Re: Reset USB after printer reattach?

[Paul Goyette <paul%whooppee.com@localhost>]

On Wed, 4 Dec 2013, Ib-Michael Martinsen wrote:

> Paul Goyette writes:
> > On Wed, 4 Dec 2013, Moritz Wilhelmy wrote:
> >
> > > Hello,
> > >
> > > I occasionally turn my USB printer off and on again, after which it
> > > doesn't reattach to ulpt0 or show up in dmesg, same thing if I
> > > physically remove and reattach the USB cable. Rebooting fixes it, but
> > > I'd preferably not do that each time I reattach USB devices.
> > >
> > > Host machine is a Raspberry Pi running
> > > NetBSD raspi 6.99.24 NetBSD 6.99.24 (RPI) #0: Wed Oct  2 13:06:35 UTC 2013  
> builds%b6.netbsd.org@localhost:/home/builds/ab/HEAD/evbarm-earmhf/201310020850Z-obj/home/builds/ab/HEAD/src/sys/arch/evbarm/compile/RPI
>  evbarm
> > >
> > > Printer is a Samsung CLX 3185.
> > >
> > > Any ideas how to force-reset USB?
> >
> > Have you tried
> >
> >    drvctl -s <parent device>
> >
> > ??
> >
>
> I have a similar problem and tried:
>
> root%asus.immnet.dk@localhost:/root # drvctl -l uhub5
> uhub5 ulpt0
> uhub5 uhub8
> root%asus.immnet.dk@localhost:/root # drvctl -s uhub5
> drvctl: unknown option -- s
> Usage: drvctl -r [-a attribute] busdevice [locator ...]
>       drvctl -d device
>       drvctl [-nt] -l [device]
>       drvctl [-n] -p device [prop]
>       drvctl -Q device
>       drvctl -R device
>       drvctl -S device
> root%asus.immnet.dk@localhost:/root #
>
> Is the switch you are suggesting a typo?
> Or am I using the command incorrectly?

Ooppss!  My bad.  The suggested command should be

        drvctl -r <device>

to rescan.

You may have to use /dev/usb# rather than uhub5.  Check your console log 
to see which usb bus your printer eventually attached.


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