Troubleshooting
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5. Troubleshooting DKMS ModulesIn case of DKMS Module Building Failure 
 See the Guide on Removing DKMS Kernel Modules.And then generate again the Initramfs, here the Command to rebuild All: sudo update-initramfs -uk all Then reboot with: sudo reboot 
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5. Removing Kernel 5.8Finally, in any case to Delete the Kernel 
 First, query the Packages Database with:dpkg -l | grep linux Then to Delete the Kernel for instance use: sudo apt purge linux-image-unsigned-5.8.0-050800-generic Do the same also for the Headers and the Modules. 
 Then remove also the Modules Directory with:sudo rm -rf /lib/modules/5.8.0-050800-generic 
Congratulations, you can now Ride a New Kernel 5.8 on Xubuntu 20.04!
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