Re: Cannot shutdown power use from built in webcam in thinkpad T530 questions]
On Mon, Sep 23, 2013 at 10:21:23AM +0200, Oleksij Rempel wrote: Understood, just making sure this was still potentially useful considering what I found out since my last message. Which version of powertop are you actually using? None of current The latest, i.e. 2.4. versions would show you Watt usage for devices. Sure it does :) Summary: 3182.2 wakeups/second, 82.5 GPU ops/seconds, 0.0 VFS ops/sec and 33.5% Power est. Usage Events/sCategory Description 9.82 W100.0% Device USB device: Yubico Yubike 2.67 W 4.1 ms/s 43.2Process/usr/bin/pulseaudio --sta 2.58 W100.0% Device USB device: Integrated Ca 2.35 W100.0% Device USB device: BCM20702A0 (B 2.32 W 32.9% Device Display backlight 1.39 W100.0% Device Radio device: btusb 343 mW100.0% Device Radio device: thinkpad_ac Now, I've found those values to be often wrong or questionable. you can use watch grep . * instead and check fallowing fields: runtime_suspended_time - suspend time. If it is growing device is suspended runtime_active_kids - if not zero, some program use it control - if on then autosuspend is disabled. Understood. 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/ -- To unsubscribe from this list: send the line unsubscribe linux-usb in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: Cannot shutdown power use from built in webcam in thinkpad T530 questions]
Am 28.09.2013 20:08, schrieb Marc MERLIN:
On Mon, Sep 23, 2013 at 10:21:23AM +0200, Oleksij Rempel wrote:
Understood, just making sure this was still potentially useful considering
what I found out since my last message.
Which version of powertop are you actually using? None of current
The latest, i.e. 2.4.
versions would show you Watt usage for devices.
Sure it does :)
Summary: 3182.2 wakeups/second, 82.5 GPU ops/seconds, 0.0 VFS ops/sec and
33.5%
Power est. Usage Events/sCategory Description
9.82 W100.0% Device USB device: Yubico
Yubike
2.67 W 4.1 ms/s 43.2Process/usr/bin/pulseaudio
--sta
2.58 W100.0% Device USB device: Integrated
Ca
2.35 W100.0% Device USB device: BCM20702A0
(B
2.32 W 32.9% Device Display backlight
1.39 W100.0% Device Radio device: btusb
343 mW100.0% Device Radio device:
thinkpad_ac
ah ok, i see, you right. In usb.cpp:
double usbdevice::power_usage(struct result_bundle *result, struct
parameter_bundle *bundle)
{
double power;
double factor;
double util;
if (rootport || !cached_valid)
return 0.0;
power = 0;
factor = get_parameter_value(index, bundle);
util = get_result_value(r_index, result);
power += util * factor / 100.0;
return power;
}
but, if i understand it correctly, this values are not provided by usb.
If you start powertop --calibrate it will switch on/off some devices
and measure global power usage.
--
Regards,
Oleksij
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Re: Cannot shutdown power use from built in webcam in thinkpad T530 questions]
Am 22.09.2013 22:36, schrieb Marc MERLIN: On Sun, Sep 22, 2013 at 04:32:08PM -0400, Alan Stern wrote: I'm somehow thinking there is a driver or hardware problem when the device does get stuck in a mode where it won't sleep properly again until the next reboot (just unloading/loading the driver does not fix this). That's quite possible. But if it is a driver problem, wouldn't unloading and reloading the driver fix it? You'd think that but it hasn't so far with this one device. You might get more information from a kernel with CONFIG_USB_DEBUG enabled. Especially if you add #define VERBOSE_DEBUG to drivers/usb/core/driver.c before the first #include line. Do you think thaty would help debug the problem above, or not really? I'm There's no way to know in advance. starting to think that the USB layer is not at fault, although I could be wrong I suppose. You asked for advice on things to try, and I suggested something. That's the best I can do. Understood, just making sure this was still potentially useful considering what I found out since my last message. Which version of powertop are you actually using? None of current versions would show you Watt usage for devices. you can use watch grep . * instead and check fallowing fields: runtime_suspended_time - suspend time. If it is growing device is suspended runtime_active_kids - if not zero, some program use it control - if on then autosuspend is disabled. -- Regards, Oleksij -- To unsubscribe from this list: send the line unsubscribe linux-usb in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: Cannot shutdown power use from built in webcam in thinkpad T530 questions]
On Wed, 18 Sep 2013, Marc MERLIN wrote: Howdy, I have a T530 with a built in webcam that uses the uvcvideo driver. Kernel 3.10.6, but the problem has been there for many kernel versions. From time to time (not always) it shows up at the top of powertop with an unexplained high power use while I'm not using the camera. Powertop says autosuspend is active: Note that tunables says: Good Autosuspend for USB device Integrated Camera [Chicony Electronics Co., Ltd.] Unloading uvcvideo makes no difference. However if I never load uvcvideo and never use the camera after booting the laptop, then the device doesn't use any power. This is better than nothing, but not very desirable since I do use the camera from time to google for video conferencing. Here's the module info gandalfthegreat:/sys/bus/usb/drivers/uvcvideo# l total 0 drwxr-xr-x 2 root root0 Sep 18 17:48 ./ drwxr-xr-x 12 root root0 Sep 17 15:10 ../ lrwxrwxrwx 1 root root0 Sep 18 21:30 3-1.6:1.0 - ../../../../devices/pci:00/:00:1a.0/usb3/3-1/3-1.6/3-1.6:1.0/ lrwxrwxrwx 1 root root0 Sep 18 21:30 3-1.6:1.1 - ../../../../devices/pci:00/:00:1a.0/usb3/3-1/3-1.6/3-1.6:1.1/ --w--- 1 root root 4096 Sep 18 21:30 bind lrwxrwxrwx 1 root root0 Sep 18 21:30 module - ../../../../module/uvcvideo/ -rw-r--r-- 1 root root 4096 Sep 18 21:30 new_id -rw-r--r-- 1 root root 4096 Sep 18 21:30 remove_id --w--- 1 root root 4096 Sep 18 17:48 uevent --w--- 1 root root 4096 Sep 18 21:30 unbind gandalfthegreat:/sys/bus/usb/devices/3-1.6/power# grep . * active_duration:61227648 async:enabled autosuspend:2 autosuspend_delay_ms:2000 connected_duration:66830880 control:auto level:auto persist:1 runtime_active_kids:0 runtime_active_time:18870052 runtime_enabled:enabled runtime_status:active runtime_suspended_time:5324088 runtime_usage:0 This all looks correct. Any ideas? You might get more information from a kernel with CONFIG_USB_DEBUG enabled. Especially if you add #define VERBOSE_DEBUG to drivers/usb/core/driver.c before the first #include line. Alan Stern -- To unsubscribe from this list: send the line unsubscribe linux-usb in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: Cannot shutdown power use from built in webcam in thinkpad T530 questions]
On Sun, Sep 22, 2013 at 12:38:56PM -0400, Alan Stern wrote: gandalfthegreat:/sys/bus/usb/devices/3-1.6/power# grep . * active_duration:61227648 async:enabled autosuspend:2 autosuspend_delay_ms:2000 connected_duration:66830880 control:auto level:auto persist:1 runtime_active_kids:0 runtime_active_time:18870052 runtime_enabled:enabled runtime_status:active runtime_suspended_time:5324088 runtime_usage:0 This all looks correct. Since then, I've confirmed that I don't have the problem some time after reboot. It may be that the device doesn't seem to sleep well after I've used it once. What's interesting, is that I see this when power is plugged in: Power est. Events/sCategory Description 8.18 W100.0% Device USB device: Yubico Yubikey II (Yubico) 8.13 W100.0% Device USB device: Integrated Camera (Chicony Electronics Co., Ltd.) Somehow I know that my Yubikey isn't using 8W, so powertop numbers need to be taken with a grain of salt. Once I go to batteries, I see this: Summary: 760.1 wakeups/second, 718.9 GPU ops/seconds, 0.0 VFS ops/sec and 6.9% CPU use Power est. Usage Events/sCategory Description 8.32 W100.0% Device USB device: Yubico Yubikey II (Yubico) 2.52 W 73.3% Device Display backlight So at least for now, the camera does sleep ok, until later when it probably won't again. I'm somehow thinking there is a driver or hardware problem when the device does get stuck in a mode where it won't sleep properly again until the next reboot (just unloading/loading the driver does not fix this). Any ideas? You might get more information from a kernel with CONFIG_USB_DEBUG enabled. Especially if you add #define VERBOSE_DEBUG to drivers/usb/core/driver.c before the first #include line. Do you think thaty would help debug the problem above, or not really? I'm starting to think that the USB layer is not at fault, although I could be wrong I suppose. 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/ -- To unsubscribe from this list: send the line unsubscribe linux-usb in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: Cannot shutdown power use from built in webcam in thinkpad T530 questions]
On Sun, 22 Sep 2013, Marc MERLIN wrote: On Sun, Sep 22, 2013 at 12:38:56PM -0400, Alan Stern wrote: gandalfthegreat:/sys/bus/usb/devices/3-1.6/power# grep . * active_duration:61227648 async:enabled autosuspend:2 autosuspend_delay_ms:2000 connected_duration:66830880 control:auto level:auto persist:1 runtime_active_kids:0 runtime_active_time:18870052 runtime_enabled:enabled runtime_status:active runtime_suspended_time:5324088 runtime_usage:0 This all looks correct. Since then, I've confirmed that I don't have the problem some time after reboot. It may be that the device doesn't seem to sleep well after I've used it once. What's interesting, is that I see this when power is plugged in: Power est. Events/sCategory Description 8.18 W100.0% Device USB device: Yubico Yubikey II (Yubico) 8.13 W100.0% Device USB device: Integrated Camera (Chicony Electronics Co., Ltd.) Somehow I know that my Yubikey isn't using 8W, so powertop numbers need to be taken with a grain of salt. I don't know where powertop gets its numbers from. Perhaps it uses the value reported by the device (bMaxPower). That value is only a maximum; it doesn't change to reflect the actual usage. Once I go to batteries, I see this: Summary: 760.1 wakeups/second, 718.9 GPU ops/seconds, 0.0 VFS ops/sec and 6.9% CPU use Power est. Usage Events/sCategory Description 8.32 W100.0% Device USB device: Yubico Yubikey II (Yubico) 2.52 W 73.3% Device Display backlight So at least for now, the camera does sleep ok, until later when it probably won't again. I'm somehow thinking there is a driver or hardware problem when the device does get stuck in a mode where it won't sleep properly again until the next reboot (just unloading/loading the driver does not fix this). That's quite possible. But if it is a driver problem, wouldn't unloading and reloading the driver fix it? You might get more information from a kernel with CONFIG_USB_DEBUG enabled. Especially if you add #define VERBOSE_DEBUG to drivers/usb/core/driver.c before the first #include line. Do you think thaty would help debug the problem above, or not really? I'm There's no way to know in advance. starting to think that the USB layer is not at fault, although I could be wrong I suppose. You asked for advice on things to try, and I suggested something. That's the best I can do. Alan Stern -- To unsubscribe from this list: send the line unsubscribe linux-usb in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: Cannot shutdown power use from built in webcam in thinkpad T530 questions]
On Sun, Sep 22, 2013 at 04:32:08PM -0400, Alan Stern wrote: I'm somehow thinking there is a driver or hardware problem when the device does get stuck in a mode where it won't sleep properly again until the next reboot (just unloading/loading the driver does not fix this). That's quite possible. But if it is a driver problem, wouldn't unloading and reloading the driver fix it? You'd think that but it hasn't so far with this one device. You might get more information from a kernel with CONFIG_USB_DEBUG enabled. Especially if you add #define VERBOSE_DEBUG to drivers/usb/core/driver.c before the first #include line. Do you think thaty would help debug the problem above, or not really? I'm There's no way to know in advance. starting to think that the USB layer is not at fault, although I could be wrong I suppose. You asked for advice on things to try, and I suggested something. That's the best I can do. Understood, just making sure this was still potentially useful considering what I found out since my last message. Thanks for your help, 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/ -- To unsubscribe from this list: send the line unsubscribe linux-usb in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: Cannot shutdown power use from built in webcam in thinkpad T530 questions]
On Thu, Sep 19, 2013 at 12:35 PM, Marc MERLIN m...@merlins.org wrote: gandalfthegreat:/sys/bus/usb/devices/3-1.6/power# grep . * active_duration:61227648 async:enabled autosuspend:2 autosuspend_delay_ms:2000 connected_duration:66830880 control:auto level:auto persist:1 runtime_active_kids:0 runtime_active_time:18870052 runtime_enabled:enabled runtime_status:active runtime_suspended_time:5324088 runtime_usage:0 The uvc device should have been put in auto-suspend state if no application is using the device. You can check if there is application which is using the device by 'lsof | grep /dev/video'. Also looks power usage estimation of 'power top' should be used when battery provides power, and the data isn't correct if power is provided from power adapter, if I remember correctly. Thanks, -- Ming Lei -- To unsubscribe from this list: send the line unsubscribe linux-usb in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Cannot shutdown power use from built in webcam in thinkpad T530 questions]
Howdy, I have a T530 with a built in webcam that uses the uvcvideo driver. Kernel 3.10.6, but the problem has been there for many kernel versions. From time to time (not always) it shows up at the top of powertop with an unexplained high power use while I'm not using the camera. Powertop says autosuspend is active: Note that tunables says: Good Autosuspend for USB device Integrated Camera [Chicony Electronics Co., Ltd.] Unloading uvcvideo makes no difference. However if I never load uvcvideo and never use the camera after booting the laptop, then the device doesn't use any power. This is better than nothing, but not very desirable since I do use the camera from time to google for video conferencing. Here's the module info gandalfthegreat:/sys/bus/usb/drivers/uvcvideo# l total 0 drwxr-xr-x 2 root root0 Sep 18 17:48 ./ drwxr-xr-x 12 root root0 Sep 17 15:10 ../ lrwxrwxrwx 1 root root0 Sep 18 21:30 3-1.6:1.0 - ../../../../devices/pci:00/:00:1a.0/usb3/3-1/3-1.6/3-1.6:1.0/ lrwxrwxrwx 1 root root0 Sep 18 21:30 3-1.6:1.1 - ../../../../devices/pci:00/:00:1a.0/usb3/3-1/3-1.6/3-1.6:1.1/ --w--- 1 root root 4096 Sep 18 21:30 bind lrwxrwxrwx 1 root root0 Sep 18 21:30 module - ../../../../module/uvcvideo/ -rw-r--r-- 1 root root 4096 Sep 18 21:30 new_id -rw-r--r-- 1 root root 4096 Sep 18 21:30 remove_id --w--- 1 root root 4096 Sep 18 17:48 uevent --w--- 1 root root 4096 Sep 18 21:30 unbind gandalfthegreat:/sys/bus/usb/devices/3-1.6/power# grep . * active_duration:61227648 async:enabled autosuspend:2 autosuspend_delay_ms:2000 connected_duration:66830880 control:auto level:auto persist:1 runtime_active_kids:0 runtime_active_time:18870052 runtime_enabled:enabled runtime_status:active runtime_suspended_time:5324088 runtime_usage:0 powertop 2.4 output: - The battery reports a discharge rate of 18.4 W The estimated remaining time is 4 hours, 18 minutes Summary: 657.6 wakeups/second, 28.4 GPU ops/seconds, 0.0 VFS ops/sec and 9.3% CPU use Power est. Usage Events/s Category Description 12.2 W100.0% Device USB device: Integrated Camera (Chicony Electronics Co., Ltd.) 997 mW 60.0% Device Display backlight 76.1 mW 34.9 µs/s 34.8 Process[rcu_preempt] 23.1 mW 1.5 ms/s 16.5 Processxfce4-terminal -T window11 --role=window11 9.20 mW 59.0 ms/s 347.4 Process/usr/bin/enlightenment - Now after I resumed from S3 sleep, this time I'm seeing 210 mW100.0% Device USB device: Integrated Camera (Chicony Electronics Co., Ltd.) While the 100% is bad, 210mW isn't as bad compared to 12W below (I'm sure it's not really 12W). Any ideas? 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/ | PGP 1024R/763BE901 -- To unsubscribe from this list: send the line unsubscribe linux-usb in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
