有什么方法可以判断我的笔记本电脑上的 USB-C 端口是否支持 DP Alt 模式？我联系了供应商，但没有得到任何回复。
我正在运行 Ubuntu 21.04，内核为 5.11.0-25
CONFIG_TYPEC_DP_ALTMODE=m
笔记本电脑 Acer Aspire A715-42G-R7NL
/: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 10000M
|__ Port 1: Dev 3, If 0, Class=Mass Storage, Driver=usb-storage, 5000M
/: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 480M
|__ Port 2: Dev 6, If 0, Class=Hub, Driver=hub/4p, 480M
|__ Port 3: Dev 7, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
|__ Port 3: Dev 7, If 1, Class=Human Interface Device, Driver=usbhid, 1.5M
|__ Port 4: Dev 8, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
|__ Port 3: Dev 3, If 0, Class=Video, Driver=uvcvideo, 480M
|__ Port 3: Dev 3, If 1, Class=Video, Driver=uvcvideo, 480M
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 10000M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 480M
|__ Port 3: Dev 2, If 0, Class=Vendor Specific Class, Driver=, 12M
|__ Port 4: Dev 3, If 1, Class=Wireless, Driver=btusb, 12M
|__ Port 4: Dev 3, If 0, Class=Wireless, Driver=btusb, 12M
谢谢