It might also be good to test the latest mainline kernel to see if this issue also exists upstream, if it is fixed upstream and/or if this regression is Ubuntu specific.
The mainline kernel is available from: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.19-rc7
Some documentation regarding mainline is available here: https://wiki.ubuntu.com/KernelMainlineBuilds
It might also be good to test the latest mainline kernel to see if this issue also exists upstream, if it is fixed upstream and/or if this regression is Ubuntu specific.
The mainline kernel is available from: kernel. ubuntu. com/~kernel- ppa/mainline/ v4.19-rc7
http://
Some documentation regarding mainline is available here: /wiki.ubuntu. com/KernelMainl ineBuilds
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