May 25th, 2010 at 11:46am
Following Sun Microsystem acquisition by Oracle also VirtualBox releases signing key has been updated to reflect the new ownership.
This would prompt you with error:
W: A error occurred during the signature verification. The repository is not updated and the previous index files will be used.GPG error: http://download.virtualbox.org lucid Release: The following signatures couldn’t be verified because the public key is not available: NO_PUBKEY 54422A4B98AB5139
To fix this problem simply issue the following command in a terminal shell:
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Tags: fix
May 12th, 2010 at 5:55pm
It seems there is some bug that prevents a live usb instance of kubuntu lucid 10.04 from booting two or more times if it has been set to allow for extra space settings storage.
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Tags: fix
May 5th, 2010 at 9:51am
The following tutorial explains how to create a larger casper-rw device for your Ubuntu based flash drive install. This would enable you with more persistent storage space for saving changes.
The following steps need to be performed from a different linux environment than the one you’re willing to modify. Either use an existing setup, a live CD/DVD or a different USB bootable key.
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April 22nd, 2010 at 1:19pm
It may happen to decide having a try with one of the many customized Ubuntu distributions available, but eventually deciding to convert it back to a standard Ubuntu setup without reinstalling the whole OS.
Playing around a little bit with the installed software packages would probably lead you to remove those meta-packages that keep the record of the distribution version, eventually leading to a system not able to upgrade any more. The side effect is that you cannot access System -> Administration -> Software Sources and the menu Repositories in Synaptic package manager any more too! Here you would find out how to solve this problem.
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Tags: fix
March 9th, 2010 at 11:45am
eee-control is so far the best utility for controlling Eee PC hardware under Linux.
It definitely does its job, instead of the now obsolete not-working-at-all eee-applet program, and has is even better than eeepc-tray, whose development has now been explicitly stopped by its author, for a couple of reasons:
- has better hardware control for powersaving (e.g. this can also toggle the card reader)
- does not depend on the mono runtime environment, thus requiring far less resources both on the hard disk and in the RAM memory.
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February 21st, 2010 at 6:05pm
Nowadays more and more cameras that support higher and higer resolution are available to the consumer market at an affordable price. The question is, is it really always that useful to have a 12Mb jpeg image?
In linux you can downsize your pictures by reducing the image resolution and size automatically through the command line with the tools provided by ImageMagick program.
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January 2nd, 2010 at 1:12pm
Probably the main reason I consider HP Pavilion laptops worth buying is that they can be opened and disassembled very easily. This enables you (or your local computer repair shop) to perform a whole set of maintenance activities and to upgrade most parts without needing to send the laptop to some far HP authorized center. This post contains pictures of all the disassembling process I performed on a friend’s HP Pavilion DV6000 series laptop in order to replace its noisy faulty fan. You may click on each picture to enlarge it.
Benefits of this capability are:
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January 2nd, 2010 at 12:21pm
Today I’ve found this page, I have to admit this guy is indeed clever!
Laptop Cooling. It is the strangest thing that all laptops have the same design fault. If operated on the “lap”, the needed cooling will be blocked off, it will overheat, and may eventually abruptly halt. Here’s how I modified mine so the machine would cool properly. Click on any picture for a larger size view.
Check it out!
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December 17th, 2009 at 6:08pm
Although you can use K9Copy to extract the audio track from DVD some times is more convenient to use the commanline.
Ripping the sound track of a DVD movie through the terminal can be achieved using transcode and lsdvd commands.
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December 12th, 2009 at 6:53am
A partire dalla versione ddi Ubuntu Karmic 9.10 il nuovo gestore dell’avvio GRUB2 viene installato di default sulle nuove installazioni (non negli aggiornamenti).
GRUB2 presenta una serie di miglioramenti, tra cui il supporto nativo per una varietà maggiore di filesystem, una configurazione modulare, il supporto per il ripristino automatico delle impostazioni in caso di necessità e, appunto, il più sfizioso: il supporto per immagini di sfondo ad alta definizione.
Read the rest of “Impostare un’immagine di sfondo all’avvio di Ubuntu linux GRUB” »
