(firefox:9562): LIBDBUSMENU-GLIB-WARNING **: Unable to get session bus: Failed to execute child process "dbus-launch" (No such file or directory) Solution

(firefox:9562): LIBDBUSMENU-GLIB-WARNING **: Unable to get session bus: Failed to execute child process "dbus-launch" (No such file or directory)
ExceptionHandler::GenerateDump cloned child 9743
ExceptionHandler::WaitForContinueSignal waiting for continue signal...
ExceptionHandler::SendContinueSignalToChild sent continue signal to child
[Parent 9562, Gecko_IOThread] WARNING: pipe error (40): Connection reset by peer: file /build/firefox-EymEXX/firefox-69.0.1+build1/ipc/chromium/src/chrome/common/ipc_channel_posix.cc, line 358
[Parent 9562, Gecko_IOThread] WARNING: pipe error (40): Connection reset by peer: file /build/firefox-EymEXX/firefox-69.0.1+build1/ipc/chromium/src/chrome/common/ipc_channel_posix.cc, line 358
[Parent 9562, Gecko_IOThread] WARNING: pipe error (41): Connection reset by peer: file /build/firefox-EymEXX/firefox-69.0.1+build1/ipc/chromium/src/chrome/common/ipc_channel_posix.cc, line 358
^CExiting due to channel error.
Exiting due to channel error.

Install dbus-x11

apt-get install dbus-x11
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages were automatically installed and are no longer required:
  libdbusmenu-gtk4 libgtk2.0-0 libgtk2.0-bin libgtk2.0-common
Use 'apt autoremove' to remove them.
The following additional packages will be installed:
  dbus libdbus-1-3
The following NEW packages will be installed:
The following packages will be upgraded:
  dbus libdbus-1-3
2 upgraded, 1 newly installed, 0 to remove and 185 not upgraded.
Need to get 324 kB of archives.
After this operation, 142 kB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 dbus amd64 1.10.6-1ubuntu3.6 [141 kB]
Get:2 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 libdbus-1-3 amd64 1.10.6-1ubuntu3.6 [161 kB]
Get:3 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 dbus-x11 amd64 1.10.6-1ubuntu3.6 [21.5 kB]
Fetched 324 kB in 0s (462 kB/s)  
(Reading database ... 48717 files and directories currently installed.)
Preparing to unpack .../dbus_1.10.6-1ubuntu3.6_amd64.deb ...
Unpacking dbus (1.10.6-1ubuntu3.6) over (1.10.6-1ubuntu3.4) ...
Preparing to unpack .../libdbus-1-3_1.10.6-1ubuntu3.6_amd64.deb ...
Unpacking libdbus-1-3:amd64 (1.10.6-1ubuntu3.6) over (1.10.6-1ubuntu3.4) ...
Selecting previously unselected package dbus-x11.
Preparing to unpack .../dbus-x11_1.10.6-1ubuntu3.6_amd64.deb ...
Unpacking dbus-x11 (1.10.6-1ubuntu3.6) ...
Processing triggers for systemd (229-4ubuntu21.22) ...
Processing triggers for man-db (2.7.5-1) ...
Processing triggers for libc-bin (2.23-0ubuntu11) ...
Setting up libdbus-1-3:amd64 (1.10.6-1ubuntu3.6) ...
Setting up dbus (1.10.6-1ubuntu3.6) ...
A reboot is required to replace the running dbus-daemon.
Please reboot the system when convenient.
Setting up dbus-x11 (1.10.6-1ubuntu3.6) ...
Processing triggers for libc-bin (2.23-0ubuntu11) ...


Did that fix it?

[Parent 24622, Gecko_IOThread] WARNING: pipe error (52): Connection reset by peer: file /build/firefox-EymEXX/firefox-69.0.1+build1/ipc/chromium/src/chrome/common/ipc_channel_posix.cc, line 358

Upgrade Firefox and try again:

[Parent 25398, Main Thread] WARNING: fallocate failed to set shm size: No space left on device: file /build/firefox-KkEwt1/firefox-88.0+build2/ipc/chromium/src/base/shared_memory_posix.cc:388
ExceptionHandler::GenerateDump cloned child 25407
ExceptionHandler::SendContinueSignalToChild sent continue signal to child


If you're in an containerized environment you may need to increase shmpages on the container.

[GFX1-]: No GPUs detected via PCI
[GFX1-]: glxtest: process failed (received signal 11)


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