Dell XPS 13 9365 2-in-1 won't resume after suspend ( ubuntu 16.04 )

Question

I recently got a new Dell XPS 13 9365 2-in-1 laptop, I've installed Ubuntu 16.04.1 on it ( kernel 4.8.0-34-generic ) and I noticed that every time I close my laptop lid ( which sends the computer in Suspend mode ) I can not return from Suspend. If I manually go into Suspend mode ( using the GUI not by closing the lid ) I also can't return from that.

things I've already tried:

• I tried: sudo apt-get update sudo apt-get upgrade which for what it's worth mentioned this before finishing ( not sure if it's an issue or not ) W: Possible missing firmware /lib/firmware/i915/kbl_guc_ver9_14.bin for module i915 W: Possible missing firmware /lib/firmware/i915/bxt_guc_ver8_7.bin for module i915

• some have suggested it could be a brightness issue, which can be corrected in BIOS, but if that were the case I would assume that I would be able to ssh into my machine from another computer, and I cannot ssh into it after going into Suspend ( which makes me think it's not simply a brightness issue, but is in fact stuck in Suspend mode )

• I tried this script https://ubuntuforums.org/showthread.php?t=1978290 which did not work. It says it's an automated way of doing what you could do manually with Ctrl+Alt+F1 and Ctrl+Alt+F7 but those shortcut keys also do nothing for me after trying to return from Suspend ( they do of course work normally, when I'm not in Suspend ).

• I attempted to try this fix https://ubuntuforums.org/showthread.php?t=1866075 which references answer #7 here https://ubuntuforums.org/showthread.php?t=1444822 but I was confused as to exactly how I should substitute the "XXXX:XX:XX.X" in the example, but seeing as how it seemed like a variation on the script I tried before ( also in /etc/pm/sleep.d/ ) I moved on to trying the next thing

• I then tried this one Blank screen after resume - Dell M5510 Ubuntu 16.04 but this also didn't solve my probelm

• I also installed laptop-mode-tools as someone suggested, but wasn't sure how to use this to address the issue

I should also mention that I had a wireless card issue when I first installed Ubuntu, and that was fixed this way Wireless not working on Dell XPS 13 9365 Ubuntu 16.04 I mention this because it involved updating my kernel ( which again is 4.8.0-34-generic ) and in one post about Suspend issues they mentioned that it could be caused by the wireless card changing it's status XPS 13 9343 Failure to resume from suspend

i hope this can be fixed, thanks in advance!

Answer 1

finally! a solution! @DenisPitza posted in the comments to my question a solution that worked for me! his original post is here i'm reposting his answer below for convenience:

to make permanent the solution proposed by @user8211580 you should edit your groub config file with:

sudo vi /etc/default/grub

edit the line containing

GRUB_CMDLINE_LINUX_DEFAULT

and make sure to include "mem_sleep_default=s2idle" like:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash mem_sleep_default=s2idle"

and then reload grub:

sudo update-grub

Then make sure that you do not have any action linked to you power button. Next time you suspend your computer, you'll be able to wake it up by pressing your power button for 6 seconds.

Answer 2

Since you are running an LTS release you have a couple options to try and fix your issue. The supported one is installing one of the HWE (hardware enablement) kernels that basically back ports newer hardware support.

Use apt search hwe to see your options, there are slightly optimized versions depending on your current kernel. Check that with uname -a.

Another option is to install a mainline kernel to see if one of the newer kernels works better. This can be troublesome as the mainline kernels don't have distribution specific optimizations which includes some hardware fixes or power management tweaks.

There is an answer around here somewhere on the easiest way to install the latest mainline kernels.

Answer 3

Resume works for me in 4.10 (you can install one from kernel-ppa -- there's 4.10-rc6 available as of today) - it works in the sense that you can resume from sleep but only by holding the power button for a long time (5s+). Everything seems to work after resume.

I'm running stock 16.04 with 4.10 installed from kernel-ppa and firmware for wifi and i915 (kbl_*) manually installed.

Answer 4

I've been able to wake my 9365 by pressing and holding the power button until the screen turns back on. I've noticed that I lose the touchpad when it wakes, and rmmod/modprobing psmouse doesn't bring it back. The touchscreen is still responsive, however. I'll let you know if I find a workaround more acceptable than doing a full shutdown when I want to put the laptop away for a while.