Try to blacklist module 'acer_wmi' as described in : https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/689529/comments/20 Please add a comment on whether it helps.
Try to blacklist module 'acer_wmi' as described in : /bugs.launchpad .net/ubuntu/ +source/ network- manager/ +bug/689529/ comments/ 20
https:/
Please add a comment on whether it helps.