Comment 0 for bug 1774950

I have installed Kubuntu 18.04 on 3 different machines (my friend's and my own) with no suspend problems but my HP Pavilion 11 x360 does not suspend.

It suspends fine with Ubuntu 17.10, Kubuntu 17.10, Devuan Jesse, Devuan ASCII and Windows 10 but fails with Ubuntu 18.04 and Kubuntu 18.04.

I have also tried suspend using a live USB of 18.04 on this machine and it fails in the same way, so does not appear to be caused by any additional programs that I had installed.

By installing an older kernel (4.14) on Kubuntu 18.04 the suspend function works as expected.

Running Kubuntu 18.04 with kernels 4.15, 4.16, 4.17 results in the suspend failure that freezes the machine and requires a hard reset.

Correct behaviour is -

Screen goes blank, fan goes off, power LED flashes to show machine is in suspend. Pressing power button triggers 'resume' function.

What happens -

Screen goes blank, fan stays on, power LED stays on. Machine stays in this state and does not respond to any keyboard interaction, mouse movement or power button presses.

Ctrl + Alt + f1 (or f2, f3, f4 etc) does not get any response.

The only way to use the machine is to shut down by holding down the power button.

Checking the logs suggests that the machine believes it is in suspend mode sleep [deep] when it isn't.

Having to hard reset to get any response means that the kernel logs say no more than sleep [deep]

pm-suspend also results in the same problems with kernels 4.15 and 4.16, but works fine with 4.14.

It is curious that a machine that suspends fine on an earlier 4.14 kernel no longer works with 4.15 and above, whilst 3 other machines (including one with pretty similar hardware) do not exhibit this problem.

There are only a handful of questions about it on the forums but at least 3 other people have the same problem:

https://askubuntu.com/questions/1029405/ubuntu-18-04-crashes-on-resuming-from-suspend

https://askubuntu.com/questions/1041369/after-upgrading-from-17-10-ubuntu-18-04-wont-sleep-suspend

I am attempting to round up anyone else with the same issue and point them to this bug report.

My laptop is HP Pavilion x360 11-n013na
Matalaks is Acer Aspire ES1-511
collisionTwo has XPS 9560