我的 Ubuntu 20.04 安裝遇到問題，沒有乙太網路接口，而且找不到恢復它的方法。我的情況非常相似這問題，但我無法存取外部網路卡，我懷疑這是否適合我。我有一個 USB wifi 適配器，但係統無法識別它，並且我無法建立驅動程式（當我嘗試編譯它們時，出現編譯錯誤）。當我進行此安裝時，我選擇了最小安裝選項，這可能是無法識別 USB 適配器的原因。
任何幫助至少讓以太網連接再次工作將不勝感激。我花了很多時間定制這個安裝，如果我可以避免的話，我寧願不必經歷並重新做所有這些工作。在一天結束時，我總是可以重新安裝，但我想避免它。
背景
由於一些驅動程式問題，我的螢幕解析度一直停留在 800x600。我以前已經解決過這個問題，但忘記了具體是如何解決的，所以我做了一些谷歌搜索，並遵循了一些解決方案，但沒有一個對我有用。我還有其他事情要處理，所以我放棄了這個問題並離開了電腦幾個星期。當我回到這個問題時，我還注意到我不再有網路連線。在嘗試了一些事情（我現在都不記得了）、更換網路電纜、購買新主機板、CPU 和 RAM（無論如何我想要升級並且認為我使用的古老主機板終於要死了）之後，我意識到還有其他事情出了問題。
我無法直接在機器上安裝任何東西，我已經能夠透過在另一台機器上下載它們及其依賴項、將它們放在 USB 上並從 USB 安裝它們來安裝一些軟體包。下面是我在其他線程中看到的一堆命令的輸出。
ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
sudo lshw -C network
*-network UNCLAIMED
description: Ethernet controller
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:25:00.0
version: 15
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix bus_master cap_list
configuration: latency=0
resources: ioport:f000(size=256) memory:f7504000-f7504fff memory:f7500000-f7503fff
lspci
00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Root Complex
00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) I/O Memory Management Unit
00:01.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge
00:01.3 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) PCIe GPP Bridge
00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge
00:03.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge
00:03.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) PCIe GPP Bridge
00:04.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge
00:07.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge
00:07.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Internal PCIe GPP Bridge 0 to Bus B
00:08.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge
00:08.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Internal PCIe GPP Bridge 0 to Bus B
00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 59)
00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 51)
00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 0
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 1
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 2
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 3
00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 4
00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 5
00:18.6 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 6
00:18.7 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 7
03:00.0 USB controller: Advanced Micro Devices, Inc. [AMD] Device 43bc (rev 02)
03:00.1 SATA controller: Advanced Micro Devices, Inc. [AMD] Device 43b8 (rev 02)
03:00.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43b3 (rev 02)
20:04.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset PCIe Port (rev 02)
20:05.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset PCIe Port (rev 02)
20:06.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset PCIe Port (rev 02)
20:07.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset PCIe Port (rev 02)
25:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 15)
29:00.0 VGA compatible controller: NVIDIA Corporation GP107 [GeForce GTX 1050 Ti] (rev a1)
29:00.1 Audio device: NVIDIA Corporation GP107GL High Definition Audio Controller (rev a1)
2a:00.0 Non-Essential Instrumentation [1300]: Advanced Micro Devices, Inc. [AMD] Zeppelin/Raven/Raven2 PCIe Dummy Function
2a:00.2 Encryption controller: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Platform Security Processor
2a:00.3 USB controller: Advanced Micro Devices, Inc. [AMD] Zeppelin USB 3.0 Host controller
2b:00.0 Non-Essential Instrumentation [1300]: Advanced Micro Devices, Inc. [AMD] Zeppelin/Renoir PCIe Dummy Function
2b:00.2 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] (rev 51)
2b:00.3 Audio device: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) HD Audio Controller
cat /etc/netplan/01-netcfg.yaml
#Let NetworkManager manage all devices on this system
network:
version: 2
renderer: NetworkManager
modinfo r8168/modinfo r8169
這兩個命令都會產生模組未找到訊息
編輯
寫完我的問題後，我嘗試安裝dkms和r8168-dkms，效果很好，但我仍然沒有網路連線。我相當確定我sudo modprobe r8169在這一點上嘗試過，但我可能還沒有。我還嘗試linux-generic-hwe-20.04按照另一個問題中提到的方式安裝，但由於一些錯誤而沒有完成。
看到@Terrance 的評論後，我決定再試sudo modprobe r8169一次，結果成功了。要么我之前實際上沒有運行該命令，要么我的安裝嘗試linux-generic-hwe-20.04足以讓驅動程式正常工作（我不確定這是否可能）。
最終結果是我的系統運作得足夠好，我應該能夠修復它，但我不知道更讓我煩惱的確切修復