[Bug 95306] Random Blank(black) screens on "Carrizo"

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=95306

--- Comment #7 from Tom <tom.vycital at gmail.com> ---
APU: AMD FX-8800P (Carrizo, Volcanic Island)
GPU: AMD Radeon R7 M360 (Topaz XT, Volcanic Island)
OS: Archlinux
X: 1.18.4
DE: Gnome 3.20, happens with other (KDE, XFCE, i3) 
DM: GDM 3.20

Kernel: Various stable and rc releases 4.4 to 4.7.2
Glib2: 2.48.1
Problem: Screen blanks randomly. It usually happens with cold machine
immediately after loading amdgpu module. After resume from suspend the screen
turns on and blanks after a few seconds (always less than 1 minute). Even if
the booting is successful it will happen at any time after that. The machine
almost never runs for more than 30 minutes without blanking. Connecting VGA or
HDMI monitor causes immediate blank but starting with connected monitors or
disconnecting them doesn't. Once screen blanks there is no way how to get it
working (switching to console, playing with xrandr etc.) except for suspend
(the few seconds is not worth it). It does not seem to affect console unless X
is started. 

Kernel: 4.5rc6 (and maybe some other)
Glib2: 2.48.1, 2.49.5.11.gb82682e-1
Problem: It occurs only on cold boot, after connecting external monitor (didn't
test yet with Glib2 2.49) and a longer suspend (a few minutes).

Kernel: 4.7.1
Glib2: 2.49.5.11.gb82682e-1
Problem: Screen blanked once after 2 hours but turned back on after switching
to console and back to X. After 10 minutes it blanked for good.

Kernel: 4.7.2
Glib2: 2.49.5.11.gb82682e-1
Problem: Ran for 1h 30m without any issue. Blanked after suspending for 15
minutes and resuming.

So maybe Glib2 related problem?

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