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Everything went wrong after an unfinished kernel upgrade (Ubuntu 20.04.1.LTS). Bios refused to let me enter the UEFI menu. The computer turned power off when tried. I got it booting now, but grub tells "Grub failed boot detection" and nvidia is not detected. ( I can see it using the live install media) nvidia-smi : "NVIDIA-SMI has failed because it couldn't communicate with the NVIDIA driver. Make sure that the latest NVIDIA driver is installed and running."

Of course I have the latest driver from the ppa (nvidia-driver-460). Secure boot is disabled, Bios user password is set, anyway nothing changes. I've prepared the boot info using the boot-repair utility, here is the pastebin info obtained https://paste.ubuntu.com/p/2zh3KpQCDt/

Please Help Me! I suspect that this is related to the TPM (Stat storage and endorsement function swithch) but I am not brave enough for clearing it in the BIOS since I'm afraid that the machine will never boot again

mariano
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1 Answers1

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Firstly, thank you very much for you support, especially Oldfred. I had to reset the battery; enter the bios and resetting all stuff for linux (secure boot, touchpad, AHCI, etc). I could boot, but the kernel modules were still failing (and unable to install any driver, name it nvidia, virtualbox). I could not fix it by updating grub or initramfs in ubuntu rescue mode.Finally Boot Repair could solve everything. For the boot-repair utility (https://sourceforge.net/p/boot-repair-cd/home/Home/) you can install it (after adding the ppa, http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu) or create a bootable stick.

mariano
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