Can you test the latest upstream stable kernel to see if this regression is already fixed? It can be downloaded from:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.54
If the bug does still exiest in 4.4.54, we can perform a kernel bisect to identify the commit that introduced the regression.
Can you test the latest upstream stable kernel to see if this regression is already fixed? It can be downloaded from:
http:// kernel. ubuntu. com/~kernel- ppa/mainline/ v4.4.54
If the bug does still exiest in 4.4.54, we can perform a kernel bisect to identify the commit that introduced the regression.