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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15
votes
4answers
26k views

Mozilla Firefox terribly slow on Ubuntu 14.04

It is being observed since my upgradation to Ubuntu 14.04, that the Firefox browser is terribly slow. Can anything be done about it?
1
vote
1answer
5k views

Youtube only show videos in 360p quality in Firefox Developer Edition

I've been having this issue with Firefox Developer Edition (FDE) on Youtube, where it show videos only in 360p quality, there's also an "Auto" option, which is also, the 360p quality. I'm in Ubuntu ...
1
vote
0answers
440 views

How to get rid of the DNS Unlocker adware?

From this morning I'm witnessing unfamiliar ads apearing in different pages while using Firefox which they say "Ads by DNSUnlocker". I searched for it and it seems this is a known adware infecting ...
1
vote
1answer
83 views

KDE dark themes with specific windows overrides

Is there any ark KDE themes that have a functionality to do what Oxygen can do - "specific windows overrides"? Or is there at least dark Oxygen themes or some way to make default Oxygen darker? I ...
0
votes
1answer
45 views

Firefox does not play YouTube HTML5 videos

Firefox does not play YouTube HTML5 videos for me. There seems to be no way for me to make them start. They to not autostart and the lower left button (the triangle) does not start the video. The ...
0
votes
1answer
279 views

CRITICAL **: gst_app_src_set_size: assertion 'GST_IS_APP_SRC (appsrc)' failed

As reported here before, in some cases, at least, firefox won't play bandcamp tracks. I have tried to do it when running firefox from the command line, both with my default profile, and with a newly ...
0
votes
0answers
196 views

ubuntu 14.04 firefox starting without sudo gives security library failure on SSL sites

I have a problem with ubuntu desktop 14.04. When executing firefox without sudo, then all the https sites (even http://google.com) gives me Error code: sec_error_library_failure But when ...
0
votes
0answers
16 views

Firefox not redirecting instead showing about:blank

Recently I have found that Firefox is not redirecting. For example a http://t.co/OfIwUa4dxb link on Twitter will not redirect to http://www.ncbi.nlm.nih.gov/pubmed/26308551?dopt=Abstract but instead ...
0
votes
1answer
29 views

DRM issues 15.04

I am trying to watch NBC Sports on my Ubuntu machine. I currently have 15.04 installed. I have tried using both Chrome and Firefox. Chrome (updated) has flash 18, which is good. I've read though that ...
1
vote
1answer
61 views

How to change the Firefox icon?

I have Ubuntu 14.04 64bit. I am currently using Firefox which is present on the Unity panel (or launcher). The problem is that the icon is a question mark. I want to change it to the standard Firefox ...
2
votes
1answer
24 views

Firefox doesn't play audio

To be clear, the audio on my laptop is working just fine. Other applications in Ubuntu play sounds as expected. Firefox, however, won't output any audio through the native speakers or headphones. ...
1
vote
2answers
44 views

Mozilla Firefox doesn't scroll smoothly on Ubuntu

I have problem with Firefox on Ubuntu. When I scroll on facebook or youtube it doesn't scroll smoothly like it used to on Windows. It's hard to explain but main point is when I scroll down/up it ...
0
votes
0answers
68 views

Any Webbrowser crashes in 14.04 since last update

I've been experiencing some annoying crashes of any web browser I use since I last updated Ubuntu & Firefox (However the problems extend to Opera & Chrome as well). First I'm just a user who ...
-2
votes
0answers
21 views

How to move firefox to Applications [duplicate]

I tried to go to usr/share/applications where i found out that all my applications were present in it except Mozilla firefox. I strongly need firefox to be present in Applications. Please suggest ...
1
vote
0answers
25 views

Firefox does not open dolphin for inode/directory in kubuntu 15.04

this question has been asked multiple times like 1 and 2, but their solutions won't work anymore. Probably because of Plasma 5 and the new firefox versions. So I am using Kubuntu 15.04, Firefox 40.0 ...
0
votes
0answers
15 views

Chromium problem

Well, this is new.. I think I hosed my system and don't know even where to start poking around.. I did apt-get update, apt-get upgrade and noticed that chromium had been removed from my system. So ...
12
votes
3answers
5k views

How can I get Firefox to recognize multitouch gestures on a touch screen?

Multitouch seems to be working fine on Chromium out of the box, but not on Firefox. On Chromium, dragging a finger up or down the screen scrolls the screen as expected, but on Firefox, that gesture ...
-10
votes
2answers
235 views

Run FireFox as root as always without password

How i can run firefox as root from launcher in ubuntu 14.04 always without password ?
2
votes
1answer
3k views

Ubuntu 14.04 System Freezes - Firefox eats a lot of memory with nvidia-prime enabled

I have a clean install of Ubuntu 14.04 on a Dell XPS L502X Laptop with a discrete, optimus-enabled Nidia card. System was working great until I decided to install bumblebee to enable the Nvidia card ...
0
votes
2answers
485 views

Firefox 40 really slow

I had a problem with Firefox 39.03 unable to start. This problem was been fixed with Firefox 40, however; now Firefox is really slow. Tried most of the published fixes, new profile, uninstall - ...
10
votes
5answers
18k views

How can I get Firefox to open torrent files with Transmission?

Every time I download a torrent file (.torrent), Firefox thinks I should open it with a text editor. How can I get it to open with Transmission? In Edit -> Preferences -> Applications, there's no ...
2
votes
5answers
263 views

Scroll *one* line at a time in a web browser

If you read long texts with a web browser, it is easier for the eye to have something that guides them. One simple solution is to read at the bottom of the screen and scroll down one line after the ...
0
votes
1answer
777 views

Why won't videos on some websites play?

I recently installed ubuntu on my laptop and was able to install the flash plugin. I am able to play youtube videos on firefox with no problem. However videos on some websites don't appear, only ...
3
votes
4answers
4k views

Youtube doesn't work anymore in firefox (Ubuntu 14.04)

Title says it all. Whenever I try to play a Youtube video I get the error messages: Your browser does not recognize any of the video formats available It worked fine just before I installed the ...
0
votes
2answers
33 views

Firefox doesn't follow the system locale

I set up the default system language to Polish and the regional settings to Poland. All applications but Firefox follow this setting. Firefox stays in English Is it possible to make Firefox follow ...
-4
votes
0answers
32 views

firefox can't install [closed]

W: Duplicate sources.list entry http://dl.google.com/linux/chrome/deb/ stable/main amd64 Packages (/var/lib/apt/lists/dl.google.com_linux_chrome_deb_dists_stable_main_binary-amd64_Packages) W: ...
3
votes
2answers
56 views

Automatic updater on Ubuntu 14.04

I am using Ubuntu 14.04 and I have enabled automatic updates but every time my Firefox and Chrome are updated they are downloaded from scratch, so every time my update size is more or near 100MBs. ...
1
vote
0answers
30 views

Firefox screen content frozen, but I can switch tabs

Multiple times a day, I notice that the content of Firefox is frozen on some webpage. But the app is not frozen! I can right click to open the menu, I can switch tabs (cannot see the content, but see ...
1
vote
0answers
249 views

WebEx on Ubuntu 15.04

I can't get webex to work. When I click start "Enter Room" it gives me the helpful error of: "Your browser, browser version, or operating system is currently unsupported." I've tried the ...
0
votes
1answer
20 views

Java Plug-in Crashed in Firefox 28.0 on Ubuntu 14.04 LTS

I just installed Oracle Java 1.8.0_51 .And set as it as by default.I also linked libnpjp2.so file in Mozilla folder in /usr/lib/mozilla/plug-in. But when I am going to verify java its show no java ...
0
votes
0answers
18 views

Chrome copies Firefox browsing history

I have only an SSD on my computer, so I decided to keep it as clear as it is possible. It's my first time with Ubuntu, I have only used it several months on a virtual machine, exclusively for working ...
-2
votes
1answer
112 views

Firefox: make ctrl+enter submit a form, even if cursor is in a textarea

How can I make Firefox submit a form by hitting ctrl+enter even if cursor is in a textarea? There are some work arounds to enable this, if you create web pages with jquery. But this short cut should ...
0
votes
0answers
36 views

Could firefox be causing system crash?

Originally the title for this question was: Could my USB3 SSD be causing my system to crash? But then I realized that all three times that linux has crashed this week, I was working in Firefox. I'm ...
0
votes
0answers
17 views

Ubuntu 14. streaming video quality 360 /Auto [closed]

I can only play video quality upto 360p/Auto on Ubuntu 14. using both firefox and latest chrome browser.?
4
votes
4answers
2k views

How to uninstall apps installed through Firefox Marketplace?

In Firefox 35, there is menu called "Apps" that allows to install "firefox apps" through Firefox Marketplace. I installed an app but now I can't find how to remove it! Is there an obvious way that I ...
1
vote
1answer
17 views

How to copy text from interactive online editor?

I cannot copy source code from interactive online editor like FStar When I paste code everything works as it should, but trying to highlight and copy/cut from it ends with one character "".
0
votes
1answer
103 views

node.js + jpm not working after installing: JPM [error] Error: spawn EACCES

I am moving from cfx to jpm After installing node.js by sudo apt-get install nodejs I installed jpm: npm install jpm -g. Now I am trying to run my addon: jpm run -v: JPM [info] verbose set JPM [info] ...
0
votes
1answer
213 views

Firefox Addon not working [Firefox 11]

I have installed FX Chrome theme from the firefox addons website. To tweak it I also installed FX Chrome Mods. But when I click on Preferences to open the settings of the FX Chrome Mod addon but it ...
1
vote
1answer
38 views

Can I take the firefox book marks folder and copy it? [closed]

I am trying to create a base ubuntu image with some bookmarks in firefox. Is there a way I can SCP into the unit and copy\paste a new book marks file? Thanks!!!
1
vote
1answer
173 views

Firefox can't get the latest java version in ubuntu 15.04 in about:configs with iceatea-8-plugin, but oracle java version verify page can

In my laptop, I have openjdk1.6, openjdk-1.7, and openjdk1.8 installed. I can see all of them through update-alternative --config java. $update-alternatives --config java There are 3 choices for the ...
1
vote
4answers
182 views

Youtube not playing above 360p

I finally switched to using Ubuntu a few days ago and so far it is great! The only issue I am having is that YouTube doesn't play above 360p. The options above it are not showing. It shouldn't be that ...
5
votes
1answer
255 views

Internet browser crash

I installed Ubuntu 15.0.4 64 bit. My mainboard is an ASUS M2N-PLUS SLI vista edition with AMD CPU, with 4GB of RAM and an nVidia 8500 GT video card. When I start Firefox, after opening a new tab ...
3
votes
2answers
686 views

In youtube, There are just 360p and 720p options .(no 240p,480p and 1080p)

A couple of days before, everything is working perfectly good. But After last Ubuntu update -also flash player has updated- (I just think that was occurred after update but maybe not) I can not watch ...
-1
votes
0answers
32 views

Urdu Language font in 14.10 [closed]

Many web sites incorrectly render under the default urdu font. But the custom font used here displays very properly. So Is there any way I could use that custom font as default for all websites using ...
10
votes
1answer
361 views

Why is package 'xul-ext-ubufox' is required to install the Firefox package?

When trying to install the Firefox package on Ubuntu 14.04 it prompts me to also install xul-ext-ubufox: $ sudo apt-get install firefox Reading package lists... Done Building dependency tree Reading ...
1
vote
0answers
369 views

cannot watch hulu on firefox after fresh install on 14.04

I just installed ubuntu and decided to watch hulu, I just got a white box. No flash options (or anything) appear when I right click. Other flash apps work fine, though when I right click to change ...
2
votes
1answer
94 views

No sound in Youtube since falshplugin-installer updated 14/09/15

So title says it really, updated and then no sound ONLY for YouTube, all other flash seems fine. The update downloaded and installed fine. I tried reinstalling the plug in as well as the restricted ...
0
votes
1answer
177 views

How to install previous Firefox version?

I'm using Ubuntu 14.04 and I use the Perapera Chinese add-on for Firefox. It worked up to version 39, but now in version 40 it just stopped working. So I tried to downgrade to version 39 following ...
0
votes
1answer
176 views

Lightspark doesn't works in firefox 29.0 and Chromium 34.0.1847.116 (ubuntu 14.04)

I need your help, I'm using Ubuntu 14.04 and I've installed Lightspark (lightspark 0.7.2-3ubuntu1) as an alternative to Adobe Flash Player. But Lightspark doesn't works both with Firefox 29.0 and ...
0
votes
1answer
2k views

Chrome versus Firefox - which is better? [closed]

Perhaps this is not the best title to use, but I'm running 12.04, which I always update. I'm not sure if it is just my impression, but is Chrome really buggy? I generally use the latest updated ...