Ubuntu 16.04.2 LTS ne trouve pas la carte micro SD

• Carte SanDisk micro sd 32gb
• Lecteur de carte Transcend MicroSD
• Ubuntu 16.04.2

Lors d'une installation de motioneyeos J'ai remarqué que le /dev/mmcblk* ne sont pas là. J'ai vérifié lsusb -a et voir que le lecteur de carte est détecté :

Bus 003 Device 007: ID 8564:4000 Transcend Information, Inc. RDF8

J'ai vérifié dmesg et voir :

dmesg | grep sdb

[    4.277771] sd 5:0:0:0: [sdb] 62333952 512-byte logical blocks:(31.9GB/29.7 GiB)
[    4.278644] sd 5:0:0:0: [sdb] Write Protect is off
[    4.278647] sd 5:0:0:0: [sdb] Mode Sense: 23 00 00 00
[    4.279518] sd 5:0:0:0: [sdb] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[    4.283747]  sdb:
[    4.286514] sd 5:0:0:0: [sdb] Attached SCSI removable disk
[ 1753.658942] sd 6:0:0:0: [sdb] 62333952 512-byte logical blocks: (31.9 GB/29.7 GiB)
[ 1753.659708] sd 6:0:0:0: [sdb] Write Protect is off
[ 1753.659711] sd 6:0:0:0: [sdb] Mode Sense: 23 00 00 00
[ 1753.660468] sd 6:0:0:0: [sdb] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[ 1753.664577]  sdb:
[ 1753.667208] sd 6:0:0:0: [sdb] Attached SCSI removable disk

La sortie de l lspci commandement :

00:00.0 Host bridge: Intel Corporation Crystal Well DRAM Controller (rev 08)
00:02.0 VGA compatible controller: Intel Corporation Device 0d22 (rev 08)
00:03.0 Audio device: Intel Corporation Crystal Well HD Audio Controller (rev 08)
00:14.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB xHCI (rev 05)
00:16.0 Communication controller: Intel Corporation 8 Series/C220 Series Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #2 (rev 05)
00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller (rev 05)
00:1c.0 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #1 (rev d5)
00:1c.2 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #3 (rev d5)
00:1c.3 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #4 (rev d5)
00:1d.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #1 (rev 05)
00:1f.0 ISA bridge: Intel Corporation HM87 Express LPC Controller (rev 05)
00:1f.2 SATA controller: Intel Corporation 8 Series/C220 Series Chipset Family 6-port SATA Controller 1 [AHCI mode] (rev 05)
00:1f.3 SMBus: Intel Corporation 8 Series/C220 Series Chipset Family SMBus Controller (rev 05)
02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8821AE 802.11ac PCIe Wireless Network Adapter
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 0c)

J'ai aussi vérifié le noyau .config (J'utilise 4.4.0-78-generic) et je vois ce qui suit :

CONFIG_MMC_BLOCK=m
CONFIG_MMC_BLOCK_MINORS=8
CONFIG_MMC_BLOCK_BOUNCE=y
CONFIG_SDIO_UART=m
CONFIG_MMC_SDHCI=m

Ce qui est étrange, c'est que le lecteur de carte est considéré comme /dev/sdb . Par exemple, la sortie de l udisksctl status commandement :

TS-RDF5 SD  Transcend     TS37      000000000039         sdb

fdisk -lu sortie :

Disk /dev/sdb: 29.7 GiB, 31914983424 bytes, 62333952 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x197087fd

Il est étrange que le type de Disklabel soit "dos" ?

J'ai également modprobe'd les modules suivants :

modprobe mmc_core
modprobe mmc_block
modprobe sdhci

J'ai débranché la carte et je l'ai rebranchée et je vois ce qui suit dans dmesg :

[ 6442.411915] usb 4-6: new SuperSpeed USB device number 2 using xhci_hcd
[ 6442.430868] usb 4-6: New USB device found, idVendor=8564, idProduct=4000
[ 6442.430870] usb 4-6: New USB device strings: Mfr=3, Product=4, SerialNumber=5
[ 6442.430872] usb 4-6: Product: Transcend
[ 6442.430873] usb 4-6: Manufacturer: TS-RDF5 
[ 6442.430874] usb 4-6: SerialNumber: 000000000039
[ 6442.433246] usb-storage 4-6:1.0: USB Mass Storage device detected
[ 6442.433355] scsi host7: usb-storage 4-6:1.0
[ 6442.611492] usb 4-6: USB disconnect, device number 2
[ 6442.851860] usb 4-6: new SuperSpeed USB device number 3 using xhci_hcd
[ 6442.870833] usb 4-6: New USB device found, idVendor=8564, idProduct=4000
[ 6442.870835] usb 4-6: New USB device strings: Mfr=3, Product=4, SerialNumber=5
[ 6442.870837] usb 4-6: Product: Transcend
[ 6442.870838] usb 4-6: Manufacturer: TS-RDF5 
[ 6442.870839] usb 4-6: SerialNumber: 000000000039

Quelqu'un sait-il pourquoi cela ne fonctionne pas ?