Bug 188321

Summary: i915: black screen after disconnecting HDMI monitor
Product: Drivers Reporter: kernel
Component: Video(DRI - non Intel)Assignee: drivers_video-dri
Status: RESOLVED INVALID    
Severity: normal    
Priority: P1    
Hardware: x86-64   
OS: Linux   
Kernel Version: 4.x Subsystem:
Regression: No Bisected commit-id:
Attachments: dmesg with drm.debug=14

Description kernel 2016-11-21 22:59:23 UTC
Created attachment 245481 [details]
dmesg with drm.debug=14

Since new install of my Linux System and using a 4.4+ Kernel (before 3.19) I'm getting kernel exceptions every time I disconnect my via HDMI connected Monitor.

Steps:
- booting to desktop without problems
- disconnect HDMI
- eDP is showing desktop for ~2 seconds
- eDP turns black, no keyboard inputs, the rest keeps running

No difference if HDMI connected while/after boot, I tried different 4.4+ Kernel Versions from Ubuntu to Mainline, every time nearly the same output.

[   90.275535] [drm:ironlake_crtc_enable [i915]] *ERROR* mode set failed: pipe A stuck
[   90.329696] ------------[ cut here ]------------
[   90.329789] WARNING: CPU: 3 PID: 1834 at /home/kernel/COD/linux/drivers/gpu/drm/i915/intel_display.c:14221 intel_atomic_commit_tail+0xf93/0xfc0 [i915]

see attached dmesg for the full exception trace.
Comment 1 Jani Nikula 2016-12-01 12:17:15 UTC
Please file drm/i915 bugs at
https://bugs.freedesktop.org/enter_bug.cgi?product=DRI&component=DRM/Intel