Suspend not working on Ubuntu 16.04 for Dell 3537

I was on Ubuntu (vanilla, with Unity) 14.04 until yesterday, and since the new LTS version came out, I decided to go for an Ubuntu GNOME 16.04 clean install.

Since I installed Ubuntu GNOME 16.04 (64-bit), I have issues with the suspend mode (I did not have this problem on 14.04) on my Dell Inspiron 3537.

When I choose to suspend the session, the screen turns black, the fans go off for a few seconds (2 or 3 seconds), then they restart going faster and faster. I have to force shutdown (hold press power button) the computer to be able to restart it.

I did some research, and found out that Ubuntu 16.04 doesn't support the AMD Radeon proprietary graphic drivers. I don't know if it's related or not, but since I have an AD Radeon HD8850M, I ran an lspci | grep VGA and here is the result:

00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller (rev 09)
03:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Venus PRO [Radeon HD 8850M / R9 M265X] (rev ff)

Also, I have the open-source drivers installed:

$ sudo apt-get install xserver-xorg-video-ati
xserver-xorg-video-ati is already the newest version (1:7.7.0-1).

If you need any other information, please let met know.

19th July update: It seems like this bug was fixed upstream using kernel version 4.4.0-28-generic. I since migrated to ArchLinux, so this still needs to be tested, but there are people saying that it works with this kernel version on the launchpad bug.

Original post: It's seems that it is a 4.4.0 kernel bug, installing 4.4.8 solves the problem. You can either wait for a 4.4.0 kernel fix, or install the 4.4.8 kernel.

I recommand waiting for 4.4.0 fix, but i installed 4.4.8 and i've seen no problem whatsoever.

Execute following commands in order to install 4.4.8 kernel:

On 32-bit

Download

cd /tmp
$ wget \
kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.8-wily/linux-headers-4.4.8-040408_4.4.8-040408.201604200335_all.deb \
kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.8-wily/linux-headers-4.4.8-040408-generic_4.4.8-040408.201604200335_i386.deb \
kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.8-wily/linux-image-4.4.8-040408-generic_4.4.8-040408.201604200335_i386.deb

Install

sudo dpkg -i linux-headers-4.4*.deb linux-image-4.4*.deb

On 64-bit

cd /tmp
wget \
kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.8-wily/linux-headers-4.4.8-040408_4.4.8-040408.201604200335_all.deb \
kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.8-wily/linux-headers-4.4.8-040408-generic_4.4.8-040408.201604200335_amd64.deb \
kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.8-wily/linux-image-4.4.8-040408-generic_4.4.8-040408.201604200335_amd64.deb

Install

sudo dpkg -i linux-headers-4.4*.deb linux-image-4.4*.deb

Source : https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1574125

I'll accept this answer in a few days if no better option shows up.