Minimal xorg screen locker except it doesn't touch the screen so it is more correctly describes as a xorg input locker.

Simplelock has it's own password and does not use the system password.

It's based on pyxtrlock.

It's mostly written using XCB instead of Xlib, although some Xlib/XCB interaction is still necessary.

Simlp lock doesn't need any special privileges.

simplelock is a even simpler than it's predecessor, it's a very minimal X display lock program. While simplelock is running, it doesn't obscure the screen, only the mouse and keyboard are grabbed and the mouse cursor is optionally hidden. Output displayed by X programs, and windows put up by new X clients, continue to be visible, and any new output is displayed normally.

In good Unix tradition, simplelock provides no visual feedback during password entry. You simply type your password at it, followed by Enter or Newline. Pressing Backspace or Delete erases one character of a password partially typed; pressing Escape or Clear clears anything that has been entered.

Like simplelock will ignore further keystrokes until a timeout has expired after too many attempts have been made in too short time.

Easiest way to install is using pip

$ pip3 install https://github.com/christer/simplelock/archive/devel.zip

Clone and install from source simplelock:

$ git clone git://github.com/christer/simplelock.git
$ cd simplelock
$ sudo python3 setup.py install

Once this is done, you need to set your password:

$ simplelock -p

Then you should be able to simply lock your display by running:

$ simplelock

If you would like to automatically lock your screen after some idle time, we recommend the xautolock tool. Just add something like

xautolock -locker simplelock -time 5

to your X autostart file to lock the screen with pyxtrlock after 5 minutes idle time. xautolock has many other useful features, see its documentation. Most distributions provide an xautolock package with a man page. An alternative to xautolock is the use of autolockd which also monitors for lid close and suspend events.

Additional input devices other than the keyboard and mouse are not disabled.

Although this is not a bug, please note that simplelock does not prevent a user from switching to a virtual terminal, so be advised to always log out from your terminals.

The lenght of the password is limited to 100 KiB to prevent memory exhaustion attacks. This limit can only be adapted in the source code.

Please report any new bugs you may find to our Github issue tracker.

Password is set with simplelock --passwd

• Python ≥ 3.0
• libxcb
• libxcb-image
• libX11 ≥ 1.4, or libX11 ≥ 1.2 compiled with XCB backend

• Christer Sjöholm

Authors of pyxtrlock:

• Leon Weber [email protected]
• Sebastian Riese [email protected]

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.