Category Archives: Ubuntu

Ubuntu 22.04 VNC stops working

Posted on April 1, 2023 by tim

My Ubuntu 22.04 virtual machine has been constantly turning off (crashing?) the VNC server. This is the VNC server that is built-in under Settings -> Sharing -> Remote Desktop -> Enable Legacy VNC Protocol. One way to restart the VNC … Continue reading →

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iptables flush and ssh

Posted on September 21, 2016 by tim

Fun lesson from today: don’t blindly clear/flush your iptables. If you are remotely managing a system, then make sure you run this: sudo iptables -P INPUT ACCEPT sudo iptables -P FORWARD ACCEPT sudo iptables -P OUTPUT ACCEPT before you run … Continue reading →

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Ubuntu 16.04 Vnc and VirtualBox Resolution

Posted on April 24, 2016 by tim

As posted for 14.04, here are the steps to getting a larger VNC connection to your Ubuntu 16.04 virtual machine: Desktop Sharing Desktop Sharing is back as an item in 16.04 desktop. Just bring up the search, type “Desktop Sharing”. … Continue reading →

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Stealth Updates and Unstable LSI Drivers

Posted on September 4, 2015 by tim

(Just FYI to everyone out there, since this is not easy to find right now.) If you’re seeing this message: mpt2sas0: log_info (0x31080000): original (PL), code (0x08), sub_code (0x0000) Then you need to visit http://mycusthelp.info/LSI/_cs/AnswerDetail.aspx?&inc=8484 The short answer: Avago Tech … Continue reading →

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Ubuntu 14.04 Unity 3D RAM

Posted on August 30, 2015 by tim

My AMD Server seemed to be running out of RAM this morning. Checking the processes, it appeared that Unity 3D was using approximately 18G/32G (i.e. with no virtual machines running, the OS was still using 18G). Why? I don’t know … Continue reading →

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Virtualbox Window Sizing

Posted on June 10, 2014 by tim

Ran across this in my (seems to be never ending) search for larger resolution virtual machines running Ubuntu. This time running under Virtualbox in a server connected to tiny monitor (1680×1050). From the VirtualBox OS (Ubuntu 14.04 LTS in my … Continue reading →

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Ubuntu 14.04 VirtualBox Resolution

Posted on April 12, 2014 by tim

Want something other than 640×480 with Ubuntu running in VirtualBox 4.3.x? Follow these instructions. From http://codsplaice.blogspot.com/2014/02/a-quick-post-on-how-to-get-ubuntu-1404.html sudo apt-get update sudo apt-get upgrade sudo apt-get install linux-headers-$(uname -r) sudo apt-get install dkms build-essential Then mount the install CD image for the … Continue reading →

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Vnc Vino Ubuntu Security fix

Posted on April 12, 2014 by tim

To enable remote desktop in Ubuntu when “Settings” no longer shows the icon for “Desktop Sharing” or “Remote Desktop”, type: $ vino-preferences When your VNC client fails to connect with an error like “No matching security types” or “No security … Continue reading →

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Oracle Adds License to oracle-java7-installer and Now It Fails

Posted on March 15, 2014 by tim

For automatic provisioning that installs the official Oracle Java package, many paths lead to WebUpd8Team/java PPA and www.webupd8.org. Currently, the apt-get-install oracle-java7-installer command will fail, leaving a file at /var/cache/oracle-jdk7-installer/jdk-7u51-linux-*.tar.gz that is a plain .html file that contains “Sorry! In … Continue reading →

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