Thanks to Ruslan Gol, this worked for me too!
I have a lenovo thinkpad p51s with a SAMSUNG MZVLW512HMJP-000L7 512gb ssd and kubuntu 16.10. After update the kernel to 4.9.0-040900-generic, shutdown only need some seconds and not minutes like before! And no cfs-unmount timeout errors anymore...
Thanks to Ruslan Gol, this worked for me too!
I have a lenovo thinkpad p51s with a SAMSUNG MZVLW512HMJP-000L7 512gb ssd and kubuntu 16.10. generic, shutdown only need some seconds and not minutes like before! And no cfs-unmount timeout errors anymore...
After update the kernel to 4.9.0-040900-