Firefox Community Forum

On Arch Linux with the latest version of Firefox, the interface elements turn black due to a theme loading failure. 'This issue persists even when using the default theme.

Going to Settings and disabling the theme (which automatically falls back to another theme) resolves the problem.Re‑enabling the problematic theme does not reproduce it immediately. However, the issue reappears after restarting Firefox.

System Info: OS Arch Linux x86_64

├   KER  Linux 7.1.3-arch1-2
├   PAK  1537
├   AGE  34 days
└   USR  chen-shuhan@archlinux

WM niri 26.04 (Wayland)

├   SHE  fish 4.8.0
├   TER  kitty 0.47.4
└   TFO  JetBrainsMapleMono-Regular (13.5pt)

Firefuxxed was refusing to open new tabs so I shut it down and restarted it (always fixes it) and all my pinned and open tabs were gone with no way to recover them, it took me half an hour to manually restore the pinned ones one by one but not all of them as I cannot remember all of them let alone all the open tabs I had (hours of research gone down the toilet).

There should be a way to backup and restore pinned and open tabs so this doesn't happen, the history option does nothing.

OS: Linux Mint 22 fresh install from a week ago Previous version of Firefuxxed updated after this shamossel.

I recently tried to connect to two different meeting sites. Both times I got a pop-up noting (correctly) that camera and microphone are blocked. I'm able to click to enable the microphone but I never get the option to enable the camera.

I tried going to Settings>Security&Privacy>Camera but that only allows me to remove previously-enabled websites.

Clicking on the settings button in the address bar shows audio and recording settings but no camera.

What am I doing wrong?

Fedora 42 Firefox 145.0

I have HDR working in Proton games and mpv fine (using Plasma 6.4 / Wayland)

I enabled HDR in Firefox (gfx.wayland.hdr), and HDR content works in YouTube fine ( looks amazing!) however.. I have an issue in that all non HDR content doesn’t show any video (I have sound) just a green sceen (see screen shot) including all ads.

Any idea how to work round this ?

I have AMD 7800 GPU .

Cheers

hi,

  I have an old PC with this CPU:

Architecture: i686

 CPU op-mode(s):         32-bit
 Address sizes:          34 bits physical, 32 bits virtual
 Byte Order:             Little Endian

CPU(s): 1

 On-line CPU(s) list:    0

Vendor ID: AuthenticAMD

 BIOS Vendor ID:         AMD                                             
 Model name:             AMD Sempron(tm) 2400+
   BIOS Model name:      AMD Sempron(tm) 2400+                             CPU @ 1.6GHz
   BIOS CPU family:      29
   CPU family:           6
   Model:                8
   Thread(s) per core:   1
   Core(s) per socket:   1
   Socket(s):            1
   Stepping:             1
   BogoMIPS:             3333.66
   Flags:                fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat p
                         se36 mmx fxsr sse syscall mp mmxext 3dnowext 3dnow cpuid 3dnowprefe
                         tch vmmcall

Caches (sum of all):

 L1d:                    64 KiB (1 instance)
 L1i:                    64 KiB (1 instance)
 L2:                     256 KiB (1 instance)

Vulnerabilities:

 Gather data sampling:   Not affected
 Itlb multihit:          Not affected
 L1tf:                   Not affected
 Mds:                    Not affected
 Meltdown:               Not affected
 Mmio stale data:        Not affected
 Reg file data sampling: Not affected
 Retbleed:               Not affected
 Spec rstack overflow:   Not affected
 Spec store bypass:      Vulnerable
 Spectre v1:             Mitigation; usercopy/swapgs barriers and __user pointer sanitizatio
                         n
 Spectre v2:             Mitigation; Retpolines; STIBP disabled; RSB filling; PBRSB-eIBRS No
                         t affected; BHI Not affected
 Srbds:                  Not affected
 Tsx async abort:        Not affected

in some linux (arch 32 bit) I have problem executing firefox, Is there a version for CPU without request from SSE3 Flag?

thanks

I am experiencing an issue where Google.com (other google domains work fine) will not load in Firefox, resulting in an infinite loading loop. Other browsers on the same system (Brave) work fine.

Here are the steps I have already tried:

Reinstalled Firefox completely

Removed Firefox via sudo apt remove --purge firefox -y

Cleared all user profiles and caches: ~/.mozilla/firefox, ~/.cache/mozilla, ~/.config/Mozilla

Reinstalled via Flatpak

Tested network connectivity outside Firefox

curl google.com works correctly

DNS resolution works via getent hosts google.com in the host system

Checked proxy settings

Ensured “No proxy” is selected in Firefox → did not resolve the issue

Tested in Safe Mode (disabling extensions)

Problem persists, so not caused by extensions

Tried disabling IPv6 inside Firefox

network.dns.disableIPv6 set to true → no effect

Cleared DNS cache inside Firefox

about:networking#dns → clicked “Clear DNS Cache” → no effect

Disabled DNS-over-HTTPS (Secure DNS)

about:preferences#privacy → “Use secure DNS” → disabled → no effect

Disabled HTTP/3 (QUIC)

network.http.http3.enabled set to false → no effect

Verified Flatpak network permissions

flatpak info --show-permissions org.mozilla.firefox shows network access allowed

Inside the Flatpak shell:

flatpak run --command=sh org.mozilla.firefox getent hosts google.com

→ returns only IPv6 address: 2800:3f0:4001:839::200e google.com

I have used Firefox since version 1.5 and have loved it and the community since. However, since finally scrapping Windows and switching completely to linux, Firefox has been frequently troublesome with random crashes. The crashes occur on any website I may be on and for seemingly no reason. It happens when I'm in the middle of browsing a page, just opened a new tab, or even when Firefox is simply open and I'm active on another open application.

Environment is as follows:

OS: Zorin OS 18 (Latest patches) (Based on Ubuntu) Mobo: Asus Crosshair VI Hero (Latest available BIOS) CPU: Ryzen 9 5900XT GPU: EVGA GeForce RTX 3080 XC Gaming (10GB) Ram: 8GBx4 G.Skill TridentZ RGB DDR4 (3200) Sys Drive: Samsung 970Evo M.2 Nvme 500GB

Firefox is installed via Flatpack through the built in app store in Zorin OS.

The crashes will sometimes be constant as well. Such as when it crashes, crash reporter comes up, then I click "Restart Firefox" and the second I see the window, it crashes again. This has been a constant problem though at random times ever since I switched back to Linux about 5 months ago.

Any help would be greatly appreciated. I don't want to have to change my primary browser from one that I am generally so happy with, and is also the browser that I recommend to everyone.

I don't know if this ever worked in FF, since I've been on Chrome a while. I tried canvas.toBlob() in FF without a solution.

The behavior is the same whether the served image is jpg or webp. A Servlet delivers the image data, here in webp:

          response.setHeader("Content-Type", "image/webp");

On page, I use a canvas thus => see '// FIREFOX'

     var canvas = document.createElement( 'canvas' );
     canvas.width = width;
     canvas.height = avail_height;
     var context = canvas.getContext( '2d' );
     context.drawImage( imgsrc, 0, 0, width, avail_height);
     context.lineWidth = 150;

     // FIREFOX: canvas.toDataURL('image/jpeg')=black, png,webp,default=transparent
     img.src = canvas.toDataURL('image/jpeg');

     img.onmousedown = disableDragging; // for FF
     img.style.opacity = "1.0";
     console.log('setImg ok');

Inspecting a black jpeg:

        data:image/jpeg;base64,...

Thanks!

I am the developer of FastF1, an open source Python package for downloading and analyzing Formula 1 race results, timing data and telemetry. The package is widely used in the fan community for independent analysis of results. For some advanced features, the addon requires users to authenticate with their Formula1/F1TV account. Since their services don't have an open login API, a companion addon is required to allow users to sign in using their browser and the official website.

I have just noticed that my developer account has been banned and the addon was blocked in Firefox. I have not received any email about this and don't know why exactly this decision was made. I'd like appeal this and reinstate my account and the addon, but I don't know how to proceed from here.

FastF1 and the companion addon are fully open source and intend no harm to users. https://github.com/theOehrly/Fast-F1 https://github.com/theOehrly/fastf1-companion

I hope this problem can be resolved.

For the last 2 weeks I started having problems with Firefox working consistently. Sometimes only tabs crash, sometimes Firefox crashes. It is not tied to any actions, a tab can crash even if you don't perform any actions in the browser. I have tried clean install on Fedora and Vanilla OS, native and Flatpak packages. The result is always the same - tabs or Firefox crashes every few minutes.

Sometimes drag functionality stops working. I can't grab a tab to move it to another position or to a new window. (Holding left click on the tab and moving the cursor does nothing). Also, re-merging the tab with another firefox window stops working. (Dragging a tab to a firefox window from another firefox window doesn't merge them. It does nothing) I can right click on the tab and select Move to move it to a new window but dragging stops working. I have to close Firefox and start it again (sometimes twice), then dragging starts working again. This happens multiple times a day. I am on Linux Mint and the version is 126.0 (64-bit). This problematic behavior has only recently began.

Hi,

I discovered today that the installation of Firefox I have has modified some emoji, like the flag of Switzerland has been replaced with the one from Sark. See the screenshot looking at the same website with Firefox on the left, and Brave on the right:

There's a big mess in the flags' emojis apparently looking at a page showing all the countries. See second screenshot.

After all of those years, am I witnessing now that FF literally failing?

How could it become mysterious by that it lets user's location leaked to github even though: - third-party HiFi company VPN is active and in OpenVPN UDP/TCP, Wireguard, IPv6 On/Off, etc... - No bookmark to corresponding website - Cache and website data were so-called cleaned, - Other browsers don't give that symptom, only FF - No related plugin, out of only 3

it's impossible to find out how it lends to the language and region query of this website every time after cleaning. Is FF getting closed app?

Is that a no-way-to-explain effect of language models' evolution is exponentially higher in every 4 months after two years?

Would like to test nightly builds of Firefox - how best to get started?

I am a user of Ubuntu and interested in testing the Firefox Nightly via snapstore.

Any pointers helpful.

Please forgive me if this question was already answered and that I might have accidentally overlooked that answer.

I'm running Firefox 144.0 (64-bit) under Debian 13 (linux).

I want to configure Firefox to never restore any previous session when it starts up, irrespective of how Firefox was last exited.

Even if a running Firefox session was externally killed via some sort of system command or because of a reboot, I never, never, never, never, never, never, never, NEVER (!!!) want it to restart in any previous session.

I ALWAYS (!!!) want Firefox to launch with its default start page, no matter what.

I tried all of the suggestions that I have found on line about how this might be accomplished, but with each one of them, there are cases where the previous session was restored.

I repeat, I do NOT (!!!) EVER (!!!) want the previous session to be restored, under any circumstances.

Is there a way to accomplish this?

Thank you in advance for any suggestions, and again, please accept my apology if this has been answered and I overlooked that answer.

I am on endeavourOS (linux). Whenever I try to upload images for a profile picture to sites like youtube or X, the image becomes corrupted and doesn't upload correctly. It did this with whatsapp too and I had to use a separate app for it. Other posts said that disabling "privacy.resistFingerprinting" would fix it, but it's already disabled.

Attached below are an example of this bug and the contents of this image when viewed on a text editor.

Hi. I was just looking at Google Photos on both Firefox and Chrome. Chrome had a bigger picture because the window had only the tabs bar and the address bar, and Firefox has an additional title bar. I was wondering if it would be possible to remove the title bar so the picture on both browsers were the same size?

I have CentOS Stream release 8 on my laptop and desktop, with firefox-115.11.0-1.el8.x86_64

If I connect to some sites, such as signin.costco.com, www.tesla.com/modely, www.airindia.com, www.meijer.com, I get errors such as You don't have permission to access "http://www.tesla.com/modely" on this server. Reference #18.71951eb8.1774502305.1a7c7680 https://errors.edgesuite.net/18.71951eb8.1774502305.1a7c7680 You don't have permission to access "http://www.airindia.com/" on this server. Reference #18.c50e2017.1774501671.2dadbdb4 https://errors.edgesuite.net/18.c50e2017.1774501671.2dadbdb4

The error appears invariant of my IP address (different IPv4 addresses after rebooting my router, or an IPv6 address via a proxy). I have Firefox 60.7.2esr and 78.5.0esr on an older machine. Those sometimes work to some of these sites, but don't support all the site functionality, e.g. I can't actually login to Costco. www.tesla.com/modely works in 78.5.0esr. The Firefox on my Android tablet works for tesla; I haven't checked all the other sites. In conversation with my ISP (Starlink) customer service AI, I have tried deleting cookies and disabling plugins (only H264 and Widevine) with no effect. It suggests there is a problem with Akamai fingerprinting the browser.

I get edgesuite errors using Lynx or elinkx or curl also

I'm a beta update channel user, so this may not reflect what 'normal' users are seeing. I use Firefox in Linux, debian v13, so normal people that are using Windows or MacOS also might not see the changes I'm asking about? -- I have no way of knowing.

Anyway: in FF v152.0b6, the "Connection Settings" area seems to have disappeared entirely from the settings menu. I used this area of the settings frequently.

The ability to set proxy still exists in the about:config settings area. In the future, will about:config be the standard place to go for people that want to manually set (or toggle) an http/https proxy?

Thanks for reading, and thanks to all the Volunteers who make this place and Mozilla software function. I use your stuff all day, every day, and my life is better because of it.