Comment 13 for bug 1626436

Same here, downgrading to 4.4 from Xenial improved the situation (boot still feels a little slower than Xenial though, maybe because of the NetworkManager bug). I use a 7 years old desktop computer based on a Gigabyte motherboard and AMD Phenom II X4 955 CPU, So it's not Thinkpad-related.

(From GRUB to lightdm used to be 7 seconds in 16.04, but using Kernel 4.8 and the new network manager it feels more like 20 secs. Also, the Unity 7+Chromium launch used to take just very few seconds, now it's a noticable delay with only the wallpaper showing, no matter which kernel I use, so that's unrelated. Anyway, booting my computer has just become a lot less fun even though I removed Apache 2 and Tomcat. :( )