I can reproduce it on the following page: https://plus.rtl.de/video- tv/shows/team-wallraff-reporter- undercover-242031/2024-4-993984/episode-1-schmutz-und-gier-undercover- in-der-reinigungsbranche-973676
Click on play(German "Abspielen"). Debian Stable Gnome Wayland with enabled Mozilla APT repository. Firefox 124.0.2. Apr 06 17:12:09 user firefox.desktop[12712]: [12712] Sandbox: attempt to open unexpected file /sys/devices/system/cpu/cpu0/cache/index2/size Apr 06 17:12:09 user firefox.desktop[12712]: [12712] Sandbox: attempt to open unexpected file /sys/devices/system/cpu/cpu0/cache/index3/size Apr 06 17:12:09 user firefox.desktop[12712]: [12712] Sandbox: attempt to open unexpected file /sys/devices/system/cpu/present Apr 06 17:12:09 user firefox.desktop[12712]: [12712] Sandbox: attempt to open unexpected file /sys/devices/system/cpu/possible Apr 06 17:12:13 user firefox.desktop[12716]: [12716] Sandbox: attempt to open unexpected file /sys/devices/system/cpu/cpu0/cache/index2/size Apr 06 17:12:13 user firefox.desktop[12716]: [12716] Sandbox: attempt to open unexpected file /sys/devices/system/cpu/cpu0/cache/index3/size Apr 06 17:12:13 user firefox.desktop[12716]: [12716] Sandbox: attempt to open unexpected file /sys/devices/system/cpu/present Apr 06 17:12:13 user firefox.desktop[12716]: [12716] Sandbox: attempt to open unexpected file /sys/devices/system/cpu/possible No entries can be seen in the journal-logs with these parameters. MOZ_DISABLE_GMP_SANDBOX=1 firefox -p libva info: VA-API version 1.17.0 libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/iHD_drv_video.so libva info: Found init function __vaDriverInit_1_17 libva info: va_openDriver() returns 0 [Parent 15764, IPC I/O Parent] WARNING: waitid failed pid:16098 errno:10: file /builds/worker/checkouts/gecko/ipc/chromium/src/base/process_util_posix.cc:244 [Parent 15764, IPC I/O Parent] WARNING: waitid failed pid:16091 errno:10: file /builds/worker/checkouts/gecko/ipc/chromium/src/base/process_util_posix.cc:244 [Parent 15764, IPC I/O Parent] WARNING: waitid failed pid:15980 errno:10: file /builds/worker/checkouts/gecko/ipc/chromium/src/base/process_util_posix.cc:244 [Parent 15764, IPC I/O Parent] WARNING: waitid failed pid:15954 errno:10: file /builds/worker/checkouts/gecko/ipc/chromium/src/base/process_util_posix.cc:244 -- 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/1983010 Title: Sandbox: attempt to open unexpected file /sys/devices/system/cpu/cpu0/cache/index2/size Status in Mozilla Firefox: New Status in firefox package in Ubuntu: Confirmed Bug description: I use Firefox Beta and launch it from the terminal. While watching Netflix on Firefox, I get the following messages on my terminal: Sandbox: attempt to open unexpected file /sys/devices/system/cpu/cpu0/cache/index2/size Sandbox: attempt to open unexpected file /sys/devices/system/cpu/cpu0/cache/index3/size Sandbox: attempt to open unexpected file /sys/devices/system/cpu/present Sandbox: attempt to open unexpected file /sys/devices/system/cpu Sandbox: Unexpected EOF, op 0 flags 00 path /proc/cpuinfo ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: firefox (not installed) ProcVersionSignature: Ubuntu 5.15.0-41.44-generic 5.15.39 Uname: Linux 5.15.0-41-generic x86_64 ApportVersion: 2.20.11-0ubuntu82.1 Architecture: amd64 CasperMD5CheckResult: pass CurrentDesktop: KDE Date: Thu Jul 28 15:01:35 2022 InstallationDate: Installed on 2022-06-21 (36 days ago) InstallationMedia: Ubuntu 22.04 LTS "Jammy Jellyfish" - Release amd64 (20220419) SourcePackage: firefox UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/firefox/+bug/1983010/+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