On Sat, 2006-07-29 at 17:55 -0700, Pete Zaitcev wrote: > On Sat, 29 Jul 2006 23:13:59 +0200, Erwin Rol <mailinglists@xxxxxxxxxxxx> wrote: > Interesting. The -32 is a stall, e.g. a device intentionally terminates > the transfer. Most likely, your hub simply does not support split > USB 2.0 isochronous transactions, and the stall originates in the hub. It is based (well pretty much is, because it is a one chip thing) on a Cypress CY7C65640 that apparently has some configuration options that make it possible to make highspeed transactions out of full/low speed transactions. so when a downstream port is full speed the upstream port will use highspeed transactions, that way all 4 downstream ports can have a full 12Mbit/s bandwidth. A second configuration is that the upstream transaction also will be full speed and than the 4 ports have to share the 12Mbit/s upstream. To be honest i don't know what setting the hub is in, but maybe trying the other setting would fix the problem. Does Linux have any infrastructure to changes settings of HUB's like this ? - Erwin -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list
