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Dell Precision 5520
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== Bumblebee for battery/power mgmt. == Bumblebee increases battery life on Linux by a lot. [https://wiki.archlinux.org/index.php/bumblebee The ArchWiki page] tells you how to install it. If you accidentally install the nvidia or just vesa (NOT mesa, which is needed) driver (and maybe nouveau too) WITH bumblebee (happened to me on Manjaro Linux in the "Hardware Configuration" part of KDE settings when I got some weird dialog asking me to install vesa to uninstall an nvidia package, I forget what, or I might have just been experimenting), you'll need to uninstall them. In these cases, Linux may not boot to a login screen and you'll need to press Ctrl+Alt+F2 to get a shell (it says tty, that just means a virtual Linux terminal). Login as the root user/enter the root password you have set. You specifically need to install the bumblebee and possibly intel-mesa (?) drivers and uninstall the others using your package manager. See the page at [https://wiki.archlinux.org/index.php/bumblebee the ArchWiki page] for more detailed/better instructions/details on how to install/uninstall bumblebee/get the nvidia/intel drivers themselves back.
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