codec alsa:hwC0D0: thinkpad (Realtek)
Thankfully unloading some modules seems to fix this:
for i in snd_hda_intel snd_hda_codec_realtek snd_hda_codec snd_hwdep; do rmmod $i; done
Any idea how I can stop the camera from sucking power since unloading the module isn't enough?
Thanks,
Marc
--
"A mouse is a device used to point at the xterm you want to type in" - A.S.R.
Microsoft is to operating systems ....
.... what McDonalds is to gourmet cooking
Home page: http://marc.merlins.org/
^ permalink raw reply [flat|nested] 3+ messages in thread
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2013-08-13 17:22 [Powertop] Lenovo T530 battery saving Srinivas Pandruvada
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2013-08-13 16:36 Marc MERLIN
2013-08-02 17:27 Marc MERLIN
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