My printer at office is HP LaserJet 3055 and I have already added to Ubuntu Dapper for so long. It worked just well. Today I would like to print the first page after upgraded to Edgy. The result page is incorrect since it only printed the cropped page. Note that I printed a pdf through evince. I guessed that the problem should be incorrect driver due to upgrading last night so I just simply removed it and added a new one. Unfortunately, I was unable to add a new printer anymore. So I started gnome-cups-add on a shell prompt. Below is what I get.

** (gnome-cups-add:17835): WARNING **: IPP request failed with status 1280

I have just upgraded my laptop to Ubuntu Edgy Eft after waiting for so long. After the upgrade, I was unable to start VMware Player because of missing some libraries. The symptom was that the VMware process consumed 100% utilization and I had to kill it manually. There are several threads talking about this issue, e.g., Ubuntu Forums.

I decided to upgrade my laptop to Ubuntu Edgy Eft early to see what it is yesterday. At first, I downloaded a desktop disc for off-line upgrade. Sadly, I did the wrong thing. After inserted the cdrom disc, I got a dialog box indicated that we were going to upgrade distribution. However, I preferred to upgrade in text mode so I cancelled it immediately. That was just a problem.

I'm going to upgrade my laptop from Dapper to Edgy very soon. One common procedure is to upgrade all packages to the latest versions before upgrading the whole distribution. Then I found something weird because I usually used graphical tools to upgrade packages but now I run apt-get as follow.

sudo apt-get update
sudo apt-get upgrade

I found a proof of concept of green power at EcoGeek. It's all about making a cluster with processing power of 22.7 GHz using 30A power from vegetable-oil-powered generator.

Since last several months, I joined in 2006 as a in a 's project. It was a good experiences to work with someone far away from me to develop something that everyone could use it freely without any restrictions.