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I am on Linux Mint 21.2, and I just updated Firefox (141.0). Now, the bookmarks bar, toolbar, and the tabs (everything above the displayed page), as well as the menu, bookmarks menu, and sidebar, are in light mode even though I have dark mode set (They were dark before the update). I tried playing with the Dark Mode settings to no avail. My system is set to dark mode in general. Are others experiencing this? Is there some sort of fix?

Twice in the past 2-3 weeks I have had to restart the computer, Linux Mint 21.2 Firefox 124(when updated in the past couple of days), due to the mouse freezing up and not being able to move the mouse on the screen. That's not the current problem, but it might help direct things to the final solution.

After the most recent reboot last night now I'm having a rather problem. The up/down arrow keys are no longer scroll me up and down a webpage like they always have in the past. Instead of doing smooth scrolling like they always use to, now they are scrolling me up and down the links on a web page. For example, if I were to be on youtube it would first want to scroll me down the left side links before taking me through each and every video link, when the page goes to load in more videos than it wants to go back and scroll me down the left side links again. It acts like it is taking me through the html code, line by line, instead of scrolling me smoothly down the webpage. The only way I can scroll smoothly down the webpage is to use the mouse on the scrollbar on the right side. It does this both in normal mode and in Troubleshooting Mode.

I have checked and beret scrolling is false as well as beret_shortcut. Use autoscrolling, use smooth scrolling, show scrollbars and always underline links are all clicked on. Always use the cursor keys to navigate within pages is unclicked. I have tried different changes between clicking on and unclicking those options with no change being noticed.

How can I get this back to the way it used to run?

Sync is a nightmare. It is so unintuitive! What exactly would be wrong with having separate Export and Import buttons for each of Settings, Addons, Tabs, History, Bookmarks, etc? I have a desktop box and a newer laptop I wanted to get up to date. I pressed the Sync button on the desktop ... By the way, there`s a link below that reads "Connect another device" ... Connect where? Someone is designing these interfaces who has absolutely zero imagination. Anyways, I signed off, moved the ethernet cable to my laptop, signed in, pressed Sync, and voila!, I got my Bookmarks, at least. But I have no idea how to get my tabs and windows. I tried with a "download link" something or other, but it seemed to assume I was sync-ing to a phone, and didn`t work. Any way to get my tabs?

Hi all,

For quite a while I'm working together with others on a voluntary base (nobody gets money) as members of a computer-club, a charitable NGO and NPO (in German: gemeinnütziger Verein) for seniors in order to bring them closer to the use of digital devices and media. It's not only teaching, but administrating the hard- and software as well.

I can remember that it was possible in former versions of Firefox to include at least a script into "defaults->prefs". I think it was user.js (not sure) in the installation folder to define common preferences to be fixed, like proxi settings. It always worked well, preventing non-privileged users from making any unwanted changes. As a I found out there must have been a very similar way to include add-ons (like uBlock Origin).

Unfortunately all content I found was older than about 10 years. When trying setting up Firefox as it is now, my test system didn't care about anything I've tried.

I'm talking about > 50 Windows-PC having in average 3 user profiles each (for teaching more than 400 members). We are amateurs regarding PC administration, except some network ex-professionals. "Baking" installation media including our needs, as I already found on Mozilla's pages, seems to be beyond our abilities as well as distributing a fitting profile (we don't have a MS-server), not speaking about Group Policies.

Is there any usable guideline for people like us? Today, each FF-installation looks different and I would like to unify this as easy as possible.

I have the latest Firefox installed on Linux Mint. But in Firefox privacy settings there is no longer a way to choose browsers. It just says "Firefox is currently your default browser". But every time I do a search, it automatically search with Google. That never never happened until I installed latest Firefox. If Firefox is forcing me to use Google, that why do I need Firefox?? Please explain?

Thanks much for your time

Recently Mint upgraded my FF to v147 - possibly relevant, possibly not. There's no post mentioning anyone having this issue on the Mint forum though.

In my Settings, "Open previous windows and tabs" is definitely enabled, but it doesn't happen. I only get my homepage custom URLs.

I went into troubleshooting mode and FF then behaves.

So I figured the issue must be with an extension - but I disabled all my extensions, and it doesn't help. Only going full troubleshooting mode fixes it.

What do I do next please?

Saying "you can turn off the AI" is NOT enough, Mozilla. Nothing is ever "turned off" unless it's completely removed. This is Microsoft's playbook BS; "but you can turn it off", but for some reason the system is always using a metric ton of memory, lagging and whatnot. You, of all companies, should know this and be better than that. Nothing good is ever force-installed and impossible to remove. Unless you all make it installed completely separately so people like me, who are a significant part, if not most of your user base, can not install it, nothing short of a full renunciation of the CEO will suffice to make we trust you again.

"Internet for People, not profit" is seeming more and more like blatant false advertising every day.

Firefox 136.0.1, Linux 6.8.0-55, have set Okular as default pdf application, however Firefox will not open pdf file when downloaded nor will it open the file when selecting Open File from the Download Icon on the toolbar. Only was I can get to file is to select Show in Folder option and open from within Dolphin.

Hello,

After upgrading my Thunderbird install to version 60.2.1 on my Xubuntu 18.04 machine, I cannot access my mail anymore, because there seems to be a problem with passwords.

Symptoms:

- When starting Thunderbird, I get an "Enter your password" box for each of my accounts even though I had my passwords saved.

- When I go to Preferences -> Security -> Passwords -> Saved Passwords, the list is empty.

- When I try to enter a password and save it, it does not actually get saved and Thunderbird will ask again soon after.

- The following line is logged to console a whole bunch of times:

JavaScript error: jar:file:///usr/lib/thunderbird/omni.ja!/components/crypto-SDR.js, line 179: NS_ERROR_FAILURE: Couldn't decrypt string

Other findings:

- Downgrading Thunderbird to 52.7.0 fixes the problem. The old saved passwords just reappear again and Thunderbird has no problem logging in.

- Starting Thunderbird 60.2.1 on a Windows 10 box with exactly the same profile folder works fine. It can read the passwords and access my mail accounts.

Can you please tell me what to do to fix this, so I don't need to keep using an old version of Thunderbird just to access my mail?

Thanks,

I use Firefox-Dev(129.0b9 (64-bit)) and Firefox (128.0.3 (64-bit)) as default browsers on my Gentoo Linux system with an Intel i7. Both Firefox-Dev and Firefox crash will visiting some websites. Especially Google maps. I have a Gentoo Laptop with and i3 where I run both Firefox-Dev and Firefox and things run fine. I have more software installed on the Intel i7. Video cards ar different of course.

Here is my ldd: opt/firefox $ ldd firefox linux-vdso.so.1 (0x00007ffc8e584000) libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f0161fe7000) libc.so.6 => /lib64/libc.so.6 (0x00007f0161e08000) /lib64/ld-linux-x86-64.so.2 (0x00007f0162007000)

Here is the crash report: AdapterDeviceID: 0x6613 AdapterDriverVendor: mesa/radeonsi AdapterDriverVersion: 24.1.3.0 AdapterVendorID: 0x1002 Add-ons: formautofill%40mozilla.org:1.0.1,pictureinpicture%40mozilla.org:1.0.0,webcompat-reporter%40mozilla.org:2.1.0,webcompat%40mozilla.org:129.3.0,default-theme%40mozilla.org:1.3,addons-search-detection%40mozilla.com:2.0.0 AvailablePageFile: 98520420352 AvailablePhysicalMemory: 57304293376 AvailableSwapMemory: 68719472640 AvailableVirtualMemory: 65166487552 BackgroundTaskMode: 0 BuildID: 20240726091552 ContentSandboxCapabilities: 119 ContentSandboxCapable: 1 ContentSandboxLevel: 4 CrashTime: 1722173712 DOMFissionEnabled: 1 DOMIPCEnabled: 1 DesktopEnvironment: xfce EMCheckCompatibility: true GpuSandboxLevel: 0 GraphicsNumActiveRenderers: 1 GraphicsNumRenderers: 1 HeadlessMode: 0 InstallTime: 1722086601 IsWayland: 0 LastStartupWasCrash: 1 LinuxUnderMemoryPressure: 0 Notes: Gentoo LinuxFP(D00-L1000-W0000000-T01) WR? WR+ EGL? EGL- GL Context? GL Context+ WebGL? WebGL+ ProductID: {ec8030f7-c20a-464f-9b0e-13a3a9e97384} ProductName: Firefox RDDProcessStatus: Running ReleaseChannel: aurora SafeMode: 0 SecondsSinceLastCrash: 324 StartupCacheValid: 0 StartupCrash: 0 StartupTime: 1722173401 SubmittedFrom: Client TelemetryClientId: 8d5032ba-a1c3-4acb-b235-847bd4545b87 TelemetryEnvironment: {"build":{"applicationId":"{ec8030f7-c20a-464f-9b0e-13a3a9e97384}","applicationName":"Firefox","architecture":"x86-64","buildId":"20240726091552","version":"129.0","vendor":"Mozilla","displayVersion":"129.0b9","platformVersion":"129.0","xpcomAbi":"x86_64-gcc3","updaterAvailable":true},"partner":{"distributionId":null,"distributionVersion":null,"partnerId":null,"distributor":null,"distributorChannel":null,"partnerNames":[]},"system":{"memoryMB":64259,"virtualMaxMB":null,"cpu":{"count":12,"cores":6,"vendor":"GenuineIntel","name":"Intel(R) Core(TM) i7-3930K CPU @ 3.20GHz","family":6,"model":45,"stepping":7,"l2cacheKB":256,"l3cacheKB":12288,"speedMHz":5700,"extensions":["hasMMX","hasSSE","hasSSE2","hasSSE3","hasSSSE3","hasSSE4_1","hasSSE4_2","hasAVX","hasAES"]},"os":{"name":"Linux","version":"6.6.38-gentoo","locale":"en-US","distro":"Gentoo","distroVersion":"2.15"},"hdd":{"profile":{"model":null,"revision":null,"type":null},"binary":{"model":null,"revision":null,"type":null},"system":{"model":null,"revision":null,"type":null}},"gfx":{"D2DEnabled":null,"DWriteEnabled":null,"ContentBackend":"Skia","Headless":false,"EmbeddedInFirefoxReality":null,"TargetFrameRate":60,"adapters":[{"description":"OLAND (radeonsi, , LLVM 18.1.8, DRM 2.50, 6.6.38-gentoo)","vendorID":"0x1002","deviceID":"0x6613","subsysID":null,"RAM":0,"driver":null,"driverVendor":"mesa/radeonsi","driverVersion":"24.1.3.0","driverDate":null,"GPUActive":true}],"monitors":[{"screenWidth":1920,"screenHeight":1080}],"features":{"compositor":"webrender","hwCompositing":{"status":"available"},"gpuProcess":{"status":"unused"},"webrender":{"status":"available"},"wrCompositor":{"status":"blocked:FEATURE_FAILURE_DISABLE_RELEASE_OR_BETA"},"openglCompositing":{"status":"available"},"omtp":{"status":"unused"}}},"appleModelId":null,"hasWinPackageId":null},"settings":{"blocklistEnabled":true,"e10sEnabled":true,"e10sMultiProcesses":8,"fissionEnabled":true,"telemetryEnabled":true,"locale":"en-US","intl":{"requestedLocales":["en-US"],"availableLocales":["en-US"],"appLocales":["en-US"],"systemLocales":["en-US"],"regionalPrefsLocales":["en-US"],"acceptLanguages":["en-US","en"]},"update":{"channel":"aurora","enabled":true,"autoDownload":true,"background":true},"userPrefs":{"browser.search.region":"US","browser.search.widget.inNavBar":false,"browser.urlbar.autoFill":true,"browser.urlbar.autoFill.adaptiveHistory.enabled":false,"browser.urlbar.dnsResolveSingleWordsAfterSearch":0,"browser.urlbar.quicksuggest.dataCollection.enabled":false,"browser.urlbar.suggest.quicksuggest.nonsponsored":true,"browser.urlbar.suggest.quicksuggest.sponsored":true,"media.gmp-gmpopenh264.enabled":false,"media.gmp-gmpopenh264.lastInstallStart":1721840659,"media.gmp-gmpopenh264.lastDownload":1721840660,"media.gmp-gmpopenh264.lastUpdate":1721840660,"media.gmp-manager.lastCheck":1722086677,"media.gmp-manager.lastEmptyCheck":1722086677,"network.trr.strict_native_fallback":false,"widget.content.gtk-high-contrast.enabled":true},"sandbox":{"effectiveContentProcessLevel":4,"contentWin32kLockdownState":3},"addonCompatibilityCheckEnabled":true,"isDefaultBrowser":true,"defaultSearchEngine":"google-b-1-d","defaultSearchEngineData":{"loadPath":"[app]google@search.mozilla.org","name":"Google","origin":"default","submissionURL":"https://www.google.com/search?client=firefox-b-1-d&q="}},"profile":{"creationDate":19928,"firstUseDate":19928},"addons":{"activeAddons":{"formautofill@mozilla.org":{"version":"1.0.1","scope":1,"type":"extension","updateDay":19926,"isSystem":true,"isWebExtension":true,"multiprocessCompatible":true,"blocklisted":false,"description":null,"name":"Form Autofill","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":19926,"quarantineIgnoredByApp":true,"quarantineIgnoredByUser":false},"pictureinpicture@mozilla.org":{"version":"1.0.0","scope":1,"type":"extension","updateDay":19926,"isSystem":true,"isWebExtension":true,"multiprocessCompatible":true,"blocklisted":false,"description":"Fixes for web compatibility with Picture-in-Picture","name":"Picture-In-Picture","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":19926,"quarantineIgnoredByApp":true,"quarantineIgnoredByUser":false},"webcompat-reporter@mozilla.org":{"version":"2.1.0","scope":1,"type":"extension","updateDay":19926,"isSystem":true,"isWebExtension":true,"multiprocessCompatible":true,"blocklisted":false,"description":"Report site compatibility issues on webcompat.com","name":"WebCompat Reporter","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":19926,"quarantineIgnoredByApp":true,"quarantineIgnoredByUser":false},"webcompat@mozilla.org":{"version":"129.3.0","scope":1,"type":"extension","updateDay":19926,"isSystem":true,"isWebExtension":true,"multiprocessCompatible":true,"blocklisted":false,"description":"Urgent post-release fixes for web compatibility.","name":"Web Compatibility Interventions","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":19926,"quarantineIgnoredByApp":true,"quarantineIgnoredByUser":false}},"theme":{"id":"default-theme@mozilla.org","blocklisted":false,"description":"Follow the operating system setting for buttons, menus, and windows.","name":"System theme — auto","userDisabled":false,"appDisabled":false,"version":"1.3","scope":4,"foreignInstall":false,"hasBinaryComponents":false,"installDay":19928,"updateDay":19928},"activeGMPlugins":{}},"experiments":{"upgrade-spotlight-rollout":{"branch":"treatment","type":"nimbus-rollout"}}} TelemetryServerURL: https://incoming.telemetry.mozilla.org TelemetrySessionId: aba8ef58-e31e-4fc6-b7a6-a5473f7d83d7 Throttleable: 1 TotalPageFile: 136099627008 TotalPhysicalMemory: 67380154368 URL: https://www.google.com/maps?authuser=0 UptimeTS: 311.090528 UtilityProcessStatus: Running Vendor: Mozilla Version: 129.0 useragent_locale: en-US This report also contains technical information about the state of the application when it crashed.

Firefox version 145.0 in Linux Ubuntu 22.04.5 LTS. When I open Firefox all tabs from previous session are gone. On "Startup" I have checked "Open previous windows and tabs". Which worked before but not now. It is very frustrating. How do I fix? The Profile Manager opens the settings and "Open previous windows and tabs" is checked. Checking "ask before closing multiple tabs" doesn't help.

Hi,

I am using Firefox for Linux, and whenever my yubikey is plugged in, firefox will start bothering me for a pkcs#11 password. It always happens on start-up but it gets relentlessly annoying if I happen to be on a site which potentially utilizes certificate auth, which I do not use this yubikey for.

I do however use it for 2fa, which does work perfectly fine.

How do I permanently stop whatever Firefox process keeps bothering me about this PKCS#11 password for functionality that I never use?

Ubuntu - I use the SNAP version of Firefox - I generally have lots of tabs open but only use 5 or so of them and it's generally fine.... but when I am closing Firefox, it USES like 100% of the CPU and ALL of the RAM and ALL of the SWAP memory when closing.

This locks up the computer.

Sometimes it doesn't quite go all the way but I can watch it all happen in real time, using Task Manager - and that shows a solidwall of all resources occouring, when the close Firefox is run.

I am told by research via ChatGPT that this is a very real problem with the SNAP version and it's best to change to the Debian version, copy all the bookmarks etc., across and then uninstall the SNAP version.

It's rather disconcerting to have Linux crash because of this one app locking it up and frequently.

Chat GPT:

Is there a problem with Firefox Snap Version closing and using all the resources while doing so, which results in locking up the computer?

You're definitely not imagining it—there have been reports of Firefox's Snap version consuming excessive system resources (CPU, memory) and even causing lockups or hangs, particularly during closure. Here's what’s going on and how to mitigate it:

What’s Happening with Firefox Snap?

2. Browser Hangs or Locks the System on Close

On Linux (especially Ubuntu), users have reported that closing Firefox can lead to it hanging in memory, sometimes unresponsive and still consuming resources.
Super User
Ask Ubuntu
A stark example from Reddit illustrates the severity:
“About 50% of the time I open Firefox, it'll reach 100% CPU usage in about 30 seconds… PC completely unusable unless I shutdown.”
Reddit

3. Known Wayland Sway Bug

On Wayland/Sway setups, reloading Sway while Firefox is open can trigger intense logging, causing high CPU use and an enormous syslog.
Fix: Set MOZ_DISABLE_WAYLAND_PROXY=1, or upgrade to FF 125 where the issue is addressed.
Reddit+1

Alternative Approach

Many users, particularly on Ubuntu, opt out of Snap completely in favor of the .deb package or PPA builds. These alternatives often avoid these specific issues. Ask Ubuntu Reddit

Thoughts? Solutions?

Thanks in advance.

After updating my openSUSE Firefox package from version 122 to 123 every frame inside each window started to have weird grey overlay of scrollable area. I failed to find any description of such a thing happening, let alone how to get rid of it. I tried removing build-in distro-default preferences and had complete audit of all my custom preferences in about:config but none changed that behavior. I even updated to 124b4 but this also haven't changed anything. Naturally, nuking entire profile is not an option, I might as well replace the whole browser. So, how do I get rid of this thing?

This issue is happening with every newly installed add-on, but not with add-ons installed on or before Aug 3, 2024. The add-ons are installed via addons.mozilla.org. To rule out the possibility that it's happening only with specific add-ons, I also installed one of the random recommendations on that page, Augmented Steam which has 54,248 users, and it happens with that one as well.

I'll click Enable, but the prompt appears every time I restart Firefox.

What I've tried (with a restart after each attempt):

• Clear the startup cache
• Delete extensions.json
• Delete compatibility.ini
• Via about:config deleted extensions.databaseSchema and extensions.getAddons.databaseSchema
• Excluded Add-ons from syncing

I've noticed the following in extensions.json for each of the recent add-ons after restart:

• syncGUID changes to presumably random new value
• active changes from true to false
• userDisabled changes from false to true
• seen changes from true to false

Hi,

Someone sends me a calendar appointment for 11th of May at 16:30-18:30 and another at 18:30:20:30. I accept these appointments. In my calendar, they correctly display at these times.

When I close and re-open Thunderbird, the first appointment is now scheduled for 12th of May, but the second is fine. When I close and re-open Thunderbird again, the second appointment is now scheduled for 12th of May as well.

The times are completely different too.

I'm using Thunderbird 138 from the Arch Linux repositories but I've also tried the Flatpak package to no avail. I've tried setting my Timezone manually and using my System timezone to no avail.

GNOME Calendar, which is also synced to my Caldav server, displays the appointments at the correct day and time. The web interface for my mail server also displays correctly.

It's only Thunderbird that screws it up time and time again.

This has been going on for years and it is driving me insane. I can't use my calendar with Thunderbird because I keep thinking my appointments are at the wrong time!

Send help.

Hello,

For an unknown reason, my firefox sometimes is really slow to startup.

It can take up to 10 minutes before the webpage start to load. My hardware is not that bad. I try to use the "performance" to capture the issue : https://share.firefox.dev/3x2rgHj I don't know if there is something to see because, the tool is also slow.

It happens on 3 different computers on linux.

I try to disable all extensions and without telemetry but nothing change. I'm reporting the problem now but it's much older

If you have a idea to fix this issue please share because it's really annoying.

I installed one of the ad blockers, I can't remember which one. It's given me so much trouble that I thought to disable or delete it. I deleted the little icon ( a stop sign) that shows up on the far right of one of the menu bars (don't know the name of that bar but here it's the second one down). But websites still complain that I have an ad blocker. I've gone to 'add-ons and themes' but I can't find it. BTW, what's the difference between an add-on, a plug-in and an extension? Which one of those are ad blockers? How can I see and then delete whichever blocker I still have? Without the icon I can't even disable it for individual sites.

Can’t launch Firefox 3.5.19 on Linux Ubuntu When trying to run with:

./firefox

Terminal gives the following:

./firefox-bin: error while loading shared libraries: libdbus-glib-1.so.2: cannot open shared object file: No such file or directory