22 Sep
2008
22 Sep
'08
8:22 a.m.
Also, some USB hubs may not provide the full spec of power to every port
on the hub if you happen to be using all of them. I'm using 5 of the 6
available ports on my little powered Zonet USB2 hub (with transfer rate
to prove it!) but if I add my 2.5" external notebook hard drive to the
last available port, the drive doesn't get enough juice to power up and
make a connection. Directly connected to the computer, it works fine.
If it's really a USB1 hub, it may not be providing enough power for
everything connected to the hub when you plugged your keyboard into?
hello
i had quite similar experiences with usb hubs and usb soundcards and also midi interfaces
the usb sounddevice for instance, wanst working over a unpowered usb hub, and
of course doing his job when connected directly.
and some interfaces may not work correctly like described above.
for instance the usb midisport 2x2. i coulnd get it working to
provide midi signal out into old analog syntesizers ( i guess they are more sensitive
or have more powerconsumption, i dont know, on the midi site ). i had to route it
through powered midi i/o ports to get it working. so i gave that interface away.
i dont know if this has anything todo with alsa, i dont think so.
best
m
--
David
gnome(a)hawaii.rr.com
authenticity, honesty, community
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