I can’t claim to have figured this out by my self…
EDIT: For whoever had the problem with blue video output – You don’t have to deactivate hardware acceleration. When using Nvidia drivers and VDPAU you should locate libflashplayer.so and run the following command in its directory:
sudo perl -pi.bak -e 's/libvdpau/lixvdpau/g' libflashplayer.so
Mine were located in: /usr/lib/flashplugin-nonfree/
Useful commands for X11
Welcome to this short summary of useful commands for X11.
I have written it to avoid having to resort to googling next time I forget Xephyr.
Also it might be interesting for others as well…
Servers inside your X11 server
xoo with a ipaq3800 skin
Why would you want to run a X11 server on your X11 display
Well for starters you might want to try out your UI on a device with a lower screen resolution than your development machine.
You might also want to code an application running at a different colour depth than you desktop, maybe a rotozoomer in 16bit
You may also simply want to try out a couple of applications on a low res. screen prior to buying a table with a low res. screen…
A wrapper for xnest and Xephyr that allows one to create a skinned X11 display.
You can even have working buttons that you can click.
sudo apt-get install xoo
Haven’t used it myself.
As far as I know Xephyr has some advantages in the supported extensions over xnest
sudo apt-get install xnest
Based on the kdrive xserver supporting extensions such as render and composite.
xnest package actually recommends this package over it self…
sudo apt-get install xserver-xephyr
Utilities and tools
Xpra aka. “screen” and turbo for X11 applications
Screen is a wonderful tool for command line tools.
Xpra gives you the same capacity to leave the program running on the remove even if you close/losses the connection.
Also xpra “compresses” the stream of X11 commands by using a different protocol than X11, reducing the problems caused by low latency connections.
sudo apt-get install xpra
I recently bought a HP Proliant N40L “server” as an upgrade to my QNAP 409.
And as with my QNAP I would like a filter that prevents most of the dust in my living room from entering the Proliant.
Before I build a filter out of a piece of cardboard and some paper towel for the QNAP I have once had to vacuum it due to a slight build-up of dust.
After the filter the inside remained a lot cleaner and I only had to clean/replace the filter, a lot safer and easier than cleaning the whole thing.
If some paper towel works for a QNAP then why not a Proliant?
Anyway here is a tiny How to “build” a simple and cheap filter for a Proliant N40L
First you need to remove the plastic that covers the door.
In order to do that you need to remove the lock this involves: Removing the screw holding the metal “bar”, then removing the nut that holds the locking mechanism in place.
You can now remove the plastic covering the metal door by carefully releasing the thee plastic hooks at the top of the door.
Next you need to cut a 19×14.5 cm piece of paper towel.
I removed half the layers of paper to keep the pressure drop across the filter low.
Last time around I used paper towel with only two layers which was much easier to separate than the 4 layer stuff I used this time…
Now you need to tape the paper towel onto the outside of the metal door.
If the Proliant is running and the door is closed the paper will be held in place by suction, making it a very easy job indeed.
Cut a hole in the paper towel for the locking mechanism.
Put the plastic covering back on, hiding the filter.
Reinstall the locking mechanism.
Close the door and admire your handy work while drinking your favourite beverage.
(Beer can be used during this step)
On my Debian box the following were used:
/etc/ssl/certs/dovecot.pem and /etc/ssl/certs/dovecot.pem were the default locations check your /etc/dovecot/dovecot.conf before running.
openssl req -new -x509 -nodes -out /etc/ssl/certs/dovecot.pem -keyout /etc/ssl/private/dovecot.pem -days 3650
I got tired of renewing the certificate so I issued one that lasts 10 years.
(apparently it does not take that much to make me tired)