Created attachment 124856 [details] filtered dmesg dump I am running Arch Linux on a Razer Blade 2016 with an Intel Skylake i7–6700HQ processor and a HiDPI screen with 3200x1800 pixels. I am running Gnome under Wayland, but also tried Xorg with xf86-video-intel in UXA and SNA acceleration mode. As soon as the display is switched off, due to a suspend, a lock screen action or power saving actions, the screen starts flickering during the next wake up. Each few seconds the screen is flickering with a black background. The system is not really usable in this state and a reboot is required. I tried the linux kernel 4.6.3 and 4.7-rc5. The kernel option i915.enable_rc6=0 did also not help. I attached a filtered dmesg dump. Hope we can fix this problem! Thanks!
Some more information: The built-in display is a QHD+ Touch Display with LED backlight and with capacitive multi-touch. Here is the output of 'lspci | grep -E "VGA|3D"' 00:02.0 VGA compatible controller: Intel Corporation Skylake Integrated Graphics (rev 06) 01:00.0 3D controller: NVIDIA Corporation GM204M [GeForce GTX 970M] (rev a1)
I noticed the following new message during a shutdown: [355.554917] [drm:fw_domains_get [i915]] *ERROR* render: timed out waiting for forcewake ack request. The shutdown process hanged after the message print. I also noticed, that the amount of screen flickering occurrences reduced from each few seconds to all 20~45 seconds using the latest 4.7-rc5 mainline kernel. Hope this information healps!
Roland, please attached a non filtered dmesg (use drm.debug=14 in your boot command line). Moreover can you confirm whether or not you have latest firmware on your system ? You can download latest one at : https://01.org/linuxgraphics/intel-linux-graphics-firmwares
@Roland, Based on your description, this looks like to be a duplicate of https://bugs.freedesktop.org/show_bug.cgi?id=91393. It has been resolved and included in Linux 4.7. I also own a Blade, been following and patching this issue since Linux 4.4.
Roland, can you verified with kernel 4.7 as Evandro is pointing out?
I installed the latest firmware files and the initial 4.7.1 kernel release. Seams to be fixed! Thanks!
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