If i deactivate and reactivate the Sierra EM7345 inside the bios and reboot to ubuntu 15.04 beta2 with current updates, the card is working again.
So it might be a problem with the power settings/handling by the sierra card?!
If i deactivate and reactivate the Sierra EM7345 inside the bios and reboot to ubuntu 15.04 beta2 with current updates, the card is working again.
So it might be a problem with the power settings/handling by the sierra card?!