On Mon, 8 Jun 2015 19:57 Stefan G. Weichinger <[email protected]> wrote:
Am 2015-06-08 um 20:25 schrieb J. Roeleveld: > There was a similar thread here before about USB and suspend. Check > that for specifics if in a hurry. Not at computer now to find the > earlier email. didn't find it yet .. but no hurry at all. > Apart from kernel level USB suspend. There are settings in /sys/.... > where you can disable USB suspend on a per-device level. .. as mentioned in: https://wiki.gentoo.org/wiki/USB_Power_Saving ? > I would assume Fedora disables that for keyboards and mice (think > previous thread was about mice getting forgotten) when detected as > such. I browsed their udev rules and found some rules pointing in that direction but none specifically matching the PCI ID of my keyboard and the wildcards ... I am not sure. But they seem to do it specifically, yes -> # cat /sys/module/usbcore/parameters/autosuspend 2 # my keyboard # cat /sys/bus/usb/devices/3-1.6/power/control on I assume it won't hurt much if I disable USB autosuspend in general for now? Power savings should be minimal, right? (desktop here, AC etc) Doesn't the powertop utility have a facility to do this per-device and to see what the current power-save settings are per-device? Surely a bit easier to use than directly messing about with udev rules?
