[mythtv-users] Powering up hidden FE

Thomas Boehm mythtv-users at lists.boehmi.net
Mon Jan 2 21:59:11 UTC 2012


Brian J. Murrell wrote:
> On 11-12-26 10:12 PM, Joey Morris wrote:
>>
>>   echo enabled > /sys/devices/pci0000:00/0000:00:1a.1/usb4/4-1/4-1:1.0/rc/rc0/input4/../power/wakeup
> 
> This seems to always yield:
> 
> # echo enabled > /sys/devices/pci0000\:00/0000\:00\:10.1/usb3/3-1/3-1\:1.0/rc/rc0/input10/../power/wakeup
> bash: echo: write error: Invalid argument
> 
> for every device I've tried.  :-(

The path seems to be wrong. Firstly the ".." looks wrong and secondly
the path on my Ubuntu system looks more like

/sys/devices/pci0000\:00/0000\:00\:10.1/power/wakeup

There are no folders called usb* in /sys/devices/pci0000\:00/*/ on my system


This is how it works on my FE:

Get the ID of your USB device

~# lsusb

...

Bus 003 Device 002: ID 0471:0815 Philips eHome Infrared Receiver

...

Get the port details

~# grep 0815 /sys/bus/usb/devices/*/idProduct

/sys/bus/usb/devices/3-1/idProduct:0815

In my case it's port 3-1

Check the state of this port

~# cat /sys/bus/usb/devices/3-1/power/wakeup

disabled

If it's disabled, add the following into your /etc/rc.local before the
"exit 0" line

echo enabled > /sys/bus/usb/devices/3-1/power/wakeup

HTH
Thomas


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