Hello, Carolin.

On Thu, Feb 25, 2016 at 10:45:10PM +0100, Carolin Latze wrote:
...

Since the beginning (started with 3.19.x kernels on this notebook) I had
problems with this sata controller:

03:00.0 SATA controller: Lite-On Technology Corporation Device 0224 (rev 10)

Very often during boot, the boot just failed with error messages like

ata1.00: exception... (I was only able to capture them by taking a picture:
https://launchpadlibrarian.net/227876135/IMG_20151128_230313.jpg)

Then I keep trying, sometimes I boot into Windows inbetween, and eventually,
the kernel comes up.

Then, when running and putting a lot of load on the disk (e.g. running dump
or a simple update via apt-get upgrade), the system looses its disk and I
have to hard reset.

The machine runs perfectly fine under Windows, so I don't believe it is a
hardware issue.

I hope there is a solution to this issue.

Can you please boot with libata.force=noncq and if that fails post the
kernel messages of the failure?

Thanks.

-- 
tejun