Lenovo ThinkPad 11e Randomly Freezes on Ubuntu 16.04

Try installing newer kernels. In some cases, it fixes the problem of freezing that caused by bad high precision timer code. This is binary for Linux 4.5.2:

http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.5.2-wily/

Download appropriate 3 .deb binary packages, install them, and reboot to the new kernel. I hope this will fix your problm. By the way, Ubuntu 16.04 is alraedy out with a new kernel, so do a clean install (not an upgrade) and see if it fixes your problem.

See https://bugzilla.kernel.org/show_bug.cgi?id=109051

The following eliminated the problem for me.

Edit /etc/default/grub. Change the line

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

to

GRUB_CMDLINE_LINUX_DEFAULT="intel_idle.max_cstate=1 quiet splash"

then do

sudo update-grub

and reboot.

There isn't enough information to diagnose this so you should file a bug. I'm assuming when you mention 'freeze' the computer needs to be completely power cycled to use it again. With that it is most likely a kernel issue. The following link explains how to file a bug against the Ubuntu kernel: https://wiki.ubuntu.com/Kernel/Bugs

Another approach is to use linux-crashdump to try and capture the failure when it happens. Instructions are here: https://wiki.ubuntu.com/Kernel/CrashdumpRecipe

Finally you could try installing the latest mainline kernel to see if this fixes the issue. This would be useful information to report in the bug as well: http://kernel.ubuntu.com/~kernel-ppa/mainline/daily/current/