Bug 363104

Summary:	Plugin HDMI freezes notebook completely - only hard reset possible
Product:	[Plasma] KScreen	Reporter:	Robby Engelmann <robby.engelmann>
Component:	common	Assignee:	Sebastian Kügler <sebas>
Status:	RESOLVED NOT A BUG
Severity:	grave	CC:	robby.engelmann
Priority:	NOR
Version First Reported In:	5.6.3
Target Milestone:	---
Platform:	openSUSE
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Robby Engelmann 2016-05-15 16:40:20 UTC

I bought a Tuxedo Infinity Book v2 with Intel Skylake i7. All expect for HDMI is working fine...

Reproducible: Always

Steps to Reproduce:
1. plugin HDMI to a TV set
2. plugin HDMI to the notebook with running KDE
3. sometimes it is necessary to move a windows over to the second screen to trigger the bug, sometimes only plugin is enough 

Actual Results:  
system freezes completely. I cannot switch to another virtual console. Only by pressing the power button for a few seconds shutdown notebook.

Expected Results:  
working setup with HDMI plugged in

some info from journalctl:

May 15 18:12:39 linux-vmcs org.kde.KScreen[2317]: kscreen.xrandr11: This backend is only for XRandR 1.1, your version is:  1 . 4
May 15 18:12:39 linux-vmcs org.kde.KScreen[2317]: kscreen: Skipping "XRandR 1.1" backend
May 15 18:12:39 linux-vmcs org.kde.KScreen[2317]: kscreen.xrandr: Connected output 67 to CRTC 63
May 15 18:12:39 linux-vmcs org.kde.KScreen[2317]: kscreen.xcb.helper: Detected XRandR 1.4
May 15 18:12:39 linux-vmcs org.kde.KScreen[2317]: kscreen.xcb.helper: Event Base:  89
May 15 18:12:39 linux-vmcs org.kde.KScreen[2317]: kscreen.xcb.helper: Event Error:  147
May 15 18:12:39 linux-vmcs org.kde.KScreen[2317]: kscreen: Loading "XRandR" backend


May 15 18:12:40 linux-vmcs org.kde.KScreen[2317]: kscreen.xrandr: XRandR::setConfig
May 15 18:12:40 linux-vmcs org.kde.KScreen[2317]: kscreen.xrandr: Requested screen size is QSize(1920, 1080)
May 15 18:12:40 linux-vmcs org.kde.KScreen[2317]: kscreen.xrandr: Needed CRTCs:  1
May 15 18:12:40 linux-vmcs org.kde.KScreen[2317]: kscreen.xrandr: Actions to perform:
May 15 18:12:40 linux-vmcs org.kde.KScreen[2317]: kscreen.xrandr:         Primary Output: true
May 15 18:12:40 linux-vmcs org.kde.KScreen[2317]: kscreen.xrandr:                 Old: 0
May 15 18:12:40 linux-vmcs org.kde.KScreen[2317]: kscreen.xrandr:                 New: 67
May 15 18:12:40 linux-vmcs org.kde.KScreen[2317]: kscreen.xrandr:         Change Screen Size: false
May 15 18:12:40 linux-vmcs org.kde.KScreen[2317]: kscreen.xrandr:         Disable outputs: false
May 15 18:12:40 linux-vmcs org.kde.KScreen[2317]: kscreen.xrandr:         Change outputs: false
May 15 18:12:40 linux-vmcs org.kde.KScreen[2317]: kscreen.xrandr:         Enable outputs: false
May 15 18:12:40 linux-vmcs org.kde.KScreen[2317]: kscreen.xrandr: RRSetOutputPrimary
May 15 18:12:40 linux-vmcs org.kde.KScreen[2317]: kscreen.xrandr:         New primary: 67
May 15 18:12:40 linux-vmcs org.kde.KScreen[2317]: kscreen.xrandr: XRandR::setConfig done!
May 15 18:12:40 linux-vmcs org.kde.KScreen[2317]: kscreen.xcb.helper: RRotify_OutputChange
May 15 18:12:40 linux-vmcs org.kde.KScreen[2317]: kscreen.xcb.helper:         Output:  67
May 15 18:12:40 linux-vmcs org.kde.KScreen[2317]: kscreen.xcb.helper:         CRTC:  63
May 15 18:12:40 linux-vmcs org.kde.KScreen[2317]: kscreen.xcb.helper:         Mode:  73
May 15 18:12:40 linux-vmcs org.kde.KScreen[2317]: kscreen.xcb.helper:         Rotation:  "Rotate_0"
May 15 18:12:40 linux-vmcs org.kde.KScreen[2317]: kscreen.xcb.helper:         Connection:  "Connected"
May 15 18:12:40 linux-vmcs org.kde.KScreen[2317]: kscreen.xcb.helper:         Subpixel Order:  0
May 15 18:12:40 linux-vmcs org.kde.KScreen[2317]: kscreen.xcb.helper: RRScreenChangeNotify
May 15 18:12:40 linux-vmcs org.kde.KScreen[2317]: kscreen.xcb.helper:         Window: 41943044
May 15 18:12:40 linux-vmcs org.kde.KScreen[2317]: kscreen.xcb.helper:         Root: 245
May 15 18:12:40 linux-vmcs org.kde.KScreen[2317]: kscreen.xcb.helper:         Rotation:  "Rotate_0"
May 15 18:12:40 linux-vmcs org.kde.KScreen[2317]: kscreen.xcb.helper:         Size ID: 0
May 15 18:12:40 linux-vmcs org.kde.KScreen[2317]: kscreen.xcb.helper:         Size:  1920 1080
May 15 18:12:40 linux-vmcs org.kde.KScreen[2317]: kscreen.xcb.helper:         SizeMM:  508 285
May 15 18:12:40 linux-vmcs org.kde.KScreen[2317]: kscreen.xcb.helper: RRotify_OutputChange
lines 3889-3920

Comment 1 Robby Engelmann 2016-05-15 16:43:10 UTC

I also played a bit with different renderer settings:
openGL 3.1 GLX and OpenGl 2.0 GLX with smooth or accurate settings --> all results in freeze
installed Mesa and intel git snaps from Tumbleweed Pontostroy repo.

Comment 2 Robby Engelmann 2016-05-17 09:07:11 UTC

no bug in KDE. With kernel 4.6 rc7 this problem was resolved

Comment 3 Sebastian Kügler 2016-05-24 15:10:21 UTC

Good to know. Thanks for the report, anyway!