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Accepted
Olumide
Asked: 2019-03-07 14:13:00 +0800 CST

Ubuntu 18.04 LTS stuck in Logon Loop after switching GPU from NVIDIA to Intel

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Yesterday, in the bid to lengthen by battery life I switched my GPU from NVIDIA (Performance Mode) to Intel (Power Saving Mode) in the app shown below (screenshot borrowed) -- not the first time that I have done this but its the first time I have done so in a while. (No other changes to the system were made.)

After the change I got a messages saying that the change will take effect after I logon again. So I thought "oh well ... I'll do that later" but never did and powered down. Today when I booted up I could not logon again.

BTW, I have to logon to the console by pressing Ctrl+Alt+F3 or Ctrl+Alt+F7 but that too fails. And if I overdo it the systems freezes. I was able to get to the console once through the recovery mode though.

enter image description here

nvidia login

1 Answers

  1. Best Answer

    I managed to get the command line via recovery and ran

    sudo prime-select nvidia

    Prior to running the above command

    prime-select query

    returned intel. Now it returns nvidia.

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