Mac Book Pro 12,1
Still not working in 
16.10, kernel 4.8.9-59, and
17.10, kernel 4.12.0-12

The SD card is working in Mac OS (El Capitan).
Mac OS says the device is 05ac:8406
Linux does not detect it at all.
Not on boot, nor on plug out/plug in.

--------
uname -a
Linux vizmac 4.8.0-59-generic #64-Ubuntu SMP Thu Jun 29 19:38:34 UTC 2017 
x86_64 x86_64 x86_64 GNU/Linux
(booted from internal SSD)

lsusb
Bus 002 Device 002: ID 0781:5583 SanDisk Corp. 
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 05ac:0273 Apple, Inc. 
Bus 001 Device 002: ID 05ac:8290 Apple, Inc. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
~
dmesg | grep -i xhci
[    0.000000] ACPI: SSDT 0x000000008AD6A000 000A64 (v02 APPLE  Xhci     
00001000 INTL 20140424)
[    1.141735] xhci_hcd 0000:00:14.0: xHCI Host Controller
[    1.141754] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus 
number 1
[    1.142833] xhci_hcd 0000:00:14.0: hcc params 0x200077c1 hci version 0x100 
quirks 0x0004b810
[    1.142860] xhci_hcd 0000:00:14.0: cache line size of 256 is not supported
[    1.142959] usb usb1: Product: xHCI Host Controller
[    1.142973] usb usb1: Manufacturer: Linux 4.8.0-59-generic xhci-hcd
[    1.143344] xhci_hcd 0000:00:14.0: xHCI Host Controller
[    1.143361] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus 
number 2
[    1.143439] usb usb2: Product: xHCI Host Controller
[    1.143453] usb usb2: Manufacturer: Linux 4.8.0-59-generic xhci-hcd
[    1.882127] usb 1-3: new full-speed USB device number 2 using xhci_hcd
[    2.142182] usb 2-2: new SuperSpeed USB device number 2 using xhci_hcd
[    2.282135] usb 1-5: new full-speed USB device number 3 using xhci_hcd
~


--------
uname -a
Linux viz-MacBookPro 4.12.0-12-generic #13-Ubuntu SMP Thu Aug 17 16:13:25 UTC 
2017 x86_64 x86_64 x86_64 GNU/Linux
(Booted from USB 2-2 SanDisk flash stick)

lsusb
Bus 002 Device 002: ID 0781:5583 SanDisk Corp. 
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 05ac:0273 Apple, Inc. 
Bus 001 Device 002: ID 05ac:8290 Apple, Inc. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
~
dmesg | grep -i xhci
[    0.000000] ACPI: SSDT 0x000000008AD6A000 000A64 (v02 APPLE  Xhci     
00001000 INTL 20140424)
[    0.991473] xhci_hcd 0000:00:14.0: xHCI Host Controller
[    0.991491] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus 
number 1
[    0.992568] xhci_hcd 0000:00:14.0: hcc params 0x200077c1 hci version 0x100 
quirks 0x0004b810
[    0.992593] xhci_hcd 0000:00:14.0: cache line size of 256 is not supported
[    0.992689] usb usb1: Product: xHCI Host Controller
[    0.992702] usb usb1: Manufacturer: Linux 4.12.0-12-generic xhci-hcd
[    0.993042] xhci_hcd 0000:00:14.0: xHCI Host Controller
[    0.993058] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus 
number 2
[    0.993132] usb usb2: Product: xHCI Host Controller
[    0.993145] usb usb2: Manufacturer: Linux 4.12.0-12-generic xhci-hcd
[    1.322891] usb 1-3: new full-speed USB device number 2 using xhci_hcd
[    1.583064] usb 2-2: new SuperSpeed USB device number 2 using xhci_hcd
[    1.722951] usb 1-5: new full-speed USB device number 3 using xhci_hcd
~

The card is working through USB adapter:

sudo fdisk -l
...
Disk /dev/sdc: 241,9 GiB, 259710255104 bytes, 507246592 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: gpt
Disk identifier: 5F3710AB-8B17-4E96-B3CF-BF3B75CB8E89

Device     Start       End   Sectors   Size Type
/dev/sdc1   2048 507244543 507242496 241,9G Linux filesystem
~

The card is Transcend JetDrive 256 GB
https://transcend-info.com/apple/jetdrivelite/

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https://bugs.launchpad.net/bugs/1620422

Title:
   Macbook Pro Retina 12,1 SD Card Reader Doesn't Work

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