Firefox Support Forum

On Ubuntu, drag and drop has broken for me. My mouse cursor does not seem to react to different types of content, like hovering over links. My main problem is that if I highlight a piece of text, or some other content block on a page, and drag it, it does not work as smoothly as it should.

Has anyone else experienced this recently?

I find closing Firefox helps temporarily but within 10-15 minutes the same problem occurs.

I have re-installed Firefox and I am running the latest version. I haven't experienced the problem in Safe Mode.

It only occurs on Firefox and is browser-wide.

Hello, Firefox friends!

I'm having some issues with Firefox on my Ubuntu system and I'm really hoping someone can help me fix them.

   Problem with Downloads: When I try to download something and click on a link, a new tab opens. But then it immediately closes and nothing downloads.

   Button Issues: Some buttons within Firefox just don't seem to work.

I've tried a few things already:

   Checked for Firefox and Ubuntu updates
   Ran Firefox in Troubleshoot Mode
   No antivirus because I'm on Ubuntu

If anyone has faced similar issues or knows how to fix this, please help!

Thank you so much!

I am going through the https://support.mozilla.org/en-US/kb/containers#w_manage-your-containers page and I dont have the option to add new containers when I click on the icon. I am only shown the choice to open the current page into one of the default containers. If I open a new empty tab, this icon doesnt show up in the url bar.

I have gone through the manage extensions options as well and I cant find a similar option. Can anybody point out what I am missing?

Operating System : Ubuntu Lunar Lobster (23.04) x64 Firefox version : 116.0.3 (64-bit) installed via snap

Firefox worked perfectly, but since a few days I can't download anything. I'm using Mozilla Firefox snap for Ubuntu 22.04, version 110.0.1 (64 bits) canonical-002 - 1.0 With Chrome everything works perfectly so I assume it's a problem from Firefox.

When I open a PDF, a MP3 or any file, the "save" option doesn't display anything. Usually it opened a dialog where I could choose the folder where I wanted to download the file, but now I have nothing.

I have only 4 extensions: - adblocker ultimate - duckduckgo privacy essentials - vuejs dev tools - zotero connector

I always had them and I never encountered any problem.

Firefox will no longer display the main window. I get an icon in my taskbar but the window is nowhere to be found. I've tried the tricks of maximizing it and moving it but neither works. I have found that if I locate the xulstore.json file it will work but only for a short time. Next time I start Firefox I get an icon but no window. Very frustrating!

The sulstore.json file contains nothing that suspicious:

``` {"chrome://browser/content/browser.xhtml":{"main-window":{"screenX":"2129","screenY":"777","width":"1280","height":"1040","sizemode":"maximized"},"sidebar-box":{"sidebarcommand":"","style":""},"sidebar-title":{"value":""}}} ```

If I start Firefox and right-click the icon, select maximize it's as if it's maximized covering all my windows but yet invisible. I can see my other windows but I cannot interact with them.

Deleting the xulstore.json file often fixes this but it breaks again shortly. What's the deal???

Using either the SNAP or .deb versions of Firefox on Ubuntu 22.04 I am running into issues attaching files on remote systems. I can browse to mounted network drives and select files but when clicking open nothing is attached in any of my online email accounts. This also applies to the open dialog box. I have tried using the KDE File Picker as well as the GTK one but they both fail. This is not an issue for LibreOffice or other programs and greatly impacts the usefulness of Firefox.

When browning some site will cause a Firefox to freeze, all UI stops working, if I try and reload the page nothing will load and if I try and close and reopen Firefox I get a zombie process that last for about a minute. Obviously this is with no ad dons or hardware acceleration and nothing is listed at about:crashes. The only useful tip I have comes from the command prompt. First when the freeze is first triggered I get the errors ``` MESA: error: Failed to query drm device. libEGL warning: egl: failed to create dri2 screen MESA: error: Failed to query drm device. libEGL warning: egl: failed to create dri2 screen ``` and when I try and open it after a freeze and there is still a zombie Processes ``` [Parent 111218, IPC I/O Parent] WARNING: process 111455 exited on signal 15: file /build/firefox-RH6krf/firefox-115.0+build2/ipc/chromium/src/base/process_util_posix.cc:264

``` and finally when it kills the zombie processes ``` RunWatchdog: Mainthread nested event loops during hang:

--- CanvasManagerParent::Shutdown

ExceptionHandler::GenerateDump cloned child 111871 ExceptionHandler::SendContinueSignalToChild sent continue signal to child ExceptionHandler::WaitForContinueSignal waiting for continue signal... ``` the included images are what pops up when trying to open Firefox when it still has a zombie processes and when it kills the process

I'm a Chinese user, and all my firefox account in other devices( windows10, IOS) was login in page https://accounts.firefox.com.cn", but using firefox in ubuntu, it was redirect to https://accounts.firefox.com. Even i login with the same e-mail, the data can not be syn, and i have known the reason was there are two different server for Chinese.

But i need a way to syn data in Ubuntu, please tell me how to deal with that. 3Q !

I am having trouble to open firefox browser for ubuntu 20.04(focal). I have also delete mozilla folder from cache and then reinstalled again. I have tried to rename profileini file. Finally I have uninstall and install using terminal by "sudo apt install firefox" but still I am getting this error "Your Firefox profile cannot be loaded. It may be missing or inaccessible".

How to resolve this.

Thanks in advance.

Hello Volunteers,

Ubuntu crashes while moving around a Firefox tab with a mouse, IF the mouse cursor goes thru the top bar of the laptop screen. I am using Firefox V 113.0.2, Build ID: 20230522193126 on Ubuntu 23.04. This could be an Ubuntu problem or a Firefox problem.

Thanks Dilip Deodhar

I want to attach a file and I click on a button (everything works perfectly on Chrome). When I click, in the console I get this error:

(firefox:3264): Gtk-WARNING **: 13:52:46.781: Can't open portal file chooser: GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: L’interface « org.freedesktop.portal.FileChooser » n’existe pas pour l’objet à l’emplacement /org/freedesktop/portal/desktop

Of course, nothing happens when I click. I have Ubuntu 22.04 and apparently Firefox in installed with snap, and I have this problem since snap is used to install Firefox.

If it's useful:

snap list Nom Version Révision Suivi Éditeur Notes bare 1.0 5 latest/stable canonical✓ base code b3e4e68a 129 latest/stable vscode✓ classic core 16-2.58.3 14946 latest/stable canonical✓ core core18 20230503 2751 latest/stable canonical✓ base core20 20230503 1891 latest/stable canonical✓ base core22 20230503 634 latest/stable canonical✓ base firefox 113.0.2-1 2710 latest/stable mozilla✓ - gnome-3-38-2004 0+git.6f39565 140 latest/stable/… canonical✓ - gnome-42-2204 0+git.587e965 102 latest/stable canonical✓ - gtk-common-themes 0.1-81-g442e511 1535 latest/stable/… canonical✓ - snap-store 41.3-71-g709398e 959 latest/stable/… canonical✓ - snapd 2.59.2 19122 latest/stable canonical✓ snapd snapd-desktop-integration 0.9 83 latest/stable/… canonical✓ -

This message is the last I'm writing before I definitely move to Chrome. I hope I'll get the help I couldn't find on other places (I saw a lot of answers telling to deactivate snap, adding a ppa or some solutions like these).

Summary: Firefox fails to load many sites, and some will kill the entire browser.

I recently updated from Ubuntu 22.10 to 23.04, which included an upgrade to Firefox. I originally had trouble with tab/window dragging operations causing the entire desktop to crash.

Removing the snap and installing from the Firefox maintained PPA fixed this issue, but a number of others remain. (Detail on this part over here on the ubuntu forums if interested)

Now many google sites simply show the loading error for ever and never recover. Some URLS can kill the browser completely. For example, this one from the Mozilla website: https://support.mozilla.org/en-US/kb/websites-show-spinning-wheel-never-finish-load The error message is attached.

I am happy to perform more tests and provide more diagnostic if it will help. That same URL works fine from the chromium browser on the same desktop systems,as does every other site I've had issues with.

System details: Ubuntu 23.04 64 bit Firefox 113.0.2 Intel_R_ Client Systems NUC7i7BNH (Intel® Core™ i7-7567U) Intel® Iris® Plus Graphics 650 (Kaby Lake GT3e) (KBL GT3) Gnome 44.0 Wayland WS

I use Firefox on Ubuntu 22.04, and my system has 16GB RAM. I have been facing this problem of frequent crashes for the past few months. By crash, I mean not Firefox alone, but the entire system. I use several apps and run several processes that require great compute resources, often simultaneously. I have narrowed the cause of frequent system crashes to Firefox alone; the system rarely crashes when I use other resource-heavy apps. Due to this, I have to restart my system several times a day.

Before this problem arose, I would use multiple tabs (including YouTube, often 10+, close to 20) and multiple windows (2+). Such usage very rarely caused crashes, which is why it is surprising that Firefox now causes the entire system to simply hang sometimes with as low as 3-4 tabs.

I have disabled Hardware Acceleration, refreshed Firefox, even tried disabling WebGL. I also tested it after removing all add-ons, but it still didn't help (I use only 2 add-ons: a simple wide-spectrum ad-blocker and an EPUB reader). Even in troubleshoot mode, Firefox will cause my system to heat up, although it takes some more effort to crash in this case. I use one of the standard themes, so it could not have been the problem.

Many people report Firefox crashes, but in my case, Firefox causes my entire system to crash. How do I fix this issue? Thank you in advance.

I am running Ubuntu 18.04 and the current version of firefox is 112.0.1. The problem has occurred on two different machines.

My Friday routine normally involves updating my computers. Normally, I start firefox and get some preliminary work things out of the way before using sudo apt-get update/upgrade (sudo apt update) to update my system.

However, firefox has interjected and updated itself twice in the past month or so. When it says it has done the update and needs to be restarted, I click the button and it restarts. This would not be a problem since it was going to get updated anyway, however, when I go to start sudo apt-get upgrade to update the rest of my system, I get the following error:

E: Could not get lock /var/lib/dpkg/lock-frontend - open (11: Resource temporarily unavailable) E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), is another process using it?

This lock traces back to firefox and persists for several hours. The first time I assumed something weird just happened resulting in the lock not being released when firefox restarted after its update. However, since this is the second time that it has happened there is something going on with your updater not releasing properly. Normally, the lock is released immediately after the updating software is finished updating, however, this is not the case with firefox right now.

Please fix this bug.

Hello all,

For some reason, I can no longer upload or download files, with the pop-up window failing to appear entirely. I can upload folders through, for example, Dropbox or Google Drive, but individual files don't work.

I've reset my browser, uninstalled and reinstalled it, opened it in troubleshooting mode, disabled enhanced tracking protection, but nothing seemed to work. I've tested another browser, and I was able to upload and download files just fine.

Is there anything I can do to fix this? I'm on Ubuntu 22.04 using Firefox 107.0.1.

Hi, I have firefox on my Ubuntu 23.04. When i start it it shows a black screen. I click quit on my system and then i startup and it lunches normally. What am I doing wrong or how to fix it?

Hi, I've been struggling with this for months and can't find an easy solution or a good explanation. I'm running Ubuntu 22.04 pretty basic, I don't have many custom repositories enabled or anything, just a few additional packages like slack, Teams or Chrome. Ubuntu switched Firefox to snaps as well, and I can't get internet access with it. The error message is:

--- May 12 12:16:20 nuc kernel: [12948.381392] audit: type=1400 audit(1683886580.562:131): apparmor="DENIED" operation="open" profile="snap.firefox.firefox" name="/etc/fstab" pid=7731 comm="firefox" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0 May 12 12:15:43 nuc rtkit-daemon[1030]: message repeated 3 times: [ Supervising 10 threads of 4 processes of 1 users.] May 12 12:16:20 nuc dbus-daemon[790]: [system] Activating via systemd: service name='org.freedesktop.hostname1' unit='dbus-org.freedesktop.hostname1.service' requested by ':1.175' (uid=1000 pid=7731 comm="/snap/firefox/2645/usr/lib/firefox/firefox " label="snap.firefox.firefox (enforce)") ---

Simply stopping (and aa-teardown) doesn't work at all, Firefox doesn't even start without apparmor running. I'm not an expert with apparmor, but I wanted to set in complain mode instead enforce, but I'm struggling with that, too. I didn't touch the /etc/hosts file, the error message is a little different on another Ubuntu 22.04 computer I use, there it complains about permission denied for the resolve.conf. So I'm asking the community, how do you deal with this? Searching the web gives me all kinds of ideas, but none of them work. Could anyone help me out here?

Thanks!

Hello, I would like to report an issue with Firefox 113.0 cannonical-002 1.0 on Ubuntu 22.04 lts. When opening 5-8 tabs, the browser consumes a lot of memory. When the system's RAM usage, along with the browser, reaches 80% of the computer's memory capacity (12Gb is the full size of the machine RAM), the browser crashes without generating any crash reports and does not restart itself. Interestingly, using the same browser on the same hardware, but on another OS, Windows 10 with the latest stable version of the browser, with the same themes and add-ons, the issue is not observed, and memory usage is much lower.

Could you please suggest a solution to this issue and help prevent these crashes from happening?

Thank you for your time and assistance.

I can't get Firefox to use some custom cursors. Firefox is only recognizing the cursors that came installed with Ubuntu. Any of the cursors I installed will default to DMZ-White, but Firefox is using those cursors that came installed with Ubuntu. I tried defining the default cursor in /usr/share/icons/default/index.theme but did nothing as well. Also I tried with the cursor in /usr/share/icons and in /home/name/.icons and firefox cannot get in any of those.

I don't know if it's something wrong with my cursors or it's some inner thing with Firefox, any one has a guess? Incompatibility or something missing from the cursor?