[ubuntu-uk] 14.04 and laptop battery life

[Liam Proven]

On 9 February 2014 12:49, Gordon Burgess-Parker
<gordon at gbpcomputing.co.uk> wrote:

You're sending HTML formatted email to the list, which is a no-no and
breaks quoting. Please turn it off. I suggest you leave it off
globally; formatted email is bad netiquette.

>> There does seem to be a problem with Lenovo U410s, the NVidia graphics card
>> being one of them (it uses two different types of graphics display) The
>> solution to that seems to be to set the BIOS to use only VGA, and that's
>> gained me an hour and a half.
>
>> Your power management is not working correctly, I would say.
>
> How to I fix the Power Management?

Ah, you have given me a clue in that message. Your machine has dual
GPUs and switches between them? Cf. nVidia Optimus?

As far as I know that is still not well-supported on Linux and will
not work properly.

However, there is a somewhat-experimental tool to switch between them,
called "bumblebee" I think.

There is mention of it here:

http://askubuntu.com/questions/218865/lenovo-u410-ultrabook-ubuntu-support

& here:

http://www.linlap.com/lenovo_ideapad_u410

Also it has both an SSD and an HD. As those posts mention, you
probably want to disable RAID and separately install the core elements
of your / filesystem on the SSD and the rapidly-changing parts on the
HD.

This is *not* trivial stuff. If that sounds scary to you, then this is
possibly not the right machine to use with Linux. Either stick to
Windows, or change hardware. Sorry that this is not good news.


-- 
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