我搜索了很多次，但发现的大多数都是针对 Broadcom 的，或者不起作用。
电脑是 HP touchsmart 600，我认为它有一个 realtek wifi 卡，但我不确定。我想要使用的 wifi 适配器是 usb realtek wifi 适配器。
问题是，WiFi 有时可以连接，但大多数时候都连接不上，而且一旦连接就会立即断开连接。
我已经尝试了所有我能找到和想到的方法，非常感谢您的帮助。
编辑：输出lsusb：
Bus 002 Device 005: ID 0a5c:21b1 Broadcom Corp. HP Bluetooth Module
Bus 002 Device 004: ID 0bda:b812 Realtek Semiconductor Corp.
Bus 002 Device 007: ID 04f3:01a4 Elan Microelectronics Corp. Wireless Keyboard
Bus 002 Device 006: ID 046d:c518 Logitech, Inc. MX610 Laser Cordless Mouse
Bus 002 Device 003: ID 0409:0059 NEC Corp. HighSpeed Hub
Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 005: ID 04f2:b14c Chicony Electronics Co., Ltd CNF8050 Webcam
Bus 001 Device 004: ID 1926:0006 NextWindow 1950 HID Touchscreen
Bus 001 Device 003: ID 0bda:0158 Realtek Semiconductor Corp. USB 2.0 multicard reader
Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
输出lshw -C network(lash--class 网络不起作用)：
*-network
description: Wireless interface
product: RT3092 Wireless 802.11n 2T/2R PCIe
vendor: Ralink corp.
physical id: 0
bus info: pci@0000:02:00.0
logical name: wlp2s0
version: 00
serial: ac:81:12:03:53:21
width: 32 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=rt2800pci driverversion=5.8.0-41-generic firmware=0.40 ip=192.168.1.44 latency=0 link=yes multicast=yes wireless=IEEE 802.11
resources: irq:16 memory:fbdf0000-fbdfffff
*-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:04:00.0
logical name: enp4s0
version: 03
serial: 70:71:bc:aa:9f:33
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=5.8.0-41-generic firmware=rtl_nic/rtl8168d-1.fw latency=0 link=no multicast=yes port=MII
resources: irq:17 ioport:e800(size=256) memory:fbfff000-fbffffff memory:f8ffc000-f8ffffff memory:fbfc0000-fbfdffff