On Fri, Aug 24, 2012 at 7:16 PM, Sami Farin <hvtaifwkbgefbaei@xxxxxxxxx> wrote: > On Sun, Jul 15, 2012 at 11:14:13 -0400, Alan Stern wrote: > ... >> In past years I have found that Genesys's devices tend to be rather >> buggy. This card reader continues the tradition. Basically, although >> the firmware works reasonably well at high speed, the SuperSpeed >> support is too buggy to be usable. >> >> My advice is to exchange the card reader for one of a different brand. > > I got £6 reader from eBay, sanXi usb3 sdcx reader.. > It reset itself to usb2 speed when I tried it in usb3 port > and in usb2 port it is quite slow (14 MB/s). > There are benchmarks done by other people with sanXi where they get good > speed (90 MB/s) but presumably they do not have any ASMedia near their computers. > Also, (after first use) the usb3 port I used sanXi in was DEAD till I rebooted > the machine; also, other devices were not detected in the port, either. > >> Alan Stern >> >> P.S.: Sarah, the lspci information shows this xHCI controller to be an >> ASM1042 controller from ASMedia. Is this one of those known to have >> the short-packet bug? The usbmon trace shows a cancelled transfer, for >> which 0 bytes must have been received, but with actual_length equal to >> the transfer_buffer_length. > > 3.6.0-rc2-g6dab7ede has some funny printk's , but it panics on network use > so I am back to 3.5.0-rc7-g84a1caf: > > <5>[ 5.163846] scsi 10:0:0:0: bad extra_isize (%u != %u)Direct-Access Generic STORAGE DEVICE TS07 PQ: 0 ANSI: 0 > <3>[ 2277.412255] sd 10:0:0:1: 6mpf: %llx > > >> This would seem to indicate another type of bug in the host controller. >> Apparently it reported normal completion for a transfer that was >> cancelled. > > Can these be worked around in kernel, or is firmware update needed > for asmedia? I have latest BIOS from Asus... A dmesg with CONFIG_USB_DEBUG and CONFIG_USB_XHCI_HCD_DEBUGGING would be helpful. Thanks, Andiry > > -- > Do what you love because life is too short for anything else. > > -- > 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 -- 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
