* Re: [9fans] hub issues on 9Pi
@ 2014-10-03 12:00 Roswell Grey
0 siblings, 0 replies; 4+ messages in thread
From: Roswell Grey @ 2014-10-03 12:00 UTC (permalink / raw)
To: 9fans
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Applying a patch sounds like fun! Could you shoot me an email on how to do
it? Thank ya!
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [9fans] hub issues on 9Pi
@ 2014-10-03 0:12 Roswell Grey
2014-10-03 4:29 ` lucio
0 siblings, 1 reply; 4+ messages in thread
From: Roswell Grey @ 2014-10-03 0:12 UTC (permalink / raw)
To: 9fans
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Unfortunately, I don't have the right wall-wart that would fit the powered
USB hub - this is the one that gives I/O problems. But on the self powered
hub, 9 doesn't even seem to recognize anything. No keyboard or mouse
lights, no console message saying it found those devices... But like I
said, they work fine when plugged in directly.
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [9fans] hub issues on 9Pi
2014-10-03 0:12 Roswell Grey
@ 2014-10-03 4:29 ` lucio
2014-10-03 11:24 ` hiro
0 siblings, 1 reply; 4+ messages in thread
From: lucio @ 2014-10-03 4:29 UTC (permalink / raw)
To: 9fans
> But on the self powered
> hub, 9 doesn't even seem to recognize anything.
That is, I presume, when not powered.
It's a known problem, I understand (don't have any experience myself),
and if this works with the pi under other operating systems, then it's
probably a USB power-negotiation problem. A different hub may work,
but the pi has limited current output on the USB ports, Plan 9 can't
deal with devices that want more.
Lucio.
^ permalink raw reply [flat|nested] 4+ messages in thread
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