Comment 36 for bug 1269777

Yesterday evening I applied the Thinkpad dock / undock scripts from comment #34 (https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1269777/comments/34).

I also installed tlp, which cares mainly for network interface switching upon dock / undock evnets (see config attached).

I rebooted the pc with the mainline kernel and switched the BIOS powermanagement on:

- BIOS:
      SATA: AHCI,
      POWER: PCI AUTOMATIC
      PCIE power management AUTOMATIC

A couple of docking / undocking, suspend / resumes, hibernates which worked right away.
The computer was running the whole night.

When I analysed the syslog this mornning, there occured some hard resettings of the ata2 device (dvd) within the night:

 - The DVD cannot mount any devices.
 - Network interface eth0 is dead
 - Ata1 is living (SSD).

But I think it is just a matter of time, when the SSD becomes unavailable.

- Suspend / resume

Worked, but did not change anything.

- Eject of the ultrabay (which I do with this script: http://www.thinkwiki.org/wiki/How_to_hotswap_Ultrabay_devices#Script_for_Ultrabay_eject)

This brought back
- the ata2 device
- AND the network interface as well.