Firefox Support Forum

OS version: Ubuntu 22.04.1 LTS (jammy), 64-bit (amd64, x86_64). Firefox version: 110.0 (64-bit) (NOTE: the issue was noticed with version 109.0, too)

Firefox package was installed on Ubuntu through 'APT', using the Mozilla Team repository (https://ppa.launchpadcontent.net/mozillateam/ppa/ubuntu/). It caught my attention that an excessive amount of Firefox related 'DENIED' AppArmor log messages is generated during the browser activity.

According to messages, Firefox is occasionally denied read access to '/sys/devices/' area and read/write access to 'oom_score_adj' target in '/proc/'. Could somebody clarify why would that access be required for regular browser operations? I'm a bit puzzled as I haven't noticed anything similar with the older Ubuntu and Firefox versions. A complete suppression of those messages is also an option as long as there's no negative impact on application's performance.

I already posted this question to Ubuntu forum but seems like nobody there could provide an explanation. I'd appreciate any input or hint.

Following is the sample of referred log messages:

---SNIP--- [Fri Feb 24 19:14:50 2023] audit: type=1400 audit(1674000890.813:39): apparmor="DENIED" operation="capable" profile="firefox" pid=2231 comm="firefox" capability=21 capname="sys_admin"

[Fri Feb 24 19:14:50 2023] audit: type=1400 audit(1674000890.877:40): apparmor="DENIED" operation="open" profile="firefox" name="/sys/devices/pci0000:00/0000:00:02.0/revision" pid=2235 comm="firefox" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0

[Fri Feb 24 19:14:50 2023] audit: type=1400 audit(1674000890.877:41): apparmor="DENIED" operation="open" profile="firefox" name="/sys/devices/pci0000:00/0000:00:02.0/config" pid=2235 comm="firefox" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0

[Fri Feb 24 19:14:50 2023] audit: type=1400 audit(1674000890.877:42): apparmor="DENIED" operation="open" profile="firefox" name="/sys/devices/pci0000:00/0000:00:02.0/revision" pid=2235 comm="firefox" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0

[Fri Feb 24 19:14:50 2023] audit: type=1400 audit(1674000890.877:43): apparmor="DENIED" operation="open" profile="firefox" name="/sys/devices/pci0000:00/0000:00:02.0/config" pid=2235 comm="firefox" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0

[Fri Feb 24 19:14:50 2023] audit: type=1400 audit(1674000890.885:44): apparmor="DENIED" operation="open" profile="firefox" name="/sys/devices/pci0000:00/0000:00:02.0/revision" pid=2235 comm="firefox" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0

[Fri Feb 24 19:14:50 2023] audit: type=1400 audit(1674000890.885:45): apparmor="DENIED" operation="open" profile="firefox" name="/sys/devices/pci0000:00/0000:00:02.0/config" pid=2235 comm="firefox" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0

[Fri Feb 24 19:14:50 2023] audit: type=1400 audit(1674000890.885:46): apparmor="DENIED" operation="open" profile="firefox" name="/sys/devices/pci0000:00/0000:00:02.0/revision" pid=2235 comm="firefox" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0

[Fri Feb 24 19:14:50 2023] audit: type=1400 audit(1674000890.885:47): apparmor="DENIED" operation="open" profile="firefox" name="/sys/devices/pci0000:00/0000:00:02.0/config" pid=2235 comm="firefox" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0 . . . . . . [Fri Feb 24 19:16:22 2023] audit: type=1400 audit(1674000983.040:56): apparmor="DENIED" operation="open" profile="firefox" name="/proc/2347/oom_score_adj" pid=2231 comm="firefox" requested_mask="w" denied_mask="w" fsuid=1000 ouid=1000

[Fri Feb 24 19:16:35 2023] audit: type=1400 audit(1674000995.296:57): apparmor="DENIED" operation="open" profile="firefox" name="/proc/2347/oom_score_adj" pid=2231 comm="firefox" requested_mask="w" denied_mask="w" fsuid=1000 ouid=1000

[Fri Feb 24 19:16:39 2023] audit: type=1400 audit(1674000999.280:58): apparmor="DENIED" operation="open" profile="firefox" name="/proc/2347/oom_score_adj" pid=2231 comm="firefox" requested_mask="w" denied_mask="w" fsuid=1000 ouid=1000

[Fri Feb 24 19:16:41 2023] audit: type=1400 audit(1674001001.768:59): apparmor="DENIED" operation="open" profile="firefox" name="/proc/2455/oom_score_adj" pid=2231 comm="firefox" requested_mask="w" denied_mask="w" fsuid=1000 ouid=1000

[Fri Feb 24 19:16:41 2023] audit: type=1400 audit(1674001001.768:60): apparmor="DENIED" operation="open" profile="firefox" name="/proc/2458/oom_score_adj" pid=2231 comm="firefox" requested_mask="w" denied_mask="w" fsuid=1000 ouid=1000 ---SNIP---

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Firefox always uses excessive GPU memory when I watch video and livestream. about:memory shows that the explict GPU memory allocation is only about 200 MB but in the task manager the GPU memory usage is 1GB, and the latter doesn't decrease even if I close the tab. I suspect that this is a memory leak. I searched for Bugzilla and found a similar issue that has been existing for years: https://bugzilla.mozilla.org/show_bug.cgi?id=1386177

Hi there. My scroll wheel on my mouse stopped working. Only way to scroll is to press Ctrl+Shift and then use scroll wheel, which makes it work fine. But i would prefer to not have to press down Ctrl+Shift to scroll. This problem is only happening on Firefox and no other browser or program on my computer. Do you know any solutions?

Mouse scroll wheel not scrolling web page after installing Firefox version 110. I installed an older version, 98, and it worked again, but that version would not use my profile and it seemed to update itself to 110 and then scrolling was broken again. Am I alone or is everyone broken at version 110?

After a recent reinstall Firefox seems to have a problem. This seems to be only Firefox specific and I can't find a working solution online after googling.

Youtube videos work, although they do give errors sometimes. A refresh always fixes those. However Twitch/Youtube live streams do not, and display a generic error message. When trying other browsers the live streams work fine.

And old Bugzilla post (https://bugzilla.mozilla.org/show_bug.cgi?id=1467495) describes what I believe to be a possible reason for the problem, however following the solutions in that thread have not yet lead to a solution.

Any further insight or solutions would be appreciated.

I recently installed new pc with fresh Firefox Developer Edition. Then I transfered the profile folder from old pc to the new pc. All bookmarks, addons, etc is there. Just the XULRunner popup appears only on the new pc. I uninstalled firefox on the new pc again and reinstalled it with profile cleaning. After profile cleaning firefox got faster and addons got removed. But the XULRunner popup keeps appearing. When I go to taskscheduler and trigger the "Firefox Developer Edition Background Update CA9422711AE1A81C" again, the XULRunner popup appears. Removing this taskscheduler and Firefox keeps readding it and the XULRunner popup are back. Any idea how I can get rid of the XULRunner popup?

So today, February 17th 2023, the first time I turned on my computer, opened firefox, then went to a website (Twitch) the site was loading very slow and while thinking "oh is Twitch having issues again?" my computer completely crashed, which has never been caused by firefox or any browser before. I started my computer back up and firefox itself wasn't working properly, opened a separate browser to troubleshoot my issues, so I did run in troubleshoot mode, I do have a "old firefox data" folder on my desktop, I tried copying the suggested files on there to the new profile folder. My bookmarks bar won't show my bookmarks even though I can see all my bookmarks under the manage bookmarks view. The 3 bar menu on the top right of the browser won't do anything when I click it so I have to do the "alt" key option of menu for everything. I did a security scan of my computer because I got paranoid and everything is showing as fine, so I don't know what could be causing this other than maybe the recent update. I didn't have a lot of extensions just UBlock Origin, Tabliss, and Honey. Should I just uninstall and reinstall firefox?

So, my browser is disabled. I can open it, but if I type anything in the adress bar (the home menu with recomendations and the search tab doesn't pop up) it will process the information, but then stop and gives me a blank screen. I send an image of it. For example if I type https://www.google.com the tab will go white and I can't do anything about it. In the apliccation menu, the only thing I can do is to go into troobleshooting mode by clicking the Help tab. Everything else (except for the new tab or window tool) is disabled. I beleive it is coused by the fact I can't open any website and those tabs are links. Please write back.

Firefox updated yestarday. I see these changes: extension are gone, theme settings were switched from Dark to Light, "Startup -> Open previous windows and tabs" option went from checked to unchecked. These things are still fine: bookmarks, saved passwords and history. Tried reverting to older Firefox version, but it didn't help so I installed the new one again. I then checked profiles in AppData folder and I see three of them. The problematic one I just described, the one that was automatically created when I tried to downgrade to previous Firefox version and the one which only contains empty "parent.lock" file. There is nothing useful in "Extensions" folders (first profile has addblock extension file which I just installed, second profile has langpack extension file). I don't particularly care about which specific extensions I used since I can just reinstall them when I need them again, but one of those extensions contained custom written scripts which were running on specific sites to help me with my work. Those scripts are what I really want to recover.

I tried to Connect Dropbox to my desktop, but the page would not load.

Chrome has no problem loading the page.

Could someone please let me know if they have the same problem

When doing some online homework in Firefox, my computer froze. I couldn't move my mouse or open task manager or do anything. I had ~12 tabs open to my online homework and Discord and TextMaker (a free Word alternative) running as well. I hard shut off my PC by holding down the power button. Upon startup, FF won't open. I click the shortcut and my computer has the little loading circle next to the mouse for a second, but then it disappears and nothing happens. If I try to open a PDF in FF or click a link to open in FF, the same thing happens; a loading circle next to my mouse cursor and nothing. I refreshed FF to no avail. I reinstalled FF, and nothing. I restarted my PC, and still no dice. FF doesn't appear in my task manager when I click it.

I tried running the firefox.exe -P command in the run menu and the start menu to manage my profiles and the same thing happens, I get a loading circle by my mouse and nothing happens.

I really like FF and use it for my schoolwork. Can anyone help me troubleshoot?

The blocks where code should be displayed like on screen and on stackoverflow displayed in a weird manner : replaced with [Object object] i don't have any extensions that might cause that

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Bonjour, Depuis une semaine, j'ai ce message à l'ouverture de ma page d'accueil Orange, avec Firefox !! PR_END_OF_FILE_ERROR il n'y a qu'avec mon navigateur et pas sur Chrome ni Edge. Avant, j'étais le seul impacté par ce problème et maintenant les trois P.C de la maison le sont. Deux W11 et un W10. En déconnectant le VPN le souci n'existe plus. Merci d'avance pour votre aide.

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do you have any idea?

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What in the world has been done to it? I'm using another browser just to contact support.

bp-52aadafa-d8a1-495c-910e-e3ea40230117 bp-e2f3f3fa-2427-42f8-b455-f0daf0230117 bp-d495523a-ecdf-4282-b784-00e890230117 bp-3cb2bfd3-d066-4dfd-8105-df4bf0230117 bp-e217c307-dcdd-48f2-ac6c-d9fe90230117 bp-b06b6c11-ceb1-45da-be27-e2e540230117 bp-6a9d039e-8265-4edc-b285-0da350230117 bp-da80b395-2ba6-455f-9887-87cd40230117 bp-f945b086-6a0a-469b-936b-c23420230117 bp-686f1023-c63a-4879-b168-ff7980230117 bp-76cf5e66-98a5-4e42-ad59-641580230117 bp-a4dbdd3d-c828-49d2-9083-1dc6d0221227 bp-8e940aed-540d-448d-99de-e7f900221227

Здравствуйте, при каждом запуске браузера происходит падение, как в обычном так и в безопасном режиме,входит раза с 20го а то и больше. при попытке что либо скачать или загрузить сразу же происходит падение. делал очистку и чистую установку удалял все аддоны проверял версии но ничего не помогает.ниже все последние отчеты по падениям bp-5258a840-e170-42ae-a91a-c86ef0230129 29.01.2023, 12:00 bp-9f26789e-7f92-4d89-8146-dd3cd0230123 23.01.2023, 15:18 bp-81b845d2-4422-4bd2-b462-8dbac0230123 23.01.2023, 15:18 bp-0a7f5964-634a-4789-9fb1-2ef520230123 23.01.2023, 15:14 bp-fa242af3-ebfd-4eca-bef7-ab7c50230123 23.01.2023, 15:11 bp-c711a64b-b942-4553-bb83-3d56e0230123 23.01.2023, 15:10 bp-7188edd5-7f6b-4f9f-a8d1-b48c60230123 23.01.2023, 15:08 bp-18a3eb0b-cdb3-4d6c-8363-0b3bc0230122 22.01.2023, 15:28 bp-e11e216a-e119-477f-a856-992350221207 07.12.2022, 13:52 bp-d74be234-27c4-46e1-9410-bac540221201 01.12.2022, 21:37 bp-94c9c72f-d557-4e85-bfba-f4ebe0221129 29.11.2022, 12:30 bp-2a8cf968-a783-4152-a1bd-7cc700221129 29.11.2022, 12:30 bp-a2660331-09a7-4692-907e-cd46b0221031 31.10.2022, 14:01 bp-717a4c22-e957-4046-8bdb-b11320221026 26.10.2022, 12:39 bp-c3f50104-9de4-4e9c-954b-38cbc0221026 26.10.2022, 12:35 bp-83773546-15a6-40a8-af96-ad25d0221024 25.10.2022, 0:23 bp-15aa9834-d969-40db-bcc6-e10340220906 06.09.2022, 10:33 bp-24567997-cde6-4616-a1cc-154470230129 29.01.2023, 18:19 bp-3e56a7e2-b9f0-49bb-bb23-b4c580230129 29.01.2023, 18:19 bp-77aa70d4-a97f-4d9f-ba27-e45910230129 29.01.2023, 18:19 bp-750e9d94-865f-4a29-9533-74d1f0230129 29.01.2023, 18:19 bp-b68c0ceb-159a-478c-a41d-e34390230129 29.01.2023, 18:19 bp-03222548-874f-417a-9551-e2c090230129 29.01.2023, 18:19 bp-42fe9c88-0b31-453d-8af4-2e00c0230129 29.01.2023, 18:19 bp-0bb24d82-e08e-49c2-be8d-043390230129 29.01.2023, 18:19 bp-4fefa779-6f52-4799-ba12-6252f0230129 29.01.2023, 18:19 bp-e7e35422-5ae1-43bf-9307-f0e720230129 29.01.2023, 18:19