I have a w541 and encountered exactly the same problem when trying to install Ubuntu 14.04 LTS (both with USB and DVD live versions). I managed to get 15.04 working using a DVD and the same method as Arno Esser.
I hope that this problem will be addressed soon!
I have a w541 and encountered exactly the same problem when trying to install Ubuntu 14.04 LTS (both with USB and DVD live versions).
I managed to get 15.04 working using a DVD and the same method as Arno Esser.
I hope that this problem will be addressed soon!