Have this problem reported last year, and got a confirmed bug 1612708.
Was in the meantime back to 14.04 LTS, but now upgraded to 16.04.2 LTS because some drivers have been available only for this release.
The problem in 16.04.2 LTS still exists. Very sad :-(
Have this problem reported last year, and got a confirmed bug 1612708.
Was in the meantime back to 14.04 LTS, but now upgraded to 16.04.2 LTS because some drivers have been available only for this release.
The problem in 16.04.2 LTS still exists. Very sad :-(