Hello Felipe, it looks like you may have changed /etc/apparmor.d/usr.bin.firefox causing the automatic updates to fail.
Running this in a terminal will probably fix things: sudo apt update sudo apt install -f sudo apt upgrade Thanks ** Information type changed from Private Security to Public Security ** Changed in: firefox (Ubuntu) Status: New => Won't Fix -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/1882380 Title: package firefox 77.0.1+build1-0ubuntu0.20.04.1 failed to install/upgrade: fim de ficheiro em stdin na prompt do ficheiro de configuração Status in firefox package in Ubuntu: Won't Fix Bug description: Pacote Firefox com erro ao carregar a página ProblemType: Package DistroRelease: Ubuntu 20.04 Package: firefox 77.0.1+build1-0ubuntu0.20.04.1 ProcVersionSignature: Ubuntu 5.4.0-33.37-generic 5.4.34 Uname: Linux 5.4.0-33-generic x86_64 AddonCompatCheckDisabled: False ApportVersion: 2.20.11-0ubuntu27.2 AptOrdering: firefox:amd64: Install NULL: ConfigurePending Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: felipe 2466 F.... pulseaudio BuildID: 20200602222727 CasperMD5CheckResult: skip Channel: Unavailable Date: Thu Jun 4 20:00:09 2020 ErrorMessage: fim de ficheiro em stdin na prompt do ficheiro de configuração ForcedLayersAccel: False InstallationDate: Installed on 2020-05-10 (27 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) NoProfiles: True PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. Python3Details: /usr/bin/python3.8, Python 3.8.2, unpackaged PythonDetails: N/A RelatedPackageVersions: dpkg 1.19.7ubuntu3 apt 2.0.2ubuntu0.1 RunningIncompatibleAddons: False SourcePackage: firefox Title: package firefox 77.0.1+build1-0ubuntu0.20.04.1 failed to install/upgrade: fim de ficheiro em stdin na prompt do ficheiro de configuração UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 11/14/2013 dmi.bios.vendor: Dell Inc. dmi.bios.version: A19 dmi.board.name: 01MCMN dmi.board.vendor: Dell Inc. dmi.board.version: A01 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA19:bd11/14/2013:svnDellInc.:pnLatitudeE6320:pvr01:rvnDellInc.:rn01MCMN:rvrA01:cvnDellInc.:ct9:cvr: dmi.product.name: Latitude E6320 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. modified.conffile..etc.apport.blacklist.d.firefox: /usr/lib/firefox/firefox /usr/lib/firefox/plugin-container modified.conffile..etc.apport.native-origins.d.firefox: LP-PPA-ubuntu-mozilla-daily LP-PPA-ubuntu-mozilla-daily-firefox-aurora LP-PPA-mozillateam-firefox-next modified.conffile..etc.firefox.syspref.js: // This file can be used to configure global preferences for Firefox // Example: Homepage //pref("browser.startup.homepage", "http://www.weebls-stuff.com/wab/"); mtime.conffile..etc.apparmor.d.usr.bin.firefox: 2020-04-30T08:04:06 mtime.conffile..etc.apport.blacklist.d.firefox: 2020-04-03T16:34:46 mtime.conffile..etc.apport.native-origins.d.firefox: 2020-04-03T16:34:46 mtime.conffile..etc.firefox.syspref.js: 2019-10-21T09:24:29 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1882380/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp