Arch Linux

xfzfflm

Member

Registered: 2017-01-13

Posts: 7

Cannot recognize X1 Carbon's RTS525A SD card reader

I'm using X1 Carbon gen4 and the SD card reader is well functioning under a dua boot Windows, but doesn't show with `lsblk`.

lspci shows

02:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS525A PCI Express Card Reader (rev 01)

hwinfo shows

16: PCI 200.0: ff00 Unclassified device
  [Created at pci.386]
  Unique ID: B35A.+EvpWnmGIQ5
  Parent ID: z8Q3.zBMmOGQuLCF
  SysFS ID: /devices/pci0000:00/0000:00:1c.0/0000:02:00.0
  SysFS BusID: 0000:02:00.0
  Hardware Class: unknown
  Model: "Realtek RTS525A PCI Express Card Reader"
  Vendor: pci 0x10ec "Realtek Semiconductor Co., Ltd."
  Device: pci 0x525a "RTS525A PCI Express Card Reader"
  SubVendor: pci 0x17aa "Lenovo"
  SubDevice: pci 0x2238 
  Revision: 0x01
  Driver: "rtsx_pci"
  Driver Modules: "rtsx_pci"
  Memory Range: 0xf1200000-0xf1200fff (rw,non-prefetchable)
  IRQ: 125 (104 events)
  Module Alias: "pci:v000010ECd0000525Asv000017AAsd00002238bcFFsc00i00"
  Driver Info #0:
    Driver Status: rtsx_pci is active
    Driver Activation Cmd: "modprobe rtsx_pci"
  Config Status: cfg=new, avail=yes, need=no, active=unknown
  Attached to: #13 (PCI bridge)

There's message with `dmesg`

[    2.394250] mmc0: error -110 whilst initialising SD card

There are some discussion on the internet about similiar issue, and it seems that it's a missing driver in kernel.
e.g.
https://forum.manjaro.org/t/laptop-not- … ader/54800

However, both current kernel 5.0.9 and lts 4.19.37 fail to recognize the SD card.

In Wiki it claims X1C gen4's micro SD card reader is supported. But there's no further information.
https://wiki.archlinux.org/index.php/Le … on_(Gen_4)

Any idea what else I can try?

xfzfflm

Member

Registered: 2017-01-13

Posts: 7

Re: Cannot recognize X1 Carbon's RTS525A SD card reader

Tested with another SD card with smaller volume and it works...
It seems that 400G SD card is not supported.