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All pages are blank, including about:config and about:preferences

  • 10 odpovedí
  • 2 majú tento problém
  • 42 zobrazení
  • Posledná odpoveď od ivushkinalex

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Firefox can't load any page, including about:config and about:preferences. about:support is working. All menus and surrounding UI is working too, but, for example, if I try to open Preferences page from menu - it will not open, even new tab isn't created.

If I start firefox with MOZ_DISABLE_CONTENT_SANDBOX=1 all works fine. Problem appeared after I accidentally used all of my laptop RAM with other app. Firefox didn't crashed, but after reopening this issue is began appearing.

I use Linux Mint 20, and apt-upgraded all packages (including firefox) right after this issue first appeared. I tried to: - restart browser (didn't work) - restart laptop (didn't work) - use different profile (didn't work) - use browser safe mode (didn't work) - clear caches (didn't work) - disable all extensions (didn't work) - use different versions: 75.0, 87.0, 82.0, freshly-compiled by myself (didn't work) - refreshing firefox (didn't work) - run firefox with MOZ_DISABLE_CONTENT_SANDBOX=1 (worked, but it's obviously unsafe and don't fix the root problem)

I found some issues and bugs that looks pretty similar to mine: https://support.mozilla.org/en-US/questions/1245935 https://support.mozilla.org/en-US/questions/1235332 https://support.mozilla.org/en-US/questions/1279656 https://bugzilla.mozilla.org/show_bug.cgi?id=1433065

Also, after closing firefox, it stays running in processes, and I can't open new window for 30 seconds or more after closing old window.

I think it's bug and problem is somewhere in firefox sources. Do you have any ideas, how can I fix this?

Vybrané riešenie

I found the cause of this problem. It was icaclient (aka Citrix Workspace App), installed with AppProtection turned on (libAppProtection.so). I completely removed icaclient and all works fine now. Big thx for thix StackOverflow question

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Všetky odpovede (10)

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Oh, forgot to mention. I tried to disable hardware acceleration and change NVIDIA drivers (tried 440, 450 and 460). All didn't work

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Try uninstalling Firefox, removing leftovers such as folders, files and junk in the registry (regedit.exe). Then reinstall Firefox. Instead of manual removal, try some free removal programs such as the one by IObit.

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hidetoshi6721 said

Try uninstalling Firefox, removing leftovers such as folders, files and junk in the registry (regedit.exe). Then reinstall Firefox. Instead of manual removal, try some free removal programs such as the one by IObit.

I'm using Linux, not Windows, there is no registry and special junk removal programs. I searched through system files with grep, and all I found related to firefox was cache (which I deleted) and profile files (which I switched). So, I don't know where to find these files.

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Maybe try to enable sandbox logging.

  • MOZ_SANDBOX_LOGGING=1

You can also try a lower level for the sandbox like 2 or 1 via user.js or by editing prefs.js

  • security.sandbox.content.level = 2

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cor-el said

Maybe try to enable sandbox logging.
  • MOZ_SANDBOX_LOGGING=1
You can also try a lower level for the sandbox like 2 or 1 via user.js or by editing prefs.js
  • security.sandbox.content.level = 2

Tried this, but can't find in logs where is the problem

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Can you see if there are any corrupt .json files in you profile folder. I had a bug in Nightly and the about:support was blank. I had to replace the bad files from another download of Nightly.

https://bugzilla.mozilla.org/show_bug.cgi?id=1695451

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Do you have the same issue with other users on the same computer? Can you download and run another copy from a folder to see if it has the same issue?

https://www.mozilla.org/en-US/firefox/all/#product-desktop-release

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jonzn4SUSE said

Can you see if there are any corrupt .json files in you profile folder. I had a bug in Nightly and the about:support was blank. I had to replace the bad files from another download of Nightly. https://bugzilla.mozilla.org/show_bug.cgi?id=1695451

I deleted all profile files, same issue

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jonzn4SUSE said

Do you have the same issue with other users on the same computer? Can you download and run another copy from a folder to see if it has the same issue? https://www.mozilla.org/en-US/firefox/all/#product-desktop-release

ran another copy (tried versions 82 and 87), same issue

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Vybrané riešenie

I found the cause of this problem. It was icaclient (aka Citrix Workspace App), installed with AppProtection turned on (libAppProtection.so). I completely removed icaclient and all works fine now. Big thx for thix StackOverflow question

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