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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Ubuntu 14.04 freezes when during or after opening firefox

Ubuntu 14.04 freezes during or after opening Mozilla Firefox. I have installed Ubuntu on two computers, one is a dual boot with Windows 7 and the other I just did a strait install. The same problem ...
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1answer
38 views

Ubuntu writes the number 5 without beeing pressed

I was looking at the bitcoin charts and when selecting 3 Years firefox stopped working for a short time and when it continued to work it wrote many 5 in the top bar like when you hold the key. Ubuntu ...
4
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1answer
147 views

“crepitation” when viewing videos on facebook with Firefox

Problem only occurs when I try to view videos on my facebook wall in Firefox. There is no sound for the video, only a very loud "crepitation". Using Ubuntu 14. I already tired to reinstall ...
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3answers
72 views

Version 14.04 crashes too often

I just did the upgrade from version 12.04 to 14.04 and immediately had some problems. Whenever I try to open certain webpages using Firefox or Chrome, the screen just freezes. Mouse and keyboard are ...
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1answer
50 views

Firefox: Wikipedia MathML equations have too much space above and below

I recently switched from Windows to Ubuntu and i migrated my Firefox User profile. I have set my Wikipedia profile under Preferences > Appearance to show Math with MathML. Under Windows I didn't ...
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0answers
25 views

Firefox shows microphone active indicator

I'm running Kubuntu 15 and recently switched from Chrome to Firefox, I noticed some differences, one of them was this weird microphone indicator that shows up on my left-most screen. It seems to be a ...
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0answers
12 views

Weird focuss loss in browsers

I use Ubuntu 14.04 LTS fully updated and am having a problem with browsers (Chrome Version 46.0.2490.80 (64-bit) and Firefox V43.0... Chromium does not have this problem) Here is how to duplicate: ...
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0answers
12 views

Launch firefox in fullscreen mode on startup [duplicate]

I've created the "firefox.desktop" file at ~/.config/autostart to launch the firefox like other startup applications. I'd like it to be launched in full screen (for now, I have to press F11 manually ...
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1answer
33 views

Lost firefox tabs due to crash

I use the Save Session version 1.3.1.6.1 plugin in firefox to save my current sessions. I had kept 3 windows full of tabs for all almost a year when yesterday my firefox crashed. Now I can't find any ...
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1answer
198 views

Firefox slow at loading websites on Ubuntu 14.04

I am having a little problem with Firefox on my Ubuntu, and I was wondering if someone could help me. The problem is that my Firefox started to act very slow after the v43.0 update. I am using Ubuntu ...
5
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1answer
615 views

Newly installed Firefox 43 crashes when videos are played

Both my wife and I have 12.04LTS on our desktop PCs. Last Saturday a routine apt-get upgrade upgraded us from Firefox 42.0 to Firefox 43.0. The new version crashes consistently if you try to play and ...
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2answers
101 views

Firefox: Long lines in text area not visible

If you have long lines in a text area of Firefox, you can't see whether there is one long line or whether there are several short lines. I've attached two screen shots as an example. Firefox: ...
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2answers
38 views

Firefox does not start; could not create accelerators directory

firefox command throws this error: Could not create gnome accelerators directory `/home/username/.gnome2/accels': Permission denied. It works with sudo prepended. Should I change the ...
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3answers
353 views

Cannot download files with firefox 43

I have two User accounts on my machine, user1 and user2. In user1 account, Firefox downloads fail: if I click on a link to a something like a zip file, or choose 'Save link as...', no dialog window ...
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0answers
136 views

Buttons not working in firefox and pulseaudio: strange behaviour

Something very strange happened to me. Some buttons of firefox were very slow to respond or not responding at all, like the button displaying the list of bookmarks. I could not understand the reason: ...
1
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1answer
92 views

How to activate Shumway in Firefox?

Because Adobe Flash is so insecure I want to install Shumway as an alternative as I currently have nothing installed so am having to do with the built-in HTML5 players on the sites which have them, ...
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0answers
52 views

Firefox is configured to use a proxy server that is refusing connections

The last few days, firefox 43.0 on Ubuntu 12.04 is giving me the error " The proxy server is refusing connections. Firefox is configured to use a proxy server that is refusing connections." but ...
1
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1answer
35 views

Logging in to Facebook with GNU Icecat

I don't know if this is the right place, but: I've installed GNU Icecat, but whenever I try to log in to Facebook it tells me I have to enable cookies. I have enabled cookies (and third party cookies) ...
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1answer
45 views

Update Firefox in Ubuntu 12.10 [duplicate]

first of all I am Karthik and I am new to Linux. I heared about Ubuntu and I switched to it from Windows 10. I liked the style and efficiency of Ubuntu. I am using Ubuntu 12.10.... I need to know more ...
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1answer
260 views

Where can I download Firefox Unbranded?

Well, I just updated Firefox on Ubuntu 14 to v43 doing sudo apt-get update, and my old extensions stopped working as they are not signed. Mozilla has apparently stated that: ...
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0answers
56 views

Firefox update broke LastPass

I'm running Ubuntu 14.04LTS. Yesterday evening, the software updater upgraded Firefox to version 43.0. My LastPass add-on was disabled and I keep getting the message that "LastPass will be installed ...
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0answers
15 views

Firefox deleting my files on guest account? [duplicate]

I don't know anything about Ubuntu or Mozilla Firefox but I was using a friends computer to upload some photos to social media. The whole computer then froze and became unresponsive. He had to reboot ...
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1answer
743 views

How do I install the 64bit version of Firefox without losing any of my data? [duplicate]

Firefox 43 comes with a 64bit version. But the one delivered with Ubuntu is 32bit. Download Firefox link but in this link there is an option to download 64bit version but its in tar.gz format. Does ...
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0answers
21 views

Weird Firefox behavior, treating clicked links as if they were grabbed images

Lately in Firefox on 15.04 (fully updated), I've been noting a really irritating behavior. I do a Google search for something (for example; the bug isn't limited to Google results) and then click on a ...
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0answers
28 views

System space decreases by after installing Cinnamon [closed]

I installed Cinnamon 2.6 on my Ubuntu 14.04 LTS today and I noticed something very strange. The space in my Ubuntu partition started filling up without any plausible reason whatsoever. I did not ...
4
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2answers
153 views

How to make Firefox download to Downloads folder even when “Open with xxx” is selected?

I have recently noticed that when downloading something with Firefox, if I select the option "Open with xxx" instead of just the "Save file" option, the file is then downloaded to /tmp and opened with ...
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0answers
39 views

wireless usb adaptor problems (system hangs)

I am trying to use an asus usb-ac51 wireless adaptor to get internet on my desktop pc running Ubuntu 15.10. I installed the driver for linux that was provided with the accompanying CD for the usb ...
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0answers
68 views

Google Chrome using on Ubuntu 15.10 cause random black screen with logout

At work I daily use an HP Compaq Elite 8300 (Intel i7), with Ubuntu Desktop, Eclipse and Netbeans for develop linux embedded software, Java EE application and HTML/Javascript solution, and as browser ...
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1answer
24 views

Touchpad broken, firefox crashes, no space in /boot and antivirus [duplicate]

I've been running Ubuntu 14.04 for several days on a Toshiba satellite 600 series. It was designed for windows 7. It might be a little bit damaged by a lightning strike in May 2015. The issue is ...
1
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1answer
65 views

Poor video performance in Firefox

I'd like to try to switch back from Chrome to Firefox, but there is an issue that makes it impossible. When I play any video with Firefox it works very slow and quality worse than in Chrome. For ...
0
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1answer
32 views

Does ubuntu 14.04 still have desktop web app integration?

I remember a while back I could integrate web apps into ubuntu. This doesn't seem possible anymore. Chrome or firefox do not prompt me anymore (perhaps I said no to this prompt once?) and I can't ...
2
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4answers
1k views

firefox - this browser does not support video playback

I have problem watching twitter embedded videos. I got this error message: "This browser does not support video playback." Here is an example I have Firefox version 43.0.
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52 views

How to play a midi file in Firefox?

I would like to play midi files in Firefox. For example, I'd like to click on the files on this Wikipedia page and have them play in the browser and not have to download them and use a separate ...
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0answers
15 views

Frecuent freezing runing Ubuntu 14.04 with dimmed screen

i am running Firefox and machine get freeze very often and dimmed screen. after some seconds it comes back, around 1 munute later starts cycle again. Ubuntu 14.04 Firefox apache2 in bg thank you and ...
0
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1answer
20 views

Changed properties of application by accident what is default: FireFox

I was trying to create a custom shortcut so that I could use multiple profiles with FireFox, however when I created the "link" it was a symbolic link so I edited what I thought was a "shortcut" but ...
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0answers
66 views

Wget giving 403 error

I am trying to download a mp4 file from www.dayt.se. I used Inspect Element feature of Chrome to get the url of the video file. I can download the file with that URL on Chrome. But I get the 403 ...
0
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0answers
44 views

X-window freezes (Firefox) but becomes active again if I maximize the window

Occasionally the Firefox window freezes. The cure is to maximize the window and then I can resize it to the previous size. This happens very rarely (so its not a big problem). However, I have ...
0
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1answer
58 views

Ubuntu slows after a day of use

I installed Ubuntu on my laptop a few weeks ago and I've noticed that after a day of use it's noticeably slower than when I boot it up in the morning. I'm doing web development so I'm using PyCharm, ...
5
votes
1answer
56 views

Where on earth are my fonts? Firefox has nothing for “sans-serif”?

I recently upgraded to 15.10 and jumped through a bunch of hoops to get Clementine running and somewhere along the way I stopped seeing text on quite a few web pages in Firefox. I thought that a ...
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0answers
74 views

Ubuntu 15.10 freezes on new tab opening in any browser

I'm using Ubuntu 15.10 on Thinkpad T440, and latest Chrome, Firefox and Vivaldi as browsers. For each of them system sometimes freezes on new tab opening (to be more specific, on page in that tab ...
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0answers
37 views

how to correct firefox fonts and colors after installing kde in ubuntu

Recently, I installed kde-desktop in ubuntu 14.04. After that fonts and colors in firefox are ruined. How should I correct it?
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0answers
67 views

Youtube fullscreen weirdness in 15.10

I've recently updated to 15.10 from 15.04. I first had to fix Youtube not streaming in 1080p60 by following this answer: http://askubuntu.com/a/689476/310257 Now I have a second problem: when in ...
2
votes
3answers
136 views

Chrome and Firefox not playing audio but system does

Last weekish my Chrome, Chromium and Firefox stopped playing any audio, wether it be from an <audio>, <video> or flash player. System tests play audio fine. I am suspecting Chrome and ...
0
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0answers
109 views

Can't play quicktime stream video on Ubuntu 15.10

I've installed Ubuntu 15.10 instead of Ubuntu 14.04. After that I can't play quicktime stream video from my video surveillance in Firefox (and in chromium and google-chrome too). I tried to install ...
0
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0answers
21 views

Terminal Command for open Application such as Skype, firefox et [duplicate]

At first I want to tell you sorry that my English is not good I am new in Ubuntu. And I am trying to learn it slowly slowly. I have searched many times in Google or others source, but I can't find it ...
0
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0answers
58 views

How could I change the fat fonts shown for gmail, in Firefox on Lubuntu?

Here is how Gmail looks in Firefox on, Windows: Lubuntu: The fat fonts lead to my being able to see lesser text in the same screen width and visual clarity/crispness. As you can see, the "i" on ...
2
votes
2answers
252 views

NHK Live streaming not available on this browser

Ubuntu 14.04 LTS Desktop Firefox 42.0 Shockwave Flash 11.2.202.548 / 11.2 r202 AMD 64 All I can get from NHK World Live TV streaming (http://www3.nhk.or.jp/nhkworld/en/live/) is: Live streaming not ...
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1answer
38 views

How to change font size when printing from Firefox?

When printing a page from Firefox I only get a very large font so even the smallest web page needs two or more pages. Scaling the screen font has proved to be ineffective. Thus my question. TIA.
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1answer
76 views

Macbook Air overheating on firefox

Just installed Ubuntu 14.04 on my 2014 Macbook air .. when opening up firefox it starts to heat up a little like from 49°c to 55-56°c .. and then when streaming video on youtube it just goes up to ...
3
votes
1answer
223 views

How to create a custom splash screen for a program?

I am currently building a client for our users at work with Ubuntu MATE 15.10 and Plank as a dock. But when I click for example the Firefox icon in the dock nothing happens until it suddenly pops up ...