kernel crash with lite-on sata controller Dell XPS 13 9343

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Hi all

I have been asked to post here based on the bug I filed at Ubuntu:

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1516215

I have the newest kernel running:

cat /proc/version
Linux version 4.5.0-040500rc5-generic (kernel@tangerine) (gcc version 5.2.1 20151010 (Ubuntu 5.2.1-22ubuntu2) ) #201602201730 SMP Sat Feb 20 22:32:16 UTC 2016


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.

best regards
Carolin
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