Date: Mon, 7 Mar 2011 12:15:48 +0100 From: Hans Petter Selasky <hselasky@c2i.net> To: gnixua@gmail.com Cc: freebsd-usb@freebsd.org Subject: Re: usbconfig power_off is not working correctly on FreeBSD 8.2 Message-ID: <201103071215.48922.hselasky@c2i.net> In-Reply-To: <4D74BB9B.8090407@gmail.com> References: <4D74B3CB.6010902@gmail.com> <201103071144.56729.hselasky@c2i.net> <4D74BB9B.8090407@gmail.com>
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On Monday 07 March 2011 12:03:55 Gritsuk Anton wrote: > On 07.03.2011 12:44, Hans Petter Selasky wrote: > > On Monday 07 March 2011 11:30:35 Gritsuk Anton wrote: > >> I see that usbconfig is not working correctly. When i type: > >> # usbconfig -u 4 -a 3 power_off > >> > >> really usb device will detached > >> > >> But i cannot return device back when I type: > >> usbconfig -u 4 -a 3 power_on > > > > Hi, > > > > There has been some changes in this area. When an USB device is powered > > off, then you need to reset the parent hub to get it back. > > > > --HPS > > How I can reset the parent hub to get usb device back? > Hi, > When I type: > # usbconfig reset > my terminal is freeze and nothing happens. Is your keyboard on USB and you are in X? Then try: CTRL+ALT+F1, then CTRL+ALT+F9 The command you did will reset all USB devices. You should specify a particular device: usbconfig -d ugenX.Y reset I see there is a bug if trying to reset the root HUB. You can try instead: usbconfig -d ugenX.Y set_config 255 Then usbconfig -d ugenX.Y set_config 0 For the root HUB. Currently there is no easy way to find the HUB directly. One way is to find the root HUB on the same bus like your device: Device: ugen4.2: <...> at usbus4, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON Associated root HUB: ugen4.1: <UHCI root HUB Intel> at usbus4, cfg=0 md=HOST spd=FULL (12Mbps) pwr=SAVE You see they are both at the same bus ugen4.Y. > > > I recommend only using power_save. Then the USB stack will manage power > > saving. The power_save is done like this: usbconfig -d ugenX.Y power_save The timeout until power save triggers can be set by: sysctl hw.usb.power_timeout=30 --HPS
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