Re: Linux 6.18-rc6

[Stephanie Gawroriski <xerthesquirrel@gmail.com>]

Hi!

On Monday, 24 November 2025 04:50:03 EST Heikki Krogerus wrote:
> I'm still trying to figure this out, but let's rule out one of my
> concerns..
> 
> Can you check are the symlinks pointing to the correct USB devices
> under /sys/class/typec ?
> 
> It's probable easiest with just one USB device connected to the
> system. With one USB device connected to the system there should be
> only one partner under /sys/class/typec (for example port0-partner),
> so it should be easy to check if the symlink under that partner
> device is pointing to the correct USB device.
> 
>         % ls -la /sys/class/typec/port<x>-partner/
> 
> You should see a symlink to an USB device under it. Can you check if
> it's the correct USB device?
> 
> If it's not the correct USB device, then the ACPI table may have wrong
> _PLD (Physical Location of Device) objects for these USB port or USB
> Type-C connector device nodes. The code uses the _PLD to link the
> correct USB port to the USB Type-C connector.
> 
> thanks,

The USB-C cable is plugged into the connector that is furthest to the back of 
the device. Bus 2 and Bus 3 are connected to the same port, the ethernet 
controller is connected to the dock, so I am guessing that it is using the 
USB-only interface of the USB-C port, not sure why it would be not under Bus 
3?

These are the outputs along with the USB and PCI tree:

stephanie@arborvitaetree:~$ ls -la /sys/class/typec/port1-partner/
total 0
drwxr-xr-x 4 root root    0 Nov 26 10:30 .
drwxr-xr-x 8 root root    0 Nov 24 15:14 ..
lrwxrwxrwx 1 root root    0 Nov 26 10:30 2-3 -> ../../../../../
pci0000:00/0000:00:0d.0/usb2/2-3
lrwxrwxrwx 1 root root    0 Nov 26 10:30 3-3 -> ../../../../../
pci0000:00/0000:00:14.0/usb3/3-3
-r--r--r-- 1 root root 4096 Nov 26 10:30 accessory_mode
lrwxrwxrwx 1 root root    0 Nov 25 23:42 device -> ../../port1
-r--r--r-- 1 root root 4096 Nov 26 10:30 number_of_alternate_modes
drwxr-xr-x 5 root root    0 Nov 25 23:42 pd2
drwxr-xr-x 2 root root    0 Nov 26 10:29 power
lrwxrwxrwx 1 root root    0 Nov 25 23:42 subsystem -> ../../../../../../class/
typec
-r--r--r-- 1 root root 4096 Nov 26 10:30 supports_usb_power_delivery
-rw-r--r-- 1 root root 4096 Nov 25 23:42 uevent
-r--r--r-- 1 root root 4096 Nov 26 10:30 usb_mode
lrwxrwxrwx 1 root root    0 Nov 26 10:30 usb_power_delivery -> pd2
-r--r--r-- 1 root root 4096 Nov 26 10:30 usb_power_delivery_revision

stephanie@arborvitaetree:/sys/class/typec$ lsusb -tv
/:  Bus 001.Port 001: Dev 001, Class=root_hub, Driver=xhci_hcd/1p, 480M
    ID 1d6b:0002 Linux Foundation 2.0 root hub
/:  Bus 002.Port 001: Dev 001, Class=root_hub, Driver=xhci_hcd/4p, 20000M/x2
    ID 1d6b:0003 Linux Foundation 3.0 root hub
    |__ Port 003: Dev 005, If 0, Class=Hub, Driver=hub/4p, 10000M
        ID 8087:0b40 Intel Corp. 
        |__ Port 004: Dev 006, If 0, Class=Hub, Driver=hub/4p, 10000M
            ID 2109:0822 VIA Labs, Inc. 
            |__ Port 002: Dev 007, If 0, Class=Communications, Driver=cdc_ncm, 
5000M
                ID 0b95:1790 ASIX Electronics Corp. AX88179 Gigabit Ethernet
            |__ Port 002: Dev 007, If 1, Class=CDC Data, Driver=cdc_ncm, 5000M
                ID 0b95:1790 ASIX Electronics Corp. AX88179 Gigabit Ethernet
/:  Bus 003.Port 001: Dev 001, Class=root_hub, Driver=xhci_hcd/12p, 480M
    ID 1d6b:0002 Linux Foundation 2.0 root hub
    |__ Port 003: Dev 023, If 0, Class=Hub, Driver=hub/6p, 480M
        ID 1d5c:5801 Fresco Logic 
        |__ Port 001: Dev 024, If 0, Class=Billboard, Driver=[none], 1.5M
            ID 291a:87e0  
        |__ Port 004: Dev 025, If 0, Class=Hub, Driver=hub/4p, 480M
            ID 2109:2822 VIA Labs, Inc. 
            |__ Port 001: Dev 027, If 0, Class=Hub, Driver=hub/4p, 480M
                ID 1a40:0101 Terminus Technology Inc. Hub
                |__ Port 001: Dev 028, If 0, Class=Human Interface Device, 
Driver=usbhid, 1.5M
                    ID 17ef:608d Lenovo Optical Mouse
                |__ Port 002: Dev 029, If 0, Class=Human Interface Device, 
Driver=usbhid, 12M
                    ID 0c45:7692 Microdia 
                |__ Port 002: Dev 029, If 1, Class=Human Interface Device, 
Driver=usbhid, 12M
                    ID 0c45:7692 Microdia 
                |__ Port 004: Dev 030, If 0, Class=Video, Driver=uvcvideo, 
480M
                    ID 17ef:4836 Lenovo 
                |__ Port 004: Dev 030, If 1, Class=Video, Driver=uvcvideo, 
480M
                    ID 17ef:4836 Lenovo 
                |__ Port 004: Dev 030, If 2, Class=Audio, Driver=snd-usb-
audio, 480M
                    ID 17ef:4836 Lenovo 
                |__ Port 004: Dev 030, If 3, Class=Audio, Driver=snd-usb-
audio, 480M
                    ID 17ef:4836 Lenovo 
        |__ Port 005: Dev 026, If 0, Class=Billboard, Driver=[none], 12M
            ID 2eb9:0123  
        |__ Port 005: Dev 026, If 1, Class=Vendor Specific Class, 
Driver=[none], 12M
            ID 2eb9:0123  
    |__ Port 006: Dev 022, If 0, Class=Vendor Specific Class, Driver=[none], 
12M
        ID 06cb:00fc Synaptics, Inc. Prometheus Fingerprint Reader
    |__ Port 008: Dev 003, If 0, Class=Video, Driver=uvcvideo, 480M
        ID 30c9:0051 Luxvisions Innotech Limited 
    |__ Port 008: Dev 003, If 1, Class=Video, Driver=uvcvideo, 480M
        ID 30c9:0051 Luxvisions Innotech Limited 
    |__ Port 008: Dev 003, If 2, Class=Application Specific Interface, 
Driver=[none], 480M
        ID 30c9:0051 Luxvisions Innotech Limited 
    |__ Port 010: Dev 004, If 0, Class=Wireless, Driver=btusb, 12M
        ID 8087:0033 Intel Corp. AX211 Bluetooth
    |__ Port 010: Dev 004, If 1, Class=Wireless, Driver=btusb, 12M
        ID 8087:0033 Intel Corp. AX211 Bluetooth
/:  Bus 004.Port 001: Dev 001, Class=root_hub, Driver=xhci_hcd/4p, 10000M
    ID 1d6b:0003 Linux Foundation 3.0 root hub

stephanie@arborvitaetree:/sys/class/typec$ lspci -tv -nn
-[0000:00]-+-00.0  Intel Corporation Raptor Lake-P 6p+8e cores Host Bridge/
DRAM Controller [8086:a706]
           +-02.0  Intel Corporation Raptor Lake-P [Iris Xe Graphics] 
[8086:a7a0]
           +-04.0  Intel Corporation Raptor Lake Dynamic Platform and Thermal 
Framework Processor Participant [8086:a71d]
           +-06.0-[04]----00.0  Sandisk Corp WD Blue SN5000 NVMe SSD (DRAM-
less) [15b7:504a]
           +-07.0-[20-49]--
           +-07.2-[50-79]----00.0-[51-79]--+-00.0-[52]--
           |                               +-01.0-[53-5f]--
           |                               +-02.0-[60-6c]--
           |                               +-03.0-[6d-78]--
           |                               \-04.0-[79]--
           +-08.0  Intel Corporation GNA Scoring Accelerator module 
[8086:a74f]
           +-0a.0  Intel Corporation Raptor Lake Crashlog and Telemetry 
[8086:a77d]
           +-0d.0  Intel Corporation Raptor Lake-P Thunderbolt 4 USB 
Controller [8086:a71e]
           +-0d.2  Intel Corporation Raptor Lake-P Thunderbolt 4 NHI #0 
[8086:a73e]
           +-0d.3  Intel Corporation Raptor Lake-P Thunderbolt 4 NHI #1 
[8086:a76d]
           +-12.0  Intel Corporation Alder Lake-P Integrated Sensor Hub 
[8086:51fc]
           +-14.0  Intel Corporation Alder Lake PCH USB 3.2 xHCI Host 
Controller [8086:51ed]
           +-14.2  Intel Corporation Alder Lake PCH Shared SRAM [8086:51ef]
           +-14.3  Intel Corporation Raptor Lake PCH CNVi WiFi [8086:51f1]
           +-15.0  Intel Corporation Alder Lake PCH Serial IO I2C Controller 
#0 [8086:51e8]
           +-15.1  Intel Corporation Alder Lake PCH Serial IO I2C Controller 
#1 [8086:51e9]
           +-16.0  Intel Corporation Alder Lake PCH HECI Controller 
[8086:51e0]
           +-1c.0-[08]----00.0  Intel Corporation XMM7560 LTE Advanced Pro 
Modem [8086:7560]
           +-1f.0  Intel Corporation Raptor Lake LPC/eSPI Controller 
[8086:519d]
           +-1f.3  Intel Corporation Raptor Lake-P/U/H cAVS [8086:51ca]
           +-1f.4  Intel Corporation Alder Lake PCH-P SMBus Host Controller 
[8086:51a3]
           \-1f.5  Intel Corporation Alder Lake-P PCH SPI Controller 
[8086:51a4]

stephanie@arborvitaetree:/sys/class/typec$ ls -w 1 port0/
data_role
device
firmware_node
physical_location
port0.0
port0.1
port0.2
power
power_operation_mode
power_role
preferred_role
subsystem
supported_accessory_modes
uevent
usb2-port1
usb3-port1
usb4_port1
usb_capability
usb_power_delivery
usb_power_delivery_revision
usb_typec_revision
vconn_source
waiting_for_supplier

stephanie@arborvitaetree:/sys/class/typec$ ls -w 1 port1/
data_role
device
firmware_node
physical_location
port1.0
port1.1
port1.2
port1-partner
power
power_operation_mode
power_role
preferred_role
subsystem
supported_accessory_modes
uevent
usb2-port3
usb3-port3
usb4_port7
usb_capability
usb_power_delivery
usb_power_delivery_revision
usb_typec_revision
vconn_source
waiting_for_supplier