Solved!

Well after some time, the freezes which were not that often became to often. I could tell it was getting ready to freeze, watching videos on YouTube, videos with stall, I could reload the page, they would still stall, eventually Firefox would freeze. Usually when I had six or more tabs open with videos I planned to watch.

I held up until mozilla-firefox-94.0.2 was released. I built mozilla-firefox-94.0.2-x86_64-1cgs.txz from the source tree build. Only modifications were adding a tag and some custom language patches. I downgraded rust-1.56.1-x86_64-1 to rust-1.55.0-x86_64-2.txz before starting the build. This is based on the information from the link that Pat provided in ChangeLog.txt. This is the version of rust for firefox 94. I am posting from it now. Working well so far, it only been a day but zero freezes. I am also back to the Slackware version of rust 1.56.1.

1 members found this post helpful.

Well that did not work. Still got freezes every now and then. I even tried going back to rust 1.54.0; which I needed to rebuild due to llvm being upgraded. I was a grand adventure.

I am now on Firefox 94.0.2 compiled with Rust 1.56.1 using the source tree build.

The only differences between my build and the Slackware build is I added a tag, a few custom language patches and this patch: https://phabricator.services.mozilla.com/D128657

I've been running this version with the patch since November 22, 2021, not a single freeze. Tried https://www.dailymotion.com/video/x8...laylist=x5nmbq which loads normally, not like before. I tried a quite a few other videos there as well. My problems with YouTube are also gone.

The only problem I'm having is when viewing the Help > About Firebox box. It is blank, with only the window outline visible. I close FF, then reopen and go to Help > About Firefox, and it is fine. Goes blank again on the next try. Not a real problem just annoying.

I tried a screenshot, and the blank window went to normal. Weird...

I get that on first run of a new Firefox build, but I just have to move my mouse off of it and on again and the contents get painted (I use "focus follows mouse" in my WM). My current build, I had to close the about window and open it again and it displayed correctly. (same thing on 3 systems running the same build for the first time)

2 members found this post helpful.

I've never noticed this behavior regarding the About Firefox box. I put it on my to-do list to check on my next build.

Mouse over didn't work, but maxing out the window does. I then minimize and close. Or, sending it to the taskbar and bringing it back works also. Don't need a solution, was just curious about the behavior.