Created attachment 120720 [details]
dmesg output.

I am receiving the following message on boot:

"[   13.198262] [drm:evergreen_resume [radeon]] *ERROR* evergreen startup
failed on resume"

uname -a
Linux rafael 4.2.0-0.bpo.1-amd64 #1 SMP Debian 4.2.6-3~bpo8+2 (2015-12-14)
x86_64 GNU/Linux

lspci

In attachment: dmesg's output.

>From dmidecode:

Vendor: Hewlett-Packard
    Version: F.48
    Release Date: 11/09/2011
    ROM Size: 2048 kB
    ...
    BIOS Revision: 15.48
    Firmware Revision: 60.80


Worth mentioning that the behaviour of the fans and the temperatures change a
lot after suspension/hibernation.