Not sure how to install a WiFi driver in Ubuntu 18.04 as I have tried many way to solve the issue. Now I can't connect to internet through WiFi. I couldn't find a solution for Thinkpad E14 gen 2
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1The problem is finally resolved. Following this instruction to download a newer version of iwlwifi and make sure to disable secure boot before. https://askubuntu.com/a/1156246/1175174 – Ambrose Liu Feb 09 '21 at 02:06
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What kernel are you using? Is suspend working for you? – Oren Saldanha Feb 21 '21 at 12:42
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Can you please take a look at this: https://unix.stackexchange.com/questions/635492/ubuntu-wont-boot-after-kernel-update/635531 Can you try a kernel after 5.5? – Oren Saldanha Feb 23 '21 at 03:46
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I'm using " Linux version 4.15.0-135-generic" – Ambrose Liu Feb 22 '21 at 18:54
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SOLVED: must update kernel to 5.11 You can do this by installing Ubuntu Mainline Kernel installer. There are tutorials on line on how to install Mainline. The lenovo thinkpad P14s uses the AX201 wifi 6 and is therefore not supported in lower kernel. Do remember that newer kernels may not be stable and could lead to other issues until it is certified as stable.
Hope this helps someone else out there.
Biddy
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For E14 Gen3 I had to manually install drivers. Follow instructions from https://github.com/lwfinger/rtw89
Gregor
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