Problems with Firefox permissions in Ubuntu 18.04

I am trying to make Firefox start streaming every time I click on a magnetic link. I followed the instructions at and managed to successfully obtain the window & # 39; Start application & # 39; when I click on a magnetic link. However, when I try to navigate to the Transmission directory to select it (which in my case is in /usr/bin/transmission-gtk), Firefox throws an error right after trying to access /usr. The error says "Could not read the contents of usr. Error opening directory /usr: permission denied"Here is a screenshot that shows the error:

Permission Error

I'm not a permit expert, but apparently /usr/ It is owned by root and everyone else has read permissions; this is what ls -l / Returns:

drwxr-xr-x  12 root root       4096 ago 15 23:23 usr

Firefox processes are also my property (hulahop is my username), according to ps aux:

hulahop  23113  8.1  4.1 3456980 684420 tty2   Sl+  ago15   2:18 /snap/firefox/243/firefox

There are other secondary processes but its owner is the same user. How could I have Firefox forward magnetic links to Transmission? I am running Firefox 68.0.1 (64 bits) on Ubuntu 18.04 LTS. Firefox was installed directly from the Software Center and its permissions are configured as follows

Firefox Software Center permissions

Another problem I have with Firefox, which I suspect could be related to the previous one, is that Webgl pages no longer work. I have webgl enabled by force within the about:config page (as indicated at, but still nothing. I am sure that it is not a problem related to my graphics card or its drivers, since the pages with webgl technology work perfectly in Chromium, which is also installed on this computer.

The funny thing is that Firefox used to work fine until (I think) the certificate expiration scams that killed all the add-ons a few months ago. Prior to this, you could use the 3D satellite view of Google Maps without problems (which requires webgl) and handle magnets correctly with Transmission. But when that certificate expired, I had to replace Firefox with the Nightly version for a few days, then return to the stable version, and a few weeks later I began to notice all these problems …

Does anyone have any ideas? Any help will be greatly appreciated.

Thanks and best regards,

PS: Another fun thing: I just discovered that I really can't change the permissions defined for Firefox in the Software Center. Every time I press any of the switches, I am asked for the root password, and then I can change all the options I want. But when I close the window and open it again, I don't see any of the changes I made … My Ubuntu is terribly broken, isn't it?

html – Firefox CSS animations broke

After updating to the latest version of Firefox, I have problems with my CSS animations.

On my website I have animated buttons where the gradient is animated through the asset.

This works fine in Google Chrome and worked fine in Firefox until I updated my version of Firefox.

On this page you can find one of the buttons that should be animated: the Add to cart button is animated in Chrome but not in Firefox: /

The code I am using is below for one of the buttons. (add to cart button)

.single-product div.product form.cart .button {
    color: #fff;
  background: -webkit-linear-gradient(180deg,#1b8c0f, #c2cc36, #1b8c0f);
    background: -moz-linear-gradient(180deg,#1b8c0f, #c2cc36, #1b8c0f);
    background-size: 400% 400%;
    animation: BackgroundGradient 10s ease infinite;
    -moz-animation: BackgroundGradient 10s ease infinite;
    -webkit-box-shadow: inset 0 0 0 0px #ff3366;
    -moz-box-shadow: inset 0 0 0 0px #ff3366;

.single-product div.product form.cart .button:hover {
    color: #fff;
  background: -webkit-linear-gradient(180deg,#1b8c0f, #c2cc36, #1b8c0f);
    background: -moz-linear-gradient(180deg,#1b8c0f, #c2cc36, #1b8c0f);
    background-size: 400% 400%;
    animation: BackgroundGradient 3s ease infinite;
     -moz-animation: BackgroundGradient 3s ease infinite;
    -webkit-box-shadow: inset 0 0 0 0px #ff3366;
    -moz-box-shadow: inset 0 0 0 0px #ff3366;
    transition: all .2s ease-in-out; 
    transform: scale(1); 

@keyframes BackgroundGradient {
                0% {background-position: 0% 50%;}
                50% {background-position: 100% 50%;}
                100% {background-position: 0% 50%;}

@-moz-keyframes BackgroundGradient {
                0% {background-position: 0% 50%;}
                50% {background-position: 100% 50%;}
                100% {background-position: 0% 50%;}

I am not sure why this does not work after updating Firefox. If you open the page in Chrome and Firefox, you will see that the animation works and does not work. Any help will be appreciated since I am not sure what could be wrong here.

Disable MAC quarantine to distribute custom Firefox ESR over the network

I am preparing the ESR compilation of Firefox with custom default add-ons. The problem is that after following the instructions of and:
1. Upload custom to the cloud server
2. Download it to the client machine
It cannot be executed until the terminal "quarantine" is manually deleted with (the same step required to edit the container)

xattr -r -d

But it is assumed that this ff with the addon must be used by administrators and it is very likely to avoid this technical step. This compilation is executed without quarantining any machine if the quarantine was deleted and the application was copied from, e.g. usb drive (seems expected for me)

So, is it possible to evade custom ff so that it is & # 39; quarantined & # 39; after download?

I can't play videos on Facebook and other websites using my ubuntu 18.04 Firefox 2

I have a problem here, I am installed Ubuntu 18.04 and now, as a normal human, I use Facebook, but the videos do not play with me.

I tried to search and find some solution, but I didn't find anything that would work with me … so what is the solution for this problem?

9.0 foot – Android Firefox notification

In the Firefox application for Android, some sites make Firefox show a great notification. This notification is made up of the site title and a "playback" icon (triangle), as if the site were playing sound or a video, which is not the case.

In addition, this notification cannot be deleted, and it remains after the website tab closes! Forcing Firefox to exit removes it.

Is this a known error?

firefox – Different startup behavior strainge

Firefox Portable behaves differently depending on the start of the application
normal (run FirefoxPortable.exe)

  • using a link provided, for example, from an email or other document
  • neither the bookmarks toolbar nor extensions are available

Usual Firefox behaves as expected.

It should be easy to fix, if you know how.
Thanks in advance for comments

OS: Windows 10 Pro
SW: Firefox Quantum 68.0.1 (64 bit) Portable Edition

I am new to the forum, therefore, I apologize in advance

firefox – Bookmarklet to load URL, wait until it loads, then finish executing

I'm quite new to bookmarklets, but I'm trying to create a bookmarklet that does the following:

  1. Upload a web page by URL
  2. Wait until that page loads
  3. Upload a second web page by URL

The reason for this is quite obscure; At work we have a very temperamental captive network that expels us every time the computer falls asleep. I would like to configure my homepage in Firefox in a bookmarklet that first loads a simple http page to verify if Internet access has been established, then redirects to my "true" homepage (Google).

(This is unfortunately necessary because Google implements HSTS, so simple http bookmarks are forced to https and cannot be redirected to the captive network login page.)

This is what I have so far, but it doesn't work properly:

window.location = "";

function checkLoad() {
    if (document.readyState === "complete") {
        document.location = "";
    } else {
        setTimeout('checkLoad()', 100);

Any help would be greatly appreciated.

How do I programmatically change configuration preferences without restarting Firefox?

With GCLI, this was as simple as

pref set  

Loading a user.js File requires restart Firefox. I want to toggle the round trip configuration in a single session.

Can I get rid of the search engine suggestion in the Firefox omnibar?

I would like to get rid of the suggestion when I write in the Firefox omnibar. I got rid of the suggestions for my non-default browsers, but it still appears with a blue bar that only repeats what I'm writing in the omnibar, plus a message that says "search with google".

Can I get rid of that box completely? I wonder if it is possible to edit the userChrome file.

firefox – Ubuntu 18.04: Permission denied: .ipynb_checkpoints when trying to create a new python3 notebook in jupyter

I am starting the jupyter laptop from the terminal and I am not using anaconda.

When I try to create a new python3 notebook, this error message appears:
error screenshot

I have tried the method in

However, the problem still persists.

Any help would be greatly appreciated.

Thanks in advance.