Firefox crashing when starting

Ask Fedora
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1

A few days ago firefox came up with a pop up that it had to restart for an update. It happened after I ran sudo dnf update. Since then whenever I start firefox it crashes. And pops up one of the following messages.
image or
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If I open firefox in troubleshoot mode it does open and I learned if I disable Hardware accelleration it does start normally. However then when i open most websites it just crashes.

I can’t find any error logs and have already removed all user files.

All other applications work fine, and only firefox is broken.

2

Which firefox do you have installed?
Is it from Fedora RPMs a Flatpak something else?

Maybe createing a new profile will work.
Try running firefox -P and creating a new profile.
Then start firefox does that fix the crashing?

3

I have installed firefox as an RPM, I don’t want to use the flatpak yet, because them my password manager will not work right.

After running firefox -p it still crashes. It prints the following in the terminal

ExceptionHandler::GenerateDump cloned child 58107
ExceptionHandler::WaitForContinueSignal waiting for continue signal...
ExceptionHandler::SendContinueSignalToChild sent continue signal to child
4

Its upper case P not lowercase.

5

firefox -P also crashes :frowning:

6

You can try moving your existing firefox setup out of the way.

mv ~/.mozilla ~/old.mozilla

Then see if firefox will start without crashing.

7

unfortunately peanutbutter it still crashes :frowning: I think it has to do with hardware accelleration but I don’t know why as it used to work fine

8

If anyone has the same issue, for me it only crashed on wayland so my temporary solution is:

Change the .desktop entry for firefox (i used main menu) to env GDK_BACKEND=x11 firefox %u. This makes firefox start in x11 mode, which makes it lose some features. But at least it works.