LinuxQuestions.org - Realtek card reader reports as an external USB storage when empty

Hi everyone and thanks for helping

I have a Toshiba Satellite L305-S5939 laptop and recently I noticed that when I was in Windows 7 and card reader was empty, it was still showing as a removable disk in 'My Computer'. At first I thought it was a driver problem. Then I formatted the hard disk and wanted to install OpenBSD on it (for learning purposes) and I got the AHCI PHY offline error. The result was that it couldn't access the CD-ROM and thus couldn't install the OS.

After that I went for installing Arch and in the TTY, this error showed up every minute:

Code:

sd 6:0:0:0: [sdb] Assuming drive cache: write through

sd 6:0:0:0: [sdb] Asking for cache data failed

So I ran 'dmesg | grep ahci -A 500' and got this (sda is the main hdd and sdc is Arch live usb):

Code:

[    6.526722] ahci 0000:00:1f.2: version 3.0

[    6.526942] ahci 0000:00:1f.2: irq 45 for MSI/MSI-X

[    6.527039] ahci 0000:00:1f.2: AHCI 0001.0200 32 slots 4 ports 3 Gbps 0x33 impl SATA mode

[    6.527043] ahci 0000:00:1f.2: flags: 64bit ncq sntf ilck pm led clo pmp pio slum part ccc ems sxs 

[    6.547413] scsi0 : ahci

[    6.547516] scsi1 : ahci

[    6.547595] scsi2 : ahci

[    6.547684] scsi3 : ahci

[    6.547762] scsi4 : ahci

[    6.547842] scsi5 : ahci

[    6.547898] ata1: SATA max UDMA/133 abar m2048@0xd6705000 port 0xd6705100 irq 45

[    6.547902] ata2: SATA max UDMA/133 abar m2048@0xd6705000 port 0xd6705180 irq 45

[    6.547904] ata3: DUMMY

[    6.547906] ata4: DUMMY

[    6.547909] ata5: SATA max UDMA/133 abar m2048@0xd6705000 port 0xd6705300 irq 45

[    6.547912] ata6: SATA max UDMA/133 abar m2048@0xd6705000 port 0xd6705380 irq 45

[    6.548889] ehci-pci 0000:00:1d.7: EHCI Host Controller

[    6.548942] ehci-pci 0000:00:1d.7: new USB bus registered, assigned bus number 8

[    6.548962] ehci-pci 0000:00:1d.7: debug port 1

[    6.552874] ehci-pci 0000:00:1d.7: cache line size of 64 is not supported

[    6.552883] ehci-pci 0000:00:1d.7: irq 23, io mem 0xd6705800

[    6.560019] ehci-pci 0000:00:1d.7: USB 2.0 started, EHCI 1.00

[    6.560231] hub 8-0:1.0: USB hub found

[    6.560241] hub 8-0:1.0: 8 ports detected

[    6.583395] hub 4-0:1.0: USB hub found

[    6.583404] hub 4-0:1.0: 2 ports detected

[    6.606743] hub 5-0:1.0: USB hub found

[    6.606753] hub 5-0:1.0: 2 ports detected

[    6.630074] hub 6-0:1.0: USB hub found

[    6.630084] hub 6-0:1.0: 2 ports detected

[    6.653396] hub 7-0:1.0: USB hub found

[    6.653405] hub 7-0:1.0: 2 ports detected

[    6.830026] usb 1-2: new high-speed USB device number 2 using ehci-pci

[    6.866722] ata5: SATA link down (SStatus 0 SControl 300)

[    6.866756] ata2: SATA link down (SStatus 0 SControl 300)

[    6.930019] tsc: Refined TSC clocksource calibration: 1994.999 MHz

[    7.033356] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300)

[    7.079809] ata1.00: ATA-8: WDC WD3200BEVS-26VAT0, 11.01A11, max UDMA/133

[    7.079812] ata1.00: 625142448 sectors, multi 0: LBA48 NCQ (depth 31/32), AA

[    7.082428] ata1.00: configured for UDMA/133

[    7.082572] scsi 0:0:0:0: Direct-Access    ATA      WDC WD3200BEVS-2 11.0 PQ: 0 ANSI: 5

[    7.100037] usb 1-4: new high-speed USB device number 3 using ehci-pci

[    7.196693] ata6: SATA link up 1.5 Gbps (SStatus 113 SControl 300)

[    7.209365] ata6.00: ATAPI: TSSTcorp CDDVDW TS-L633A, TO01, max UDMA/100

[    7.222687] ata6.00: configured for UDMA/100

[    7.316279] scsi 5:0:0:0: CD-ROM            TSSTcorp CDDVDW TS-L633A  TO01 PQ: 0 ANSI: 5

[    7.320583] sd 0:0:0:0: [sda] 625142448 512-byte logical blocks: (320 GB/298 GiB)

[    7.320656] sd 0:0:0:0: [sda] Write Protect is off

[    7.320660] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00

[    7.320704] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA

[    7.371569]  sda: unknown partition table

[    7.371829] sd 0:0:0:0: [sda] Attached SCSI disk

[    7.381703] sr0: scsi3-mmc drive: 8x/24x writer dvd-ram cd/rw xa/form2 cdda tray

[    7.381706] cdrom: Uniform CD-ROM driver Revision: 3.20

[    7.381868] sr 5:0:0:0: Attached scsi CD-ROM sr0

[    7.476198] usbcore: registered new interface driver usb-storage

[    7.476567] ums-realtek 1-4:1.0: USB Mass Storage device detected

[    7.479273] scsi6 : usb-storage 1-4:1.0

[    7.479363] usbcore: registered new interface driver ums-realtek

[    7.686707] usb 8-3: new high-speed USB device number 4 using ehci-pci

[    7.812853] usb-storage 8-3:1.0: USB Mass Storage device detected

[    7.812934] scsi7 : usb-storage 8-3:1.0

[    7.930062] Switched to clocksource tsc

[    8.240020] usb 4-1: new low-speed USB device number 2 using uhci_hcd

[    8.409631] hidraw: raw HID events driver (C) Jiri Kosina

[    8.430690] usbcore: registered new interface driver usbhid

[    8.430692] usbhid: USB HID core driver

[    8.431531] input: Avant Com  ViSta  Mouse  as /devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1:1.0/input/input6

[    8.431612] hid-generic 0003:0C45:5208.0001: input,hidraw0: USB HID v1.10 Mouse [Avant Com  ViSta  Mouse ] on usb-0000:00:1d.0-1/input0

[    8.482133] scsi 6:0:0:0: Direct-Access    Generic- Multi-Card      1.00 PQ: 0 ANSI: 0 CCS

[    8.633352] usb 4-2: new low-speed USB device number 3 using uhci_hcd

[    8.814072] scsi 7:0:0:0: Direct-Access    JetFlash Transcend 4GB    8.07 PQ: 0 ANSI: 2

[    8.815692] sd 7:0:0:0: [sdc] 7886848 512-byte logical blocks: (4.03 GB/3.76 GiB)

[    8.816311] sd 7:0:0:0: [sdc] Write Protect is off

[    8.816315] sd 7:0:0:0: [sdc] Mode Sense: 03 00 00 00

[    8.816934] sd 7:0:0:0: [sdc] No Caching mode page found

[    8.816973] sd 7:0:0:0: [sdc] Assuming drive cache: write through

[    8.819809] sd 7:0:0:0: [sdc] No Caching mode page found

[    8.819843] sd 7:0:0:0: [sdc] Assuming drive cache: write through

[    8.918322]  sdc: sdc1 sdc2

[    8.923310] sd 7:0:0:0: [sdc] No Caching mode page found

[    8.923359] sd 7:0:0:0: [sdc] Assuming drive cache: write through

[    8.923396] sd 7:0:0:0: [sdc] Attached SCSI removable disk

[    8.933897] input:  USB Keyboard as /devices/pci0000:00/0000:00:1d.0/usb4/4-2/4-2:1.0/input/input7

[    8.933972] hid-generic 0003:04D9:1603.0002: input,hidraw1: USB HID v1.10 Keyboard [  USB Keyboard] on usb-0000:00:1d.0-2/input0

[    9.026444] input:  USB Keyboard as /devices/pci0000:00/0000:00:1d.0/usb4/4-2/4-2:1.1/input/input8

[    9.026517] hid-generic 0003:04D9:1603.0003: input,hidraw2: USB HID v1.10 Device [  USB Keyboard] on usb-0000:00:1d.0-2/input1

[    9.094307] ISO 9660 Extensions: RRIP_1991A

[    9.104267] loop: module loaded

[    9.180885] squashfs: version 4.0 (2009/01/31) Phillip Lougher

[    9.195211] device-mapper: uevent: version 1.0.3

[    9.195402] device-mapper: ioctl: 4.27.0-ioctl (2013-10-30) initialised: dm-devel@redhat.com

[    9.196035] random: dmsetup urandom read with 103 bits of entropy available

[    9.199430] bio: create slab <bio-1> at 1

[    9.216081] EXT4-fs (dm-0): mounted filesystem without journal. Opts: (null)

[    9.663529] systemd[1]: systemd 208 running in system mode. (+PAM -LIBWRAP -AUDIT -SELINUX -IMA -SYSVINIT +LIBCRYPTSETUP +GCRYPT +ACL +XZ)

[    9.670496] systemd[1]: Set hostname to <archiso>.

[    9.736072] random: nonblocking pool is initialized

[    9.759805] systemd[1]: Starting Forward Password Requests to Wall Directory Watch.

[    9.759881] systemd[1]: Started Forward Password Requests to Wall Directory Watch.

[    9.759896] systemd[1]: Starting Remote File Systems.

[    9.760055] systemd[1]: Reached target Remote File Systems.

[    9.760067] systemd[1]: Starting Root Slice.

[    9.760332] systemd[1]: Created slice Root Slice.

[    9.760343] systemd[1]: Starting User and Session Slice.

[    9.760526] systemd[1]: Created slice User and Session Slice.

[    9.760538] systemd[1]: Starting System Slice.

[    9.760688] systemd[1]: Created slice System Slice.

[    9.760700] systemd[1]: Starting system-getty.slice.

[    9.760871] systemd[1]: Created slice system-getty.slice.

[    9.760883] systemd[1]: Starting Slices.

[    9.760972] systemd[1]: Reached target Slices.

[    9.760983] systemd[1]: Starting Delayed Shutdown Socket.

[    9.761107] systemd[1]: Listening on Delayed Shutdown Socket.

[    9.761118] systemd[1]: Starting Device-mapper event daemon FIFOs.

[    9.761239] systemd[1]: Listening on Device-mapper event daemon FIFOs.

[    9.761250] systemd[1]: Starting /dev/initctl Compatibility Named Pipe.

[    9.761364] systemd[1]: Listening on /dev/initctl Compatibility Named Pipe.

[    9.761404] systemd[1]: Starting Arbitrary Executable File Formats File System Automount Point.

[    9.761623] systemd[1]: Set up automount Arbitrary Executable File Formats File System Automount Point.

[    9.761640] systemd[1]: Starting Dispatch Password Requests to Console Directory Watch.

[    9.761682] systemd[1]: Started Dispatch Password Requests to Console Directory Watch.

[    9.761693] systemd[1]: Starting Paths.

[    9.762835] systemd[1]: Reached target Paths.

[    9.762847] systemd[1]: Starting LVM2 metadata daemon socket.

[    9.764005] systemd[1]: Listening on LVM2 metadata daemon socket.

[    9.764022] systemd[1]: Starting udev Kernel Socket.

[    9.765166] systemd[1]: Listening on udev Kernel Socket.

[    9.765180] systemd[1]: Starting udev Control Socket.

[    9.766305] systemd[1]: Listening on udev Control Socket.

[    9.766318] systemd[1]: Starting Encrypted Volumes.

[    9.767437] systemd[1]: Reached target Encrypted Volumes.

[    9.767451] systemd[1]: Starting Journal Socket.

[    9.768626] systemd[1]: Listening on Journal Socket.

[    9.768649] systemd[1]: Mounting POSIX Message Queue File System...

[    9.775652] systemd[1]: Starting Create list of required static device nodes for the current kernel...

[    9.795259] systemd[1]: Starting Apply Kernel Variables...

[    9.798248] systemd[1]: Starting udev Coldplug all Devices...

[    9.845948] systemd[1]: Starting Load Kernel Modules...

[    9.870204] systemd[1]: Started Set Up Additional Binary Formats.

[    9.870239] systemd[1]: Starting Setup Virtual Console...

[    9.872046] systemd[1]: Mounting Huge Pages File System...

[    9.874756] systemd[1]: Starting Journal Service...

[    9.877968] systemd[1]: Started Journal Service.

[  10.060063] systemd-journald[158]: Vacuuming done, freed 0 bytes

[  10.097365] FS-Cache: Loaded

[  10.162914] RPC: Registered named UNIX socket transport module.

[  10.162918] RPC: Registered udp transport module.

[  10.162919] RPC: Registered tcp transport module.

[  10.162921] RPC: Registered tcp NFSv4.1 backchannel transport module.

[  10.228037] systemd-udevd[180]: starting version 208

[  10.234975] FS-Cache: Netfs 'nfs' registered for caching

[  10.268105] systemd-journald[158]: Received request to flush runtime journal from PID 1

[  10.681428] ACPI: Battery Slot [BAT0] (battery absent)

[  10.687225] ACPI: AC Adapter [ADP0] (on-line)

[  10.693681] Monitor-Mwait will be used to enter C-1 state

[  10.693690] Monitor-Mwait will be used to enter C-2 state

[  10.693695] tsc: Marking TSC unstable due to TSC halts in idle

[  10.693733] ACPI: acpi_idle registered with cpuidle

[  10.693841] Switched to clocksource hpet

[  10.770019] shpchp: Standard Hot Plug PCI Controller Driver version: 0.4

[  10.875168] thermal LNXTHERM:00: registered as thermal_zone0

[  10.875180] ACPI: Thermal Zone [THRM] (67 C)

[  10.894117] wmi: Mapper loaded

[  10.920059] ACPI: Fan [FAN] (on)

[  11.057042] cfg80211: Calling CRDA to update world regulatory domain

[  11.089656] toshiba_acpi: Toshiba Laptop ACPI Extras version 0.19

[  11.090287] input: Toshiba input device as /devices/virtual/input/input9

[  11.185635] ACPI Warning: 0x0000000000000428-0x000000000000042f SystemIO conflicts with Region \PMBA 1 (20131115/utaddress-251)

[  11.185644] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver

[  11.185648] ACPI Warning: 0x0000000000000530-0x000000000000053f SystemIO conflicts with Region \GPIO 1 (20131115/utaddress-251)

[  11.185652] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver

[  11.185654] ACPI Warning: 0x0000000000000500-0x000000000000052f SystemIO conflicts with Region \GPIO 1 (20131115/utaddress-251)

[  11.185658] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver

[  11.185660] lpc_ich: Resource conflict(s) found affecting gpio_ich

[  11.186580] mousedev: PS/2 mouse device common for all mice

[  11.206829] systemd-udevd[201]: renamed network interface eth0 to enp2s0

[  11.405021] Intel(R) Wireless WiFi driver for Linux, in-tree:

[  11.405022] Copyright(c) 2003-2013 Intel Corporation

[  11.405287] iwlwifi 0000:03:00.0: can't disable ASPM; OS doesn't have ASPM control

[  11.405419] iwlwifi 0000:03:00.0: irq 46 for MSI/MSI-X

[  11.461129] input: PC Speaker as /devices/platform/pcspkr/input/input11

[  11.464956] snd_hda_intel 0000:00:1b.0: irq 47 for MSI/MSI-X

[  11.571249] iwlwifi 0000:03:00.0: loaded firmware version 8.83.5.1 build 33692 op_mode iwldvm

[  11.635052] microcode: CPU0 sig=0x1067a, pf=0x80, revision=0xa07

[  11.635101] platform microcode: Direct firmware load failed with error -2

[  11.635105] platform microcode: Falling back to user helper

[  11.635801] microcode: CPU1 sig=0x1067a, pf=0x80, revision=0xa07

[  11.635816] platform microcode: Direct firmware load failed with error -2

[  11.635819] platform microcode: Falling back to user helper

[  11.636318] microcode: Microcode Update Driver: v2.00 <tigran@aivazian.fsnet.co.uk>, Peter Oruba

[  11.657249] iTCO_vendor_support: vendor-support=0

[  11.659278] input: HDA Digital PCBeep as /devices/pci0000:00/0000:00:1b.0/input/input12

[  11.668847] input: HDA Intel Front Headphone as /devices/pci0000:00/0000:00:1b.0/sound/card0/input14

[  11.668987] input: HDA Intel Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input13

[  11.669558] i801_smbus 0000:00:1f.3: SMBus using PCI Interrupt

[  11.680112] media: Linux media interface: v0.10

[  11.696399] iTCO_wdt: Intel TCO WatchDog Timer Driver v1.10

[  11.696463] iTCO_wdt: Found a ICH9M TCO device (Version=2, TCOBASE=0x0460)

[  11.696592] iTCO_wdt: initialized. heartbeat=30 sec (nowayout=0)

[  11.737814] r8169 0000:02:00.0 enp2s0: link down

[  11.737855] IPv6: ADDRCONF(NETDEV_UP): enp2s0: link is not ready

[  11.764187] Linux video capture interface: v2.00

[  11.917550] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEBUG disabled

[  11.917557] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEBUGFS disabled

[  11.917559] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEVICE_TRACING enabled

[  11.917562] iwlwifi 0000:03:00.0: Detected Intel(R) WiFi Link 5100 AGN, REV=0x54

[  11.917674] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S

[  11.970293] uvcvideo: Found UVC 1.00 device CNF7051 (04f2:b070)

[  11.987314] input: CNF7051 as /devices/pci0000:00/0000:00:1a.7/usb1/1-2/1-2:1.0/input/input15

[  11.987627] usbcore: registered new interface driver uvcvideo

[  11.987630] USB Video Class driver (1.1.1)

[  12.004256] ieee80211 phy0: Selected rate control algorithm 'iwl-agn-rs'

[  12.020456] cfg80211: World regulatory domain updated:

[  12.020462] cfg80211:  (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)

[  12.020464] cfg80211:  (2402000 KHz - 2472000 KHz @ 40000 KHz), (N/A, 2000 mBm)

[  12.020467] cfg80211:  (2457000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 mBm)

[  12.020469] cfg80211:  (2474000 KHz - 2494000 KHz @ 20000 KHz), (N/A, 2000 mBm)

[  12.020471] cfg80211:  (5170000 KHz - 5250000 KHz @ 80000 KHz), (N/A, 2000 mBm)

[  12.020473] cfg80211:  (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 2000 mBm)

[  12.020475] cfg80211:  (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 0 mBm)

[  12.040131] systemd-udevd[198]: renamed network interface wlan0 to wlp3s0

[  12.488725] psmouse serio1: synaptics: Touchpad model: 1, fw: 6.3, id: 0x9280b1, caps: 0xa04711/0xa04000/0x0, board id: 3655, fw id: 430032

[  12.488732] psmouse serio1: synaptics: Toshiba Satellite L305 detected, limiting rate to 40pps.

[  12.562815] input: SynPS/2 Synaptics TouchPad as /devices/platform/i8042/serio1/input/input10

[  15.504891] sd 6:0:0:0: [sdb] Attached SCSI removable disk

[  15.536621] type=1006 audit(1393958445.082:2): pid=212 uid=0 old auid=4294967295 new auid=0 old ses=4294967295 new ses=1 res=1

[  15.546519] type=1006 audit(1393958445.092:3): pid=386 uid=0 old auid=4294967295 new auid=0 old ses=4294967295 new ses=2 res=1

[  62.899771] sd 6:0:0:0: [sdb] Test WP failed, assume Write Enabled

[  62.900767] sd 6:0:0:0: [sdb] Asking for cache data failed

[  62.900804] sd 6:0:0:0: [sdb] Assuming drive cache: write through

[  118.366506] sd 6:0:0:0: [sdb] Test WP failed, assume Write Enabled

[  118.367505] sd 6:0:0:0: [sdb] Asking for cache data failed

[  118.367543] sd 6:0:0:0: [sdb] Assuming drive cache: write through

[  140.093521] usb 4-1: USB disconnect, device number 2

[  142.306701] usb 8-1: new high-speed USB device number 5 using ehci-pci

[  142.435549] usb-storage 8-1:1.0: USB Mass Storage device detected

[  142.435648] scsi8 : usb-storage 8-1:1.0

[  143.478036] scsi 8:0:0:0: Direct-Access              silicon-power    PMAP PQ: 0 ANSI: 6

[  144.279407] sd 8:0:0:0: [sdd] 15638528 512-byte logical blocks: (8.00 GB/7.45 GiB)

[  144.280144] sd 8:0:0:0: [sdd] Write Protect is off

[  144.280148] sd 8:0:0:0: [sdd] Mode Sense: 23 00 00 00

[  144.280746] sd 8:0:0:0: [sdd] No Caching mode page found

[  144.280782] sd 8:0:0:0: [sdd] Assuming drive cache: write through

[  144.284626] sd 8:0:0:0: [sdd] No Caching mode page found

[  144.284670] sd 8:0:0:0: [sdd] Assuming drive cache: write through

[  144.308139]  sdd: sdd1

[  144.313121] sd 8:0:0:0: [sdd] No Caching mode page found

[  144.314370] sd 8:0:0:0: [sdd] Assuming drive cache: write through

[  144.315636] sd 8:0:0:0: [sdd] Attached SCSI removable disk

[  173.833581] sd 6:0:0:0: [sdb] Test WP failed, assume Write Enabled

[  173.834566] sd 6:0:0:0: [sdb] Asking for cache data failed

[  173.835756] sd 6:0:0:0: [sdb] Assuming drive cache: write through

[  178.183444] usb 8-1: USB disconnect, device number 5

[  229.301606] sd 6:0:0:0: [sdb] Test WP failed, assume Write Enabled

[  229.302602] sd 6:0:0:0: [sdb] Asking for cache data failed

[  229.303864] sd 6:0:0:0: [sdb] Assuming drive cache: write through

[  234.070031] usb 4-1: new low-speed USB device number 4 using uhci_hcd

[  234.259106] input: Avant Com  ViSta  Mouse  as /devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1:1.0/input/input16

[  234.259257] hid-generic 0003:0C45:5208.0004: input,hidraw0: USB HID v1.10 Mouse [Avant Com  ViSta  Mouse ] on usb-0000:00:1d.0-1/input0

[  284.774880] sd 6:0:0:0: [sdb] Test WP failed, assume Write Enabled

[  284.775867] sd 6:0:0:0: [sdb] Asking for cache data failed

[  284.775905] sd 6:0:0:0: [sdb] Assuming drive cache: write through

[  340.238048] sd 6:0:0:0: [sdb] Test WP failed, assume Write Enabled

[  340.239042] sd 6:0:0:0: [sdb] Asking for cache data failed

[  340.239079] sd 6:0:0:0: [sdb] Assuming drive cache: write through

[  395.706504] sd 6:0:0:0: [sdb] Test WP failed, assume Write Enabled

[  395.707488] sd 6:0:0:0: [sdb] Asking for cache data failed

[  395.707527] sd 6:0:0:0: [sdb] Assuming drive cache: write through

[  451.172567] sd 6:0:0:0: [sdb] Test WP failed, assume Write Enabled

[  451.173564] sd 6:0:0:0: [sdb] Asking for cache data failed

[  451.173603] sd 6:0:0:0: [sdb] Assuming drive cache: write through

[  506.635960] sd 6:0:0:0: [sdb] Test WP failed, assume Write Enabled

[  506.636957] sd 6:0:0:0: [sdb] Asking for cache data failed

[  506.636995] sd 6:0:0:0: [sdb] Assuming drive cache: write through

[  562.105553] sd 6:0:0:0: [sdb] Test WP failed, assume Write Enabled

[  562.106534] sd 6:0:0:0: [sdb] Asking for cache data failed

[  562.106572] sd 6:0:0:0: [sdb] Assuming drive cache: write through

[  617.567327] sd 6:0:0:0: [sdb] Test WP failed, assume Write Enabled

[  617.568322] sd 6:0:0:0: [sdb] Asking for cache data failed

[  617.568360] sd 6:0:0:0: [sdb] Assuming drive cache: write through

[  673.037146] sd 6:0:0:0: [sdb] Test WP failed, assume Write Enabled

[  673.038143] sd 6:0:0:0: [sdb] Asking for cache data failed

[  673.038180] sd 6:0:0:0: [sdb] Assuming drive cache: write through

And lsusb:

Code:

Bus 008 Device 004: ID 058f:6387 Alcor Micro Corp. Flash Drive

Bus 008 Device 009: ID 13fe:3623 Kingston Technology Company Inc. 

Bus 008 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 004 Device 003: ID 04d9:1603 Holtek Semiconductor, Inc. Keyboard

Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 001 Device 003: ID 0bda:0158 Realtek Semiconductor Corp. USB 2.0 multicard reader

Bus 001 Device 002: ID 04f2:b070 Chicony Electronics Co., Ltd 

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

What might be the problem?