Firefox Community Forum

I am using Firefox v140.0.1 Snap on Kubuntu 25.04, Kernel 6.14. Since the Firefox update in the past couple days, the mouse cursor has started appearing huge and slightly blurry (as though the image is scaled up) in Firefox and nowhere else. The size is visually annoying, and occasionally difficult to know exactly where I'm clicking (trying to move the caret in a text box for example). It also appears to be a different style from the main desktop cursor, the shape and color are ever so slightly different, but this may already have been the case and I simply didn't notice because of the previously small size. Firefox doesn't have its own built in cursor settings that I can find, nor obey the system cursor settings. I have a high DPI display so perhaps it is being over-compensated for? e.g. both the system and Firefox are scaling the cursor up, assuming the other hasn't done it already, resulting in a cursor that's too big.

1. 1. 1. 🔷 **Issue Summary:**

While using Firefox under normal conditions, the system **freezes completely** at random times. The desktop environment becomes unresponsive, requiring a hard reboot to recover. The issue typically occurs during heavier browsing sessions (e.g., video playback or graphics-heavy websites).

System logs (`dmesg` and `journalctl`) show **AMDGPU virtual memory protection faults**, indicating a GPU-related issue triggered during Firefox usage.

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1. 1. 1. 🔷 **Log Snippet:**

```text amdgpu 0000:03:00.0: amdgpu: VM_L2_PROTECTION_FAULT_STATUS:0x00641051 Faulty UTCL2 client ID: TCP (0x8) PERMISSION_FAULTS: 0x5 [gfxhub0] retry page fault (src_id:0 ring:0 vmid:6 pasid:32776, for process RDD Process pid XXXX thread firefox-bi:cs0 pid XXXX) ring gfx_low timeout, but soft recovered ```

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1. 1. 1. 🔷 **System Information:**

• **OS:** Linux Mint 22.1 x86\_64 (based on Ubuntu)
• **Kernel:** (e.g., `5.15.0-xxx-generic`) ← *replace with actual kernel version*
• **CPU:** AMD Ryzen 7 5700U with Radeon Graphics
• **GPU:** AMD ATI 03:00.0 Lucienne (integrated)
• **Firefox Version:** (e.g., 126.0) ← *replace with actual version*

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1. 1. 1. 🔷 **Steps to Reproduce:**

1. Open Firefox and browse modern websites (YouTube, media-rich content). 2. Use the browser for several minutes (random trigger). 3. Suddenly, the system UI becomes frozen and unusable. 4. Logs show AMDGPU VM fault and `gfx ring timeout`.

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1. 1. 1. 🔷 **Expected Behavior:**

System should remain stable during normal browser usage, especially with an officially supported AMD APU.

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1. 1. 1. 🔷 **Actual Behavior:**

GPU driver crashes causing total system freeze, likely triggered by hardware acceleration and memory permission faults inside the amdgpu driver stack.

export GDK_BACKEND=x11 MOZ_ENABLE_WAYLAND=0 MOZ_DISABLE_WAYLAND=1; /mnt/bootdrive/firefox3/firefox/firefox -P tx1p72s0.dev-edition-default XPCOMGlueLoad error for file /mnt/bootdrive/firefox3/firefox/libxul.so: /mnt/bootdrive/firefox3/firefox/libxul.so: undefined symbol: gdk_wayland_device_get_wl_seat Couldn't load XPCOM.

Has support for X11 been removed?

In the last few days, after some minutes of usage, parts of Firefox become unclickable:

- I can still click on tabs to change tabs. - When hovering over the cross button to close a tab, it changes appearance as it should. Clicking the button does nothing. Ctrl+w still closes the button. - Clicking on the address bar does nothing. - Cannot click on back, forward, refresh buttons. - Cannot click on any add-ons. - Cannot click on preferences. - Can click on the button to open a new tab. There, I can enter an address. Once the page has loaded, address bar becomes unclickable again. - Bookmarks toolbar is still working as expected. - Keyboard shortcuts (ctrl+t, ctrl-w, ctrl-l) still work as expected.

I'm running ``` Mozilla Firefox 138.0 20250428130755 20250428130755 ```

on Manjaro 25.0.1 with GNOME 48

I have an Arch Linux installation with Plasma desktop. Software is always kept up-to-date. Sometime recently, Mozilla apps, Firefox nor Thunderbird, will no longer print, neither to pdf nor to network printer. These always worked before. Now, if even "print preview" is invoked, the dialog opens as a blank sub window with only the word "Print" in upper right, and at left center is "Preparing Preview with rotating time delay wheel, which never resolves. All other apps, including other browsers and mail handlers, will print without issue. I've tried the obvious checks with no success. Where could be the problem? Is there a helper app shared by Firefox and Thunderbird that could be the issue? The only potential remedy I have not yet tried is complete removal of both Firefox and Thunderbird, as that would cause re-configuration issues for both. It's necessary to press <ESC> to terminate the print window when it fails to respond. Screenshot attached...

To preface this, I am not sure if this is caused by my OS (Ubuntu 24.04) or by the way Firefox tends to work on Linux as other issues have been (and therefore, might be resolved with a change in about:config).

Problem: When I download a file and download another one right after that one, the window showing the folder I am choosing to download to won't show the file/image preview of the file I just downloaded before; it only shows the correct preview once I have opened the file manager on my OS; after doing that the file preview is up to date again. (basically, it only shows the correct file preview when I viewed the files on my desktop before opening the download window and will not keep up to date with the most recent changes on its own like it does on Windows for example)

I'm attempting to sync my account between a Windows host and a Linux host. Logging into my account on Linux brings up a "Authorize this sign-in" window that demands entry of a 7-char "Authorization Code" (not the same as a six-digit authentication code) which is emailed to me. After entering the authorization code, a window appears stating "Bad request - Something went wrong. Please close this tab and try again." This happens consistently, and only on the Linux host. Firefox 134.0.2 mint-001 1.0. Linux Mint 22.1. Any ideas about what went wrong?

On the Save Page As dialog on Linux, how do I edit the choices of where to save?

The stock options are Home, Desktop, Documents, Downloads, Pictures, Videos, and + Other Locations.

I don't use most of these directories, but I do use two dozen others. Navigating to them using Other Locations is painfully slow; it would be ok if I could then save the location I've navigated to, but I haven't found a way to do that, and clicking one path element at a time for 6 element paths over and over gets old quickly.

Typing the path I want either nukes the default filename, or else it tries to match the filename string from the URL in the target directory, which doesn't show me existing directory contents.

Thanks for any clues...

Running Linux-Mint on my laptop. Trying to run an epson ET-2400 ink jet Printer. Need Driver for printer. I have seen some information about software that needs to be added to "talk" to the printer but I cannot find it now. Please someone help.

Installed Firefox 138.0+Linuxmint1+Virginia as an update on my Linux mint computers, and now the bookmark toolbar is gone. I have right clicked the menu bar and set Bookmark toolbar to "always show", but it does not show. I have gone into settings as well. What did version 138.0 do with my bookmark toolbar?

Hello!

 Since some days I have the problem that all files I download from outlook are accompanied by a preceding UTF-8 in the file name. This is not the case for e.g. google chrome. Can I fix this problem by myself, or is it a general problem of firefox 128.9esr (64-bit)?

I'd been trying to download 2 large files from Icann and kept getting premature completion with Firefox. It would be showing ##MB of 356MB downloaded for a few seconds and then out of the blues it just says completed. As you can see in the shared video, I've tried this several times.

I thought that maybe one of the Firefox addons was causing the issue so I tried Troubleshoot Mode but that resulted in the same behavior.

I then went into Firefox Profile Manager and created a new profile. But that too had the same behavior - 🤔!

So I then tried Chromium. It completed the download successfully and the file passed gunzip test.

So, why is Firefox, even with a new profile, failing to complete a download?

See this video: https://youtu.be/UCYQtxljqXs

I am experiencing an issue with the Picture-in-Picture (PiP) functionality in Firefox on Ubuntu. Unlike on Windows, where the PiP window automatically appears when switching tabs or pages, this does not happen on my system.

When I manually activate the PiP feature by clicking the button, the window does appear; however, it is placed behind the browser window and remains at the lowest level among other open windows. This causes it to be obscured by other applications and requires me to manually bring it to the front and adjust its position every time.

Is there a way to automate this process or resolve the issue so that the PiP window behaves as expected (i.e., stays on top of other windows and works seamlessly)? Please let me know if there are any settings, extensions, or workarounds that could address this problem.

Thank you in advance for your assistance!

I'm attempting to set up Firefox in a newly installed OS and have logged into my Sync account. Many aspects seem to be loaded in, but the status via the Settings is stuck at "Syncing..." despite waiting several hours. Quitting Firefox results in a crash window popping up.

There are no files in the weave/logs directory. The weave/failed directory has multiple json files; most almost completely empty. addons.json has an ID, but that's pretty much it.

Deleting the .mozilla directory and starting over yielded no change in behavior.

Any help would be appreciated. Thank you.

I run Firefox under Linux Mint. Both are always update to the latest level. Over the past 1 to 1.5 years, across updates to both Firefox and Mint and multiple 'clean' installs of Firefox, I have experienced many crashes from Firefox per week. Sometimes there will be as many as 5 per day, but never less than one per day. During the same period I have also been running Vivaldi; it has not crashed once in that time. Now I have to do something. If there is a simple way to perform 'problem source identification', that is within my capability, I would be grateful for advice. If there is not, then clearly I will have to un-install Firefox.

As far as I can tell both of these browsers run with just 1 add-on/extension: uBlock Origin. Disabling this extension in Firefox does not stop Firefox from crashing.

Is this a bug or config problem?

Occasionally, FF (Linux desktop) starts using a lot of memory. I kill tabs (sometimes it is OK to kill YouTube or X, sometimes not)

Eventually it starts impacting the system using so much memory. I terminate the FF instance. Often. More often than not. There is a separate task still running and I get the "Firefox is still running" when I try to restart. I then kill the remaining FF task via the OS or the process monitor. Then FF restarts.

Is this an issue with addons (I am running very few - uBlock Orign, and Privacy Badger and Cookie AutoDelete. Are the only ones active most of the time) Or is it an actual bug with garbage collection, and tasks getting away? Or is it an OS issue?

I was trying to go to ssa.gov, today, and hit the button to login. When I did that, I got a 400 page saying: Bad Request

Your browser sent a request that this server could not understand. Size of a request header field exceeds server limit.

I have done this before, and it worked. To test if it was a problem with the web page or the browser, I did it from another browser (Brave), and it loaded fine. Is Firefox sending a bad request? Is this something you can fix.

I am using Mozilla Firefox for Linux Mint 137.0.1 (64 bit).