Firefox Support Forum

I've got about 10 bookmarks with links to support pages each about adjusting specific about:config setting to my needs. My job also requires me to change systems lots of times, from Mac to windows to Linux. Is there an easy way I can save my personal about:config changes to a file for easy import on other systems?

Thanks

Hi,

I hope you are well.

I have set up 11 custom devices that max the min and max sizes of bootstrap grid system (xs-min-360w, xs-max-575, etc) to aid me with checking my website on various screen sizes. Is there anyway to export this list or better still to synch them with my Firefox account so I don't lose these settings?

I am using Firefox Developer Edition (101.0b6 (64-bit)) on Ubuntu 20.04.

Many thanks Kaz

I'm not able to get hardware accelerated video decode working on Firefox developer 101.0b7 on Arch linux X11 with VA-API. This is verified by a lack of Video activity in intel-gpu-top

There is also no obvious error message. On youtube videos I sometimes see

[2022-05-16T17:36:32Z ERROR mp4parse] Found 2 nul bytes in "\u{0}\u{0}" [2022-05-16T17:36:32Z ERROR mp4parse] Found 2 nul bytes in "\u{0}\u{0}" [2022-05-16T17:36:32Z ERROR mp4parse] Found 2 nul bytes in "\u{0}\u{0}" [2022-05-16T17:36:32Z ERROR mp4parse] Found 2 nul bytes in "\u{0}\u{0}"

but on Big Buck Bunny from https://test-videos.co.uk/vids/bigbuckbunny/mp4/h264/1080/Big_Buck_Bunny_1080_10s_1MB.mp4 I don't get that output and everything looks normal:

libva info: VA-API version 1.14.0 libva info: Trying to open /usr/lib/dri/iHD_drv_video.so libva info: Found init function __vaDriverInit_1_14 libva info: va_openDriver() returns 0

but the video decode in intel-gpu-top shows 0%.

VA-API is confirmed to be working in mpv, if I play that same big buck bunny video in mpv I see 10-20% video decode usage.

vainfo shows

vainfo: VA-API version: 1.14 (libva 2.14.0) vainfo: Driver version: Intel iHD driver for Intel(R) Gen Graphics - 22.4.1 () vainfo: Supported profile and entrypoints

     VAProfileNone                   :	VAEntrypointVideoProc
     VAProfileNone                   :	VAEntrypointStats
     VAProfileMPEG2Simple            :	VAEntrypointVLD
     VAProfileMPEG2Simple            :	VAEntrypointEncSlice
     VAProfileMPEG2Main              :	VAEntrypointVLD
     VAProfileMPEG2Main              :	VAEntrypointEncSlice
     VAProfileH264Main               :	VAEntrypointVLD
     VAProfileH264Main               :	VAEntrypointEncSlice
     VAProfileH264Main               :	VAEntrypointFEI
     VAProfileH264Main               :	VAEntrypointEncSliceLP
     VAProfileH264High               :	VAEntrypointVLD
     VAProfileH264High               :	VAEntrypointEncSlice
     VAProfileH264High               :	VAEntrypointFEI
     VAProfileH264High               :	VAEntrypointEncSliceLP
     VAProfileVC1Simple              :	VAEntrypointVLD
     VAProfileVC1Main                :	VAEntrypointVLD
     VAProfileVC1Advanced            :	VAEntrypointVLD
     VAProfileJPEGBaseline           :	VAEntrypointVLD
     VAProfileJPEGBaseline           :	VAEntrypointEncPicture
     VAProfileH264ConstrainedBaseline:	VAEntrypointVLD
     VAProfileH264ConstrainedBaseline:	VAEntrypointEncSlice
     VAProfileH264ConstrainedBaseline:	VAEntrypointFEI
     VAProfileH264ConstrainedBaseline:	VAEntrypointEncSliceLP
     VAProfileVP8Version0_3          :	VAEntrypointVLD
     VAProfileVP8Version0_3          :	VAEntrypointEncSlice
     VAProfileHEVCMain               :	VAEntrypointVLD
     VAProfileHEVCMain               :	VAEntrypointEncSlice
     VAProfileHEVCMain               :	VAEntrypointFEI
     VAProfileHEVCMain10             :	VAEntrypointVLD
     VAProfileHEVCMain10             :	VAEntrypointEncSlice
     VAProfileVP9Profile0            :	VAEntrypointVLD
     VAProfileVP9Profile2            :	VAEntrypointVLD

As far as I know all flags are set properly (according to https://wiki.archlinux.org/title/firefox#Hardware_video_acceleration) and I have set MOZ_DISABLE_RDD_SANDBOX=1

if there's not already an option to autohide the bookmarks toolbar (like the address bar and tabs when in F11 mode [fullscreen])

can there be?

so like, on default the bookmark toolbar wouldn't show, but when I move my mouse into the specified area it appears (with the same animation as f11 mode)

 thank you,

let me know if i can already do that and if I'm just dumb.

 just to be clear, I want the tabs and url/address bar and tabs to always be there.

Actually might be cool to have options to autohide the tab bar too (separately).

 thanks again,

graham

tldr lol

Hello Everyone,

After inserting the proxy information, webpages in the container tab refuse to load/connect, I insert the IP address and I've also tried the Fully qualified domain name, using the type://host:port syntax, I get "The proxy server is refusing connections" and "The connection has timed out" error messages.

If I setup the proxy via the settings menu the entire browser uses the proxy server address, I am trying to specify a different proxy server for each container.

I want to remove an add-on called MAESTRO which I downloaded and it has taken over my home page. When I search for it in add-ons it doesn't come up . In addition none of the results has the place to click on to bring up the remove window. I want to get back to Firefox as my home page Please help.

thank you Ken Lyonss

My Firefox browser was automatically updated to version 101 today May 31, 2022.

The IMDB home page (www.imdb.com) is now broken. The drop down boxes at top right and left are displaying all their options on top of the web page content. Pages are not loading fully.

This is on a MAC. Safari and Chrome browser work properly for the IMDB page.

Is there a fix for this?

My custom theme was reverting back to the default every time I started Firefox. Going into my theme and disabling and re-enabling it worked, but having to do that every time was annoying. Googling the problem came up with many links to Mozilla support and only said that that it was likely a setting in the "prefs.js" file or a corrupted "extensions.json" file. Unfortunately, no one else was pointing me to what parameter in the prefs.js file I needed to search for. So I had to find it myself. So I made a backup of the file for safety, fired up my Edit Pad Lite text editor, and opened the prefs.js file. Yikes, lots of values. So I carefully searched for the word "theme". I kept pressing F3 to continue searching for the next occurrence of the word "theme" (without the quotes of course). I finally found these 2 lines:

user_pref("lightweightThemes.persisted.footerURL", true); user_pref("lightweightThemes.persisted.headerURL", false);

Hmm. The lightweight theme header was false. Could it be that simple to change it to true? So I made sure I had shut down Firefox as Mozilla states that the prefs.js file is overwritten by Firefox upon exiting, changed the value to "true", saved the file, and restarted Firefox. Viola, my theme stayed on. I selected other themes, exited and restarted Firefox, and that theme was still there and not reset to the default. My problem was solved. I don't know how that value got set to "false" (and don't care), but now that it's set to "true" my theme is working every time I use Firefox. I'm surprised that no one else had found and posted this simple solution.

I used Speedtest by Ookla. When the broad band was installed, the technician did this without a problem. Today when I tried I was taken to an installation page. After I used the SpeedTest, then my main page was gone and instead I have a bar of Firefox selected options. I've tried to find how this is done so I can set it back but I can't find it. Please help.

Dear Sir/Madam,

I have been using Firefox for a while now, I'm very happy with thee browser and have recommended all my firends use it instead of Chrome.

However, this morning, after the recent update, I have found I am unable to upload or download anything on any website using Firefox.

I have tested it using Safari and I can download images perfectly fine there. Even using extensions on FF, nothing is happening.

Please get back to me as soon as you get this

Thanks

Julian

I use LastPass as a password manager. I found one account where the username is being auto-filled incorrectly even though I have turned off autofill and autologin in LastPass. Also, I have un-clicked "Ask to save logins and passwords for websites" in Firefox. It seems like one or both of these should have disabled the little pop-up login window altogether.

I don't know where the incorrect information is coming from. Do you have any wisdom to provide. By the way, I am able to log in by filling in the username manually.

Thank you.

I use McAfee VPN, which is on always. Firefox loads most websites without problem. However, a website I use frequently, USPS dot com, fails to load with the approximate message "encoding error." If I turn off McAfee VPN, the website loads fine. The browser I used until last week (Chrome) had no problems with the US Postal Service site.

Hi All - I would like to see an app or Button where you can block emails or malicious sites that are continually poping up. I have noticed recently that there are more and more annoying popup and incoming junk these days Can you PLEASE PLEASE create a Blocker to prevent mallisious and annoying adverts that seem to be getting worse and worse. I find sometimes I spend 10 - 15 minutes a day trying to block unwanted spam in Thunderbird and Firefox. I alway use Firefox as I believe it is the best of all sites PLEASE PLEASE add a Blocking App. Its like getting JUNK MAIL INTO OUR LETTERBOX AT HOME. I have removed my letterbox totally and all my mail is sent to a P.O. Box. now and that solved e problem. PLEASE PLEASE Do something about the spam and adverts that waste time and are Very Very Annoying.

Thankyou in advance. A supporter of Mozilla Firefox Signed Arthur Rees my email is [removed email from public] Glenelg Australia