标题里全是内容。我运行的是 Mint 20 Xfce，使用的是较旧的 4.15.109 内核，因为这是唯一支持我的 wifi 适配器的内核，这是我的硬件设置 -
System: Kernel: 4.15.0-109-generic x86_64 bits: 64 compiler: gcc v: 7.5.0 Desktop: Xfce 4.14.2 Distro: Linux Mint 20 Ulyana
base: Ubuntu 20.04 focal
Machine: Type: Laptop System: HP product: HP Notebook v: Type1ProductConfigId serial: <filter>
Mobo: HP model: 80C1 v: 96.31 serial: <filter> UEFI: Insyde v: F.11 date: 07/23/2015
Battery: ID-1: BAT1 charge: 35.5 Wh condition: 35.5/41.6 Wh (85%) model: COMPAL PABAS0241231 status: Full
CPU: Topology: Dual Core model: Intel Core i5-5200U bits: 64 type: MT MCP arch: Broadwell rev: 4 L2 cache: 3072 KiB
flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 17557
Speed: 897 MHz min/max: 500/2700 MHz Core speeds (MHz): 1: 898 2: 898 3: 898 4: 898
Graphics: Device-1: Intel HD Graphics 5500 vendor: Hewlett-Packard driver: i915 v: kernel bus ID: 00:02.0
Display: x11 server: X.Org 1.20.8 driver: modesetting unloaded: fbdev,vesa resolution: 1366x768~60Hz
OpenGL: renderer: Mesa Intel HD Graphics 5500 (BDW GT2) v: 4.6 Mesa 20.0.8 direct render: Yes
Audio: Device-1: Intel Broadwell-U Audio vendor: Hewlett-Packard driver: snd_hda_intel v: kernel bus ID: 00:03.0
Device-2: Intel Wildcat Point-LP High Definition Audio vendor: Hewlett-Packard driver: snd_hda_intel v: kernel
bus ID: 00:1b.0
Sound Server: ALSA v: k4.15.0-109-generic
Network: Device-1: Realtek RTL810xE PCI Express Fast Ethernet vendor: Hewlett-Packard driver: r8169 v: 2.3LK-NAPI port: 4000
bus ID: 07:00.0
IF: enp7s0 state: down mac: <filter>
Device-2: Realtek RTL8723BE PCIe Wireless Network Adapter vendor: Hewlett-Packard driver: rtl8723be v: kernel
port: 3000 bus ID: 0d:00.0
IF: wlp13s0 state: up mac: <filter>
Drives: Local Storage: total: 465.76 GiB used: 159.29 GiB (34.2%)
ID-1: /dev/sda vendor: HGST (Hitachi) model: HTS545050A7E680 size: 465.76 GiB
Partition: ID-1: / size: 453.26 GiB used: 129.10 GiB (28.5%) fs: btrfs dev: /dev/sda2
ID-2: /home size: 453.26 GiB used: 129.10 GiB (28.5%) fs: btrfs dev: /dev/sda2
ID-3: swap-1 size: 12.00 GiB used: 0 KiB (0.0%) fs: swap dev: /dev/sda3
Sensors: System Temperatures: cpu: 39.5 C mobo: N/A
Fan Speeds (RPM): N/A
Info: Processes: 255 Uptime: 28m Memory: 11.64 GiB used: 2.25 GiB (19.3%) Init: systemd runlevel: 5 Compilers: gcc: 9.3.0
clang: 10.0.0-4ubuntu1 Shell: bash v: 5.0.17 inxi: 3.0.38
这是lwconfig我的 4.15.109 内核 -
wlp13s0 IEEE 802.11 ESSID:"mySSID"
Mode:Managed Frequency:2.417 GHz Access Point: 34:E8:94:66:C5:B6
Bit Rate=72.2 Mb/s Tx-Power=20 dBm
Retry short limit:7 RTS thr=2347 B Fragment thr:off
Power Management:off
Link Quality=68/70 Signal level=-42 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:40391 Missed beacon:0
lo no wireless extensions.
...当我启动 5.4.0.45（最新版本）时，我得到了以下结果 -
wlp13s0 IEEE 802.11 ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=20 dBm
Retry short limit:7 RTS thr=2347 B Fragment thr:off
Power Management:on
我搜索过的所有地方都提到了左手指Github 上的存储库，但 RTL8723BE 的特定子项目抛出了 404。
有没有办法让我的适配器与 5.x 内核一起工作，还是我永远停留在 4.15.109 上？