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I have recently purchased a Lenovo ThinkPad T14 (Gen 1) notebook and, when I installed ubuntu 20.04, the wifi stopped working. I have updated all of the drivers, but the wireless card does not work.

This is the output of lspci -nnk | grep 0280:

03:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. Device [10ec:8852] Subsystem: Lenovo Device [17aa:4852]
04:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS522A PCI Express Card Reader [10ec:522a] (rev 01) Subsystem: Lenovo RTS522A PCI Express Card Reader [17aa:5082]

How can I use WiFi on this notebook?

matigo
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    Let's gather some details about your wireless device. Please open a terminal Ctrl+Alt+t and run: lspci -nnk | grep 0280 -A3 Next, edit your question to show the result. Welcome to Ask Ubuntu. – chili555 Oct 19 '21 at 22:03
  • lspci -nnk | grep 0280 -A3 03:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. Device [10ec:8852] Subsystem: Lenovo Device [17aa:4852] 04:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS522A PCI Express Card Reader [10ec:522a] (rev 01) Subsystem: Lenovo RTS522A PCI Express Card Reader [17aa:5082]

    This is the network driver information for my thinkpad T14 gen 1 laptop

    – Sebastian Meza Gonzalez Oct 26 '21 at 15:24
  • You need to install the rtw89 driver for your 10ec:8852 wireless. Please see the duplicate for the procedure. https://askubuntu.com/questions/1352260/wifi-adapter-not-found-realtek-10ec8852-on-ubuntu-21-04 – chili555 Oct 27 '21 at 20:33

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For someone who installing Ubuntu on their T14 gen 1 AMD and get the same error, and can find /usr/lib/firmware/rtw89/ when trying ubuntu live version. Simply try enabling the module: sudo modprobe rtw89pci

Dimas Ari
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