[Bug 1771329] Re: Can't open apps due to Too many open files

[Joe Littlejohn]

Not sure which part of this fixes the problem, but I don't have any
issues after I run the following:

echo '* hard nofile 2097152' | sudo tee -a /etc/security/limits.conf
echo '* soft nofile 2097152' | sudo tee -a /etc/security/limits.conf
echo 'root hard nofile 2097152' | sudo tee -a /etc/security/limits.conf
echo 'root soft nofile 2097152' | sudo tee -a /etc/security/limits.conf
echo 'session required pam_limits.so' | sudo tee -a /etc/pam.d/common-session
echo 'DefaultLimitNOFILE=2097152' | sudo tee -a /etc/systemd/user.conf
echo 'DefaultLimitNOFILE=2097152' | sudo tee -a /etc/systemd/system.conf

Maybe it's all needed. Maybe only the last two lines are needed.

¯\_(ツ)_/¯

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https://bugs.launchpad.net/bugs/1771329

Title:
  Can't open apps due to Too many open files

Status in dbus package in Ubuntu:
  Confirmed

Bug description:
  Occasionally I find that I can't launch a new terminal, or can't
  achieve some other desktop task. Checking journalctl I see error
  messages like this:

  May 15 12:12:15 jl-XPS-13-9360 terminator.desktop[11840]:
  dbus.exceptions.DBusException:
  org.freedesktop.DBus.Error.LimitsExceeded: Failed to determine seats
  of user "1000": Too many open files

  
  or this:

  May 15 12:12:47 jl-XPS-13-9360 google-chrome.desktop[28308]:
  [28308:28343:0515/121247.966786:ERROR:bus.cc(394)] Failed to connect
  to the bus: Failed to determine seats of user "1000": Too many open
  files

  
  At the time this happen's I'm usually running Slack, Chrome, Emacs, and a few Java apps.

  I'm using Ubuntu Bionic (18.04), 4.15.0-20-generic x86_64, vanilla
  gnome-shell.

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