Mozilla Firefox is a free and open source Gecko-based web browser. It is the current default for the Ubuntu desktop.

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23
votes
5answers
6k views

How can I change Firefox's default dictionary?

It's aboot time I asked this one. Firefox thinks I'm Canadian. I've got absolutely nothing against Canadians and their spelling is a lot better than Americans' but I don't spell specialised with a z. ...
1
vote
1answer
28 views

Ubuntu touch: webcams in firefox? Aquaris M10

I have an Aquaris M10 with Ubuntu Touch fresh-out-of-the-box (kind of) here, and I can't get any page with a webcam to show in firefox. Try out http://webqr.com to see. webqr reports an issue saying ...
2
votes
0answers
17 views

Typed characters disappear when moving mouse (Firefox/Rikaichan/IBus-Mozc)

Characters sometimes disappears on Firefox: Enable IBus-Mozc to type in Japanese Type g Type a. The character が appears. Don't type Enter. Move the mouse The character disappears I would report a ...
0
votes
1answer
108 views

Kubuntu -> Chrome and Firefox Tab and bookmarks fonts are really tiny

How do you make them bigger? Things I did today. I had a monitor go black today, loaded nvidia management to correct this problem, also adjusted monitors via window management. Not sure if those ...
1
vote
0answers
18 views

UI Font Size in Firefox, Opera, Chromium and Thunderbird Disregard System Settings

I don't know why but all 4 applications are not following the font size set in system settings. Any clues?
2
votes
1answer
90 views

How can I use Pearson's ePEN java applet on Ubuntu?

I mark exams for Pearson online using a Java applet called e-PEN on this site. The 'minimum system requirements' state that only Vista or later Windows, and Internet Explorer 9 or later, are supported....
2
votes
2answers
10k views

“Connection is Untrusted ” error in Firefox

I have downloaded Ubuntu 14.04 and I have tried it (without installing it). I connected to the internet via DSL and I tried to surf. When I tried to go to an https:// site, it showed me the error ...
16
votes
5answers
14k views

How can one make Firefox ignore my GTK theme entirely?

I have a dark GTK theme installed in my Ubuntu 10.10 install and a persona installed for Firefox that I also like. The problem is that Firefox is using my dark GTK theme for items like buttons and ...
17
votes
6answers
20k views

Add certificate authorities system-wide on Firefox

I want to add some root CAs that doesn't come with the default firefox on Ubuntu, but I don't know how. I tried adding them to the local certificates with certutil, but it didn't work. It messed up ...
7
votes
3answers
68k views

How to enable Moonlight/Silverlight 5 on firefox?

I have installed moonlight from this post here: http://askubuntu.com/a/327862/188878 the problem is, the application/website I am trying to use "requires" silverlight 5. is there anyway to trick the ...
-3
votes
0answers
29 views

Performance of firefox in linux [on hold]

I like to know is there a performance issue when we use firefox in linux which is not observed when installed in windows, or a major disadvantage of FF in linux env?
0
votes
0answers
19 views

Automatic pop-up warning [on hold]

I am using Firefox if a specific page is closed in Firefox a pop-up message should be shown in screen is it possible?
0
votes
1answer
87 views

Removing the Firefox top panel

I would like to remove this top panel in Firefox (I'm using Firefox Developer Edition): I am running Ubuntu GNOME 15.10. How do I remove the top panel hilighted in the picture above?
1
vote
0answers
10 views

WebGL not working

I have Ubuntu Mate 15.10, and Firefox 44, and I am trying to play eyewire from eyewire.org. Persistently I get errors. I have tried modifying the WebGL options in about config to force webGL to run, ...
0
votes
0answers
75 views

How to uninstall ffmpeg installed via Firefox addon YouTube Video and Audio Downloader 0.5.2?

Firefox Addon YouTube Video and Audio Downloader 0.5.2 URL is https://addons.mozilla.org/firefox/addon/youtube-video-and-audio-dow/?src=api. After ffmpeg is installed, YouTube Downloaders (YouTube-dlg,...
0
votes
0answers
7 views

How can I find out why/how Firefox under Kubuntu 16.04 allows cookies from sites I have blocked?

I have blocked the site exactly as how the domain is specified in the cookie itself. I have also blocked the domain with a wild card. Still it is able to create cookies in my browser. How can I ...
0
votes
0answers
30 views

Firefox + streaming video (m3u8 playlist)

I'm running a fresh install of Ubuntu 16.04 with Firefox 47. I'm finding that streaming HTML5 video does not play inline in the browser when a <video> tag is used that specifies an m3u8 ...
3
votes
2answers
4k views

Reset firefox from command line

Mozilla firefox gives an option to reset it. Check the below images to ee how its done graphically; I need to make a script where this can be done through bash. Can someone tell me the command ...
1
vote
2answers
58 views

ubuntu 15.10 firefox 47 java plugin weirdness

I have just updated my system to use oracle java 8 build 91 (latest and greatest) and can't get the firefox plugin to work. Every time I try to verify it, it crashes. When I tried the approved ...
2
votes
0answers
48 views

spaces affect the firefox commands in terminal [on hold]

firefox -private & This command open private browsing . but the same command firefox -private& without space between ampersand and the -private option will only open normal browsing ...
0
votes
0answers
16 views

How can I get youtube's notification bell icon for comments working on firefox/16.04?

On Firefox, youtube's notification bell icon does not display the number of unread messages. If I click on the bell, it says "Please sign in to view your notifications." even though I am signed in.
0
votes
2answers
2k views

Youtube videos on Firefox not playing properly

I've reinstalled Ubuntu 14.04 multiple times because Youtube videos haven't been playing properly. I thought maybe reinstalling Ubuntu might help but apparently it hasn't. During video playback, the ...
0
votes
2answers
857 views

Firefox freezing on youtube

The title says it all. Once I try accessing youtube, firefox freezes and I have to force kill it with killall firefox or xkill firefox . The issue is youtube specific; other video websites , such as ...
1
vote
2answers
532 views

Firefox Becomes Unstable Playing Youtube Videos

I'm having an issue with Firefox. Anytime I try to play a video on YouTube (or an embedded YouTube video on another site) my browser becomes unstable. The video is jumpy, going full screen to window ...
1
vote
1answer
2k views

Website video slow/choppy; somehow fixed it briefly on Chrome (but not on Firefox), but problem resumed on restart

Watching video content on any website (YouTube, news sites, TV sites etc) the picture is slow/choppy, not at all smooth. The sound is fine. I'm mainly using Chrome, which has the latest Flash enabled. ...
5
votes
2answers
5k views

Ubuntu 14.04: Videos refusing to go fullscreen and freeze on Firefox

In Firefox on Ubuntu 14.04, just upgraded from 13.10, I can't make any video full screen without issues. When I tried it usual do this: video freezes, and sometimes you can hear the audio, but not ...
3
votes
2answers
1k views

Firefox freezes frequently

Good day, The application Firefox freezes very frequently and I have to use 'force quit" to get out and hence I lose all my activities and it is extremely frustrating. Only in one occasion, there ...
1
vote
0answers
17 views

Rolling back an application upgrade

I don't think an actual rollback or system restore exists in Linux/Ubuntu, so I'm looking at other options to reverse a recent browser upgrade. I would like to revert to a slightly older version of ...
36
votes
5answers
155k views

How can I make Firefox open magnet-links in Transmission?

I can't find out how to make Firefox open magnet-links in Transmission. There is no option to make it the standard program for magnet-links in its properties, and as I am not experienced with the ...
3
votes
2answers
39 views

Firefox opens downloaded PDFs in File Roller

When I download a PDF and try to open it from the Downloads window, it will attempt to open it in File Roller, which will complain that about PDF not being a supported archive type; I'd like to open ...
1
vote
1answer
127 views

Firefox Gstreamer vaapi

I have a laptop with not much CPU power, so I want that Firefox and Gstreamer (and maybe Rhythmbox) uses the VAAPI on my Ubuntu 15.10. vainfo gives me already the following output, so the vaapi driver ...
-2
votes
2answers
55 views

Why http://openbittorent.com/ can't be opened with firefox?

I have set global proxy with shadowsocks in my openwrt. Now almost every web page can be opened in my firefox. It is so strange that http://openbittorent.com/ can not be opened. It can be pinged in my ...
0
votes
0answers
20 views

Firefox change theme automatically

My firefox changed the theme without me choose. How can I go back to the default theme? I uninstalled and installed again but not resolved.
4
votes
1answer
43 views

How to increase text size systemwide including browsers ubuntu?

I have a new laptop which is 1920x1080 width(15') . The thing is text size in display is very small which puts a strain on my eyes. I changed the text size inside ubuntu through system settings-> ...
7
votes
2answers
2k views

Ctrl+F4 doesn't work in KDE for Firefox / Chrome / Chromium

I observed that the shortcut for closing a tab in Firefox/Chrome/Chromium (Ctrl+F4) doesn't work on KDE. It seems it is being intercepted by KWin. Is there any fix or workaround for this problem?
3
votes
5answers
4k views

How can I get Firefox to use Dolphin instead of Nautilus?

I am using dolphin as my file manager and when I download something via firefox, I right click the download dialog and choose "open folder", I always get nautilus. Why doesn't firefox open the ...
0
votes
2answers
66 views

Firefox or Ubuntu browsers not connecting to WiFi but WiFi connected OK

Firefox or Ubuntu browsers not connecting to wifi. wifi connected ok and working on MS Windows laptop. Newly installed Ubuntu on Acer Aspire laptop. Firefox connects to wifi sometimes for a short ...
1
vote
2answers
208 views

Xubuntu 16.04 Firefox 46 screen distortion when scrolling

Screen distorts (shimmers, wavy lines/appearance) when scrolling in any web page. Disabling hardware acceleration and smooth scrolling, doesn't make any difference. Problem doesn't exist in Chromium ...
0
votes
0answers
9 views

Force Epiphany to open links in default browser

I use Firefox as my default browser and I started using Epiphany for web apps (I use it fox google inbox) as I prefer it as a separate window with it's own icon. What I don't like about it is that ...
2
votes
1answer
29 views

Firefox scrollbars don't reflect Widget theme selection

[This question is similar to another one (for Ubuntu vs Lubuntu) where there was no real answer other than to look for other Firefox themes -- something that has not worked for me in the past. At any ...
4
votes
2answers
2k views

How do I get WatchESPN to work?

I've tried Chromium, Chrome, and Firefox. I've tried various flash players (including Adobe Flash). I'm logged in through my cable provide. Still, no dice. I see some very old posts about ...
3
votes
1answer
6k views

is there a deb package to install firefox ESR?

I would like to have firefox ESR version on my system but I would like to install it via apt-get. Is there a special package to install this? Download Link would be: http://www.mozilla.org/firefox/...
0
votes
2answers
80 views

firefox: some tool boxes with black background (unreadable)

In my ubuntu 14.04 machine, and only for one of the user accounts in that machine, firefox has begun to show all those right-click context menus, pop-up lists of suggestions, and the list of recent ...
1
vote
2answers
71 views

ssh-tunneled SOCKS proxy connection refusals on Firefox 47.0 / Kubuntu 16.04

I am having difficulty making connections to websites using Firefox over a tunneled SOCKS proxy. SOCKS4/SOCKS5 makes no difference. I set up the tunnel with ssh -D 1234 id@remotehost.example.com ...
0
votes
1answer
59 views

FireFTP Plugin in Firefox Stopped Working Suddenly

On my Mac, I load an Ubuntu VM 14.04 LTS via VirtualBox. Inside that, I load the Firefox browser and the FireFTP plugin. Without changing any settings on my Mac or Ubuntu, and after having a couple ...
0
votes
0answers
37 views

Firefox fails to start after upgrading

I was running Ubuntu 15.04. Knowing that the newest version is 16, I tried to upgrade today. In the update setting in Software Center I've chosen "Any new Ubuntu version". Then I run "sudo apt-get ...
0
votes
3answers
6k views

Whatsapp Web QR code not loading on Chrome/Firefox on Ubuntu 14.04

I am trying to use the service https://web.whatsapp.com/ on Chrome/Firefox on Ubuntu 14.04 LTS (Dual boot Windows 8.1). But the QR code that needs to be scanned by the Whatsapp mobile app is not ...
0
votes
0answers
9 views

Uploading files online: external drives not visible ubuntu 16.04

First here's what I'm using. Ubuntu server 14.04. Ubuntu client 15.10 and 16.04 both recently updated. Mozilla Firefox as browser. I have a problem When uploading items online. When browsing files ...
0
votes
1answer
88 views

I can't update or remove java 10.67.2 plugin in firefox 47.0

When I click on (plugin) update now it is blocked and I am re-directed to the update now button to update Java. I updated Java to version 8 update 91. I followed the instructions about removing the ...
1
vote
2answers
57 views

Can you empty cached items from memory without needing to close Firefox?

I currently have Firefox set up so that a persistent cache is not stored after closing Firefox. I only have the memory cache enabled which it empties when Firefox is closed. Sometimes I need for ...