On Fri, 3 Apr 2015, Steve Bangert wrote: > On Fri, 2015-04-03 at 09:59 -0400, Alan Stern wrote: > > On Fri, 3 Apr 2015, Steve Bangert wrote: > > > > > Alan or Mathias, > > > > > > Machine is a 64 bit Dell Inspiron with Intel chips running Fedora 3.19.3 kernel > > > > > > Disabling the uas driver is no help. Any help is appreciated. > > > > Can you post a usbmon trace with uas disabled? And a similar usbmon > > trace using EHCI? > > > > Alan Stern > > > usbmon trace w/uas driver disabled: ... > ffff8800ce9bf000 3292872775 S Ci:2:002:0 s 80 06 0300 0000 00ff 255 < > ffff8800ce9bf000 3292872853 C Ci:2:002:0 0 4 = 04030904 > ffff8800ce9bf000 3292872893 S Ci:2:002:0 s 80 06 0303 0409 00ff 255 < > ffff8800ce9bf000 3292872938 C Ci:2:002:0 0 32 = 20035500 53004200 33002d00 53004100 54004100 2d005500 41005300 50003100 > ffff8800ce9bf000 3292872985 S Ci:2:002:0 s 80 06 0302 0409 00ff 255 < > ffff8800ce9bf000 3292873049 C Ci:2:002:0 0 18 = 12035000 6c007500 67006100 62006c00 6500 > ffff8800ce9bf000 3292873087 S Ci:2:002:0 s 80 06 0301 0409 00ff 255 < > ffff8800ce9bf000 3292873168 C Ci:2:002:0 0 26 = 1a033100 32003300 34003500 36003700 38003900 30003100 3400 > ffff8800ce9bfb40 3292876140 S Co:2:002:0 s 00 09 0001 0000 0000 0 > ffff8800ce9bfb40 3292876177 C Co:2:002:0 0 0 > ffff8800ce9bf9c0 3292876382 S Ci:2:001:0 s a3 00 0000 0002 0004 4 < > ffff8800ce9bf9c0 3292876397 C Ci:2:001:0 0 4 = 03020000 Is that really all? Was there a "UAS is blacklisted for this device" line in the kernel log? It looks like the usb-storage driver didn't do anything at all with the device. This seems to be a separate problem from the original one. > usbmon trace using ehci: ... Comparing this with the original usbmon trace, it looks like the first problem in the xHCI trace shows up when we try to transfer more than 122880 bytes. A 196608-byte transfer has to be aborted after 30 seconds, and only 65536 bytes were received. (Note that 122880-byte transfers succeeded in both the EHCI and xHCI-with-a-USB-2-cable traces.) Perhaps this drive needs some sort of max_sectors restriction. 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
