[Bug 94822] System hangs when some video output is disabled/enabled on Skylake platform in double/triple display configuration

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94822

--- Comment #12 from Edgar Cherkasov <echerkasov at dev.rtsoft.ru> ---
(In reply to cprigent from comment #11)
> Created attachment 123571 [details]
> SKL-Y_4.6-rc6-447f243_kern.log
> 
> I reproduced a similar problem on SKL-Y with fresh kernel.
> 
> Steps:
> -------
> 1. Connect HDMI and DP screens
> 2. Boot
> 3. xrandr --output eDP1 --off
> 4. xrandr --outout eDP1 --auto
> 
> Actual result:
> ----------------
> 4. eDP stays black. Command does not respond
> 
> Info
> -----
> Could be the same as bug 89055
> 
> Not reproduced with 4.6 rc6 from https://cgit.freedesktop.org/drm-intel/
> commit 871c895c2d3192a93a701b31d2576184ab070c66
> Author: Rodrigo Vivi <rodrigo.vivi at intel.com>
> Date:   Thu May 5 16:49:48 2016 -0700
> drm-intel-nightly: 2016y-05m-05d-23h-49m-21s UTC integration manifest
> 
> Setup
> ------
> Hardware
> Platform: 
> CPU : Intel(R) Core(TM) m5-6Y57 CPU @ 1.10GHz (family: 6, model: 78 
> stepping: 3)
> MCP : SKL-Y  D1 2+2
> QDF : QJK9 
> CPU : SKL D0
> Chipset PCH: Sunrise Point LP C0       
> CRB : SKY LAKE Y LPDDR3 RVP3 CRB FAB2
> Software 
> Linux OS : Ubuntu 16.10 64 bits
> BIOS : SKLSE2R1.R00.B104.B01.1511110114
> ME FW : 11.0.0.1191
> Ksc (EC FW): 1.20
> Kernel: drm-intel-nightly 4.6.0-rc6 447f243 from
> http://cgit.freedesktop.org/drm-intel
>    commit 447f2438e5ee3e9bb7d5cbe88fc44cdff74cc165
>    Author: Daniel Vetter <daniel.vetter at ffwll.ch>
>    Date:   Sun May 8 18:21:27 2016 +0200
>    drm-intel-nightly: 2016y-05m-08d-16h-21m-00s UTC integration manifest
> drm: libdrm-2.4.67-11 ea78c17 from http://cgit.freedesktop.org/mesa/drm/
> xorg-server-1.18.0-254 44e1c97 from
> git://git.freedesktop.org/git/xorg/xserver
> mesa: mesa-11.1.2 7bcd827 from http://cgit.freedesktop.org/mesa/mesa/
> cairo: tag 1.15.2 db8a7f1 from http://cgit.freedesktop.org/cairo
> libva: libva-1.7.0-1 2339d10 from http://cgit.freedesktop.org/libva/
> vaapi-intel-driver: 1.7.0.pre1 ab8e4e3 from
> http://cgit.freedesktop.org/vaapi/intel-driver

I reproduced this on my machine with same results and errors.

Best regards,
Edgar Cherkasov

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