OK, I've tested a few of the mainlines (binary chop) and as far as I can tell the last kernel that worked OK was 4.3.6-040306-generic (http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.3.6-wily/). So it looks to me as if its since the start of the 4.4... series.
OK, I've tested a few of the mainlines (binary chop) and as far as I can tell the last kernel that worked OK was 4.3.6-040306- generic (http:// kernel. ubuntu. com/~kernel- ppa/mainline/ v4.3.6- wily/). So it looks to me as if its since the start of the 4.4... series.