On Mon, Dec 15, 2014 at 02:50:32PM -0200, Gustavo Duarte wrote: > Hi Greg, > > The Notebook has physically 2 port USB 2.0 and one port USB 3.0. The > manufacturer specs says that and the output of the command lsusb says > the same: > > $ lsusb > > Bus 001 Device 002: ID 058f:6254 Alcor Micro Corp. USB Hub > Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub > Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub > Bus 001 Device 003: ID 5986:024b Acer, Inc Note that USB 3 controllers control USB 2 hubs, odds are there is just one controller chip in your laptop. What does 'lspci' show? > >What type of application isn't compatible with xhci-hcd? Shouldn't we > >fix something like this in the kernel as this isn't a good thing to > >have. > > The app, is a SDK of Robootic kits programming for kids. > http://www.lejos.org/nxt/nxj/tutorial/Preliminaries/GettingStartedLinux.htm > The bug is on the firmware-library of the SDK, so there isn't to fix > on kernel/driver side. I don't understand, what exact bug is there? > I'm using the kernel compilde by ubuntu 12.04, > > $ uname -r > 3.8.0-33-generic Wow that's old and obsolete, sorry, no one can help you with something like that here :( Also, _lots_ of USB 3 bugs have been fixed in the 2 years since that kernel was released, please try updating and your issues should be resolve. > And i would like still using that, without recompile it, for this > reason is my question, how can i disable xhci_hcd driver without > recompile it. ? You can unbind the driver from the device, but as I say above, I really think this driver also controls the USB 2 hubs as well. The output of 'lspci -k' will show this, can you provide the output of that? thanks, greg k-h _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
