I have a strange problem on my laptop (Gigabyte Aero 15 Classic XA) running Ubuntu 21.10 (was the same on 20.04).
When I plug in a USB 3 stick I get only USB 2 speeds. But when the same stick was inserted prior to boot, I get USB 3 speed.
lsusb -t confirms:
Stick connected after boot:
/: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 10000M
/: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 480M
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/8p, 10000M
|__ Port 5: Dev 5, If 0, Class=Mass Storage, Driver=usb-storage, 5000M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/16p, 480M
|__ Port 3: Dev 14, If 0, Class=Mass Storage, Driver=usb-storage, 480M <- the stick
|__ Port 9: Dev 9, If 0, Class=Video, Driver=uvcvideo, 480M
|__ Port 9: Dev 9, If 1, Class=Video, Driver=uvcvideo, 480M
|__ Port 11: Dev 10, If 2, Class=Human Interface Device, Driver=usbhid, 12M
|__ Port 11: Dev 10, If 0, Class=Human Interface Device, Driver=usbhid, 12M
|__ Port 11: Dev 10, If 3, Class=Human Interface Device, Driver=usbhid, 12M
|__ Port 11: Dev 10, If 1, Class=Human Interface Device, Driver=usbhid, 12M
|__ Port 14: Dev 4, If 0, Class=Wireless, Driver=btusb, 12M
|__ Port 14: Dev 4, If 1, Class=Wireless, Driver=btusb, 12M
And prior to boot:
/: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 10000M
/: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 480M
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/8p, 10000M
|__ Port 3: Dev 2, If 0, Class=Mass Storage, Driver=usb-storage, 5000M
|__ Port 5: Dev 3, If 0, Class=Mass Storage, Driver=usb-storage, 5000M <- the stick
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/16p, 480M
|__ Port 9: Dev 2, If 0, Class=Video, Driver=uvcvideo, 480M
|__ Port 9: Dev 2, If 1, Class=Video, Driver=uvcvideo, 480M
|__ Port 11: Dev 3, If 2, Class=Human Interface Device, Driver=usbhid, 12M
|__ Port 11: Dev 3, If 0, Class=Human Interface Device, Driver=usbhid, 12M
|__ Port 11: Dev 3, If 3, Class=Human Interface Device, Driver=usbhid, 12M
|__ Port 11: Dev 3, If 1, Class=Human Interface Device, Driver=usbhid, 12M
|__ Port 14: Dev 4, If 0, Class=Wireless, Driver=btusb, 12M
|__ Port 14: Dev 4, If 1, Class=Wireless, Driver=btusb, 12M
Any USB stick is affected. So what is causing this? How can the same stick on the same physical USB port be on different busses, depending on when it was inserted?
System Information
PROCESSOR: Intel Core i7-9750H @ 4.50GHz
Core Count: 6
Thread Count: 12
Extensions: SSE 4.2 + AVX2 + AVX + RDRAND + FSGSBASE
Cache Size: 12288 MB
Microcode: 0xea
Core Family: Kaby/Coffee/Whiskey Lake
Scaling Driver: intel_pstate powersave (EPP: balance_performance)
GRAPHICS: Gigabyte Intel UHD 630 CFL GT2 8GB
BAR1 / Visible vRAM: 256 MiB
OpenGL: 4.6 Mesa 21.2.6
Display Driver: NVIDIA
Monitor: LQ156M1JW03
Screen: 1920x1080
MOTHERBOARD: GIGABYTE AERO 15 Classic-XA
BIOS Version: B04
Chipset: Intel Cannon Lake PCH
Audio: Realtek ALC255
Network: Qualcomm Atheros Killer E2500 + Intel Cannon Lake PCH CNVi WiFi
Greetings,
Simon
