If the system firmware hasn't been updated since its release or purchase, then do so. According to Acer's support website the most current version is from 2018 carrying the microcode mitigations for the initial Meltdown & Spectre hardware vulnerabilities in the laptop's CPU. I wouldn't worry too much about Spectre for various reasons that I won't go into on this forum. But, it neatly wraps up all the accumulated firmware fixes and workarounds for hardware bugs into one final release, and that's what you want. Ubuntu will load subsequent microcode versions anyway during its boot process.
Most PCs, even ones from 2015, no longer need MSDOS/Windows to update the system firmware. Just load the update image file (extracted from the .zip archive! NOT the archive itself!) on a FAT32 formatted USB flash drive, insert the flash drive in the laptop's USB port, hit the key sequence needed to enter the firmware setup screen or the one that directly initiates the firmware update function during boot, and go from there.
I personally use Debian, but Ubuntu isn't a bad choice for those not familiar with Unix-type systems and Linux in particular. A note of caution. If you're loading Ubuntu for a neophyte, don't use a non LTS version. They should have the current LTS version, in this case 22.04.x. 23.XX are the test releases and aren't considered appropriate for daily use by those not testing the software and reporting bugs back to Canonical. 24.04 will be the next LTS release due out around April. It's usually a straightforward process to upgrade from one LTS to the next without major hiccups. The built-in updater will usually wait some months for LTS.1 to be released before it'll prompt to update on already existing LTS installations to be sure the LTS has shook down and most major bugs have been squashed. I think it's remarkably sane in that way.
Edited by h_b_s, 09 January 2024 - 04:48 AM.