I tested mainline ( http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.15-rc9/linux-image-4.15.0-041500rc9-generic_4.15.0-041500rc9.201801212130_amd64.deb ) as I have been asked to do on other kernel issues. The problem persists.
I tested mainline ( http:// kernel. ubuntu. com/~kernel- ppa/mainline/ v4.15-rc9/ linux-image- 4.15.0- 041500rc9- generic_ 4.15.0- 041500rc9. 201801212130_ amd64.deb ) as I have been asked to do on other kernel issues. The problem persists.