[08:42] <juergh> @uschcld Not everybody is in your time zone so you can't expect real-time responses. It might well be that a stable update fixed your problem. We haven't really debugged your specific issue but if you say it's no longer a problem with an updated Ubuntu kernel then we claim it 'Fix Released' without knowing the root cause of the issue nor which specific patch fixed it. We simply don't have the resources to do more than that.
[08:43] <juergh> @uschcld When you say 'propagte to supported kernels', which specific kernels do you refer to? In the LP ticket you mention 4.19 which is not a supported kernel version in any Ubuntu release.