Same issue on ASUS G73JW . ADATA S102 32gb thumb drive writes at 27 MB/s in a USB 2.0 slot but only manages 400 KB/s in the 3.0 slot. On Windows partition it can write at over 70 MB/s on the same 3.0 slot.
dmesg: [ 6966.205903] usb 3-1: new SuperSpeed USB device using xhci_hcd and address 3 [ 6966.226112] xhci_hcd 0000:04:00.0: WARN: short transfer on control ep [ 6966.226215] xhci_hcd 0000:04:00.0: WARN: short transfer on control ep [ 6966.226287] xhci_hcd 0000:04:00.0: WARN: short transfer on control ep [ 6966.226448] xhci_hcd 0000:04:00.0: WARN: short transfer on control ep [ 6966.227859] scsi12 : usb-storage 3-1:1.0 [ 6967.225417] scsi 12:0:0:0: Direct-Access ADATA USB Flash Drive 1.00 PQ: 0 ANSI: 5 [ 6967.227409] sd 12:0:0:0: Attached scsi generic sg3 type 0 [ 6967.227729] sd 12:0:0:0: [sdc] 61407232 512-byte logical blocks: (31.4 GB/29.2 GiB) [ 6967.227924] sd 12:0:0:0: [sdc] Write Protect is off [ 6967.227930] sd 12:0:0:0: [sdc] Mode Sense: 03 00 00 00 [ 6967.228429] sd 12:0:0:0: [sdc] No Caching mode page present [ 6967.228436] sd 12:0:0:0: [sdc] Assuming drive cache: write through [ 6967.230417] sd 12:0:0:0: [sdc] No Caching mode page present [ 6967.230424] sd 12:0:0:0: [sdc] Assuming drive cache: write through [ 6967.231749] sdc: unknown partition table [ 6967.233211] sd 12:0:0:0: [sdc] No Caching mode page present [ 6967.233217] sd 12:0:0:0: [sdc] Assuming drive cache: write through [ 6967.233222] sd 12:0:0:0: [sdc] Attached SCSI removable disk -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/647973 Title: USB 3.0 on 10.10 x86_64 : xhci_hcd WARN: Stalled endpoint To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/647973/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
