What happens if you try to tell bbswitch not to disable your nvidia card
at shutdown? To accomplish this, see the "Enable card on shutdown"
section in /usr/share/doc/bbswitch-dkms/README.md.gz, i.e.:
### Enable card on shutdown
Some machines do not like the card being disabled at shutdown.
Add the next initscript (`/etc/init/bbswitch.conf`) :
description "Save power by disabling nvidia on Optimus"
author "Lekensteyn <lekenst...@gmail.com>"
start on runlevel [2345]
stop on runlevel [016]
pre-start exec /sbin/modprobe bbswitch load_state=0 unload_state=1
pre-stop exec /sbin/rmmod bbswitch
** Changed in: bbswitch (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1231725
Title:
bbswitch-dkms causes forced shutdown (even in reboot)
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