OpenVPN

Setting Key password in the configuration file

# nano /etc/openvpn/client.conf

...
askpass /etc/openvpn/client.pass
ca /etc/openvpn/ca.crt
cert /etc/openvpn/client.crt
key /etc/openvpn/client.key
...

The file /etc/openvpn/client.pass just contains the password. And you should chmod this file to 600.

Note: This tip was found in Stack Overflow - Pass private key password to openvpn

Warning: This completely defeats the purpose of password-protected keys, although it can be necessary sometimes. You can remove the password protection if it gets in your way.

PHP

First, find out which files are trying to load the above extensions:

# grep -Hrv ";" /etc/php5 | grep -E "extension(\s+)?=="

An example output: /etc/php5/mods-available/gd.ini:extension=gd.so /etc/php5/mods-available/pdo_sqlite.ini:extension=pdo_sqlite.so /etc/php5/mods-available/pdo.ini:extension=pdo.so /etc/php5/mods-available/pdo_mysql.ini:extension=pdo_mysql.so /etc/php5/mods-available/mysqli.ini:extension=mysqli.so /etc/php5/mods-available/mysql.ini:extension=mysql.so /etc/php5/mods-available/curl.ini:extension=curl.so /etc/php5/mods-available/sqlite3.ini:extension=sqlite3.so /etc/php5/conf.d/mcrypt.ini:extension=mcrypt.so /etc/php5/conf.d/imagick.ini:extension=imagick.so /etc/php5/apache2/php.ini:extension=http.so

Now just find the files that are loading the extensions that are causing the errors and comment out those lines with a ;. For some reason this happened to me with the default install of Ubuntu, so hopefully this helps someone else.

Microsoft Natural Keyboard 4000

Edit section # Microsoft Natural Ergonomic Keyboard 4000 as you like

# sudo vim /usr/lib/udev/hwdb.d/60-keyboard.hwdb

Update the hardware DB:

# sudo udevadm hwdb --update

Unplug and plug back in the keyboard.

from http://blog.philippklaus.de/2012/05/microsoft-natural-ergonomic-keyboard-4000-with-mac-os-x-and-linux/

Enabling tap-to-click in GDM

You have to export $(dbus-launch) and set the gsettings backend (tested on archlinux with gdm 3.18.2 and 3.26.2.1-1):

Switch to a VT (e.g. Ctrl+Alt+F3), login as root and then switch user to gdm:

# su - gdm -s /bin/sh

Then run:

# export $(dbus-launch)

And finally:

# GSETTINGS_BACKEND=dconf gsettings set org.gnome.desktop.peripherals.touchpad tap-to-click true

Run exit or hit Ctrl+D to return to root account. And restart the display manager:

# systemctl restart gdm

Reverting is pretty much the same, just change true to false @ step 2.

Links

Local ArchWiki HowTo (by Lahwaacz)