Firefox Community Forum

I'm using Kubuntu 24.04. I saw it more than once. Firefox is frozen, no WiFi for example, and I have to kill it via terminal. After that it is not possible to retrieve the session (3 or 4 tab groups plus ~20 tabs)

thank you for any help.

In a thread discussion about the flag, "browser.tabs.unloadOnLowMemory" dated 23-Nov-2022 (https://news.ycombinator.com/item?id=33706117) it was mentioned that we've disabled tab unloading on Linux because low-memory detection just didn't work.

Has the issue been fixed? Does the low-memory detection work in Linux? Can it be enabled now?

Does it get triggered when SWAP is being used? Or when system free RAM falls say to about 25% of total physical RAM?

In 2024-25 Microsoft Edge gained the ability to limit the usage of physical RAM that the processes uses. Once that limit is reached tabs are put to sleep or are unloaded. So a user of Microsoft Edge could restrict the memory usage to say 1GB or 2GB or 3GB and so on till the maximum available physical RAM.

Does Firefox have such an ability? Is there some flag or settings in about:config that can be enabled for a similar feature to be used? Does Firefox have ability to put tabs to sleep once SWAP is started to be used? Is there some flag or settings in about:config that can be enabled for a similar feature to be used?

If none of one of the above is not available with Firefox then will Firefox add this feature as part of the browser in the future?

I have at least one question on the support forum which has never been answered. So I went to Bugzilla, and discovered dozens of YouTube issues under the Open/Unconfirmed status.

I can reproduce my problems. I'm sure others can reproduce their problems. Nothing is done. NOT EVEN admitting there is a problem.

If I can't use YouTube on Firefox (I can't), then why am I using FF? It is one of the biggest sites on all of the internet. But FF apparently doesn't care if it doesn't work.

What. Is. Going. On?

(See the attached image... the big blank space is where the video should display)

I am switching from firefox to firefox-esr. Version 147.0.3 to 140.7.0esr, start firefox with --allow-downgrade which mostly works. What does not is the "Home default" page, it is blank and can not even be configured to what it was because the settings page is also blank, nothing below "choose what content ...".

I have done this on 4 machines now with same failure for the home page. settings. My previous workaround was new profile and import data so the setting page is therein ESR. This is a far harder than it should be there being no single export-import. I had to export import history with a third party plugin and cookies the only method [I found] was to copy the sqlite file. Others like password export-import are fragmented.

I have an issue where the following operations with the "new" profile manager don't work: - setting up a new profile (about:newprofile in the new profile is just blank) (a new profile gets created though) - deleting a profile (about:newprofile is just blank) - editing any profile that is not the original profile (about:editprofile is just blank) (works with the original profile) - the select profile interface from the account or menu button is blank when opening it from any profile that is not the original profile

What works tho is calling about:profilemanager from any profile. From there any profile can be selected and switched to.

I'm using the Bazzite (Linux distro that is Fedora based). I'm fairly new to Linux so that could be a issue, the problem was there from the get-go though and since Firefox was preinstalled I don't believe I could've messed up much.

Firefox version is 147.0.4 Bazzite version is 43.20260211.0 (Kinoite)

Reboot doesn't fix these issues. Uninstalled Firefox with deleting user data, installed it again and same behavior appears again.

I also tried installing a Firefox fork (Waterfox). It had the same issues.

I would appreciate any help and would be willing to share more detailed date if it helps somebody help me.

The attached screenshots mostly show the UI that is not working as expected.

Why isn't there a simple means to remove/prevent searches for the address bar, using config doesn't work.

I've used Firefox for over twenty years, this annoyance will end that and force a move to Brave.

I run Firefox on Fedora Linux (Silverblue). For several releases I've noticed that the reader mode only displays the Close Reader View, Text and Layout, and Theme options and nothing else i.e. no content.

When I run it in troubleshooting mode, it works. I've tried disabling all my extensions, deleting all my extensions,restoring the browser to default settings but nothing makes a difference. I'm always on the latest release (currently 147.0.3). I currently have multiple profiles, but it didn't work even before I rebuilt them. I'm out of ideas.

Any help is appreciated

Environment - OS: Omarchy - File manager: Nautilus (running as --gapplication-service) - Desktop portals: xdg-desktop-portal + xdg-desktop-portal-hyprland (+ gtk fallback) Firefox: latest stable from Arch repositories

Observations Only one Firefox process is running (pgrep -a firefox). Only one Nautilus process is running, but it receives two open requests, resulting in two windows. The issue does not occur in Chromium/Chrome, which opens only one window. Running xdg-open <file> manually opens one Nautilus window.

Portal logs show GTK being chosen as last-resort fallback, but system-wide XDG configuration appears correct.

Question

Is this a known Wayland/portal bug in Firefox? Are there recommended debugging flags or patches to trace the duplicate launch request?