> -----Original Message----- > From: linux-usb-owner@xxxxxxxxxxxxxxx [mailto:linux-usb- > owner@xxxxxxxxxxxxxxx] On Behalf Of jerome huang > Sent: Friday, August 19, 2011 2:09 PM > To: linux-usb@xxxxxxxxxxxxxxx > Subject: Problem with usb3 flash drive > > Hi all, > > I tested the usb3 flash drive with NEC controller on > ubuntu 11.10 alpha3 oneiric 3.0.0-8-generic-pae, > and found a strange problem. > > I inserted a flash drive (Transcend 8G or AData 8G) > and checked the lsusb, > the speed of this flash is super. > > Then I reboot the system (with flash drive inserted). > After boot completed, I found the speed of this flash is high only. > At this moment, I tried to remove and insert xhci-hcd module again, > but the speed is still high. > It is not super until I remove the flash and insert it again or > power off the system and power on again. > > Please find the lsusb info in the attachment. > Please apply the patch attached and re-compile kernel with CONFIG_USB_DEBUG enabled. Then send the dmesg after boot complete with flash plugged in. I suspect the port status is not right after reboot. Thanks, Andiry
Attachment:
temp.patch
Description: temp.patch
