Esse problema foi resolvido com o downgrade do kernel de 3.8.0-29 para 3.8.0-27.
Acabei de atualizar meu Ubuntu do kernel 12.04.2 3.5.0-39 para o kernel 12.04.3 3.8.0-29 (raring kernel). Aqui está o problema: quando eu conecto o disco rígido NTB usb 3.0 ao meu sistema, demora cerca de 5 a 7 minutos para montar o disco rígido com sucesso! O disco rígido usb 3.0 NTFS funciona bem com o Ubuntu 12.04.2 kernel 3.5.0-39 e o Windows 8 (inicialização dupla).
saída de lsusb:
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 004 Device 002: ID 125f:a21a A-DATA Technology Co., Ltd. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 006: ID 0cf3:3005 Atheros Communications, Inc. AR3011 Bluetooth Bus 001 Device 004: ID 058f:a014 Alcor Micro Corp. Bus 001 Device 005: ID 0bda:0139 Realtek Semiconductor Corp. Bus 002 Device 003: ID 046d:c058 Logitech, Inc. M115 Mouse
dmesg | cauda -n 50:
[ 2110.871454] usb 4-1: reset SuperSpeed USB device number 2 using xhci_hcd [ 2110.890464] usb 4-1: Parent hub missing LPM exit latency info. Power management will be impacted. [ 2110.891863] xhci_hcd 0000:04:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff880147ad8780 [ 2110.891874] xhci_hcd 0000:04:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff880147ad87c0 [ 2142.823966] usb 4-1: reset SuperSpeed USB device number 2 using xhci_hcd [ 2142.842895] usb 4-1: Parent hub missing LPM exit latency info. Power management will be impacted. [ 2142.844277] xhci_hcd 0000:04:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff880147ad8780 [ 2142.844288] xhci_hcd 0000:04:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff880147ad87c0 [ 2174.776259] usb 4-1: reset SuperSpeed USB device number 2 using xhci_hcd [ 2174.795360] usb 4-1: Parent hub missing LPM exit latency info. Power management will be impacted. [ 2174.796794] xhci_hcd 0000:04:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff880147ad8780 [ 2174.796805] xhci_hcd 0000:04:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff880147ad87c0 [ 2175.677168] sd 7:0:0:0: [sdc] No Caching mode page present [ 2175.677180] sd 7:0:0:0: [sdc] Assuming drive cache: write through [ 2206.728759] usb 4-1: reset SuperSpeed USB device number 2 using xhci_hcd [ 2206.747804] usb 4-1: Parent hub missing LPM exit latency info. Power management will be impacted. [ 2206.749238] xhci_hcd 0000:04:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff880147ad8780 [ 2206.749250] xhci_hcd 0000:04:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff880147ad87c0 [ 2238.681134] usb 4-1: reset SuperSpeed USB device number 2 using xhci_hcd [ 2238.700144] usb 4-1: Parent hub missing LPM exit latency info. Power management will be impacted. [ 2238.701552] xhci_hcd 0000:04:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff880147ad8780 [ 2238.701563] xhci_hcd 0000:04:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff880147ad87c0 [ 2270.633590] usb 4-1: reset SuperSpeed USB device number 2 using xhci_hcd [ 2270.652574] usb 4-1: Parent hub missing LPM exit latency info. Power management will be impacted. [ 2270.653947] xhci_hcd 0000:04:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff880147ad8780 [ 2270.653958] xhci_hcd 0000:04:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff880147ad87c0 [ 2302.586048] usb 4-1: reset SuperSpeed USB device number 2 using xhci_hcd [ 2302.605016] usb 4-1: Parent hub missing LPM exit latency info. Power management will be impacted. [ 2302.606406] xhci_hcd 0000:04:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff880147ad8780 [ 2302.606417] xhci_hcd 0000:04:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff880147ad87c0 [ 2303.853319] sdc: sdc1 [ 2303.856211] sd 7:0:0:0: [sdc] No Caching mode page present [ 2303.856214] sd 7:0:0:0: [sdc] Assuming drive cache: write through [ 2334.538275] usb 4-1: reset SuperSpeed USB device number 2 using xhci_hcd [ 2334.553109] usb 4-1: Parent hub missing LPM exit latency info. Power management will be impacted. [ 2334.554479] xhci_hcd 0000:04:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff880147ad8780 [ 2334.554481] xhci_hcd 0000:04:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff880147ad87c0 [ 2366.490863] usb 4-1: reset SuperSpeed USB device number 2 using xhci_hcd [ 2366.509769] usb 4-1: Parent hub missing LPM exit latency info. Power management will be impacted. [ 2366.511152] xhci_hcd 0000:04:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff880147ad8780 [ 2366.511183] xhci_hcd 0000:04:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff880147ad87c0 [ 2398.443073] usb 4-1: reset SuperSpeed USB device number 2 using xhci_hcd [ 2398.457795] usb 4-1: Parent hub missing LPM exit latency info. Power management will be impacted. [ 2398.459303] xhci_hcd 0000:04:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff880147ad8780 [ 2398.459309] xhci_hcd 0000:04:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff880147ad87c0 [ 2430.395719] usb 4-1: reset SuperSpeed USB device number 2 using xhci_hcd [ 2430.414627] usb 4-1: Parent hub missing LPM exit latency info. Power management will be impacted. [ 2430.415988] xhci_hcd 0000:04:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff880147ad8780 [ 2430.415997] xhci_hcd 0000:04:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff880147ad87c0 [ 2431.294666] sd 7:0:0:0: [sdc] Attached SCSI disk
Como resolvo este problema?
Esse problema foi resolvido com o downgrade do kernel de 3.8.0-29 para 3.8.0-27.
O mesmo problema também para algumas unidades FAT32-USB - não pense que isso depende do sistema de arquivos, mas do fabricante da unidade.
De qualquer forma, você também pode (em vez de fazer o downgrade) atualizar para o 3.8.0-30, o que também ajuda.