Hello Chris, Writing to you direct rather than through the bug - hope you don't mind. I too had my first failure today using the new kernel, manifesting itself in the same way. It's getting a bit tiresome now and I have little faith in it being corrected. I have spent quite a bit of time researching the issue and trying a few things out to no avail. There are other things needing my attention just now. So, it was always in my plans to install 18.04 LTS at some stage. Rather than do a fresh install of 16.04 LTS which I had thought was a way of hopefully overcoming the problem, I may as well go for 18.04 LTS. I just need to plan things out so that I manage to safely backup my documents and all my settings (I have very low vision and my settings are important to me). The planning and preparation in itself will take some time. When I get round to it I will let you know how things go. Best Regards Dave On 24 April 2018 at 22:29, Chris Perry