usb-c ports (4) are limited to 480 Mb/s. Should be 10 Gb/s
any device selecting a higher speed is ignored, no output to **dmesg --human --follow**
(bus usb4…6)
hardware is Intel Corporation JHL7540 Thunderbolt 3 USB Controller [Titan Ridge 4C 2018] [8086:15ec] (rev 06)
usb-a ports (2) work at 5 Gb/s
(bus usb1…2)
Hardware is Mac mini (2018) Macmini8,1
Linux is linux-generic-hwe-20.04
uname --release
5.8.0-36-generic
usb bus speeds:
for A in /sys/bus/usb/devices/usb*; do echo "$(basename $A): $(< $A/speed)"; done
usb1: 480
usb2: 10000
usb3: 480
usb4: 10000
usb5: 480
usb6: 10000
usb-c ports (4) are limited to 480 Mb/s. Should be 10 Gb/s
any device selecting a higher speed is ignored, no output to **dmesg --human --follow**
(bus usb4…6)
hardware is Intel Corporation JHL7540 Thunderbolt 3 USB Controller [Titan Ridge 4C 2018] [8086:15ec] (rev 06)
usb-a ports (2) work at 5 Gb/s
(bus usb1…2)
Hardware is Mac mini (2018) Macmini8,1 hwe-20. 04
Linux is linux-generic-
uname --release
5.8.0-36-generic
usb bus speeds: usb/devices/ usb*; do echo "$(basename $A): $(< $A/speed)"; done
for A in /sys/bus/
usb1: 480
usb2: 10000
usb3: 480
usb4: 10000
usb5: 480
usb6: 10000
usb controllers: pci0000: 00/0000: 00:01.2/ 0000:7b: 00.0/0000: 7c:02.0/ 0000:7e: 00.0/usb5 pci0000: 00/0000: 00:01.2/ 0000:7b: 00.0/0000: 7c:02.0/ 0000:7e: 00.0/usb6 pci0000: 00/0000: 00:01.1/ 0000:05: 00.0/0000: 06:02.0/ 0000:08: 00.0/usb3 pci0000: 00/0000: 00:01.1/ 0000:05: 00.0/0000: 06:02.0/ 0000:08: 00.0/usb4 pci0000: 00/0000: 00:14.0/ usb1 pci0000: 00/0000: 00:14.0/ usb2
find /sys/devices -regextype egrep -regex '.*/usb[0-9]+'
/sys/devices/
/sys/devices/
/sys/devices/
/sys/devices/
/sys/devices/
/sys/devices/
usb controller modules and drivers:
lspci -knns14
00:14.0 USB controller [0c03]: Intel Corporation Cannon Lake PCH USB 3.1 xHCI Host Controller [8086:a36d] (rev 10)
Subsystem: Intel Corporation Cannon Lake PCH USB 3.1 xHCI Host Controller [8086:7270]
Kernel driver in use: xhci_hcd
Kernel modules: xhci_pci
lspci -knns7e:0
7e:00.0 USB controller [0c03]: Intel Corporation JHL7540 Thunderbolt 3 USB Controller [Titan Ridge 4C 2018] [8086:15ec] (rev 06)
Subsystem: Intel Corporation JHL7540 Thunderbolt 3 USB Controller [Titan Ridge 4C 2018] [8086:0000]
Kernel driver in use: xhci_hcd
Kernel modules: xhci_pci
lspci -knns8:0
08:00.0 USB controller [0c03]: Intel Corporation JHL7540 Thunderbolt 3 USB Controller [Titan Ridge 4C 2018] [8086:15ec] (rev 06)
Subsystem: Intel Corporation JHL7540 Thunderbolt 3 USB Controller [Titan Ridge 4C 2018] [8086:0000]
Kernel driver in use: xhci_hcd
Kernel modules: xhci_pci
**lsb_release -rd**
Description: Ubuntu 20.04.2 LTS
Release: 20.04