The wifi stopped working, so I plugged in a ethernet cable, and lshw -C network shows both adapters as unclaimed. I have tried a few things suggestions found google that didn't work, before trying to reinstall Ubuntu 20.04.2.0 LTS. I'm writing this from the same computer now logged into windows, so there's nothing wrong with the hardware, both wifi and ethernet are shown in windows. The clean install still did not have any network connection on the first boot (or during install). I'm on the 2nd boot attempt and I now HAVE wifi, but the ethernet is still unclaimed. I have an Asus TUF 550 motherboard with wifi. It seems a few people have had this . This has happened a few times to me since installing Ubuntu 20.04 on this desktop, but not with my dell inspiron 2016. sudo lshw -C network [sudo] password for bryan:    *-network                         description: Wireless interface        product: Wi-Fi 6 AX200        vendor: Intel Corporation        physical id: 0        bus info: pci@0000:05:00.0        logical name: wlp5s0        version: 1a        serial: 14:f6:d8:7f:b8:45        width: 64 bits        clock: 33MHz        capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical wireless        configuration: broadcast=yes driver=iwlwifi driverversion=5.8.0-43-generic firmware=55.d9698065.0 cc-a0-55.ucode latency=0 link=no multicast=yes wireless=IEEE 802.11        resources: irq:34 memory:fc600000-fc603fff   *-network UNCLAIMED        description: Ethernet controller        product: RTL8125 2.5GbE Controller        vendor: Realtek Semiconductor Co., Ltd.        physical id: 0        bus info: pci@0000:06:00.0        version: 04        width: 64 bits        clock: 33MHz        capabilities: pm msi pciexpress msix vpd cap_list        configuration: latency=0        resources: ioport:f000(size=256) memory:fc500000-fc50ffff memory:fc510000-fc513fff
So I did a fresh install of Ubuntu 20.04 on a computer with the new RTL8125B Realtek network card and I cannot get the network to work. I was very suprised since this is supposed to be the new feature of the 5.4 kernel (I have 5.4.0-26-generic installed). Does anyone have any idea on how to get it working? Thank you. $ lspci -knn | grep Eth -A3 06:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8125 2.5GbE Controller [10ec:8125] (rev 04) Subsystem: ASUSTeK Computer Inc. RTL8125 2.5GbE Controller [1043:87d7] Kernel modules: r8169 07:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Ellesmere [Radeon RX 470/480/570/570X/580/580X/590] [1002:67df] (rev e7)  $ dmesg | grep -i r8169 [    0.911236] r8169 0000:06:00.0: unknown chip XID 641
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In this case the negative effect of holding LiPo batteries at 100% would outweigh everything else.  Elaborating on Option 2  There are lots of good reasons why Option 2 is the way it is:   Because of known LiPo chemistry issues, holding a 100% charge for a long time causes the battery to degrade Apple specifically recommends not to leave it plugged in all the time  Draining a battery all the way to zero all the time is bad for the cell (Which is why ~10% is used) Heat is a killer, and when plugged in AND charging, you get extra heat that causes damage.   There are a couple reasons why I'm challenging Option 2:   It seems silly that the most intuitive use case for thousands of people that use their macs as primary computers is wrong. If the hypothesis in option 1 is true, you're just burning unnecessarily through your finite charge cycles. It's a pain to have to remember to keep plugging in and plugging out and be worried about whether or not your device is plugged in. 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