Install older kernel?

[SCBrazil]

I using an Acer 751h netbook with the intel dma500 chipset. To get the corrent resolution for this machine I need to install poulsbo. This worked okay with karmic 9.10 and the .14 kernel. However newer kernels such as .20 or .21 don't seem to work. Can I install the .14 kernel into the Lucid and if so, how?
Thanks for your time.

[Snowhog]

Re: Install older kernel?

The 'pat' answer would by 'yes, you can' but, I don't know if using a kernel built for Karmic is going to work in Lucid. Pulling the kernel via Synaptic, kpackagekit, or the CLI would require that you add the repository back for Karmic, update the package cache, and then pull/install the desired kernel.

But again, I don't know what this would do.

[SCBrazil]

Re: Install older kernel?

Thanks for your answer Snowhog. I am dual booting 9.10 with Lucid as an experiment for the time being. So I'm willing to try and see what happens. If it doesn't work out, I'll just re-install.
But how do I 'pull' the .14 kernel from Synaptic? Do I have to use the search function in there? Is it a (fairly) simple process.

[Snowhog]

Re: Install older kernel?

You have to add the appropriate 'karmic' repository. Given that you are using Lucid now, your Ubuntu repositories will now reference Lucid, which is why you can't find the lower, Karmic kernels via a search.

[Rog131]

Re: Install older kernel?

An example

Making an additional sources list:

kdesudo kate /etc/apt/sources.list.d/karmic_sources.list

Dropping there:

deb [url]http://archive.ubuntu.com/ubuntu/[/url] karmic main restricted

deb [url]http://archive.ubuntu.com/ubuntu/[/url] karmic-updates main restricted

Saving and exit.

[img width=400 height=282]http://img341.imageshack.us/img341/4195/others.png[/img]

Updating package database

sudo apt-get update

Now there are - among other things:

apt-cache search linux-image

...
linux-image-2.6.31-21-generic - Linux kernel image for version 2.6.31 on x86/x86_64
...

Installing:

sudo apt-get install linux-image-2.6.31-21-generic linux-headers-2.6.31-21-generic linux-backports-modules-2.6.31-21-generic

Reading package lists...
Building dependency tree...
Reading state information...
The following extra packages will be installed:
linux-headers-2.6.31-21
Suggested packages:
fdutils linux-doc-2.6.31 linux-source-2.6.31
The following NEW packages will be installed:
linux-backports-modules-2.6.31-21-generic linux-headers-2.6.31-21
linux-headers-2.6.31-21-generic linux-image-2.6.31-21-generic
0 upgraded, 4 newly installed, 0 to remove and 0 not upgraded.
Need to get 40.7MB of archives.
After this operation, 177MB of additional disk space will be used.
Do you want to continue [Y/n]?

Gain

Lower CPU load. Here the average CPU load (idle) is lower 10-15 % with the older kernel.

Loss

KMS/DRI2 - is it loss ? Here the gain seems to be greater than the loss.