ICY BOX Sata USB box runs ar 1M instead of 40M+

Hans Petter Selasky hselasky at c2i.net
Sat Mar 10 19:39:35 UTC 2012


On Saturday 10 March 2012 20:33:16 Julian H. Stacey wrote:
> usbconfig dump_quirk_names | more
>         shows nothing I might think of as "Force this to USB-2 high speed.

Hi Julian,

There is no such quirk. You can only do the opposite:

sysctl -a hw.usb.ehci.no_hs

The EHCI port reset code is found here:

/sys/dev/usb/controller/ehci.c


Look for "ehci_disown()". Maybe we need to reset the port multiple times 
before giving up High-Speed USB ?


--HPS


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