Firefox Community Forum

They play for a couple of seconds, then the panel they are playing in goes black. They used to work a month or two ago. Videos play fine in YouTube. They also play fine in apps like VideoPlayer and VLC. They play fine in Chromium based browsers Opera, Brave and Vivaldi. My graphics card requires switching acceleration off. I can’t find a switch for that in Firefox.

Problem Videos start playing, then after a few seconds the video panel turns black. Audio may continue. Refreshing does not help.

Environment

   OS: Fedora Linux 43
   Firefox 147.0.1 (also tested Firefox Flatpak)
   Display server: Wayland and X11 (both tested)
   Hardware acceleration: on and off (tested)
   Media Source Extensions: enabled (disabling MSE triggers an “unsupported device” error)

What works

   BBC News videos play correctly in Chromium-based browsers (Brave, Vivaldi)
   Videos play correctly in mpv/VLC
   Other video sites (e.g., YouTube) play correctly in Firefox

What I’ve tried in Firefox

   Disabling hardware acceleration
   Disabling VA-API
   Disabling WebRender
   Disabling RDD sandbox
   Running Firefox under X11
   Using the Firefox Flatpak build

None of these measures help. This suggests the issue is related to Firefox’s interaction with BBC’s player on Linux. Has anyone else seen this, or is there a known workaround?

I am unable to sign in to my yahoo mail account. It gives me a fault that "something went wrong, please try another device". I can use brave as my browser and sign in with no problem but not with firefox. Any idea why?

NB - For the past half a year I have to sometimes right click to interact with them, anyway

Effectively, I will interact with the extension at the most basic, normal level on something that has interactive elements like a dropdown menu, or basic options.

I will click / right click on the icon and the highlight will appear, then that's it ... the browser then crashes and does not recover. :(

What's worse is that I have to Force Quit and when I restart there is no crash report to send to Moz.

I am just wondering if other Linux users have experienced similar issues.

The attached image is taken at the moment before the 'Force Quit' dialogue opens up in Debian 12 Gnome (Wayland) ...

I have Hardware Acceleration on.

I am about to start testing with it off, but I work from the browser, and do not want performance compromises. So that is (at best) a work-around, and certainly is not a fix.

I'm on version 147.0.2 (64-bit) which would appear to be from the Mozilla Firefox Debian Package mozilla-deb - 1.0 install/repo/whatever ... and the PC specs are: Processor: Intel(R) Core(TM) i7-10850H CPU @ 2.70GHz Memory: 32705MB (11893MB used) Resolution: 7680x2358 pixels OpenGL Renderer: Quadro RTX 3000/PCIe/SSE2

These are my media. prefs ... but ... I doubt that it is relevant: media.ffmpeg.allow-openh264 true media.ffmpeg.customized-buffer-allocation true media.ffmpeg.disable-software-fallback false media.ffmpeg.enabled true media.ffmpeg.encoder.cpu-used 7 media.ffmpeg.encoder.enabled true media.ffmpeg.encoder.quantizer-max 35 media.ffmpeg.encoder.quantizer-min 10 media.ffmpeg.vaapi.force-surface-zero-copy 2

so i had a bunch of bookmarks saved, and when i logged in today they are gone, replaced with a message For quick access, place your bookmarks here on the bookmarks toolbar. manage bookmarks (link)

so when I use the link I cant restore bookmarks, cant seem to save new bookmarks, and the FAQ section isnt helping, some of the stps they talk about are greyed out in my version, so I cant click on them etc.

Is this a windows 10 issue? Am I the only one having this problem?

Error message: the bookmarks and history system will no be functional because one of Firefox's files is in use by another application. Some security software can cause this problem.

I tried following the directions in "learn more" but to no avail. Please help this senior citizen get his bookmarks back! Thank you.

Hi,

Unable to copy text from Firefox browser. This includes copying from the body of a webpage, webpage URL in the address bar and "about:support" Troubleshooting information.

Behaviour: When copying the selected text, nothing is pasted. When cutting the text, (text is removed where possible ie address bar, or text fields), nothing is pasted.

I am able to paste from a different program into Firefox ie from Notepad to Firefox.

Attempted fix: I have tried refreshing Firefox. Problem persists.

Please assist.

I manually added shortcuts to my home screen, but everytime I open the browser, the system automatically has added shortcuts I don't want. Also, when I delete these unwanted shortcuts, another unwanted one appears.

how can I stop this from happening?

Hi All:

I just got a new laptop and so I am getting everything set up the way that I like it. I have come across a problem with my sidebar though. I like to keep my bookmarks up all the time, but I want them to not be too wide and take up a lot of my screen. On this new computer, there's an addition 5 cms or so of white space at the far left of the tool bar. It had different buttons on it up at the top (one of them had something to do with AI) and a little gear down at the bottom of the space. I was able to remove all of the buttons up at the top, but I can't seem to hide the whole thing. I just want to see my bookmarks, without that extra customization sidebar. Is there a way to hide the spot highlighted in pink, but still have the bookmarks visible?

I have an account for standard support release versions, I am now using extended support release version 140.7.0 and a popup notification keeps nagging me to make a new profile. How do I do this?

Hello,

I'm unable to find the sync bookmarks,

I'm trying for a long time, in my iPhone and MacBook, both Apps are the latest, using the same email and the Bookmarks do not show in any of the devises.

Can you please help me?

I won't show my account information but when I try to access Amtrak's Guest Rewards site it goes into a loop. First it asks for username & password and accepts that with no problem. Then it asks for the code it sends to my cell phone and accepts that. And then it just keeps reloading various pages until I kill it. This is the error message shown in the log, it's repeated over and over:

NS_ERROR_ILLEGAL_VALUE: Component returned failure code: 0x80070057 (NS_ERROR_ILLEGAL_VALUE) [nsIFaviconService.replaceFaviconDataFromDataURL]

   loadFavicon resource:///modules/PlacesUIUtils.sys.mjs:220
   loadFavicon resource:///modules/PlacesUIUtils.sys.mjs:647
   setIconFromLink resource:///actors/LinkHandlerParent.sys.mjs:139
   receiveMessage resource:///actors/LinkHandlerParent.sys.mjs:60

LinkHandlerParent.sys.mjs:148:17

I'm running under Mac OS 10.13.6 The site loads fine when I use Safari (version 13.1.2)

Thanks

hello. my name is Andrew. im learning the language toki pona. great language! however, it does not currently have support in Unicode.

as a workaround to use this language online, people have been downloading a font called nasin nanpa, and adding it to firefox's font fallback system in the about:config settings, and using the fonts UCSUR characters, like these 󱥬, 󱥂​󱤴​󱤧​󱤑​󱦐󱤄󱤽󱤧󱤊󱥵󱦑.

[specifically, the font uses codepoints in the Private Use Area because the language's script is not yet in Unicode. ]

the changes are to these settings.

font.name-list.cursive.x-western font.name-list.monospace.x-western font.name-list.sans-serif.x-western font.name-list.serif.x-western

recently, this system has stopped working. this change breaks multiple websites, including many discord community's that used the font to talk online in toki pona!

it also presumably breaks other fallback scenarios. now im guessing that this has not been noticed as most fonts support every commonly used character, making this feature rather obscure. however i really would love this to be fixed, and so would the large toki pona community!

to see what i mean better, please see the below images. the last image shows a website that loads this font on it's own, showing what the others should look like.

I recently purchased a new HP laptop to replace my old laptop. On the old laptop I used Firefox as my default browser. I do not care for Chrome or Microsoft Edge. On my old computer I had installed Trend Micro Toolbar on my Firefox browser and loved the protection it gave me on the web. However, since I purchased my new HP laptop I have been unsuccessful adding Trend Micro Toolbar, so I have had to settle for using Chrome. Can you please advise me how to add Trend Micro Toolbar to my Firefox browser?

Respectfully,

Daniel Hopper hoppersx4@gmail.com

Hello,

When I try to visit a specific journal site that requires authentication, the browser automatically redirects me to an authentication page that I have used before. This is very annoying because every time I click a link to the journal, I’m sent to the other portal and can’t access the article. I want to stress that I haven’t installed any add‑on that would cause this redirection. I think I did that myself manually but I have no idea how. I’ve already deleted the cookies for both sites, but nothing has changed. I hope that makes sense, it’s a bit difficult to explain.

I'm using firefox 147.0, on mac Tahoe 26.2.

Thanks for the help !

I've been using Firefox on Linux since it was Nautilus. Currently running EasyOS Linux Daedalus and Excalibur on different Lenovo ThinkCentre Tiny Core i3-8100t boxes and different drives: A good Samsung SSD and two good flashdrives. 32G new RAM installed on each box. I've been using these boxes for over a year. For the last month or so, ever since updating to v. 146 my tabs have been crashing like crazy! I don't normally have more than 10 tabs open at once. But now, as soon as I open a 5th tab it crashes.

I'm running Top to watch CPU and RAM usage. I see nothing unusual. I've rebooted. Disabled all add-ons and run in Troubleshoot mode. Tabs still crash. My only add-ons are uBlock Origin, Temporary Containers and Dark Mode. It happens whether I have hardware acceleration turned on or off. I don't know what else to try. Here are my most recent crash reports. I hope you can figure out the problem. Thank you so much!

Submitted Crash Reports Report ID Date Submitted bp-570147ea-4ab1-4543-828a-d5b7d0260202 2/2/26, 12:04 PM View bp-6422cca3-a458-4b68-9d70-e4acc0260202 2/2/26, 12:00 PM View bp-6be58295-46a1-411d-a241-3f85b0260202 2/2/26, 2:52 AM View bp-afa98aeb-f15f-418b-abe5-06da80260202 2/1/26, 10:03 PM View bp-9c7632d5-db44-47e3-babf-a2bd70260202 2/1/26, 8:28 PM View bp-95d245df-f31d-4512-80bd-f0d180260202 2/1/26, 8:18 PM View bp-85752e77-2bb1-4f13-a2b5-68fdb0260202 2/1/26, 7:24 PM View bp-ae5d263d-608b-485e-867e-2aa190260202 2/1/26, 7:21 PM View bp-9efef3a5-b1ef-4279-b055-fa4760260202 2/1/26, 7:00 PM View bp-5b05d78e-26d2-4896-bbba-bea6a0260202 2/1/26, 6:58 PM View bp-acbd8424-5545-4e40-afbb-93ca90260201 2/1/26, 12:33 PM View bp-1415051a-9824-44d7-8f87-8fd270260124 1/24/26, 8:47 AM View bp-9c50b2a5-27a7-45f6-a65c-e45070260124 1/24/26, 8:47 AM View bp-28e5e55f-952f-45a9-9c99-44e300260124 1/23/26, 11:37 PM View bp-3b509a00-0a8f-4a67-94ec-fad500260124 1/23/26, 11:37 PM View bp-65b6d54d-cbf7-4045-b189-019fb0260124 1/23/26, 11:23 PM View bp-a5e110b3-6d7d-4aa4-b8a7-439f10260124 1/23/26, 9:32 PM View bp-d74bf5ce-fdcd-41e4-b2be-6ed990260124 1/23/26, 9:12 PM View bp-cebf5062-d3aa-4653-9d64-2ad0a0260124 1/23/26, 6:57 PM View bp-1bcd2f2e-2136-412b-8919-ed96c0260123 1/23/26, 5:54 PM View bp-50d66365-399c-464a-b6f4-8a3230260123 1/23/26, 5:32 PM View bp-95b5ab2b-35d4-4867-8f33-ba1b10260123 1/23/26, 5:26 PM View bp-b7c48b83-02cd-435f-b466-dab650260123 1/23/26, 5:26 PM View bp-1eccdf1e-184f-4cd8-8e1f-1d6cb0260123 1/23/26, 3:33 PM View bp-22b3fe80-9420-403b-84a4-4840c0260123 1/23/26, 12:26 PM View bp-aa6baadc-fa01-4c42-90d5-5d4120260202 2/2/26, 12:07 PM View bp-9cf8b3be-8be4-4fd2-a812-444540260202 2/2/26, 12:07 PM View bp-22f8081d-7052-4962-a699-66b600260202 2/2/26, 12:07 PM View

Hi, I've recently discovered that Firefox replaces the % with underscore while downloading file.

I've read that question: https://support.mozilla.org/fr/questions/1439267 but there is no answer.

Is there a way to prevent that? I use a online tool I've made myself and the % is used as a separator.

When I access the website of UGC ( https://www.ugc.fr/ ) the access page opens up but immediately freezes: the screen luminosity decreases and the pointer cease to function: I cannot acces any of the options: select movies on show, select cinema programmes or schedule, open my UGC account to reserve performances ... Nothing works ... I have tried to reduceprotecton, etc as sugested on Forum and other suggestions: nothing works. I have no problem at all when I open the same website with Opera or with Microsoft Edge ... Why it does not work under Firefox puzzles me. Can you do something about it ? I use Firefox as my defaut internet access without problems for everything else ! This is really strange and most annoying. Thanks for your help.

How do you avoid/deal with Firefox website incompatibilities? This happened on consecutive visits to two different websites today before I posted here.

In the first one, I disabled Ublock, cleared cache and cookies, and the site loaded, I then enabled Ublock with no error prompted.

Then I got a tab crash on Youtube. I wouldn't call tab crashes a daily occurrence for me, but I'm accustomed to them

Gmail tab crash just now. It just happened now with another website tab crash. i'm reverting back to 147.01

Is there any way to get the root of this. The only recent changes I can think of are browser (147.0.2 yesterday) and addon updates. Should I post my list of addons?