On my Dell Alienware 17R3 with Samsung Pro 960 NVMe SSD I had a problem suspending/resuming lockup fixed by editing /etc/default/grub
and adding the parameter acpiphp.disable=1
to the line containing:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
Afterwards it looks like this:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpiphp.disable=1"
Save the file. Next update /boot/grub.cfg
and generate a new initrd.img
with the command:
sudo update-grub
Finally reboot and test.
I don't have the PM961, but rather the 960 Pro so haven't experienced your issue. If none of the other answers or comments help one last thing you could try is:
nvme_core.default_ps_max_latency_us=5500
parameter in /etc/default/grub
LINUX kernel argument list. I just found this in Arch Linux. There are other steps you may wish to investigate in the link.
uname -a
to determine)? You may want to move to a different kernel. That said, since the issue is on shutdown, I wouldn't be too concerned (that's just me).4.13.0-36-generic #40~16.04.1-Ubuntu
.