Ubuntu Firefox 100.0 all downloads fail immediately
Starting around v98.x, every attempt to download a file (eg with "Save Link as") immediately result in a Failed message in the download list.
This happens despite the setting "Always ask where to save files", though it doesn't matter. The Failed message appears before I am asked where the file should be saved.
Downloads work if I log in as another user.
If I restart firefox with "-safe-mode", I can do downloads. But not if I then start in regular mode.
The problem started in late March or early April 2022.
Extensions: Facebook Container, GNOME Shell integration, Hide Private Mode, IP Address and Domain Information, NoScript, TreeStyle Tab, uBlock Origin
Alle svar (3)
When you log in as a different user, you would use a different Firefox profile so it's likely to be an extension (or other add-on). You have very few extensions so you could disable all and enable one at a time to find which is responsible. To speed the process, enable half of them and you will then know which half contains the extension which is responsible.
https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems (also deals with hardware acceleration)
Well, I tried Terry's suggestion. I disabled all the extensions. Downloading worked. I re-enabled four. Downloading worked. I re-enabled two more. Downloading worked. I re-enabled the last one. Downloading worked!
Which is great news, of course: I am back to the way things were two months ago, with all extensions enabled. My problem is solved! (Thanks, Terry!)
But, I mean, WTF? Cosmic rays?
Modern technology has given us the switch off, switch on solution. I hope your result lasts.