Re: Tool to enable USB power management

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On Thu, Feb 26, 2009 at 1:33 AM, Shivdas Gujare <shivdas.tech@xxxxxxxxx> wrote:
> Hi Sarah,
>
> I tested my mobile MotorokrE6 with acting as a modem using cdc-acm driver.
> and here is the result, I pasted.
> http://pastie.org/399875
>
> I believe, "rm: cannot remove
> `/etc/udev/rules.d/025_usb-autosuspend.rules': No such file or
> directory", can be avoided for first time user using "rm $UDEV_RULE"
Should have been "rm -f  $UDEV_RULE", in my previous e-mail.
> in vid-pid-to-udev-rule.sh
> Please, comment.
>
> Also, "Type enter once you are actively using the device:", does this
> wait for user to resume this device. I resumed my device using "echo
> AT > /dev/ttyACM0"
> What is the meaning of "Does this device still work? (y/n):", how can
> I make sure?
>
> Rest of the things worked fine. But I am not able to invoke
> auto-generated udev-rule every time, I disconnect and reconnect the
> device. I tried to debug this, and I can manually invoke udev-rule by
> using "sudo udevadm trigger".
> This could be my machine's udev's problem?
>
> Thanks and Regards,
> Shivdas
>
> On Wed, Feb 25, 2009 at 4:35 AM, Sarah Sharp
> <sarah.a.sharp@xxxxxxxxxxxxxxx> 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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