Watch out for kernel >= 3.0 power saving regressions…

November 30th, 2011 ntavares Posted in en_US, fedora, linux driver, performance, ubuntu No Comments »

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I was reading Phoronix comprehensive tests about recent power saving regressions - specifically important for laptops -, and would like to point out this to everyone, since, according to the article, it is not receiving much attention from kernel maintainers. As you know, I recently installed a Sony Vaio and an HP G62. Just to give an idea of what I’m talking about, have a look at their chart:

Phoronix Tests on power saving regressions

Also worth mentioning are the Intel graphics tuning options. I’m currently running these on both computers (as both have an i915 card), and yet didn’t find any problem…?

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HP G62

October 4th, 2010 ntavares Posted in en_US, hardware, linux driver, ubuntu No Comments »

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Some weeks ago I bought this very cool notebook, HP G62. I was quite impressed by its features, when compared with its price. I decided to go for Ubuntu 10.04 (Lucid), as I did for the Aspire D250, and got surprised the sound didn’t work out of the box. Everything else did, as it’s quite usual with Ubuntu - thanks to everyone involved in it - and a quick search was kind of scary.

Obviously I looked in the wrong places, and the solution is pretty easy, which I only now had time to fix. This sound card is reported as Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 05) and its required modules have been moved to a separate package. To get support for it is just a matter of:

apt-get install linux-backports-modules-alsa-2.6.32-23-generic

In fact, I really love this laptop. The only thing I dislike, well, *hate* is the keyboard. Someone at HP Labs wasn’t very smart, since they added a left column of (unusefull) “multimedia” keys right next to the standard layout. So, while you’re not used to it (which happens a lot when you switch between multiple computers all the time), you keep launching the calculator, printer spooler or even the e-mail client, just to name a few. As a matter of fact, it seems HP made everything so well that they couldn’t sell perfection so cheap. It’s obvious the layout designer doesn’t use a keyboard at all :-)

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