Tag Archives: Ubuntu 12.04

Solve audio troubleshooting on Ubuntu and start planning to migrate to another Linux OS

It was just a simple system update which dropped off audio on my Ubuntu 12.04. It was really strange to admit that I had experienced a crash (better: an audio crash) on a Linux but the 12.04 Ubuntu actually caused similar problems to a numerous bunch of long-term aficionados around the world.

The real problem with the last Ubuntu versions is that this OS is not supporting properly “old” hardware as it did previously during so many years. Reading some other bug reports on the web I discovered that these audio troubleshooting crashes happen principally to “old” IBM ThinkPad and Dell. I hope Ubuntu developers will consider to solve immediately these kind of issues or many users certainly migrate to other Linux version.

In any case the best and complete guide to solve audio troubleshooting has been developed by Ubuntu itself. The guide is very detailed but, if you want to definitively solve this bug, you have to spend more or less 40 (forty…. sic!) minutes and follow all the 17 (seventeen… sic!) steps.

In my case the audio was back after the first step and I decided not to follow the other instructions but the audio troubleshooting comes back, more or less, every two months. Just to you if you want to spend 40 minutes only one time or a couple of minutes every two/three months.

When I consider all the problems I had with Ubuntu on “old” hardware starting from the 12.04 version, my advice is to start thinking about a migration to another Linux OS. I am testing some Ubuntu alternatives and in the next weeks I will post something about the tests I’m doing on old laptops. Stay connected!   AddThis

How to install Ubuntu 12.04 on old computers with non PAE CPU

When I tried to install Ubuntu 12.04 on an old ThinkPad X40 I was surprised to discover this warning on my screen:

This kernel requires the following features not present on the CPU:
pae. Unable to boot - please use a kernel appropriate for your CPU.

In few words I wasn’t able to install Ubuntu 12.04 because the kernel on Ubuntu 12.04 was not supporting my CPU and I was really upset because I have always promoted Linux distributions as the most versatile and appropriate OS to keep using “old” hardware.

Sincerely, as described in an older post, I previously decided to install MATE desktop environment because the graphic cards on many laptops didn’t support Unity and Gnome 3 but this was the first time I had to renounce the installation of Ubuntu. I didn’t want to surrender to this difficulty (that appeared to me as a bug)!

First of all, I discovered that pae is “a feature to allow 32-bit x86 processors to access a physical address space (including random access memory and memory mapped devices) larger than 4 gigabytes“. After I clarified this point, I was not sure that my processor was totally inadequate to support Ubuntu 12.04.

After some web surfing I discovery that there are two easy solutions to avoid this problem.

1 – As first solution you can install Lubuntu (my choice) or Xubuntu on your computer then you can install the ubuntu-desktop using the Package Manager.

2 – If you prefer not to use the Package Manager you can install Ubuntu 11.04 or 11.10 and then upgrade Ubuntu to 12.04.

More in general, it is also possible to assume that if you have a non PAE CPU, your hardware could not be able to support the Unity desktop. For  this reason you can keep your Lubuntu – Xubuntu (based on the light but effective LXDE desktop) or switch your desktop environment to Gnome (the Classic, of course) installing the gnome package instead of ubuntu-desktop.

In any case, if you want to know if your CPU supports pae you have to open a Terminal and type:

grep --color=always -i PAE /proc/cpuinfo

If something like “flags: fpu vme de pse tsc msr pae mce cx8…” outputs on your Terminal, you have a pae CPU otherwise your CPU doesn’t support pae.  AddThis

How to launch Pogoplug online services (as local disk) on Ubuntu 12.04 LTS

I confess that  I use Pogoplug as cloud server for my external hard disks because it is really simple to configure and  trustful.  Unfortunately the Linux version of the Pogoplug management software  is not so simple to configure and  has fewer features than the Windows and MAC versions.

Running Ubuntu 12.04 LTS I can manually mount the drives I connected to my Pogoplug device, following the path Network –> Windows –> etc.., but sometimes this way is not so fast and moreover I cannot access to Pogoplug Cloud.

Waiting for an updated software from the producer I decided to use the current version to automatize  the process and mount the drives connected to the Pogoplug and its cloud as if they were physically attached to my Ubuntu 12.04 LTS.

After a “classic” Google search on this topics I found different suggestions. Unfortunately I also had more than few problems to configure the software provided by Pogoplug because some tips were not so clear or easy as I desired.

By my experience, the fastest and reliable way to configure Pogoplug drives on Ubuntu 12.04 is the following:

– open Terminal and type sudo apt-get install fuse-utils

– open Synaptic Package Manager and be double sure you have yet installed these packages: fusesmb, fusedav, fuseext2, fusefat

– download the Linux software provided into the Downloads section of Plogoplug website, unzip it and save the file in your Home folder

– open Terminal and type: sudo usermod -a -G fuse $(id -u -n)

– log out and then log in again on your Ubuntu account to be sure that Fuse is correctly running

– open Terminal again and create a directory (in Media) to be used as mount point: sudo mkdir /media/pogoplug

– then type: sudo chown root:fuse /media/pogoplug

– and: sudo chmod 0775 /media/pogoplug

– in Terminal launch this command:

/home/yourusernameonubuntu/pogoplugfs --password yourpassword 
--mountpoint /media/pogoplug --user yourusername

where:

1. yourusernameonubuntu means you have to insert the name of User profile you use when you log in Ubuntu on your computer

2. yourusername and yourpassword are the username and password you use on the Plogoplug Website

Now, after some seconds an many automatic text lines, an icon named Pogoplug will appear on your desktop and you will be able to manage the online Pogoplug features as a local disk.

Don’t forget that you have to use keys -control+c-  in Terminal if you want to disconnect from  Pogoplug.

At this point the work is done but you might create a launcher icon in your (e.g.) Applications menu  following this instructions:

–  go to: System Tools –> Preferences –> Main Menu  and click on the group (menu) where you want to create your new launcher (in my case simply was  Applications)

New Item –> Create Launcher

Then fill the required fields with:

Type = Application in Terminal

Name = Pogoplug

Command =

/home/yourusernameonubuntu/pogoplugfs --password yourpassword 
--mountpoint /media/pogoplug --user yourusername

(as for the example above)

If you want to personalize the button you can also choose your favorite icon clicking on the picture on the left high corner.

On my side I also preferred to automatize the launch of Pogoplug command at each boot up in this way:

– go to: System Tools –> Preferences –> Startup Applications
– click on Add

– fill the fields:

Name = Pogoplug

Command = Same command line you used to start Pogoplug drive:

/home/yourusernameonubuntu/pogoplugfs --password yourpassword 
--mountpoint /media/pogoplug --user yourusername

(as for the example above)

So, starting now, you will have your Pogoplug drive connected each time you boot Ubuntu. You will not have any annoying Terminal lines.

Security  Warnings: don’t forget that the data you move to and back Pogoplug, are directed  through the web. This means that they could potentially be  intercepted (and read) by third parties but it’s also necessary to  specify that, if you configure it on the website Settings area,   Pogoplug uses SSL (HTTPS)  to encrypt the connection with its servers.

Anyway, don’t forget that  the data you store into Pogoplug are not encrypted. If you want to join a  better level of security you can encrypt previously your data or  your disks using different softwares as TrueCrypt or the command  dm-crypt (for more details on this topic also visit http://archlinuxarm.org/forum/viewtopic.php?t=1761&p=9723).  AddThis