我之前使用的是 Ubuntu 21.10，WiFi 连接速度很快（超过 100Mbps）。升级到 Ubuntu 22.04（测试版）后，速度变得非常慢（最高 12Mbps）。
以下是输出sudo lshw -C network：
*-network
description: Wireless interface
product: AR93xx Wireless Network Adapter
vendor: Qualcomm Atheros
physical id: 0
bus info: pci@0000:04:00.0
logical name: wlp4s0
version: 01
serial: 18:d6:c7:1b:67:98
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list rom ethernet physical wireless
configuration: broadcast=yes driver=ath9k driverversion=5.15.0-25-generic firmware=N/A ip=192.168.1.16 latency=0 link=yes multicast=yes wireless=IEEE 802.11
resources: irq:18 memory:f7100000-f711ffff memory:f7120000-f712ffff
任何想法？