[mythtv-users] power off and on frontend only with remote

[Mario Limonciello]

Leighton,

Indeed /sys/bus/usb/drivers/usb/usb1/power/state is set to 0.

Any attempts to make it be 1 seem to fail however,

root at davey:/sys/devices/pci0000:00/0000:00:10.0/usb1/power# echo 1 > state
bash: echo: write error: Invalid argument

Regards,

Mario

On 10/27/06, Leighton Brough <brough at baremetalsoft.com> wrote:
>
> Mario Limonciello wrote:
> > Leighton,
> >
> > Also, it appears that using the remote to wakeup again in 2.6.17 isn't
> > working. Ubuntu 6.06 was using 2.6.15, and the remote was no trouble
> > to wakeup with.  2.6.17 it appears to not work, even after fiddling
> > with enabling USB1 in /proc/acpi/wakeup.
> >
> > What else did you fumble with?
> >
> > Thanks,
> >
> > Mario
> >
> On 2.6.17 I found I needed to manually set the power state for the USB
> controller. If you have a rummage in /sys you can find the relevant
> stuff for usb1, e.g. "find /sys -name usb1". I think pretty much
> anything this finds will be symlinked to the same device. In the "power"
> directory, there's a file called "state", which you can use to set the
> power state, e.g.:
>
> echo 1 > /sys/bus/usb/drivers/usb/usb1/power/state
>
> (I think "1" was the right state from memory). This ensures that the USB
> controller is powered up enough during suspend-to-ram that it can
> receive the wakeup signal from the remote.
>
> As well as the above, I recall I also needed to unload the USB module
> (uhci_hcd) too - if I recall correctly this was because it would reset
> the power state of the USB controller to 0 on suspend.
>
> Leighton
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