I was working without any problem and one day the computer didn't start he said that there is a problem in the Xserver , so I connected to my computer through ssh and reinstalled xserver-xorg ,xserver-xorg-core then The computer start working but when I tap the touchpad it's don't click (it's not a configuration problem) so i copied the drivers from another linux mint and copied them into mine , and in that moment i found that i have the kernel 4.2.0-32 installed but it's not in my friend computer then I tried to uninstall it but it was impossible then I've installed the kernel 4.4.0-22 now the the touchpad is working but youtube in chrome show black video , I've changed something in the configuration about harware acceleration and now it's fine now the computer work without any problem except it's working so slowly I'm just using a browser and i'm using 60% from my CPU so I want to go back to the kernel 3.19.0-32 because it's recommended and the problem is that I can't uninstall the current kernel because it's loaded so i want to know how can i load another installed kernel to be able to delete the current one ? (Current kernel 4.4.0-22)Here i can delete the old kernel because it's not loadedHere i can't delete the new kernel because it's loaded (I want to delete it)
Remove the new kernel
linux mint;kernel;cpu usage