I tried installing various other kernels thinking that it might fix this problem but no luck. Mine is Dell XPS 8930 Desktop so I don't power cable should be an issue for laptops. Recently my other Dell XPS laptop got a BIOS update. It is running Windows 10 dual boot with Ubuntu 18.04 LTS - I am not going to upgrade ubuntu due to this issue.
I am posting my updates on askubuntu.com also: /askubuntu. com/questions/ 1243328/ dual-boot- windows- 10-ubuntu- linux-18- 04-lts- upgrade- to-20-04lts- kernel- 5-4-is
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I tried installing various other kernels thinking that it might fix this problem but no luck. Mine is Dell XPS 8930 Desktop so I don't power cable should be an issue for laptops. Recently my other Dell XPS laptop got a BIOS update. It is running Windows 10 dual boot with Ubuntu 18.04 LTS - I am not going to upgrade ubuntu due to this issue.