Wednesday, 3 August 2011

USB mouse timeout on Debian

Having to click to wake my USB mouse when it suspends after 2 seconds is irritating.
A little searching turns up a decent explanation:

An immediate solution is to flick the switch:
(as root)
 echo "-1" > /sys/bus/usb/devices/5-2/power/autosuspend_delay_ms

Unfortunately  a USB device comes and goes and won't always be "5-2" making it inconvenient to script.

Now tweaking the module config might seem a solution:
echo "options usbcore autosuspend=-1" >> /etc/modprobe.d/usb_suspend.conf

But it didn't work.   I'm guessing usbcore is compiled in and needs a kernel parameter passed.

To be continued...

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