Hi Sarah,
It is a new-ish kernel;
[antonia] ~ > uname -r
2.6.28.4
but I probably don't have that option enabled. Hmm, that option isn't in
the config;
[root@antonia usb-pm-tool]# grep USB_PM /usr/src/kernels/linux-2.6.28.4/.config
<nothing>
I see there is a CONFIG_USB_SUSPEND, is that the one? I don't have that
enabled. I do have the power directory but it doesn't have those files in
it;
[root@antonia usb-pm-tool]# ls /sys/bus/usb/devices/usb3/3-1/power/
persist wakeup
regards,
Stephen.
On Tue, 24 Feb 2009, Sarah Sharp wrote:
On Wed, Feb 25, 2009 at 12:22:37AM +0100, Stephen J. Gowdy wrote:
Hi Sarah,
I just tried two devices and the script said they failed. However,
there were lots of errors from the script so perhaps I need something
else turned on in my kernel? I've attached the broke-devices file anyway.
Here is the output from the script;
These devices support auto-suspend and can be tested:
1 Bus 003 Device 003: ID 03f0:171d Hewlett-Packard Wireless
(Bluetooth + WLAN) Interface [Integrated Module]
2 Bus 005 Device 002: ID 08ff:2580 AuthenTec, Inc. AES2501
Fingerprint Sensor
Which USB device would you like to test? (0 cancels test): 1
cat: /sys/bus/usb/devices/3-1/power/autosuspend: No such file or directory
cat: /sys/bus/usb/devices/3-1/power/level: No such file or directory
cat: /sys/bus/usb/devices/usb3/power/level: No such file or directory
Enabling auto-suspend. ./usb-pm-tool.sh: line 276:
/sys/bus/usb/devices/3-1/power/autosuspend: No such file or directory
./usb-pm-tool.sh: line 278: /sys/bus/usb/devices/usb3/power/level: No
such file or directory
./usb-pm-tool.sh: line 280: /sys/bus/usb/devices/3-1/power/level: No such
file or directory
Do you have CONFIG_USB_PM enabled? From this output it looks like you
don't have that option enabled. Or maybe you're running on a really old
kernel that doesn't have the level or autosuspend files? Can you run
uname -a?
Sarah
On Tue, 24 Feb 2009, Sarah Sharp wrote:
A couple months ago, I started on a tool to automatically test and enable
automatic power management for USB devices. The USB Power Management tool (USB
PM tool) is now mostly complete, and is available for download:
git clone git://git.moblin.org/usb-pm-tool.git
I would love for people to start testing USB devices with this tool. I haven't
yet found any devices that can't handle selective suspend, so I really need
testers with broken USB devices.
If you run the tool and test a couple devices, please send me these two files:
/etc/usb-pm-tool/pm-enabled-devices.txt
/etc/usb-pm-tool/pm-broken-devices.txt
About the tool:
==============
The script usb-pm-tool.sh will present the user with a list of devices on their
system that are capable of auto-suspend. The user picks a device to test,
follows the prompts on the screen, and reports whether the device works
successfully after the auto-suspend test.
If the device passes the test, the script will prompt the user if they always
want to enable auto-suspend for this device. If so, the script will generate a
udev rule to enable auto-suspend for the device whenever it is plugged in.
Enabling auto-suspend will lower system power consumption, but only if *all* the
USB devices on the system have auto-suspend enabled.
Eventually I want the tool to ask the user if they want to send info about their
device to a centralized server. Then people could download the latest list of
devices that correctly auto-suspend. That's still work in progress.
Thanks for testing!
Sarah Sharp
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--
/------------------------------------+-------------------------\
|Stephen J. Gowdy | CERN Office: 8-1-11|
|http://cern.ch/gowdy/ | CH-1211 Geneva 23 |
| | Switzerland |
|EMail: gowdy@xxxxxxx | Tel: +41 76 487 2215 |
\------------------------------------+-------------------------/
03f0:171d
Notes: Device disconnected during test.
08ff:2580
Notes: Device disconnected during test.
--
/------------------------------------+-------------------------\
|Stephen J. Gowdy | CERN Office: 8-1-11|
|http://cern.ch/gowdy/ | CH-1211 Geneva 23 |
| | Switzerland |
|EMail: gowdy@xxxxxxx | Tel: +41 76 487 2215 |
\------------------------------------+-------------------------/
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