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How to reset USB devices?


thekx
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Hi,

 

I'm getting occasional kernel panics from my Leadtek Winfast DTV dongle, which leave it in an unusable (locked) state.

 

'service hotplug restart' seems to do a warm reset - not enough to help here. Equally, a system reboot doesn't fix it. I have to pull the USB connection, or poweroff and disconnect the power to the PSU. The system box isn't very accessible, so I'd really like to find a gentler alternative...

 

So, is there any way in software to hard reset USB devices? I can tolerate resetting the whole USB subsystem if it fixes this. I've tried googling, but either there's no easy answer, or I'm like a n00b and missing the magic search terms.

 

Best,

Nick

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Thanks arctic.

 

Now I've had a bit of free time I've managed to provoke the kernel panic, and tried your suggestions. None of them even provoked a line in syslog, and the blue LED on the DVB stick stayed lit all the way through. Bummer. Oddly, I don't even have hotplug as a service in /etc/rcX.d

 

Plan B is, I guess to try to get the kernel panic fixed. I guess I'll try to find an appropriate list to post on for v4l-dvb...

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