14.04 not supported?

Hello,

you have right about the error messages in relation with the supported version. You are not doing anything wrong.

For now, Optimus Kernel support is restricted to the latest stable release of Ubuntu, only! At current time meaning Ubuntu 15.10, only.

Optimus Kernel will be upgraded soon to support the upcoming Xenial Xerus (16.04 LTS).

- But I don't want to upgrade to 16.04, yet. Does this mean I cannot install and use Optimus Kernel ?
- Partially.

You can install and use Optimus Kernel from the PPA with a "hack".
Add the PPA as usual (add-apt-repository ....etc) , but before running a "sudo apt-get update" , go and edit the sources.list file.

Following command, probably, will open the correct file for editing:

sudo gedit /etc/apt/sources.list.d/utappia-ubuntu-optimus-trusty.list

Edit the first line and change where you see trusty to vivid. Proofread , save and close the file.

Now run

sudo apt-get update (you shouldn't see any related errors)
sudo apt-get install linux-image-optimus linux-headers-optimus

Enjoy !

P.S.
You should have updates from the PPA without any problem. The way we added the PPA does not differ from the usual, only thing we did was to modify , manually, the sources.list file to point to the right direction/Ubuntu version.

Kind Regards

Thanks for your reply, NickTh. I just tried changing 'trusty' to 'vivid' but I still get the same error:

W: Failed to fetch http://ppa.launchpad.net/utappia/optimus/ubuntu/dists/vivid/main/binary-amd64/Packages 404 Not Found

W: Failed to fetch http://ppa.launchpad.net/utappia/optimus/ubuntu/dists/vivid/main/binary-i386/Packages 404 Not Found

...because the latest 'stable' release is not vivid, but wily. Just changed this and now I can install the optimus kernel correctly. Thanks!

Hello,

Yes, my bad. I meant Wily (the latest, stable and supported, currently).
Sorry for the confusion.

Glad it worked, enjoy Optimus !

Best Regards.