On Fri, 13 Jul 2012, Sami Farin wrote: > On Fri, Jul 13, 2012 at 10:17:14 -0400, Alan Stern wrote: > > On Fri, 13 Jul 2012, Sami Farin wrote: > > > > > transcend rdf8 reader works in usb2 port, but some SD cards do not work in > > > usb3 port. 3.5.0-g918227bb1 kernel, Asus P8Z68-V PRO GEN3 rev 3402. > > > > > > If someone knows a working (in Linux) SD card reader for usb3, please tell me. > > > > > > cat: write error: Input/output error > > > > Please post a usbmon trace showing the error (see > > Documentation/usb/usbmon.txt). > > > > Alan Stern > > I uploaded it here, 534 KB > https://docs.google.com/open?id=0B_EMXtsx7o56bEtobmJwYi1TaWc The card reader has a couple of bugs in its firmware. It's odd that the errors occur only when running at SuperSpeed. You'd think the firmware would behave the same way regardless of the speed. Anyway, you can work around one of the bugs by specifying a quirk parameter for usb-storage: modprobe usb-storage quirks=8564:4000:m To fix the other bug will require adding a blacklist entry for the card reader. First let's see if the quirk alone will get it working. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
