Bonjour, merci pour ces informations.
Normalement, je branche ma carte directement à l'ordinateur (Macbook Pro /Ubuntu).
J'ai suivi vos instructions, et voici ce que cela a donné.
maiakovski@Utopia:~$ lsb_release -d ; printenv GDMSESSION ; uname -mr
Description: Ubuntu 16.04.4 LTS
ubuntu
4.13.0-37-generic x86_64
maiakovski@Utopia:~$ dmesg | tail -1
[ 7541.853065] mmc0: card aaaa removed
maiakovski@Utopia:~$ dmesg | grep -Evi "80211|dhcp|ipv6|network|ufw|wlan" | tail -25
[ 7591.721634] mmc0: sdhci: Cmd: 0x0000123a | Max curr: 0x00000000
[ 7591.721643] mmc0: sdhci: Resp[0]: 0x00000900 | Resp[1]: 0x00000900
[ 7591.721651] mmc0: sdhci: Resp[2]: 0x00000900 | Resp[3]: 0x00000900
[ 7591.721658] mmc0: sdhci: Host ctl2: 0x0000804b
[ 7591.721668] mmc0: sdhci: ADMA Err: 0x00000001 | ADMA Ptr: 0x000000025b841204
[ 7591.721672] mmc0: sdhci: ============================================
[ 7591.721784] mmc0: Unexpected interrupt 0x04000000.
[ 7591.721790] mmc0: sdhci: ============ SDHCI REGISTER DUMP ===========
[ 7591.721798] mmc0: sdhci: Sys addr: 0x00000000 | Version: 0x00001502
[ 7591.721806] mmc0: sdhci: Blk size: 0x00007200 | Blk cnt: 0x00000000
[ 7591.721814] mmc0: sdhci: Argument: 0x00000000 | Trn mode: 0x00000033
[ 7591.721827] mmc0: sdhci: Present: 0x1fff0001 | Host ctl: 0x0000001f
[ 7591.721840] mmc0: sdhci: Power: 0x0000000f | Blk gap: 0x00000000
[ 7591.721861] mmc0: sdhci: Wake-up: 0x00000000 | Clock: 0x00000007
[ 7591.721874] mmc0: sdhci: Timeout: 0x0000000a | Int stat: 0x00000000
[ 7591.721887] mmc0: sdhci: Int enab: 0x02ff008b | Sig enab: 0x02ff008b
[ 7591.721901] mmc0: sdhci: AC12 err: 0x00000000 | Slot int: 0x00000000
[ 7591.721916] mmc0: sdhci: Caps: 0x176ec8b0 | Caps_1: 0x03002177
[ 7591.721926] mmc0: sdhci: Cmd: 0x00000c1a | Max curr: 0x00000000
[ 7591.721934] mmc0: sdhci: Resp[0]: 0x00000900 | Resp[1]: 0x00000900
[ 7591.721944] mmc0: sdhci: Resp[2]: 0x00000900 | Resp[3]: 0x00000900
[ 7591.721950] mmc0: sdhci: Host ctl2: 0x0000800b
[ 7591.721960] mmc0: sdhci: ADMA Err: 0x00000001 | ADMA Ptr: 0x000000025b841204
[ 7591.721964] mmc0: sdhci: ============================================
[ 7591.722116] mmcblk0: error -110 sending stop command, original cmd response 0x0, card status 0x400900
maiakovski@Utopia:~$ lsusb ; echo ; lsusb -t
Bus 002 Device 003: ID 05ac:8242 Apple, Inc. Built-in IR Receiver
Bus 002 Device 002: ID 0424:2513 Standard Microsystems Corp. 2.0 Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 003: ID 05ac:8509 Apple, Inc. FaceTime HD Camera
Bus 001 Device 005: ID 05ac:0253 Apple, Inc. Internal Keyboard/Trackpad (ISO)
Bus 001 Device 008: ID 05ac:821a Apple, Inc. Bluetooth Host Controller
Bus 001 Device 004: ID 0a5c:4500 Broadcom Corp. BCM2046B1 USB 2.0 Hub (part of BCM2046 Bluetooth)
Bus 001 Device 002: ID 0424:2513 Standard Microsystems Corp. 2.0 Hub
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 04.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
/: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/8p, 480M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/2p, 480M
|__ Port 1: Dev 3, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/6p, 480M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/3p, 480M
|__ Port 1: Dev 4, If 0, Class=Hub, Driver=hub/3p, 12M
|__ Port 3: Dev 8, If 0, Class=Vendor Specific Class, Driver=btusb, 12M
|__ Port 3: Dev 8, If 1, Class=Wireless, Driver=btusb, 12M
|__ Port 3: Dev 8, If 2, Class=Vendor Specific Class, Driver=btusb, 12M
|__ Port 3: Dev 8, If 3, Class=Application Specific Interface, Driver=, 12M
|__ Port 2: Dev 5, If 0, Class=Human Interface Device, Driver=usbhid, 12M
|__ Port 2: Dev 5, If 1, Class=Human Interface Device, Driver=usbhid, 12M
|__ Port 2: Dev 5, If 2, Class=Human Interface Device, Driver=bcm5974, 12M
|__ Port 2: Dev 3, If 0, Class=Video, Driver=uvcvideo, 480M
|__ Port 2: Dev 3, If 1, Class=Video, Driver=uvcvideo, 480M
|__ Port 2: Dev 3, If 2, Class=Vendor Specific Class, Driver=, 480M
En espérant que cela vous éclaire !
Merci