On Fri, 13 Jan 2017, c400 wrote: > kernel 4.9.3 > still not working > latest log: > > [ 196.984424] sd 7:0:0:0: [sdc] 31293440 512-byte logical blocks: > (16.0 GB/14.9 GiB) > [ 196.984564] sd 7:0:0:0: [sdc] Write Protect is off > [ 196.984566] sd 7:0:0:0: [sdc] Mode Sense: 23 00 00 00 > [ 196.984689] sd 7:0:0:0: [sdc] No Caching mode page found > [ 196.984690] sd 7:0:0:0: [sdc] Assuming drive cache: write through > [ 196.984696] device: '8:32': device_add > [ 196.984714] PM: Adding info for No Bus:8:32 > [ 196.984727] device: 'sdc': device_add > [ 196.984747] PM: Adding info for No Bus:sdc > [ 197.085658] sdc: sdc1 > [ 197.085664] device: 'sdc1': device_add > [ 197.085680] PM: Adding info for No Bus:sdc1 > [ 197.086929] sd 7:0:0:0: [sdc] Attached SCSI removable disk > [ 230.955006] FAT-fs (sdc1): Volume was not properly unmounted. Some > data may be corrupt. Please run fsck. > [ 234.422942] DMAR: DRHD: handling fault status reg 2 > [ 234.422946] DMAR: [DMA Read] Request device [02:00.0] fault addr > fffbb000 [fault reason 06] PTE Read access is not set > [ 234.422950] xhci_hcd 0000:02:00.0: WARNING: Host System Error > [ 234.446078] xhci_hcd 0000:02:00.0: Host not halted after 16000 microseconds. > [ 270.447035] xhci_hcd 0000:02:00.0: xHCI host not responding to stop > endpoint command. > [ 270.447040] xhci_hcd 0000:02:00.0: Assuming host is dying, halting host. > [ 270.470143] xhci_hcd 0000:02:00.0: Host not halted after 16000 microseconds. > [ 270.470153] xhci_hcd 0000:02:00.0: Non-responsive xHCI host is not halting. > [ 270.470154] xhci_hcd 0000:02:00.0: Completing active URBs anyway. > [ 270.470161] xhci_hcd 0000:02:00.0: HC died; cleaning up > [ 270.470265] sd 7:0:0:0: [sdc] tag#0 FAILED Result: > hostbyte=DID_TIME_OUT driverbyte=DRIVER_OK > [ 270.470268] sd 7:0:0:0: [sdc] tag#0 CDB: Read(10) 28 00 00 06 51 22 > 00 00 0e 00 > [ 270.470269] blk_update_request: I/O error, dev sdc, sector 413986 > [ 270.538994] sd 7:0:0:0: [sdc] tag#0 FAILED Result: > hostbyte=DID_ERROR driverbyte=DRIVER_OK > [ 270.538997] sd 7:0:0:0: [sdc] tag#0 CDB: Read(10) 28 00 00 06 51 23 > 00 00 0d 00 > [ 270.538998] blk_update_request: I/O error, dev sdc, sector 413987 > [ 270.986995] sd 7:0:0:0: [sdc] tag#0 FAILED Result: > hostbyte=DID_ERROR driverbyte=DRIVER_OK > [ 270.986997] sd 7:0:0:0: [sdc] tag#0 CDB: Read(10) 28 00 00 06 51 22 > 00 00 01 00 > [ 270.986999] blk_update_request: I/O error, dev sdc, sector 413986 > [ 270.987063] FAT-fs (sdc1): Directory bread(block 411938) failed > [ 271.307002] sd 7:0:0:0: [sdc] tag#0 FAILED Result: > hostbyte=DID_ERROR driverbyte=DRIVER_OK > [ 271.307004] sd 7:0:0:0: [sdc] tag#0 CDB: Read(10) 28 00 00 06 51 23 > 00 00 01 00 > [ 271.307005] blk_update_request: I/O error, dev sdc, sector 413987 > [ 271.307062] FAT-fs (sdc1): Directory bread(block 411939) failed > [ 271.307079] FAT-fs (sdc1): Directory bread(block 411940) failed Please post a usbmon trace starting from just before you plug in the USB drive and continuing until the error occurs. (Instructions for usbmon are in the kernel source file Documentation/usb/usbmon.txt.) 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