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This shows you the differences between two versions of the page.

--- ubuntu_18_notes [2021/02/21 11:04] – created juckins
+++ ubuntu_18_notes [2021/05/17 16:05] (current) – juckins
@@ Line 1: / Line 1: @@
 ==== VirtualBox running Ubuntu 18 Notes ====
+__20 Jul 2020__
+Updated VirtualBox to 6.1.12 and Ubuntu 18 would not login after MATE authentication screen (just got black screen).  Went into /opt/VBoxGuestAdditions-6.1.8 and uninstalled the Guest Additions.  Rebooted, logged in correctly.  Then installed latest version of GuestAdditions.  Rebooted again, logged in and all worked correctly.
+If restarting makes the screen go black again, use CTRL-F in VirtualBox 2 times, and that restores it.
+__Other Notes__
+[[https://linuxize.com/post/how-to-install-teamviewer-on-ubuntu-18-04/|TeamViewer installation]]
+[[https://linuxconfig.org/how-to-install-lamp-ubuntu-18-04-bionic-beaver-linux-apache-mysql-php|LAMP on Ubuntu 18.04]]
+[[http://howtoubuntu.org/how-to-install-lamp-on-ubuntu|General LAMP install]]
+[[https://help.ubuntu.com/stable/ubuntu-help/net-firewall-on-off.html|Firewall settings]]
+[[https://askubuntu.com/questions/44418/how-to-enable-root-login|Enabling root]] (or use sudo -i)
+Release info:
+<code>
+lsb_release -a
+</code>
+View installed kernels:
+<code>
+# dpkg --list | grep linux-image
+</code>
+Remove old kernels:
+  * https://code.launchpad.net/~jarnos/linux-purge/+git/linux-purge
+    * # linux-purge -s
+    * # linux-purge
+    * # linux-purge -m
+  * https://www.pontikis.net/blog/remove-old-kernels-debian-ubuntu (deprecated)
+[[https://packages.ubuntu.com/search?keywords=openconnect|Searching for Ubuntu Packages and versions]]
+View installed packages:
+<code>
+# apt list --installed
+# dpkg --get-selections | grep -v deinstall |grep unifi
+</code>
+Remove installed package:
+<code>
+# dpkg -r package_name
+</code>
+----
+Ubuntu 18.04 LTS
+  * After initial login, change preferences in terminal and remove undesired favorites
+  * [[https://websiteforstudents.com/how-to-install-ubuntu-16-04-17-10-18-04-guest-machines-on-virtualbox/|VirtualBox installation notes]]
+  * Allow Virtualbox guest additions:
+<code>
+sudo apt update
+sudo apt install build-essential gcc make perl
+sudo apt install vim
+sudo apt install gnome-software
+sudo apt install openssh-server
+reboot
+</code>
+  * [[https://linuxconfig.org/how-to-install-mate-desktop-on-ubuntu-18-04-bionic-beaver-linux|Install MATE Desktop link #1]]
+  * [[https://www.hiroom2.com/2018/05/06/ubuntu-1804-mate-en/|Install MATE Desktop link #2]]
+  * [[Install UniFi on Ubuntu|Install UniFi on Ubuntu]]
+__12 Sep 2019__
+[[https://hostadvice.com/how-to/configure-apache-with-tls-ssl-certificate-on-ubuntu-18/|Configure Apache HTTPS on Ubuntu 18]]
+__26 Jan 2019__
+Logging into Desktop GUI only gives a blank screen:
+  * Final fix was to do CTRL-F to toggle VirtualBox between fullscreen mode
+  * Tried updating VirtualBox Guest Additions to v5.2-5.2.24 but no change
+  * Tried updating packages using commands below
+Use these commands to update packages, as it allows interactive use to answer questions:
+<code>
+sudo apt update
+sudo apt upgrade
+sudo apt --with-new-pkgs upgrade
+</code>
+Very slow using Ubuntu GUI now:
+  * Enable 3D acceleration in VirtualBox settings
+  * Allocate 128MB video RAM
+  * Restart and test
+  * Also see these links:
+    * [[https://thomas.vanhoutte.be/miniblog/guide-speed-up-ubuntu-virtualbox/|Speeding up Ubuntu]]
+    * [[https://www.linuxbabe.com/virtualbox/speed-up-ubuntu-virtualbox]]
+Check that 3D acceleration is supported:
+  sudo apt install nux-tools
+  /usr/lib/nux/unity_support_test -p
+Installing mysql:
+<code>
+sudo apt install mysql-client-core-5.7
+sudo apt install mysql-server
+sudo /usr/bin/mysql_secure_installation
+</code>
+Then login like this:
+  sudo mysql -u root -p
+Login with a non-root user like this:
+  mysql -u username -p
+See notes at [[https://www.digitalocean.com/community/tutorials/how-to-install-mysql-on-ubuntu-18-04]] for setting up a new user
+Other SQL commands/testing:
+  CREATE USER 'username'@'localhost' IDENTIFIED BY 'password';
+  GRANT ALL PRIVILEGES ON *.* TO 'username'@'localhost' IDENTIFIED BY 'password';
+  CREATE DATABASE dbname;
+  SET PASSWORD FOR 'username'@'localhost' = PASSWORD('password');
+To allow logins to mysql via adminer:
+https://serverfault.com/questions/1001274/adminer-denied-acces-for-user
+  # su -
+  # mysql -u root -p
+  > ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'YOUR_PASSWORD';
+  # systemctl restart mysql
+  # systemctl restart apache2.service
+To upgrade MySQL v5.7 to 8.x follow [[https://www.javacodemonk.com/upgrade-mysql-from-5-7-to-8-on-ubuntu-18-04-bd9b5e46|this link]]
+To fix this locale error upon login:
+<code>
+-bash: warning: setlocale: LC_ALL: cannot change locale (en_US)
+</code>
+run the following:
+  sudo locale-gen en_US
+  locale -a
+and confirm you see en_US now.  See [[https://ubuntuforums.org/showthread.php?t=1675347&page=2]] for more info.