Firefox Community Forum

YouTube videos are playing choppily in Firefox. The video frequently stutters/freezes or does not play smoothly, even when the same videos work normally in another browser. I have restarted Firefox and my device, but the problem continues. I would like help identifying whether the cause is hardware acceleration, Firefox extensions, graphics drivers, or another Firefox setting, and I would appreciate step-by-step troubleshooting instructions.

I run normal firefox on linux. Fully up-to-date. Every time I quit the app, it reverts to a version of my profile from a month ago, and loads all the tabs I had open then, and then receives all the tabs that I sent to the device in the interim (~1 month). As I speak, it just caught the 60 or 70 tabs in this window.

I tried changing the name of my profile folder to randomstring.defaultOLD and changed one of the backups to randomstring.default. This didn't change the behavior. I'm still stuck in the loop. I saved my tabs with onetab, because firefox isn't remembering my session anymore. I thought it was something to do with updates, like it only loses its mind upon updates, but that's not true. It thinks it's updating firefox EVERY TIME, because the one time it's loading to 1 month ago it was updating, but I'm 100% sure there are no updates to firefox in my linux. It's just hallucinating.

The articles on restoring from backup are outdated. They say to use an html file. There is no html file. It's just folders for profiles, not html files. HELP!

I've tried several times with different updates to use the AI-enhanced tab groups, and it has never given me actual useful suggestions of group names. It always shows me the most generic of names and chooses almost randomly what tabs to group. This is a thing that AI should be good for, but it looks like it's unaware of what is the content of my opened tabs.

Is this feature improving or I can disable it and stop it from consuming my CPU?

Can not change default Firefox home page in settings. I am 78 years old & know nothing about computers. Thank You

Moderator note: This question has been edited to correct the formatting and add OS info.

I'm not a tech savvy user. Although I am using a personal network could Mozilla be interfering with the link of my Linux computer to the HP printer? Any suggestions on how to remedy this?

I have webpage (Home Assistant instance) on my local network on which I would like to use microphone (for Assistant functionality). Page is completely local, i.e. not visible from Internet. My issue is I can't force Firefox to allow microphone access on this page. I've tried messing with media.devices.insecure.enabled config, but it didn't help. Is there any way to add such page to some whitelist to allow microphone access? From what I gathered Chromium-based browser provides "--unsafely-treat-insecure-origin-as-secure=..." option but I didn't find anything similar for Firefox. I know I could expose my server to outside network and get SSL certificate (from Lets Encrypt) to make it work, but exposing server to Internet just to get local microphone access somehow doesn't feel like a more secure solution. I could probably also issue self-singed certificate but dealing with that also seems at least annoying.

I have linux LMSDE7 Mint, Firefox will not sync. I click on the 3 top right corner lines, sign into Mozzilla, the bookmarks have not synced. Then if I go back to the same lines, it has still the "sign in" field, clicking has no reaction. It seems that mozilla is not signing in I have an other linux version, winux, there I have no problems, it syncs ok.

In the past weeks Mozilla VPN is not working in Italy. As of today, I cannot connect to any of Mozilla VPN servers. Everything fails, ping is stuck. I am connecting via Vodafone Italy as my ISP.

After I received a notification of a suspicious sign in from Brazil I attempted to change my password.

All went fine until after I received and entered the 6 digit OTC. When I clicked "Submit".... nothing. I tried to reset the password in a Private Window with the same lack of success. I can request the code, receive it via email, and enter it but am unable to submit it.

My account was accessed again from Jakarta and it now appears that the password was changed. On the Profile page it notes that the password was created 08/13/2026.

This is Firefox on Linux Mint 21.3

Hello,

I am trying to set up firefox to add a passkey to sign in into bitwarden.

In bitwarden I added my Yubico key in order sign in into my account. Unfortunately, when I try to log back into my account with my Yubico key it doesn't work.

Does firefox support passkey ?

Thank you very much in advance for any help.

I get the most generic error when trying to set up a backup password. This happens for any kind of password I try to input, including the same one used in my Mozilla account. This happens whether the password is simple or complex, regardless of length or characters.

I recently switched from Debian to Fedora Workstation. Everything works fine, even better under Fedora, except Firefox. There is this quirk, where whenever I wake up my system from suspension, and I try to search something, Firefox just shows a loading sign as if it was loading the page, but I see via the inspect tool that it isn't even sending any HTTPS requests to the server. I know this problem specifically affects Firefox, because other programs that require an internet connection, such as fetching mail via Thunderbird or installing packages via DNF work completely fine. In order to get Firefox to actually work, I have to completely close and reopen the application, forcing me to lose unsaved work in some cases. I've tried everything, from restarting my machine to waiting to see if it will be patched in a future update, but nothing has gotten better. Please help me. Thank you in advance.

Anyone succeed with running Firefox in headless mode under Ubuntu?

I tried:

firefox --headless --safe-mode -P headless https://quan.hoabinh.vn

but got this error:

[12545] Sandbox: CanCreateUserNamespace() unshare(CLONE_NEWPID): EPERM

• • • You are running in headless mode.

[GFX1-]: RenderCompositorSWGL failed mapping default framebuffer, no dt

I installed Firefox as from "https://packages.mozilla.org/apt" repo.