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#1 2026-01-25 09:46:00

figferrofino
Member
Registered: 2026-01-25
Posts: 3

[SOLVED] USB4 and USB3 ports seen as USB2 using 6.18.6

I just switched to a new motherboard, reinstalled Arch, updated everything, and I'm seeing something quite strange. Almost every USB3 port, and both USB4 ports, are being seen as USB2. Specifically, they're showing as the generic "Linux Foundation 2.0 root hub". This is causing the devices connected to run at 2.0 speeds, so my USB hubs are all half-working right now. XHCI handoff is enabled in the UEFI. Motherboard is the Asus TUF GAMING X870-PLUS WIFI.

The main USB4 port I'm plugged into is on Bus 003, where I had all of my USB 3 equipment plugged in, just like my old motherboard (granted that old USB C port was only 10gig, not 40gig, presumably that's why it was working before). Bus 001 has my normal USB 3 hub, plugged into a USB 3 port, so it's even weirder to me that it's being detected as 2.0.

lsusb output:

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 0424:2734 Microchip Technology, Inc. (formerly SMSC) USB2734
Bus 001 Device 003: ID 174c:2074 ASMedia Technology Inc. ASM1074 High-Speed hub
Bus 001 Device 004: ID 0b05:19af ASUSTek Computer, Inc. AURA LED Controller
Bus 001 Device 005: ID 1532:0090 Razer USA, Ltd Razer Naga Pro
Bus 001 Device 008: ID 14ed:1012 Shure Inc. Shure MV7
Bus 001 Device 011: ID 187c:1014 Alienware Corporation Hub Controller
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 002: ID 0424:5734 Microchip Technology, Inc. (formerly SMSC) USB5734
Bus 002 Device 003: ID 174c:3074 ASMedia Technology Inc. ASM1074 SuperSpeed hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 002: ID 2109:2813 VIA Labs, Inc. VL813 Hub
Bus 003 Device 003: ID 2109:2813 VIA Labs, Inc. VL813 Hub
Bus 003 Device 004: ID 17e9:6000 DisplayLink USB Ultra HD Graphic Dock
Bus 003 Device 005: ID 0bda:5411 Realtek Semiconductor Corp. RTS5411 Hub
Bus 003 Device 007: ID 1532:0067 Razer USA, Ltd Naga Trinity
Bus 003 Device 009: ID 0951:1718 Kingston Technology HyperX Cloud II Wireless
Bus 003 Device 011: ID 05ac:024f Apple, Inc. Aluminium Keyboard (ANSI)
Bus 003 Device 012: ID 0bda:5411 Realtek Semiconductor Corp. RTS5411 Hub
Bus 003 Device 013: ID 2537:1081 Norelsys NS1081
Bus 003 Device 014: ID 0fd9:006d Elgato Systems GmbH Stream Deck original V2
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 007 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 008 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 009 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

lspci output:

00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge Root Complex
        Subsystem: ASUSTeK Computer Inc. Device 8877
00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge IOMMU
        Subsystem: ASUSTeK Computer Inc. Device 8877
00:01.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge Dummy Host Bridge
00:01.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge GPP Bridge
        Subsystem: ASUSTeK Computer Inc. Device 8877
        Kernel driver in use: pcieport
        Kernel modules: shpchp
00:01.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge GPP Bridge
        Subsystem: ASUSTeK Computer Inc. Device 8877
        Kernel driver in use: pcieport
        Kernel modules: shpchp
00:01.3 PCI bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge GPP Bridge
        Subsystem: ASUSTeK Computer Inc. Device 8877
        Kernel driver in use: pcieport
        Kernel modules: shpchp
00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge Dummy Host Bridge
00:02.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge GPP Bridge
        Subsystem: ASUSTeK Computer Inc. Device 8877
        Kernel driver in use: pcieport
        Kernel modules: shpchp
00:02.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge GPP Bridge
        Subsystem: ASUSTeK Computer Inc. Device 8877
        Kernel driver in use: pcieport
        Kernel modules: shpchp
00:03.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge Dummy Host Bridge
00:04.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge Dummy Host Bridge
00:08.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge Dummy Host Bridge
00:08.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge Internal GPP Bridge to Bus [C:A]
        Subsystem: ASUSTeK Computer Inc. Device 8877
        Kernel driver in use: pcieport
        Kernel modules: shpchp
00:08.3 PCI bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge Internal GPP Bridge to Bus [C:A]
        Subsystem: ASUSTeK Computer Inc. Device 8877
        Kernel driver in use: pcieport
        Kernel modules: shpchp
00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 71)
        Subsystem: ASUSTeK Computer Inc. Device 8877
        Kernel driver in use: piix4_smbus
        Kernel modules: i2c_piix4, sp5100_tco
00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 51)
        Subsystem: ASUSTeK Computer Inc. Device 8877
00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge Data Fabric; Function 0
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge Data Fabric; Function 1
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge Data Fabric; Function 2
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge Data Fabric; Function 3
        Kernel driver in use: k10temp
        Kernel modules: k10temp
00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge Data Fabric; Function 4
00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge Data Fabric; Function 5
00:18.6 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge Data Fabric; Function 6
00:18.7 Host bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge Data Fabric; Function 7
01:00.0 VGA compatible controller: NVIDIA Corporation AD103 [GeForce RTX 4080 SUPER] (rev a1)
        Subsystem: Gigabyte Technology Co., Ltd Device 4135
        Kernel driver in use: nvidia
        Kernel modules: nouveau, nvidia_drm, nvidia
01:00.1 Audio device: NVIDIA Corporation AD103 High Definition Audio Controller (rev a1)
        Subsystem: Gigabyte Technology Co., Ltd Device 4135
        Kernel driver in use: snd_hda_intel
        Kernel modules: snd_hda_intel
02:00.0 Non-Volatile memory controller: Realtek Semiconductor Co., Ltd. RTS5762 NVMe SSD Controller (rev 01)
        Subsystem: Realtek Semiconductor Co., Ltd. RTS5762 NVMe SSD Controller
        Kernel driver in use: nvme
        Kernel modules: nvme
03:00.0 Non-Volatile memory controller: Phison Electronics Corporation PS5013-E13 PCIe3 NVMe Controller (DRAM-less) (rev 01)
        Subsystem: Phison Electronics Corporation PS5013-E13 PCIe3 NVMe Controller (DRAM-less)
        Kernel driver in use: nvme
        Kernel modules: nvme
04:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset PCIe Switch Upstream Port (rev 01)
        Subsystem: ASMedia Technology Inc. Device 3328
        Kernel driver in use: pcieport
        Kernel modules: shpchp
05:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset PCIe Switch Downstream Port (rev 01)
        Subsystem: ASMedia Technology Inc. Device 3328
        Kernel driver in use: pcieport
        Kernel modules: shpchp
05:06.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset PCIe Switch Downstream Port (rev 01)
        Subsystem: ASMedia Technology Inc. Device 3328
        Kernel driver in use: pcieport
        Kernel modules: shpchp
05:07.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset PCIe Switch Downstream Port (rev 01)
        Subsystem: ASMedia Technology Inc. Device 3328
        Kernel driver in use: pcieport
        Kernel modules: shpchp
05:08.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset PCIe Switch Downstream Port (rev 01)
        Subsystem: ASMedia Technology Inc. Device 3328
        Kernel driver in use: pcieport
        Kernel modules: shpchp
05:0c.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset PCIe Switch Downstream Port (rev 01)
        Subsystem: ASMedia Technology Inc. Device 3328
        Kernel driver in use: pcieport
        Kernel modules: shpchp
05:0d.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset PCIe Switch Downstream Port (rev 01)
        Subsystem: ASMedia Technology Inc. Device 3328
        Kernel driver in use: pcieport
        Kernel modules: shpchp
06:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe SSD Controller S4LV008[Pascal]
        Subsystem: Samsung Electronics Co Ltd SSD 990 PRO
        Kernel driver in use: nvme
        Kernel modules: nvme
07:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8125 2.5GbE Controller (rev 0c)
        DeviceName: Realtek RTL8125D LAN
        Subsystem: ASUSTeK Computer Inc. Device 88e1
        Kernel driver in use: r8169
        Kernel modules: r8169
08:00.0 Network controller: MEDIATEK Corp. MT7925 802.11be 160MHz 2x2 PCIe Wireless Network Adapter [Filogic 360]
        Subsystem: AzureWave Device 6000
        Kernel driver in use: mt7925e
        Kernel modules: mt7925e
09:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe SSD Controller PM9A1/PM9A3/980PRO
        Subsystem: Samsung Electronics Co Ltd SSD 980 PRO
        Kernel driver in use: nvme
        Kernel modules: nvme
0a:00.0 USB controller: Advanced Micro Devices, Inc. [AMD] 800 Series Chipset USB 3.x XHCI Controller (rev 01)
        Subsystem: ASMedia Technology Inc. Device 1142
        Kernel driver in use: xhci_hcd
        Kernel modules: xhci_pci
0b:00.0 SATA controller: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset SATA Controller (rev 01)
        Subsystem: ASMedia Technology Inc. Device 1062
        Kernel driver in use: ahci
        Kernel modules: ahci
0c:00.0 PCI bridge: ASMedia Technology Inc. ASM4242 PCIe Switch Upstream Port (rev 01)
        Subsystem: ASMedia Technology Inc. ASM4242 PCIe Switch Upstream Port
        Kernel driver in use: pcieport
        Kernel modules: shpchp
0d:00.0 PCI bridge: ASMedia Technology Inc. ASM4242 PCIe Switch Downstream Port (rev 01)
        Subsystem: ASMedia Technology Inc. Device 2421
        Kernel driver in use: pcieport
        Kernel modules: shpchp
0d:01.0 PCI bridge: ASMedia Technology Inc. ASM4242 PCIe Switch Downstream Port (rev 01)
        Subsystem: ASMedia Technology Inc. Device 2421
        Kernel driver in use: pcieport
        Kernel modules: shpchp
0d:02.0 PCI bridge: ASMedia Technology Inc. ASM4242 PCIe Switch Downstream Port (rev 01)
        Subsystem: ASMedia Technology Inc. Device 2421
        Kernel driver in use: pcieport
        Kernel modules: shpchp
0d:03.0 PCI bridge: ASMedia Technology Inc. ASM4242 PCIe Switch Downstream Port (rev 01)
        Subsystem: ASMedia Technology Inc. Device 2421
        Kernel driver in use: pcieport
        Kernel modules: shpchp
72:00.0 USB controller: ASMedia Technology Inc. ASM4242 USB 3.2 xHCI Controller (rev 01)
        Subsystem: ASMedia Technology Inc. Device 2421
        Kernel driver in use: xhci_hcd
        Kernel modules: xhci_pci
73:00.0 USB controller: ASMedia Technology Inc. ASM4242 USB 4 / Thunderbolt 3 Host Router (rev 01)
        Subsystem: ASMedia Technology Inc. Device 2421
        Kernel driver in use: thunderbolt
        Kernel modules: thunderbolt
74:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Raphael (rev cb)
        Subsystem: ASUSTeK Computer Inc. Device 8877
        Kernel modules: amdgpu
74:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Radeon High Definition Audio Controller
        Subsystem: ASUSTeK Computer Inc. Device 8877
        Kernel driver in use: snd_hda_intel
        Kernel modules: snd_hda_intel
74:00.2 Encryption controller: Advanced Micro Devices, Inc. [AMD] Family 19h PSP/CCP
        Subsystem: ASUSTeK Computer Inc. Device 8877
        Kernel driver in use: ccp
        Kernel modules: ccp
74:00.3 USB controller: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge USB 3.1 xHCI
        Subsystem: ASUSTeK Computer Inc. Device 8877
        Kernel driver in use: xhci_hcd
        Kernel modules: xhci_pci
74:00.4 USB controller: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge USB 3.1 xHCI
        Subsystem: ASUSTeK Computer Inc. Device 8877
        Kernel driver in use: xhci_hcd
        Kernel modules: xhci_pci
74:00.6 Audio device: Advanced Micro Devices, Inc. [AMD] Ryzen HD Audio Controller
        DeviceName: Realtek ALC1220P Audio
        Subsystem: ASUSTeK Computer Inc. Device 886d
        Kernel driver in use: snd_hda_intel
        Kernel modules: snd_hda_intel
75:00.0 USB controller: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge USB 2.0 xHCI
        Subsystem: ASUSTeK Computer Inc. Device 8877
        Kernel driver in use: xhci_hcd
        Kernel modules: xhci_pci

Any help would be greatly appreciated! If there's any more info I can give, I'll supply it ASAP! Thank you!

Last edited by figferrofino (2026-01-26 18:44:47)

Offline

#2 2026-01-25 11:16:12

dimich
Member
From: Kharkiv, Ukraine
Registered: 2009-11-03
Posts: 486

Re: [SOLVED] USB4 and USB3 ports seen as USB2 using 6.18.6

figferrofino wrote:

Almost every USB3 port, and both USB4 ports, are being seen as USB2. Specifically, they're showing as the generic "Linux Foundation 2.0 root hub".

Each USB3 hub is represented as two logical hubs: 2.0 and 3.0 with separate buses, that's ok.

figferrofino wrote:

This is causing the devices connected to run at 2.0 speeds

How did you measure their speeds?

figferrofino wrote:

If there's any more info I can give, I'll supply it ASAP!

$ lsusb --tree --verbose

Last edited by dimich (2026-01-25 13:54:46)

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#3 2026-01-25 17:22:26

figferrofino
Member
Registered: 2026-01-25
Posts: 3

Re: [SOLVED] USB4 and USB3 ports seen as USB2 using 6.18.6

dimich wrote:

Each USB3 hub is represented as two logical hubs: 2.0 and 3.0 with separate buses, that's ok.

This is good to know, thank you for the info! I wasn't aware that's how they functioned, but it makes sense.

dimich wrote:

How did you measure their speeds?

I'm plugging a USB 3.0 drive and copying an ISO from it onto my desktop. My front panel USB 3 port is the only one at full speeds; it reads the ISO at 150MiBs, and when I plug into any of my rear IO or USB 3 docks, it reads the ISO at 36MiBs. This wasn't the case on my Win11 install before I wiped it for Arch; it was always transferring at USB 3 speeds, no matter which hub I plugged into. Also, I can see in Plasma KDE's Info Center -> USB Devices. When I click on my USB 3 devices when they're plugged into the front port, it says Speed - 5,000 Mbit/s, but it goes down to 480Mbit/s when I move it to the other ports. You can also see in the trees that the primary ports everything goes into shows USB 2 speeds. It looks exactly like the lsusb --tree --verbose printout you asked for, just in a graphical format, which has been super useful!

dimich wrote:
$ lsusb --tree --verbose
/:  Bus 001.Port 001: Dev 001, Class=root_hub, Driver=xhci_hcd/12p, 480M
    ID 1d6b:0002 Linux Foundation 2.0 root hub
    |__ Port 002: Dev 002, If 0, Class=Hub, Driver=hub/5p, 480M
        ID 0424:2734 Microchip Technology, Inc. (formerly SMSC) 
        |__ Port 001: Dev 005, If 0, Class=Human Interface Device, Driver=usbhid, 12M
            ID 1532:0090 Razer USA, Ltd 
        |__ Port 001: Dev 005, If 1, Class=Human Interface Device, Driver=usbhid, 12M
            ID 1532:0090 Razer USA, Ltd 
        |__ Port 001: Dev 005, If 2, Class=Human Interface Device, Driver=usbhid, 12M
            ID 1532:0090 Razer USA, Ltd 
        |__ Port 001: Dev 005, If 3, Class=Human Interface Device, Driver=usbhid, 12M
            ID 1532:0090 Razer USA, Ltd 
        |__ Port 001: Dev 005, If 4, Class=Human Interface Device, Driver=usbhid, 12M
            ID 1532:0090 Razer USA, Ltd 
        |__ Port 002: Dev 008, If 0, Class=Audio, Driver=snd-usb-audio, 12M
            ID 14ed:1012 Shure Inc. 
        |__ Port 002: Dev 008, If 1, Class=Audio, Driver=snd-usb-audio, 12M
            ID 14ed:1012 Shure Inc. 
        |__ Port 002: Dev 008, If 2, Class=Audio, Driver=snd-usb-audio, 12M
            ID 14ed:1012 Shure Inc. 
        |__ Port 002: Dev 008, If 3, Class=Human Interface Device, Driver=usbhid, 12M
            ID 14ed:1012 Shure Inc. 
        |__ Port 002: Dev 008, If 4, Class=Human Interface Device, Driver=usbhid, 12M
            ID 14ed:1012 Shure Inc. 
        |__ Port 005: Dev 011, If 0, Class=Human Interface Device, Driver=usbhid, 480M
            ID 187c:1014 Alienware Corporation 
    |__ Port 003: Dev 003, If 0, Class=Hub, Driver=hub/4p, 480M
        ID 174c:2074 ASMedia Technology Inc. ASM1074 High-Speed hub
    |__ Port 007: Dev 004, If 0, Class=Vendor Specific Class, Driver=[none], 12M
        ID 0b05:19af ASUSTek Computer, Inc. 
    |__ Port 007: Dev 004, If 2, Class=Human Interface Device, Driver=usbhid, 12M
        ID 0b05:19af ASUSTek Computer, Inc. 
/:  Bus 002.Port 001: Dev 001, Class=root_hub, Driver=xhci_hcd/5p, 20000M/x2
    ID 1d6b:0003 Linux Foundation 3.0 root hub
    |__ Port 002: Dev 002, If 0, Class=Hub, Driver=hub/5p, 5000M
        ID 0424:5734 Microchip Technology, Inc. (formerly SMSC) 
    |__ Port 003: Dev 003, If 0, Class=Hub, Driver=hub/4p, 5000M
        ID 174c:3074 ASMedia Technology Inc. ASM1074 SuperSpeed hub
/:  Bus 003.Port 001: Dev 001, Class=root_hub, Driver=xhci_hcd/2p, 480M
    ID 1d6b:0002 Linux Foundation 2.0 root hub
    |__ Port 001: Dev 002, If 0, Class=Hub, Driver=hub/4p, 480M
        ID 2109:2813 VIA Labs, Inc. VL813 Hub
        |__ Port 001: Dev 003, If 0, Class=Hub, Driver=hub/4p, 480M
            ID 2109:2813 VIA Labs, Inc. VL813 Hub
            |__ Port 001: Dev 006, If 0, Class=Human Interface Device, Driver=usbhid, 12M
                ID 05ac:024f Apple, Inc. Aluminium Keyboard (ANSI)
            |__ Port 001: Dev 006, If 1, Class=Human Interface Device, Driver=usbhid, 12M
                ID 05ac:024f Apple, Inc. Aluminium Keyboard (ANSI)
            |__ Port 002: Dev 009, If 0, Class=Human Interface Device, Driver=usbhid, 480M
                ID 0fd9:006d Elgato Systems GmbH Stream Deck original V2
            |__ Port 003: Dev 011, If 0, Class=Vendor Specific Class, Driver=[none], 480M
                ID 2104:0313 Tobii Technology AB 
            |__ Port 003: Dev 011, If 1, Class=Video, Driver=[none], 480M
                ID 2104:0313 Tobii Technology AB 
            |__ Port 003: Dev 011, If 2, Class=Video, Driver=[none], 480M
                ID 2104:0313 Tobii Technology AB 
            |__ Port 004: Dev 012, If 0, Class=Video, Driver=uvcvideo, 480M
                ID 046d:082d Logitech, Inc. HD Pro Webcam C920
            |__ Port 004: Dev 012, If 1, Class=Video, Driver=uvcvideo, 480M
                ID 046d:082d Logitech, Inc. HD Pro Webcam C920
            |__ Port 004: Dev 012, If 2, Class=Audio, Driver=snd-usb-audio, 480M
                ID 046d:082d Logitech, Inc. HD Pro Webcam C920
            |__ Port 004: Dev 012, If 3, Class=Audio, Driver=snd-usb-audio, 480M
                ID 046d:082d Logitech, Inc. HD Pro Webcam C920
        |__ Port 002: Dev 014, If 0, Class=Vendor Specific Class, Driver=usbfs, 480M
            ID 17e9:6000 DisplayLink 
        |__ Port 002: Dev 014, If 1, Class=Application Specific Interface, Driver=usbfs, 480M
            ID 17e9:6000 DisplayLink 
        |__ Port 002: Dev 014, If 2, Class=Audio, Driver=snd-usb-audio, 480M
            ID 17e9:6000 DisplayLink 
        |__ Port 002: Dev 014, If 3, Class=Audio, Driver=snd-usb-audio, 480M
            ID 17e9:6000 DisplayLink 
        |__ Port 002: Dev 014, If 4, Class=Audio, Driver=snd-usb-audio, 480M
            ID 17e9:6000 DisplayLink 
        |__ Port 002: Dev 014, If 5, Class=Communications, Driver=cdc_ncm, 480M
            ID 17e9:6000 DisplayLink 
        |__ Port 002: Dev 014, If 6, Class=CDC Data, Driver=cdc_ncm, 480M
            ID 17e9:6000 DisplayLink 
        |__ Port 003: Dev 005, If 0, Class=Hub, Driver=hub/4p, 480M
            ID 0bda:5411 Realtek Semiconductor Corp. RTS5411 Hub
            |__ Port 001: Dev 008, If 0, Class=Audio, Driver=snd-usb-audio, 12M
                ID 0951:1718 Kingston Technology 
            |__ Port 001: Dev 008, If 1, Class=Audio, Driver=snd-usb-audio, 12M
                ID 0951:1718 Kingston Technology 
            |__ Port 001: Dev 008, If 2, Class=Audio, Driver=snd-usb-audio, 12M
                ID 0951:1718 Kingston Technology 
            |__ Port 001: Dev 008, If 3, Class=Human Interface Device, Driver=usbhid, 12M
                ID 0951:1718 Kingston Technology 
            |__ Port 004: Dev 010, If 0, Class=Hub, Driver=hub/4p, 480M
                ID 0bda:5411 Realtek Semiconductor Corp. RTS5411 Hub
                |__ Port 002: Dev 021, If 0, Class=Mass Storage, Driver=usb-storage, 480M
                    ID 0781:5581 SanDisk Corp. Ultra
                |__ Port 003: Dev 013, If 0, Class=Mass Storage, Driver=usb-storage, 480M
                    ID 2537:1081 Norelsys 
        |__ Port 004: Dev 007, If 0, Class=Human Interface Device, Driver=usbhid, 12M
            ID 1532:0067 Razer USA, Ltd Naga Trinity
        |__ Port 004: Dev 007, If 1, Class=Human Interface Device, Driver=usbhid, 12M
            ID 1532:0067 Razer USA, Ltd Naga Trinity
        |__ Port 004: Dev 007, If 2, Class=Human Interface Device, Driver=usbhid, 12M
            ID 1532:0067 Razer USA, Ltd Naga Trinity
/:  Bus 004.Port 001: Dev 001, Class=root_hub, Driver=xhci_hcd/2p, 20000M/x2
    ID 1d6b:0003 Linux Foundation 3.0 root hub
/:  Bus 005.Port 001: Dev 001, Class=root_hub, Driver=xhci_hcd/2p, 480M
    ID 1d6b:0002 Linux Foundation 2.0 root hub
/:  Bus 006.Port 001: Dev 001, Class=root_hub, Driver=xhci_hcd/2p, 10000M
    ID 1d6b:0003 Linux Foundation 3.0 root hub
/:  Bus 007.Port 001: Dev 001, Class=root_hub, Driver=xhci_hcd/2p, 480M
    ID 1d6b:0002 Linux Foundation 2.0 root hub
/:  Bus 008.Port 001: Dev 001, Class=root_hub, Driver=xhci_hcd/2p, 10000M
    ID 1d6b:0003 Linux Foundation 3.0 root hub
/:  Bus 009.Port 001: Dev 001, Class=root_hub, Driver=xhci_hcd/1p, 480M
    ID 1d6b:0002 Linux Foundation 2.0 root hub

So it looks like based on what you were saying as well as this printout; The system can SEE all of the USB 3/USB 4 ports down at the bottom running at 20gbit/10gbit, but for some reason it's throwing all of my devices under the USB 2 "logical hub".

Offline

#4 2026-01-26 11:12:48

mmy8x
Member
Registered: 2025-03-02
Posts: 88

Re: [SOLVED] USB4 and USB3 ports seen as USB2 using 6.18.6

Looks like Bus 4 corresponds to Bus 3 but the hub on Port 1 failed to connect at SuperSpeed and only its High Speed part works.

So you are sure that this exact hub with this exact cable worked in this exact port on Windows?
What if you unplug the hub and connect something else in its place?
Please post dmesg log from this system.

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#5 2026-01-26 18:44:36

figferrofino
Member
Registered: 2026-01-25
Posts: 3

Re: [SOLVED] USB4 and USB3 ports seen as USB2 using 6.18.6

mmy8x wrote:

Looks like Bus 4 corresponds to Bus 3 but the hub on Port 1 failed to connect at SuperSpeed and only its High Speed part works.

So you are sure that this exact hub with this exact cable worked in this exact port on Windows?
What if you unplug the hub and connect something else in its place?
Please post dmesg log from this system.

It was working on Windows, yes, same exact setup for everything plugged in. But! I reinstalled Windows just to double check....and it was broken there too. I returned the motherboard and got a replacement (same model) and everything is working now!

Last edited by figferrofino (2026-01-26 18:45:17)

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