Public bug reported: 1) The release of Ubuntu you are using, via 'lsb_release -rd' or System -> About Ubuntu Description: Ubuntu 18.10 Release: 18.10
2) The version of the package you are using, via 'apt-cache policy pkgname' or by checking in Software Center firefox: Installed: 63.0+build1-0ubuntu1 Candidate: 63.0+build1-0ubuntu1 Version table: *** 63.0+build1-0ubuntu1 500 500 http://ubuntu.osuosl.org/ubuntu cosmic/main amd64 Packages 100 /var/lib/dpkg/status 3) What you expected to happen Normal web browsing experience 4) What happened instead Graphical elements are black. After upgrading to 18.10, firefox graphical elements (window contents, context menus) are black. The only exception is a small rectangle in the upper left corner. Right-clicking within the window creates a context menu, which I am able to verify by observing a new black rectangle of the correct width that can be made to occlude the task bar by initiating it at a suitable starting position. If I launch firefox from a terminal then I get messages like the following: --------code [GFX1-]: Failed to lock new back buffer. [Parent 25238, Main Thread] WARNING: failed to open shm: Permission denied: file /build/firefox-MtV3KQ/firefox-63.0+build1/ipc/chromium/src/base/shared_memory_posix.cc, line 129 --------/code This occurs regardless of which desktop environment I use. Other browsers are working fine. I'm guessing the problem is related to the reported problem accessing shm. However, for the sake of completeness, I am using an AMD gpu with standard driver: 01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Curacao XT / Trinidad XT [Radeon R7 370 / R9 270X/370X] [1002:6810] ** Affects: firefox (Ubuntu) Importance: Undecided Status: New ** Summary changed: - irefox windows are black in Ubuntu 18.10 + firefox windows are black in Ubuntu 18.10 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1798999 Title: firefox windows are black in Ubuntu 18.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1798999/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs