Recently I got a Raspberry Pi 2, which is said to be 6 times faster than the original Raspberry Pi B. This makes it more suitable for tasks like being a media player.

Getting a full CanaKit Raspberry Pi 2 Ultimate Starter Kit adds many components for experimentation (LEDs, resistors, breadboard, 40-pin ribbon cable, ...etc.). The price was attractive since with Amazon you get free shipping, and therefore it will be cheaper than getting it directly from CanaKit.

In mid June, my laptop hard disk died. Suddenly, there was a flurry of disk I/O wait, then applications started to report errors trying to write anything.

With a 500GB 2.5" laptop disk lying around that was used for backup, I replaced the dead disk with this one.

I had an Ubuntu Server 14.04 CD lying around, and therefore did not bother to download Kubuntu 14.04.

My laptop's home directory is backed up daily via ssh to the server. So my data was safe.

Attached are the slides from my presentation tonight at the KWLUG on how to flash a custom Android ROM (in this case OmniROM) on the Acer Iconia A500 tablet. The podcast is here.

The whole process was done without any Windows software. All was done from Linux.

• Getting a CPU ID using APX mode, then getting an SBK (Secure Boot Key) from that.
• Installing Timmy Dean's V4 Rollback.

More and more large companies are implementing more restrictive email policies to fight increasing SPAM. These are mainly DMARC. Such companies include Yahoo, Cox, Verizon, and others.

As this happens, some of your legitimate email may be rejected because email servers are more restrictive.

In order to minimize the probability of your email being rejected, the following describes how to implement Sender Policy Framework (SPF) and DKIM on your already running Postfix mail server.

If you are, like me, an Ubuntu user who is annoyed when doing aptitude full-upgrade because it stops and displays the changelog until you press "q", then here is why this happens, and how to change the behavior.

The reason this happens is that the package apt-listchanges is installed on your system. This package lists the changes before applying them.

However, by default, it stops the upgrade process until the user has provided input. The silly part is that there are no choices at this point, the user must dismiss the output and nothing else can be done.