2.6.32-41-generic #89-Ubuntu SMP Fri Apr 27 22:18:56 UTC 2012 x86_64
GNU/Linux

The A807 fleetingly shows the message "USB connected" when first plugged in and 
powering up.
Just in case it is any use, here is my dmesg output with the decvice attached 
and charging.

[    1.691956] uhci_hcd 0000:00:1d.2: setting latency timer to 64
[    1.691958] uhci_hcd 0000:00:1d.2: UHCI Host Controller
[    1.691982] uhci_hcd 0000:00:1d.2: new USB bus registered, assigned bus 
number 8
[    1.692002] uhci_hcd 0000:00:1d.2: irq 18, io base 0x0000fa00
[    1.692051] usb usb8: configuration #1 chosen from 1 choice
[    1.692067] hub 8-0:1.0: USB hub found
[    1.692070] hub 8-0:1.0: 2 ports detected
[    1.692122] PNP: PS/2 Controller [PNP0303:PS2K,PNP0f13:PS2M] at 0x60,0x64 
irq 1,12
[    1.692462] serio: i8042 KBD port at 0x60,0x64 irq 1
[    1.692466] serio: i8042 AUX port at 0x60,0x64 irq 12
[    1.692521] mice: PS/2 mouse device common for all mice
[    1.692583] rtc_cmos 00:04: RTC can wake from S4
[    1.692606] rtc_cmos 00:04: rtc core: registered rtc_cmos as rtc0
[    1.692628] rtc0: alarms up to one month, 242 bytes nvram, hpet irqs
[    1.692707] device-mapper: uevent: version 1.0.3
[    1.692769] device-mapper: ioctl: 4.15.0-ioctl (2009-04-01) initialised: 
dm-de...@redhat.com
[    1.692874] device-mapper: multipath: version 1.1.0 loaded
[    1.692876] device-mapper: multipath round-robin: version 1.0.0 loaded
[    1.693101] cpuidle: using governor ladder
[    1.693102] cpuidle: using governor menu
[    1.693343] TCP cubic registered
[    1.693442] NET: Registered protocol family 10
[    1.693957] NET: Registered protocol family 17
[    1.695396] PM: Resume from disk failed.
[    1.695403] registered taskstats version 1
[    1.695994]   Magic number: 0:878:882
[    1.695997] hub 8-0:1.0: hash matches
[    1.696048] rtc_cmos 00:04: setting system clock to 2012-06-05 11:51:03 UTC 
(1338897063)
[    1.696051] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found
[    1.696052] EDD information not available.
[    1.711063] input: AT Translated Set 2 keyboard as 
/devices/platform/i8042/serio0/input/input3
[    1.999633] ata4: SATA link down (SStatus 0 SControl 300)
[    2.010382] ata3: SATA link down (SStatus 0 SControl 300)
[    2.488916] ata2.00: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[    2.488929] ata2.01: SATA link down (SStatus 0 SControl 300)
[    2.488939] ata2.01: link offline, clearing class 3 to NONE
[    2.498917] ata1.00: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[    2.498928] ata1.01: SATA link down (SStatus 0 SControl 300)
[    2.509059] ata2.00: ATAPI: PIONEER DVD-RW  DVR-218L, 1.02, max UDMA/100
[    2.539163] ata1.00: ATA-8: SAMSUNG HD321KJ, CP100-13, max UDMA7
[    2.539165] ata1.00: 625142448 sectors, multi 16: LBA48 NCQ (depth 0/32)
[    2.550313] ata2.00: configured for UDMA/100
[    2.550625] ata1.00: configured for UDMA/133
[    2.550701] scsi 0:0:0:0: Direct-Access     ATA      SAMSUNG HD321KJ  CP10 
PQ: 0 ANSI: 5
[    2.550792] sd 0:0:0:0: Attached scsi generic sg0 type 0
[    2.550800] sd 0:0:0:0: [sda] 625142448 512-byte logical blocks: (320 GB/298 
GiB)
[    2.550826] sd 0:0:0:0: [sda] Write Protect is off
[    2.550828] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
[    2.550842] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, 
doesn't support DPO or FUA
[    2.550934]  sda:
[    2.553333] scsi 1:0:0:0: CD-ROM            PIONEER  DVD-RW  DVR-218L 1.02 
PQ: 0 ANSI: 5
[    2.558156] sr0: scsi3-mmc drive: 40x/40x writer dvd-ram cd/rw xa/form2 cdda 
tray
[    2.558158] Uniform CD-ROM driver Revision: 3.20
[    2.558204] sr 1:0:0:0: Attached scsi CD-ROM sr0
[    2.558229] sr 1:0:0:0: Attached scsi generic sg1 type 5
[    2.569672]  sda1 sda2 < sda5 >
[    2.595350] sd 0:0:0:0: [sda] Attached SCSI disk
[    2.595362] Freeing unused kernel memory: 884k freed
[    2.595479] Write protecting the kernel read-only data: 7720k
[    2.604384] udev: starting version 151
[    2.623513] pata_jmicron 0000:05:00.1: PCI INT B -> GSI 18 (level, low) -> 
IRQ 18
[    2.623544] pata_jmicron 0000:05:00.1: setting latency timer to 64
[    2.626870] r8169 Gigabit Ethernet driver 2.3LK-NAPI loaded
[    2.626891] r8169 0000:07:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[    2.626938] r8169 0000:07:00.0: setting latency timer to 64
[    2.626943] r8169 0000:07:00.0: unknown MAC, using family default
[    2.626983]   alloc irq_desc for 31 on node -1
[    2.626985]   alloc kstat_irqs on node -1
[    2.626998] r8169 0000:07:00.0: irq 31 for MSI/MSI-X
[    2.627501] eth0: RTL8168b/8111b at 0xffffc90000c72000, 1c:6f:65:3c:54:98, 
XID 0c200000 IRQ 31
[    2.627737] scsi4 : pata_jmicron
[    2.628047] scsi5 : pata_jmicron
[    2.628725] ata5: PATA max UDMA/100 cmd 0xef00 ctl 0xee00 bmdma 0xeb00 irq 18
[    2.628728] ata6: PATA max UDMA/100 cmd 0xed00 ctl 0xec00 bmdma 0xeb08 irq 18
[    2.628773] pata_jmicron 0000:06:00.1: PCI INT B -> GSI 16 (level, low) -> 
IRQ 16
[    2.628798] pata_jmicron 0000:06:00.1: setting latency timer to 64
[    2.629038] scsi6 : pata_jmicron
[    2.629327] scsi7 : pata_jmicron
[    2.630074] ata7: PATA max UDMA/100 cmd 0xdf00 ctl 0xde00 bmdma 0xdb00 irq 16
[    2.630077] ata8: PATA max UDMA/100 cmd 0xdd00 ctl 0xdc00 bmdma 0xdb08 irq 16
[    2.638038] ahci 0000:05:00.0: version 3.0
[    2.638052] ahci 0000:05:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[    2.659800] ahci 0000:05:00.0: AHCI 0001.0000 32 slots 2 ports 3 Gbps 0x3 
impl SATA mode
[    2.659802] ahci 0000:05:00.0: flags: 64bit ncq pm led clo pmp pio slum part 
[    2.659807] ahci 0000:05:00.0: setting latency timer to 64
[    2.659900] scsi8 : ahci
[    2.659949] scsi9 : ahci
[    2.660005] ata9: SATA max UDMA/133 abar m8192@0xfbefe000 port 0xfbefe100 
irq 17
[    2.660008] ata10: SATA max UDMA/133 abar m8192@0xfbefe000 port 0xfbefe180 
irq 17
[    2.660036] ahci 0000:06:00.0: PCI INT A -> GSI 19 (level, low) -> IRQ 19
[    2.679810] ahci 0000:06:00.0: AHCI 0001.0000 32 slots 2 ports 3 Gbps 0x3 
impl SATA mode
[    2.679813] ahci 0000:06:00.0: flags: 64bit ncq pm led clo pmp pio slum part 
[    2.679818] ahci 0000:06:00.0: setting latency timer to 64
[    2.679903] scsi10 : ahci
[    2.679943] scsi11 : ahci
[    2.679998] ata11: SATA max UDMA/133 abar m8192@0xfbdfe000 port 0xfbdfe100 
irq 19
[    2.680001] ata12: SATA max UDMA/133 abar m8192@0xfbdfe000 port 0xfbdfe180 
irq 19
[    2.826683] EXT4-fs (sda1): mounted filesystem with ordered data mode
[    3.000390] ata9: SATA link down (SStatus 0 SControl 300)
[    3.009453] ata10: SATA link down (SStatus 0 SControl 300)
[    3.020399] ata11: SATA link down (SStatus 0 SControl 300)
[    3.028827] ata12: SATA link down (SStatus 0 SControl 300)
[   14.019686] udev: starting version 151
[   14.025791] lp: driver loaded but no devices found
[   14.035535] xhci_hcd 0000:02:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[   14.035570] xhci_hcd 0000:02:00.0: setting latency timer to 64
[   14.035573] xhci_hcd 0000:02:00.0: xHCI Host Controller
[   14.035633] xhci_hcd 0000:02:00.0: new USB bus registered, assigned bus 
number 9
[   14.035743] xhci_hcd 0000:02:00.0: irq 16, io mem 0xfbbfe000
[   14.038497] vga16fb: initializing
[   14.038500] vga16fb: mapped to 0xffff8800000a0000
[   14.038542] fb0: VGA16 VGA frame buffer device
[   14.039115] usb usb9: config 1 interface 0 altsetting 0 endpoint 0x81 has no 
SuperSpeed companion descriptor
[   14.039201] usb usb9: configuration #1 chosen from 1 choice
[   14.039205] xHCI xhci_add_endpoint called for root hub
[   14.039207] xHCI xhci_check_bandwidth called for root hub
[   14.039238] hub 9-0:1.0: USB hub found
[   14.039245] hub 9-0:1.0: 4 ports detected
[   14.046603] Adding 12699640k swap on /dev/sda5.  Priority:-1 extents:1 
across:12699640k 
[   14.078970] nvidia: module license 'NVIDIA' taints kernel.
[   14.078972] Disabling lock debugging due to kernel taint
[   14.129477] type=1505 audit(1338897075.932:2):  operation="profile_load" 
pid=759 name="/sbin/dhclient3"
[   14.129684] type=1505 audit(1338897075.932:3):  operation="profile_replace" 
pid=751 name="/sbin/dhclient3"
[   14.129847] type=1505 audit(1338897075.932:4):  operation="profile_load" 
pid=759 name="/usr/lib/NetworkManager/nm-dhcp-client.action"
[   14.130052] type=1505 audit(1338897075.932:5):  operation="profile_load" 
pid=759 name="/usr/lib/connman/scripts/dhclient-script"
[   14.130150] type=1505 audit(1338897075.932:6):  operation="profile_replace" 
pid=751 name="/usr/lib/NetworkManager/nm-dhcp-client.action"
[   14.130414] type=1505 audit(1338897075.932:7):  operation="profile_replace" 
pid=751 name="/usr/lib/connman/scripts/dhclient-script"
[   14.585944] nvidia 0000:03:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[   14.585952] nvidia 0000:03:00.0: setting latency timer to 64
[   14.585957] vgaarb: device changed decodes: 
PCI:0000:03:00.0,olddecodes=io+mem,decodes=none:owns=io+mem
[   14.586096] NVRM: loading NVIDIA UNIX x86_64 Kernel Module  195.36.24  Thu 
Apr 22 19:10:14 PDT 2010
[   14.595810] ohci1394 0000:08:06.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18
[   14.638583]   alloc irq_desc for 22 on node -1
[   14.638585]   alloc kstat_irqs on node -1
[   14.638589] HDA Intel 0000:00:1b.0: PCI INT A -> GSI 22 (level, low) -> IRQ 
22
[   14.638635] HDA Intel 0000:00:1b.0: setting latency timer to 64
[   14.648596] ohci1394: fw-host0: OHCI-1394 1.1 (PCI): IRQ=[18]  
MMIO=[fbaff000-fbaff7ff]  Max Packet=[2048]  IR/IT contexts=[4/8]
[   14.777335] logips2pp: Detected unknown logitech mouse model 89
[   14.784130] hda_codec: ALC889: BIOS auto-probing.
[   14.785543] input: HDA Digital PCBeep as 
/devices/pci0000:00/0000:00:1b.0/input/input4
[   14.792819] HDA Intel 0000:03:00.1: PCI INT B -> GSI 17 (level, low) -> IRQ 
17
[   14.792821] hda_intel: Disable MSI for Nvidia chipset
[   14.792858] HDA Intel 0000:03:00.1: setting latency timer to 64
[   14.815301] Console: switching to colour frame buffer device 80x30
[   14.869843] type=1505 audit(1338897076.672:8):  operation="profile_load" 
pid=929 name="/usr/sbin/tcpdump"
[   14.870062] type=1505 audit(1338897076.672:9):  operation="profile_replace" 
pid=925 name="/sbin/dhclient3"
[   14.870096] type=1505 audit(1338897076.672:10):  operation="profile_load" 
pid=924 name="/usr/share/gdm/guest-session/Xsession"
[   14.870333] type=1505 audit(1338897076.672:11):  operation="profile_load" 
pid=928 name="/usr/lib/cups/backend/cups-pdf"
[   14.978441] r8169: eth0: link up
[   14.978447] r8169: eth0: link up
[   15.125033] ppdev: user-space parallel port driver
[   15.277182] input: ImExPS/2 Logitech Explorer Mouse as 
/devices/platform/i8042/serio1/input/input5
[   15.297462] CPU0 attaching NULL sched-domain.
[   15.297466] CPU1 attaching NULL sched-domain.
[   15.297467] CPU2 attaching NULL sched-domain.
[   15.297469] CPU3 attaching NULL sched-domain.
[   15.297470] CPU4 attaching NULL sched-domain.
[   15.297471] CPU5 attaching NULL sched-domain.
[   15.297472] CPU6 attaching NULL sched-domain.
[   15.297474] CPU7 attaching NULL sched-domain.
[   15.399826] CPU0 attaching sched-domain:
[   15.399829]  domain 0: span 0,4 level SIBLING
[   15.399830]   groups: 0 (cpu_power = 589) 4 (cpu_power = 589)
[   15.399834]   domain 1: span 0-7 level MC
[   15.399835]    groups: 0,4 (cpu_power = 1178) 1,5 (cpu_power = 1178) 2,6 
(cpu_power = 1178) 3,7 (cpu_power = 1178)
[   15.399841] CPU1 attaching sched-domain:
[   15.399842]  domain 0: span 1,5 level SIBLING
[   15.399844]   groups: 1 (cpu_power = 589) 5 (cpu_power = 589)
[   15.399847]   domain 1: span 0-7 level MC
[   15.399848]    groups: 1,5 (cpu_power = 1178) 2,6 (cpu_power = 1178) 3,7 
(cpu_power = 1178) 0,4 (cpu_power = 1178)
[   15.399853] CPU2 attaching sched-domain:
[   15.399855]  domain 0: span 2,6 level SIBLING
[   15.399856]   groups: 2 (cpu_power = 589) 6 (cpu_power = 589)
[   15.399859]   domain 1: span 0-7 level MC
[   15.399860]    groups: 2,6 (cpu_power = 1178) 3,7 (cpu_power = 1178) 0,4 
(cpu_power = 1178) 1,5 (cpu_power = 1178)
[   15.399866] CPU3 attaching sched-domain:
[   15.399867]  domain 0: span 3,7 level SIBLING
[   15.399868]   groups: 3 (cpu_power = 589) 7 (cpu_power = 589)
[   15.399871]   domain 1: span 0-7 level MC
[   15.399873]    groups: 3,7 (cpu_power = 1178) 0,4 (cpu_power = 1178) 1,5 
(cpu_power = 1178) 2,6 (cpu_power = 1178)
[   15.399878] CPU4 attaching sched-domain:
[   15.399879]  domain 0: span 0,4 level SIBLING
[   15.399881]   groups: 4 (cpu_power = 589) 0 (cpu_power = 589)
[   15.399884]   domain 1: span 0-7 level MC
[   15.399885]    groups: 0,4 (cpu_power = 1178) 1,5 (cpu_power = 1178) 2,6 
(cpu_power = 1178) 3,7 (cpu_power = 1178)
[   15.399890] CPU5 attaching sched-domain:
[   15.399892]  domain 0: span 1,5 level SIBLING
[   15.399893]   groups: 5 (cpu_power = 589) 1 (cpu_power = 589)
[   15.399896]   domain 1: span 0-7 level MC
[   15.399897]    groups: 1,5 (cpu_power = 1178) 2,6 (cpu_power = 1178) 3,7 
(cpu_power = 1178) 0,4 (cpu_power = 1178)
[   15.399902] CPU6 attaching sched-domain:
[   15.399904]  domain 0: span 2,6 level SIBLING
[   15.399905]   groups: 6 (cpu_power = 589) 2 (cpu_power = 589)
[   15.399908]   domain 1: span 0-7 level MC
[   15.399909]    groups: 2,6 (cpu_power = 1178) 3,7 (cpu_power = 1178) 0,4 
(cpu_power = 1178) 1,5 (cpu_power = 1178)
[   15.399915] CPU7 attaching sched-domain:
[   15.399916]  domain 0: span 3,7 level SIBLING
[   15.399917]   groups: 7 (cpu_power = 589) 3 (cpu_power = 589)
[   15.399920]   domain 1: span 0-7 level MC
[   15.399921]    groups: 3,7 (cpu_power = 1178) 0,4 (cpu_power = 1178) 1,5 
(cpu_power = 1178) 2,6 (cpu_power = 1178)
[   15.400403] CPU0 attaching NULL sched-domain.
[   15.400405] CPU1 attaching NULL sched-domain.
[   15.400406] CPU2 attaching NULL sched-domain.
[   15.400408] CPU3 attaching NULL sched-domain.
[   15.400409] CPU4 attaching NULL sched-domain.
[   15.400410] CPU5 attaching NULL sched-domain.
[   15.400411] CPU6 attaching NULL sched-domain.
[   15.400412] CPU7 attaching NULL sched-domain.
[   15.549803] CPU0 attaching sched-domain:
[   15.549805]  domain 0: span 0,4 level SIBLING
[   15.549806]   groups: 0 (cpu_power = 589) 4 (cpu_power = 589)
[   15.549809]   domain 1: span 0-7 level MC
[   15.549811]    groups: 0,4 (cpu_power = 1178) 1,5 (cpu_power = 1178) 2,6 
(cpu_power = 1178) 3,7 (cpu_power = 1178)
[   15.549816] CPU1 attaching sched-domain:
[   15.549818]  domain 0: span 1,5 level SIBLING
[   15.549819]   groups: 1 (cpu_power = 589) 5 (cpu_power = 589)
[   15.549822]   domain 1: span 0-7 level MC
[   15.549823]    groups: 1,5 (cpu_power = 1178) 2,6 (cpu_power = 1178) 3,7 
(cpu_power = 1178) 0,4 (cpu_power = 1178)
[   15.549829] CPU2 attaching sched-domain:
[   15.549830]  domain 0: span 2,6 level SIBLING
[   15.549831]   groups: 2 (cpu_power = 589) 6 (cpu_power = 589)
[   15.549834]   domain 1: span 0-7 level MC
[   15.549835]    groups: 2,6 (cpu_power = 1178) 3,7 (cpu_power = 1178) 0,4 
(cpu_power = 1178) 1,5 (cpu_power = 1178)
[   15.549841] CPU3 attaching sched-domain:
[   15.549842]  domain 0: span 3,7 level SIBLING
[   15.549843]   groups: 3 (cpu_power = 589) 7 (cpu_power = 589)
[   15.549846]   domain 1: span 0-7 level MC
[   15.549847]    groups: 3,7 (cpu_power = 1178) 0,4 (cpu_power = 1178) 1,5 
(cpu_power = 1178) 2,6 (cpu_power = 1178)
[   15.549853] CPU4 attaching sched-domain:
[   15.549854]  domain 0: span 0,4 level SIBLING
[   15.549855]   groups: 4 (cpu_power = 589) 0 (cpu_power = 589)
[   15.549858]   domain 1: span 0-7 level MC
[   15.549859]    groups: 0,4 (cpu_power = 1178) 1,5 (cpu_power = 1178) 2,6 
(cpu_power = 1178) 3,7 (cpu_power = 1178)
[   15.549865] CPU5 attaching sched-domain:
[   15.549866]  domain 0: span 1,5 level SIBLING
[   15.549867]   groups: 5 (cpu_power = 589) 1 (cpu_power = 589)
[   15.549870]   domain 1: span 0-7 level MC
[   15.549872]    groups: 1,5 (cpu_power = 1178) 2,6 (cpu_power = 1178) 3,7 
(cpu_power = 1178) 0,4 (cpu_power = 1178)
[   15.549877] CPU6 attaching sched-domain:
[   15.549878]  domain 0: span 2,6 level SIBLING
[   15.549879]   groups: 6 (cpu_power = 589) 2 (cpu_power = 589)
[   15.549882]   domain 1: span 0-7 level MC
[   15.549884]    groups: 2,6 (cpu_power = 1178) 3,7 (cpu_power = 1178) 0,4 
(cpu_power = 1178) 1,5 (cpu_power = 1178)
[   15.549889] CPU7 attaching sched-domain:
[   15.549890]  domain 0: span 3,7 level SIBLING
[   15.549891]   groups: 7 (cpu_power = 589) 3 (cpu_power = 589)
[   15.549894]   domain 1: span 0-7 level MC
[   15.549896]    groups: 3,7 (cpu_power = 1178) 0,4 (cpu_power = 1178) 1,5 
(cpu_power = 1178) 2,6 (cpu_power = 1178)
[   15.967976] ieee1394: Host added: ID:BUS[0-00:1023]  GUID[00395898001c6f65]
[   19.571372] CPU0 attaching NULL sched-domain.
[   19.571376] CPU1 attaching NULL sched-domain.
[   19.571377] CPU2 attaching NULL sched-domain.
[   19.571379] CPU3 attaching NULL sched-domain.
[   19.571380] CPU4 attaching NULL sched-domain.
[   19.571381] CPU5 attaching NULL sched-domain.
[   19.571382] CPU6 attaching NULL sched-domain.
[   19.571384] CPU7 attaching NULL sched-domain.
[   19.679513] CPU0 attaching sched-domain:
[   19.679515]  domain 0: span 0,4 level SIBLING
[   19.679517]   groups: 0 (cpu_power = 589) 4 (cpu_power = 589)
[   19.679520]   domain 1: span 0-7 level MC
[   19.679522]    groups: 0,4 (cpu_power = 1178) 1,5 (cpu_power = 1178) 2,6 
(cpu_power = 1178) 3,7 (cpu_power = 1178)
[   19.679528] CPU1 attaching sched-domain:
[   19.679529]  domain 0: span 1,5 level SIBLING
[   19.679530]   groups: 1 (cpu_power = 589) 5 (cpu_power = 589)
[   19.679533]   domain 1: span 0-7 level MC
[   19.679534]    groups: 1,5 (cpu_power = 1178) 2,6 (cpu_power = 1178) 3,7 
(cpu_power = 1178) 0,4 (cpu_power = 1178)
[   19.679540] CPU2 attaching sched-domain:
[   19.679541]  domain 0: span 2,6 level SIBLING
[   19.679542]   groups: 2 (cpu_power = 589) 6 (cpu_power = 589)
[   19.679545]   domain 1: span 0-7 level MC
[   19.679546]    groups: 2,6 (cpu_power = 1178) 3,7 (cpu_power = 1178) 0,4 
(cpu_power = 1178) 1,5 (cpu_power = 1178)
[   19.679551] CPU3 attaching sched-domain:
[   19.679552]  domain 0: span 3,7 level SIBLING
[   19.679554]   groups: 3 (cpu_power = 589) 7 (cpu_power = 589)
[   19.679557]   domain 1: span 0-7 level MC
[   19.679558]    groups: 3,7 (cpu_power = 1178) 0,4 (cpu_power = 1178) 1,5 
(cpu_power = 1178) 2,6 (cpu_power = 1178)
[   19.679563] CPU4 attaching sched-domain:
[   19.679564]  domain 0: span 0,4 level SIBLING
[   19.679566]   groups: 4 (cpu_power = 589) 0 (cpu_power = 589)
[   19.679569]   domain 1: span 0-7 level MC
[   19.679570]    groups: 0,4 (cpu_power = 1178) 1,5 (cpu_power = 1178) 2,6 
(cpu_power = 1178) 3,7 (cpu_power = 1178)
[   19.679575] CPU5 attaching sched-domain:
[   19.679576]  domain 0: span 1,5 level SIBLING
[   19.679577]   groups: 5 (cpu_power = 589) 1 (cpu_power = 589)
[   19.679580]   domain 1: span 0-7 level MC
[   19.679582]    groups: 1,5 (cpu_power = 1178) 2,6 (cpu_power = 1178) 3,7 
(cpu_power = 1178) 0,4 (cpu_power = 1178)
[   19.679587] CPU6 attaching sched-domain:
[   19.679588]  domain 0: span 2,6 level SIBLING
[   19.679589]   groups: 6 (cpu_power = 589) 2 (cpu_power = 589)
[   19.679592]   domain 1: span 0-7 level MC
[   19.679593]    groups: 2,6 (cpu_power = 1178) 3,7 (cpu_power = 1178) 0,4 
(cpu_power = 1178) 1,5 (cpu_power = 1178)
[   19.679599] CPU7 attaching sched-domain:
[   19.679600]  domain 0: span 3,7 level SIBLING
[   19.679601]   groups: 7 (cpu_power = 589) 3 (cpu_power = 589)
[   19.679604]   domain 1: span 0-7 level MC
[   19.679605]    groups: 3,7 (cpu_power = 1178) 0,4 (cpu_power = 1178) 1,5 
(cpu_power = 1178) 2,6 (cpu_power = 1178)
[   19.680085] CPU0 attaching NULL sched-domain.
[   19.680087] CPU1 attaching NULL sched-domain.
[   19.680089] CPU2 attaching NULL sched-domain.
[   19.680090] CPU3 attaching NULL sched-domain.
[   19.680091] CPU4 attaching NULL sched-domain.
[   19.680092] CPU5 attaching NULL sched-domain.
[   19.680093] CPU6 attaching NULL sched-domain.
[   19.680094] CPU7 attaching NULL sched-domain.
[   19.859511] CPU0 attaching sched-domain:
[   19.859514]  domain 0: span 0,4 level SIBLING
[   19.859516]   groups: 0 (cpu_power = 589) 4 (cpu_power = 589)
[   19.859519]   domain 1: span 0-7 level MC
[   19.859521]    groups: 0,4 (cpu_power = 1178) 1,5 (cpu_power = 1178) 2,6 
(cpu_power = 1178) 3,7 (cpu_power = 1178)
[   19.859527] CPU1 attaching sched-domain:
[   19.859528]  domain 0: span 1,5 level SIBLING
[   19.859530]   groups: 1 (cpu_power = 589) 5 (cpu_power = 589)
[   19.859533]   domain 1: span 0-7 level MC
[   19.859534]    groups: 1,5 (cpu_power = 1178) 2,6 (cpu_power = 1178) 3,7 
(cpu_power = 1178) 0,4 (cpu_power = 1178)
[   19.859539] CPU2 attaching sched-domain:
[   19.859540]  domain 0: span 2,6 level SIBLING
[   19.859541]   groups: 2 (cpu_power = 589) 6 (cpu_power = 589)
[   19.859544]   domain 1: span 0-7 level MC
[   19.859546]    groups: 2,6 (cpu_power = 1178) 3,7 (cpu_power = 1178) 0,4 
(cpu_power = 1178) 1,5 (cpu_power = 1178)
[   19.859551] CPU3 attaching sched-domain:
[   19.859552]  domain 0: span 3,7 level SIBLING
[   19.859553]   groups: 3 (cpu_power = 589) 7 (cpu_power = 589)
[   19.859556]   domain 1: span 0-7 level MC
[   19.859558]    groups: 3,7 (cpu_power = 1178) 0,4 (cpu_power = 1178) 1,5 
(cpu_power = 1178) 2,6 (cpu_power = 1178)
[   19.859563] CPU4 attaching sched-domain:
[   19.859564]  domain 0: span 0,4 level SIBLING
[   19.859565]   groups: 4 (cpu_power = 589) 0 (cpu_power = 589)
[   19.859568]   domain 1: span 0-7 level MC
[   19.859569]    groups: 0,4 (cpu_power = 1178) 1,5 (cpu_power = 1178) 2,6 
(cpu_power = 1178) 3,7 (cpu_power = 1178)
[   19.859575] CPU5 attaching sched-domain:
[   19.859576]  domain 0: span 1,5 level SIBLING
[   19.859577]   groups: 5 (cpu_power = 589) 1 (cpu_power = 589)
[   19.859580]   domain 1: span 0-7 level MC
[   19.859581]    groups: 1,5 (cpu_power = 1178) 2,6 (cpu_power = 1178) 3,7 
(cpu_power = 1178) 0,4 (cpu_power = 1178)
[   19.859586] CPU6 attaching sched-domain:
[   19.859588]  domain 0: span 2,6 level SIBLING
[   19.859589]   groups: 6 (cpu_power = 589) 2 (cpu_power = 589)
[   19.859592]   domain 1: span 0-7 level MC
[   19.859593]    groups: 2,6 (cpu_power = 1178) 3,7 (cpu_power = 1178) 0,4 
(cpu_power = 1178) 1,5 (cpu_power = 1178)
[   19.859598] CPU7 attaching sched-domain:
[   19.859599]  domain 0: span 3,7 level SIBLING
[   19.859601]   groups: 7 (cpu_power = 589) 3 (cpu_power = 589)
[   19.859604]   domain 1: span 0-7 level MC
[   19.859605]    groups: 3,7 (cpu_power = 1178) 0,4 (cpu_power = 1178) 1,5 
(cpu_power = 1178) 2,6 (cpu_power = 1178)
[   25.007180] eth0: no IPv6 routers present
[  109.810917] usb 2-1: new high speed USB device using ehci_hcd and address 2
[  114.747270] usb 2-1: configuration #1 chosen from 1 choice
[  114.797808] Initializing USB Mass Storage driver...
[  114.797949] scsi12 : SCSI emulation for USB Mass Storage devices
[  114.798039] usb-storage: device found at 2
[  114.798042] usb-storage: waiting for device to settle before scanning
[  114.798057] usbcore: registered new interface driver usb-storage
[  114.798059] USB Mass Storage support registered.
[  119.790333] usb-storage: device scan complete
[  119.790813] scsi 12:0:0:0: Direct-Access              USB DISK         1.00 
PQ: 0 ANSI: 0
[  119.791310] sd 12:0:0:0: Attached scsi generic sg2 type 0
[  119.793192] sd 12:0:0:0: [sdb] 15949824 512-byte logical blocks: (8.16 
GB/7.60 GiB)
[  119.920167] usb 2-1: reset high speed USB device using ehci_hcd and address 2
[  120.200143] usb 2-1: reset high speed USB device using ehci_hcd and address 2
[  120.480142] usb 2-1: reset high speed USB device using ehci_hcd and address 2
[  125.629948] usb 2-1: device descriptor read/all, error -110
[  125.749741] usb 2-1: reset high speed USB device using ehci_hcd and address 2
[  126.030335] usb 2-1: reset high speed USB device using ehci_hcd and address 2
[  130.149412] usb 2-1: reset high speed USB device using ehci_hcd and address 2
[  145.268292] usb 2-1: device descriptor read/64, error -110
[  160.497163] usb 2-1: device descriptor read/64, error -110
[  160.727146] usb 2-1: reset high speed USB device using ehci_hcd and address 2
[  175.846026] usb 2-1: device descriptor read/64, error -110
[  188.147231] ehci_hcd 0000:00:1d.7: port 1 reset error -110
[  188.148736] ehci_hcd 0000:00:1d.7: port 1 reset error -110
[  188.150239] ehci_hcd 0000:00:1d.7: port 1 reset error -110
[  188.151742] ehci_hcd 0000:00:1d.7: port 1 reset error -110
[  188.153245] ehci_hcd 0000:00:1d.7: port 1 reset error -110
[  188.153249] hub 2-0:1.0: hub_port_status failed (err = -32)
[  188.355138] usb 2-1: USB disconnect, address 2
[  188.355154] sd 12:0:0:0: Device offlined - not ready after error recovery
[  188.355173] sd 12:0:0:0: [sdb] Write Protect is off
[  188.355177] sd 12:0:0:0: [sdb] Mode Sense: 03 00 00 00
[  188.355180] sd 12:0:0:0: [sdb] Assuming drive cache: write through
[  188.355375] sd 12:0:0:0: [sdb] Attached SCSI removable disk
[  192.114823] usb 2-1: new high speed USB device using ehci_hcd and address 3
[  202.054944] hub 2-0:1.0: unable to enumerate USB device on port 1
[  227.412219] usb 2-1: new high speed USB device using ehci_hcd and address 4
[  227.563159] usb 2-1: configuration #1 chosen from 1 choice
[  227.563326] scsi13 : SCSI emulation for USB Mass Storage devices
[  227.563424] usb-storage: device found at 4
[  227.563427] usb-storage: waiting for device to settle before scanning
[  232.561961] usb-storage: device scan complete
[  232.562440] scsi 13:0:0:0: Direct-Access              USB DISK         1.00 
PQ: 0 ANSI: 0
[  232.562958] sd 13:0:0:0: Attached scsi generic sg2 type 0
[  232.564192] sd 13:0:0:0: [sdb] 15949824 512-byte logical blocks: (8.16 
GB/7.60 GiB)
[  232.691819] usb 2-1: reset high speed USB device using ehci_hcd and address 4
[  247.810699] usb 2-1: device descriptor read/64, error -110
[  263.039567] usb 2-1: device descriptor read/64, error -110
[  263.269554] usb 2-1: reset high speed USB device using ehci_hcd and address 4
[  278.388434] usb 2-1: device descriptor read/64, error -110
[  293.617306] usb 2-1: device descriptor read/64, error -110
[  293.847289] usb 2-1: reset high speed USB device using ehci_hcd and address 4
[  298.876966] usb 2-1: device descriptor read/8, error -110
[  304.006702] usb 2-1: device descriptor read/8, error -110
[  304.236520] usb 2-1: reset high speed USB device using ehci_hcd and address 4
[  309.266198] usb 2-1: device descriptor read/8, error -110
[  314.395934] usb 2-1: device descriptor read/8, error -110
[  314.505783] usb 2-1: USB disconnect, address 4
[  314.505800] sd 13:0:0:0: Device offlined - not ready after error recovery
[  314.505820] sd 13:0:0:0: [sdb] Write Protect is off
[  314.505824] sd 13:0:0:0: [sdb] Mode Sense: 03 00 00 00
[  314.505827] sd 13:0:0:0: [sdb] Assuming drive cache: write through
[  314.506018] sd 13:0:0:0: [sdb] Attached SCSI removable disk
[  314.667618] usb 2-1: new high speed USB device using ehci_hcd and address 5
[  329.784628] usb 2-1: device descriptor read/64, error -110
[  345.013500] usb 2-1: device descriptor read/64, error -110
[  345.243483] usb 2-1: new high speed USB device using ehci_hcd and address 6
[  360.362364] usb 2-1: device descriptor read/64, error -110
[  375.591237] usb 2-1: device descriptor read/64, error -110
[  375.821219] usb 2-1: new high speed USB device using ehci_hcd and address 7
[  380.850992] usb 2-1: device descriptor read/8, error -110
[  385.980607] usb 2-1: device descriptor read/8, error -110
[  386.210450] usb 2-1: new high speed USB device using ehci_hcd and address 8
[  391.240224] usb 2-1: device descriptor read/8, error -110
[  396.369961] usb 2-1: device descriptor read/8, error -110
[  396.479695] hub 2-0:1.0: unable to enumerate USB device on port 1
[  396.799665] usb 6-1: new full speed USB device using uhci_hcd and address 2
[  411.918545] usb 6-1: device descriptor read/64, error -110
[  427.147417] usb 6-1: device descriptor read/64, error -110
[  427.377400] usb 6-1: new full speed USB device using uhci_hcd and address 3
[  442.496282] usb 6-1: device descriptor read/64, error -110
[  457.725154] usb 6-1: device descriptor read/64, error -110
[  457.955136] usb 6-1: new full speed USB device using uhci_hcd and address 4
[  462.976001] usb 6-1: device descriptor read/8, error -110
[  468.106363] usb 6-1: device descriptor read/8, error -110
[  468.334367] usb 6-1: new full speed USB device using uhci_hcd and address 5
[  473.355731] usb 6-1: device descriptor read/8, error -110
[  478.485093] usb 6-1: device descriptor read/8, error -110
[  478.593617] hub 6-0:1.0: unable to enumerate USB device on port 1

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https://bugs.launchpad.net/bugs/991822

Title:
  MP4 player does not mount

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