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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49 views

Laggy Youtube performance

Youtube works fine in Windows, but in Ubuntu GNOME 15.10 video is very not smooth. Framerate drops, the lag is very visible when things move on the screen. both Firefox and Chromium have this issue, ...
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29 views

firefox / html5 video /wifi

Got the strangest experience. Firefox on Ubuntu (14.04) does not play html5 video (eg YouTube) it plays a few frames and then stops. When I disable my wifi adapter (button or software disable does ...
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13 views

Something resets my FireFox PAC file setting

I'm trying to set up proxy autoconfiguration in my FireFox 45.0 under Kubuntu 15.10. I'm specifying a path to PAC file in FF's Preferences\Advanced\Settings\"Automatic proxy configuration URL". It ...
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1answer
65 views

Warning of “unresponsive script” in Firefox

I am getting warning in Firefox about Unresponsive Script for the last few days and all commands lock-up. The script is said to be: ...
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1answer
30 views

Is there any way to prevent application from changing volume level of my microphone?

I've recently switched from Windows to Ubuntu(15.10), it's my first experience with GNU/Linux and so far it was flawless except for one thing: During facebook calls(it's based on Skype afaik, but it ...
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31 views

How do I disable the F11 key?

I want to make a kiosk using Firefox, and I need the F11 key to be disabled so that the user cannot leave the fullscreen. On top of this, I want Firefox to startup in fullscreen as well. But the few ...
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170 views

“No plug-in detected” while live view of “Platinum CMIP7422-28M” IP Camera in mozilla fiefox browser on ubuntu 14.04

I want to view live video stream of "Platinum CMIP7422-28M" IP Camera. In windows, Internet Explorer after installing "web components" , I can view the live stream but not in Ubuntu 14.04 mozilla ...
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73 views

How to remove “tradeexchange.com” link opening everytime in Chrome[ubuntu 15.10]

I am on Ubunbtu 15.10. In either Firefox or Chrome, everytime i click a link, a rouge link called "tradeexchange.com" opens. I tried everything - but i am unable to remove this. I cleared all the ...
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70 views

Keep Screen On When Watching Online Videos

I really like Ubuntu 14.04 so far. But when I watch a video on-line, I need to move my mouse every few minutes to avoid screen going black - highly annoying and doesn't make much sense when nearly ...
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29 views

Default download folder for pictures in Private Firefox

During a private window session in Firefox, pictures I want to "Right Click > Save Image as" seem to default into a different folder. Normal browsing and other downloads not using the above ...
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186 views

How to run a jnlp app on 15.10

I have trouble running a java app starting with java WebStart. I do have icedtea-netx installed (1.5.3-0ubuntu0.15.10.1), but when I try to run the app, I get the following error: +(CONNECTED ...
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63 views

New Ubuntu Installation Freezing

Warning, I'm new here I've just installed Ubuntu 15.10 on an empty drive. I have another drive in the PC with a Windows 10 installation. Everything on Ubuntu runs fine, until I open an app. Both ...
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80 views

Why system hangs up while using multiple tabs on firefox or chrome?

as I work with multiple tabs, no matter its firefox or chrome. Ubuntu system hangs down. I have 2 gb ram. What should I do? should I change to Lubuntu?
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146 views

Firefox doesn't play sounds in Slack desktop notifications

I'm not getting sounds in desktop notifications, specifically for Slack. I've experienced this on multiple hardware. I ensured I have Notify-OSD installed and have enable desktop notifications in ...
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199 views

How do i use “Can YOU Run it”

I have used ubuntu for quiet some time now, but im having issues with this program i want to use. I recently build a new computer, and wanted to use ubuntu (because its great), the problem is, i want ...
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64 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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69 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, ...
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1answer
397 views

Proxy Authorization Required

I am using Ubuntu 14.04 LTS(64 bit) Problem I am not able to access internet due to failed proxy authentication process. I have specified a proxy server in FireFox -> Network ->Manual.. As soon as ...
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1answer
36 views

Problem With Cursor

I have run into a problem recently where I seem to be able to click outside of a text box on the screen. It's hard to explain, so I included the image below to help demonstrate the problem (see the ...
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29 views

Keyboard shortcut for 'add 1 to URL' in firefox

I'm not sure where the best place is to ask this. In Firefox, you can add bookmarks with the 'urls' of ...
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1answer
101 views

LibreOffice Writer Completely Crashes My Computer

Computer - Laptop | Dell Latitude E6410 | Memory 3.18 GiB | Processor Intel Core i5 CPU M 520 @ 2.40GHz x4 | Disk 241.9 GB Operating System | Ubuntu 14.04.3 LTS 32bit (Left unmodified/as downloaded.) ...
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312 views

Apache 2.4.10 VirtualHost index page not shown

To see my description of my problem directly, see the Problem part. Context: Running XUbuntu 14.10 and Apache 2.4.10. I'm quite new to Apache so I'm trying to setup simple VH...with some success ...
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1answer
24 views

Does apparmor in enforce mode still logs?

I'm using apparmor with Firefox (enforce). I know that leaving in complain mode, apparmor will log what a certain program is doing. But I would like to know if it's possible to turn the "enforce" ...
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92 views

Problems installing Wget for firefox un Ubuntu 14.04 (along with fireget extension)

I followed the the instructions in HOWTO: install Gwget and Fireget Firefox extension but when I'm trying to compile Gwget (using instruction in the INSTALL file) I have the following error messages ...
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50 views

PNG images are viewed by Firefox

General problem start with seting default application for viewing png files as a Shotwell. If your default image viewer is Shotwell Viewer, your PNG files will be opened with Mozilla Firefox. Why is ...
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449 views

Install/Enable Adobe Flash Player debug version in Ubuntu 14.04 for Firefox (if possible for Chrome too)

I found many different solutions similar to each other on the web, but obviously they are outdated. It's suggested to download the flash player from here https://get.adobe.com/flashplayer (Nothing ...
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1answer
53 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 ...
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185 views

Firefox is using too much memory and is freezing my machine

I have some 40 machines in our company. They are running Ubuntu 14.04 with 4Gigs of RAM. Very recently I noticed that almost on all machines Firefox browser is using around 1.2 to 1.5 GB of RAM and ...
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302 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 ...
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111 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 ...
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1answer
101 views

Apt-get Issues (and random crashes)

I'm running Ubuntu 15.04 (x64, i7, etc.). Everything has been working perfectly for a long time. However, this morning I was watching some videos online (YouTube) when Firefox crashed. I tried running ...
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334 views

Flash - Chrome Linux vs Chrome Windows

What is the difference between Flash in Chrome for Linux and Chrome for Windows? I am asking because in Ubuntu 14.04, Chrome will not play certain Flash-based live video streams (specifically ...
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205 views

Bangla font problem in blogger.com?

Could please anyone confirm me that the bangla fonts in any blogger site render correctly or incorrectly in their Ubuntu 14.04? Bangla fonts appear correctly in facebook.com and techtunes.com.bd ...
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1answer
145 views

Youtube/Downloading files eats all my bandwidth in Chrome

I'm using Chrome on Ubuntu 15.04 it works fine. Only problem is that when a download is in progress or i'm watching a video it eats all my bandwidth so I cannot open any other website until download ...
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1answer
2k views

Youtube videos on firefox not playing properly

I've reinstalled Ubuntu 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 video ...
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486 views

I have installed flash player but it's not working

I have install flash player for my firefox but it show me error To view this page ensure that Adobe Flash Player version 11.1.0 or greater is installed.
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1answer
159 views

Ubuntu is using a proxy although it's disabled in the settings

I have a problem with the proxy settings in Xubuntu 14.04 32-bit. Sometimes I need a proxy so I apply it to "/etc/profile", "/etc/environment" and "/etc/apt/apt.conf". If I don't need the proxy I ...
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1answer
119 views

Firefox doesn't start

I am on ubuntu 14.04, and when I try to launch firefox 38.0 it won't start up and I get this message: Your Firefox profile cannot be loaded. It may be missing or inaccessible. This is what I get ...
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1answer
737 views

Alternative to Flash Player for Firefox

I want to find an alternative to Flash for Mozilla Firefox. In Chromium I am using Pepper Flash which is great so I want to know if there is something similar for Firefox. I have found a lot of ...
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319 views

I can only install Firefox Developer Edition

I installed Firefox Nightly Developer Edition so I could contribute to some of their open source projects. I'd like to change back to the original. I've uninstalled Firefox using the following ...
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1answer
170 views

System unity crashed in ubuntu 14.04 LTS

I am using Ubuntu 14.04 and many systems connected to the network, all system has the same problem. Firefox and Thunderbird are not working and not showing Desktop. Unity automatically crashed and ...
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1answer
18 views

How to know when a mozilla bug will be fixed?

This is not a technical, but an admin process question. I am a victim of Mozilla bug 872869 (https://bugzilla.mozilla.org/show_bug.cgi?id=872869#c73), which I understand (by reading the bug at ...
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1answer
904 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 ...
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1answer
65 views

Problems on Kubuntu machine connecting to some sites after AT&T uverse upgrade

I recently had the U-verse service upgraded, and noticed that Facebook and youtube, and sometimes Yahoo have problems loading and displaying content. I am running Kubuntu 14.04 LTS, and using the ...
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1answer
769 views

How to download torrents using utorrent on your browser (firefox)

There is method for downloading torrents without opening actual program using browser. I just go to open firefox type in https://127.0.0.1:8080/gui/ After it I go to terminal and paste a command ...
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1answer
129 views

How to AUTO Open .doc files in Ubuntu FROM WEB

I am trying to open Microsoft.doc files from the Web however I am unable to do this. Here is a scenario of what I am currently experiencing. I go to website where I see .doc file; I click on File; ...
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1answer
326 views

Character encoding in Firefox

I installed Lubuntu 15.04 Vivid last week, making the first step away from Windows for me. I am running Firefox 38.0 (Mozilla Fifefox for Ubuntu canonical - 1.0). In Windows 7, when I loaded pages ...
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1answer
117 views

Turning off desktop integration in firefox

I used to be able to turn off the desktop integration in firefox by going to the general settings and unclicking the box that says "Prompt integration options." But I just reinstalled 14.04 on a new ...
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1answer
279 views

When Chinese ibus input is on, selecting text on Firefox textareas makes the text disappear

The selected text does not have be Chinese characters, any character just disappears. The problem happens both on: mouse drag ctrl + A selection methods. I installed the Chinese input through ...
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1answer
91 views

Firefox stuck on old version and problems with held packages

i did a clean installation of Ubuntu 14.04.2 2 months ago and i noticed recently that firefox was stuck at version 36. I uninstalled it and then the system showed version 35 as the latest. The same ...