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lsof | wc –l lsof | wc -l=== Ubuntu changes computer clock on reboot ===On a dual boot system, or comparing bios time to the time in Ubuntu- Windows tries to keep HW clock at the local time. Linux tries to keep them at the UTC. sudo vi /etc/default/rcSSet UTC=noAfter this configured properly, you should again enable automatic sync in both Linux and Windows.''note: does not work in Linux Mint 18 (works in Ubuntu)''As a second thing to try, sudo timedatectl set-local-rtc 1To check out if your system uses Local time execute the command: timedatectlOne known issue is that fglrx is no longer supported with Ubuntu 16.04, as AMD is working on a new open-source driver. You can run sudo ubuntu-drivers devices to see the detected drivers.One known issue is that fglrx is no longer supported with Ubuntu 16.04, as AMD is working on a new open-source driver. Apparently, the default NVidia driver is "nouveau" and it doesn't support 3D acceleration. You can run sudo ubuntu-drivers devices to see the detected drivers.If you would like to test and see if 3D Acceleration is supported or enabled then use the following: /usr/lib/nux/unity_support_test -pAnother helpful testing utility is in mesa-utils and is called glxgears sudo apt install mesa-utils glxgearsInstall Nvidia driver instead of nouveau:ref: https://askubuntu.com/questions/481414/install-nvidia-driver-instead-of-nouveaunote: drivers not compatible with 16.04. Only working resolution thus far is to downgrade.See also: [[Video Driver and OpenGL Troubleshooting in Linux]]