Codigo Manso » linux

Google Chrome for Linux

Pau Sanchez — Wed, 09 Dec 2009 06:09:44 +0000

Today I’ve received an e-mail from Google telling me that they launched the new beta for linux of their browser Google Chrome. It’s been a while since they first launched a version for Windows.

As you might expect, I’ve downloaded and installed this brand new version of Chrome for Linux and I installed on my Ubuntu 64-bit laptop.

The truth is that it caused me a great impression, when I launched google-chrome command, the browser just appeared in a fraction of a second. I though Opera was quite amazing at rendering the browser, but now I think Chrome is even faster.

The next thing I tried is the typing test of ARTypist, and it worked amazingly well. I know it uses internally a lot of javascript, and it all works great. Even the CSS displays properly well, and since several months ago I haven’t tried to run ARTypist on Chrome

Finally, after visiting another couple of web sites I realized flash worked as well without me having to install any plugin. I don’t know if it has detected the flash plugin was already installed (probably), but it’s great having it working on all pages. At the first sight, it seems the browser seems it’s working well

Right now I’m not planning to change Firefox by Chrome, but at least I can test my webs on Chrome without having to open a virtual machine with Windows.

[SOLVED] The kvm-qemu virtual machine ignores shutdown and reboot

Pau Sanchez — Thu, 26 Nov 2009 08:46:55 +0000

These days I’ve been playing with KVM (Kernel-based Virtual Machine). All started with a kernel upgrade and VMWare Server stop working, and getting lots of errors when executing vmware-config.pl while recompiling the modules.

Anyway, what matters is that I’ve migrated a couple of virtual machines from VMWare Server 2 to qemu-kvm.

One of the virtual machines ignored me completely when I pressed the “Shutdown” and “Reboot” buttons in the Virtual Manager. The virtualized/guest machine was a Ubuntu Server.

After searching in Google for a while I found a solution! Fortunately it was an easy solution, although I had to search for a while. The package acpid was missing.

The problem was solved after installling acpid package.

$ sudo apt-get install acpid

After installing this, the ’shutdown’ and ‘reboot’ buttons worked perfectly!

Just in case you have the same problem when virtualizing a Windows machine (yes, I had the same problem), the problem is in the configuration of the virtual machine. The solution I’ve found is to edit the configuration and between and add and . After doing this you will probably have to reinstall windows, or repair it using the installation CD or iso (I think there is another way of doing this without reinstalling, but you will have to use Google this time).

Finally, I just want to mention that the Virtual Manager in linux surprised me, it’s simple but quite functional. It’s not as functional as virsh command for editing virtual machine configurations, but you can do the basic, and install new virtual machines from the Virtual Manager GUI which is always a good thing.

How to get the UUID of a disk or partition in Ubuntu

Pau Sanchez — Mon, 23 Nov 2009 15:33:06 +0000

Sometimes it can be very useful, and even necessary, to know the UUID (Universally Unique Identifier) of a disk or partition in Linux.

Nowadays the configuration for mounting disk partitions on linux (the file /etc/fstab) uses the UUID instead of the device name (/dev/hda1, /dev/sda1 …).

If you need to know which is the UUID of a particular device you can run the blkid command. E.g:

$ sudo blkid /dev/sda1
/dev/sda1: UUID="8b6ec31c-1f41-49f3-82da-d2ab0f0fa312" TYPE="ext3"

If you don’t like this command, or you think you cannot remember it, there is another way of knowing the UUID. If you have udev in your system (I think is udev the one that updates the list), you can go to /dev/disks/by-uuid/ folder and run a list command (ls). E.g:

$ ls -l /dev/disks/by-uuid/
lrwxrwxrwx 1 root root 10 2009-11-19 07:56 8b6ec31c-1f41-49f3-82da-d2ab0f0fa312 -> ../../sda1
lrwxrwxrwx 1 root root 10 2009-11-19 07:56 626adc53-3478-4eb1-9f68-dc0b6f9308e7 -> ../../sda2
lrwxrwxrwx 1 root root 10 2009-11-19 07:56 9cfc5c6d-f343-411e-ac59-31eee6b12a9b -> ../../sda3

The advantage of this command is that we don’t need administrator privileges, and it’s easier to remember

Installing Canon PIXMA iP2600 printer in Ubuntu 9.04 64-bits

Pau Sanchez — Thu, 04 Jun 2009 05:43:14 +0000

While I was in UK, I bought a Canon PIXMA iP2600 printer. It was not expensive at all and the ink was not as expensive as other printers, so I though it would be a good purchase for the price.

The thing is that when I tried to install the printer in Ubuntu 64-bit, there were no available drivers, and althought there were several threads explaining what to do, I never got it working (I swear I spent quite amount of time trying to install the printer, but there was no way).

Yesterday I updated ubuntu, and I saw some printing-related packages updated, so I thought: “let’s try again”. Now my printer works!!

As I said before, the Canon drivers for PIXMA iP2600 are only available for 32-bits, and I’m using a 64-bit ubuntu installation, so a small trick should be done for installing those drivers (a trick that did not work 3 months ago).

So, if you have a Canon PIXMA iP2600 or similar, here is what I did to get it working:

Go to Linux Printing and look for your printer (in my case PIXMA iP2600)
- I found this page for the drivers of Canon PIXMA iP2600
I download the drivers for 32-bits operating systems (there are no 64-bit versions of these drivers):
- cnijfilter-common_2.90-1_i386.deb at http://support-asia.canon-asia.com/contents/ASIA/EN/0100118902.html
- cnijfilter-ip2600series_2.90-1_i386.deb at http://support-asia.canon-asia.com/contents/ASIA/EN/0100119102.html

I forced the installation of both packages using dpkg:

sudo dpkg -i --force-architecture cnijfilter-common_2.90-1_i386.deb

sudo dpkg -i --force-architecture cnijfilter-ip2600series_2.90-1_i386.deb

And finally I connected the printer USB to my laptop, I opened the Printer Manager (System -> Administration -> Printing), and I clicked on New Printer button, and after clicking next next a couple of time I clicked on Finish (without changing anything). The printer manager added the new printer and asked me to print a test page and…
voila! The page has been magically printed!