I'm trying to run an Ubuntu live on a USB stick instead to install it after.
But the system freezes during the boot screen, with the manufacturer logo...
I've tried nomodeset and it still does not work.
USB live stick created with Rufus 3.10 and launch on an Acer Swift 3, Ryzen 5 3500U.
Thanks in advance
I might be late to the party, but this might help people with identical problems.
I had exactly the same problem as you. Not only Ubuntu, but Lubuntu, Mint, Zorin, antiX... They all failed to live boot and hanged midway during the boot. I checked the integrity of the ISO's, tried creating the USB media using DD, all to no avail. I had been using previous versions of Rufus without problems for years... and that's when it hit me - All these were created using Rufus 3.10, which I hadn't used before.
Just to check, I created a live USB media using balenaEtcher and, sure enough, it worked on the first try.
Tried the other flavors too and they all worked (using the very same ISO's as before).
Something is off with Rufus 3.10...
Unplug the sick and try again.
If your hardware freezes without the stick inserted, then you have a hardware issue unrelated to Ubuntu.
If your hardware freezes only when the stick is inserted, then test the stick in another machine.
If the stick fails in multiple machines, then re-download (and verify) the .iso file, and re-make the stick.
If the stick fails after several careful tries, then get a new stick.
I have been working on about 2 dozen laptops recently and run into several issues getting the different machines to boot from USB. Fiddling with the BIOS settings and forcing the boot order to have the USB disk ahead of the hard drive sometimes works. Switching between support for legacy, uefi, both sometimes does the trick. And I have also seen certain flash drives just not work. You can burn the image to it but nothing will boot from it. if the machine has a boot option where you can temp select the device you want to boot from that is always a good bet.
