Diễn đàn hỗ trợ Firefox

Crash submitted, ID = 320cc808-4505-4cba-6e0f-9f2c2955d007 Still happens in troubleshoot mode. Still happens with extensions disabled (Ublock origin, Proton Pass) Started happening since Dec. 5, 2025 System is current with all Debian?Ubuntu updates installed (daily refreshes) Linux Kernel 6.8 on Lenovo Yoga i7 (ca. 2022) with Intel i5 & Intel graphics

Hi Mozilla I hav got a problem with Firefox on Kubuntu 24.04.3. Everytime the computer is restarted Firefox crashes the first time it's started. That's not a big problem, starting Firefox again don't take long. But the problems is exceeding. If i start Firefox by clicking a link in a mail in Thunderbird. And Firefox has not yet been started, It crashes, but now it's also invaliding the Task bar on the screen where Firefox was started. Invaliding means that I cannot start apps from that screens taskbar, and the clock has stalled, none of the tools works etc. The only possibility solution I have been able to figure out, is restart (It's like going back to Win 98). Sometimes I am able to start a app from that invalid taskbar. But it's not the one app that i clicked on. Even though I can trigger it via Thunderbird, the invaliding of the taskbar will occur after a while. And I have to restart. I am not sure if this is the right place to post. But Firefox is always involved, but maybe Thunderbird or Ubuntu was the right place? Every time Firefox crashes there is send a crash report to Mozilla, but is has been going on for a while, so i guess that nobody is looking at the crash report. If I use Chromium instead of Firefox I don't see the problem.

With Firefox 144, there is unasked for/unwanted AI introduced. How do I ensure that all AI is completely disabled in my browser? I found a link describing some settings, but want to confirm this will disable ALL AI in the browser. I don't want it, don't trust the privacy/security holes yet to be found and would prefer it was not included in Firefox to begin with. The list I've found is:

• user_pref("browser.ml.chat.enabled", false);
• user_pref("browser.ml.chat.menu", false);
• user_pref("browser.ml.chat.page", false);
• user_pref("browser.ml.chat.shortcuts", false);
• user_pref("browser.ml.chat.sidebar", false);
• user_pref("browser.ml.enable", false);
• user_pref("browser.ml.linkPreview.enabled", false);
• user_pref("browser.ml.linkPreview.optin", false);
• user_pref("browser.ml.modelHubRootUrl", "");

Will this do it? What about:

browser.ml.chat.nimbus

Do I need to clear that field to ensure I don't get some auto opt-in in the future as more and more of this "stuff" is put into the browser?

Why not leave Firefox as a security/privacy conscious browser and put out a separate AI browser (FirefoxML?) for those that are not as concerned. How does Mozilla ensure that no information is leaked through AI from sessions for professionals that must protect physician/patient, attorney/client information or other legally confidential information?

https://support.mozilla.org/en-US/questions/1248171

I saw bunch of threads which suggest to enable "ctrl+tab cycles through tabs in recently used order". It does what I need, but in previous versions I used to press only ctrl+tab. While I was holding ctrl I could iterate over tabs via tab key. After releasing ctrl selected tab was chosen

It differs with current behavior where you press ctrl+tab and after releasing all keys pop up with tabs is still be viewed and you need manual action with space/enter/mouse click to open selected tab

Is there any way to use only ctrl+tab without any manual actions required like it was back in the days where after releasing the control key selected tab is opened?

If I'm not mistaken, between FF146 and FF147 it appears the location of the profile directory has changed. It was:

   /home/<user>/.mozilla/firefox  

and now is

   /home/<user>/.config/mozilla/firefox

Is that correct?

After updating to Firefox 147 from 146, it seems that some areas in page rendering are becoming corrupted.

Using the attached example from https://soundcloud.com/solarstone/tracks, it is possible to see a corrupted song bar. In the other song, where the full bar chart should also appear, there is a black area, which seems like a different kind of corruption where the content is simply not being displayed.

This did not happen in version 146.

Is there anything I can do, or any information I can provide, to help debug this issue?

Thank you.

After many years of using Firefox and then trying other browsers I decided to stick with Firefox now, and immediately I encounter a persistent flaw.

Mainly I browse on chess.com, I mention this because there the thing occurs and I can imagine it is quite a 'complicated' website. Stick with me. I administrate clubs and play chess there so open pages regularly, in new tabs, still generally only three simultaneously.

Every 1 in 5 times the page just gets stuck loading. Only parts appear and the little refresh icon up there doesn't show because the X stays (the one to stop loading the page). This is quite annoying. Simply by refreshing it immediately loads properly. But it is ridiculous to keep having to press F5 every couple of minutes before one can get on. As I also used Beta channel on my win11 machine I figured maybe it's that but after several updates it persisted. Now I am using the Normal channel and a Linux Mint OS and exactly the same keeps happening. I have tried a dozen remedies. Like adding an exception to the enhanced tracking in Firefox and several others and nothing fixed this. Does anyone knows how this happens?

And will Mozilla fix this? Or is it completely at the bottom of priorities because it is site specific?

Thanks for any replies (OS most recent Linux Mint Cinnamon. browser version mint-001 1.0 firefox 147.2) (Happened on Windows 11, Firefox Beta as well)

For some reason, I was unable to verify my account. I even thought I was wrong with my password, but that was not the case. When I use a different browser, Apple does not just ask me for a password but also a key; however, this option was not available on Firefox. With this, I can't log in to my iCloud on my Firefox Linux app.

In Firefox, I have audio and video autoplay blocked globally, and added an exception for one particular website (Discord). However, Discord now only autoplays videos once, but doesn't loop them as it should (they implemented GIFs as videos, but now they don't loop).

Of course this could be interpreted as a bug in Discord's web client. However, there shouldn't be a difference between a website that got an exception and autoplay being globally allowed. Therefore i suspect that there is a bug in firefox where some property, state, or hint is set differently depending on whether a page has been added to exceptions or autoplay is allowed globally.

Is there anything i can do to work around this? I really want an autoplay exception to actually work as expected (the website doesn't need to know that it's special)

Hi there I have the problem that my firefox can save any file or download on my other drives since they arent event show as an option. I did a little research and read that by default in linux for security reason was unable to, but asking in the official forum of my distro (cachyos), they can save thing in other drives with no problems.

So i wanted to know why i dont?, my firefox installation is native at installing the dristro and having all perimission but it cant see my drives except the one is installed to (and where my OS is).

The only thing different i actually do is the folder where my current user info is saved, i moved the files from my user but with the files i had from my old windows session to impor my saved sites, favorites, etc.

Can you help me to be able to save files or images on my other drives?, thank you for time.

Hey folks, just wondering when the Windscribe add‑on will be moved to the MV3 framework. Other browsers already have it at v4.x and I’d love to see Firefox catch up so we can use the new privacy features. Is there an ETA on the review/approval process? TIA

I've been backing up my opened tabs for the past 4 or 5 years with the steps in this legendary post: https://support.mozilla.org/en-US/questions/1257866

But this time it failed me and I don't know why. I just switched from Debian to Linux Mint, put everything up to date, but when I copy the sessions-store folder back into my session folder, as described in the post, nothing happens. I tried restoring only the 2 files listed there, and also dropping them in the general user folder, outside sessions-store, but still nothing. I've also noticed that the sessions-store folder isn't created automatically, even if I open a bunch of new tabs now and close the browser.

I don't even know how to begin troubleshooting this to be honest, this is the first time this method's ever failed me :(

I also saw this post: https://support.mozilla.org/en-US/kb/how-restore-browsing-session-backup But it doesn't help either.

Recently, when I copy and paste an error message to the search box in Firefox and the first word contains a ':', such as when searching for this error message - "MESA-LOADER: failed to open dri: /usr/lib/x86_64-linux-gnu/gbm/dri_gbm.so: cannot open shared object file" - I get the "Open the mesa-loader link with System Handler?" prompt (see screenshot).

I used to be able to copy and paste such an error before into the search box and it would just work but now the browser defaults to thinking you are entering a URL. This could be because when I start typing in the search box, it immediately relocates what I'm typing to the address bar. Maybe this is the behaviour I need to disable? But how and why is it the default?

Help!

Browser details

$ > snap info firefox name: firefox summary: Mozilla Firefox web browser publisher: Mozilla✓ store-url: https://snapcraft.io/firefox contact: https://support.mozilla.org/kb/file-bug-report-or-feature-request-mozilla license: unset description: |

 Firefox is a powerful, extensible web browser with support for modern web application
 technologies.

commands:

 - firefox
 - firefox.geckodriver

snap-id: 3wdHCAVyZEmYsCMFDE9qt92UV8rC8Wdk tracking: latest/stable/ubuntu-24.04 refresh-date: 19 days ago, at 13:56 AEDT channels:

 latest/stable:    144.0.2-1    2025-10-29 (7177) 261MB -
 latest/candidate: 145.0-1      2025-11-04 (7242) 262MB -
 latest/beta:      145.0b9-1    2025-10-31 (7213) 262MB -
 latest/edge:      146.0a1      2025-11-05 (7250) 298MB -
 esr/stable:       140.4.0esr-2 2025-10-14 (7023) 258MB -
 esr/candidate:    140.5.0esr-1 2025-11-05 (7236) 258MB -
 esr/beta:         ↑                                    
 esr/edge:         ↑                                    

installed: 144.0-2 (7084) 261MB -

OS Details

PRETTY_NAME="Ubuntu 24.04.3 LTS" NAME="Ubuntu" VERSION_ID="24.04" VERSION="24.04.3 LTS (Noble Numbat)" VERSION_CODENAME=noble ID=ubuntu ID_LIKE=debian HOME_URL="https://www.ubuntu.com/" SUPPORT_URL="https://help.ubuntu.com/" BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/" PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy" UBUNTU_CODENAME=noble LOGO=ubuntu-logo

Hello all!

I've started having an issue in the last few days, with apparently two separate Firefox installs. A few days ago I was greeted by a fresh, blank install of Firefox and had to set everything up and sign in as I usually would on a fresh system install. Today, however, I somehow managed to launch both of them at once (I don't know how, as I just use the UI shortcut). After closing both fully, I can now only start the "old" one via the shortcut.

OS: Bluefin / Fedora 42.20, Gnome 48.6

According to the list of flatpaks, only one is installed. Unfortunately that's roughly where my knowledge of Linux ends, so I can't troubleshoot this further. Help will be apprecciated, as I don't want to roll a die on which of these will start up every time I reboot.

I'm trying to setup 2fa on my account. It requires sending a code to my email which I then use to verify. These codes consistently are sent outside of the time window and as a result expired. I've added accounts@firefox.com to my contacts, and I've tried this on firefox desktop and firefox mobile on an iphone, and both produce the same results.

I'm on a gmail account and gmail flags these emails as suspicious despite being added as a contact, which likely means they are poorly formatted. Despite this flag, they are still sent to my inbox when they finally arrive.

This is incredibly frustrating as this is a service provided by basically every company and yet I have never seen it perform this poorly as it has with firefox.