[Bug 104228] New: [CNL] HDMI video doesn't come back after S3 state , only with HDMI connected
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Tue Dec 12 16:34:15 UTC 2017
https://bugs.freedesktop.org/show_bug.cgi?id=104228
Bug ID: 104228
Summary: [CNL] HDMI video doesn't come back after S3 state ,
only with HDMI connected
Product: DRI
Version: DRI git
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
Severity: major
Priority: medium
Component: DRM/Intel
Assignee: intel-gfx-bugs at lists.freedesktop.org
Reporter: elio.martinez.monroy at intel.com
QA Contact: intel-gfx-bugs at lists.freedesktop.org
CC: intel-gfx-bugs at lists.freedesktop.org
Created attachment 136118
--> https://bugs.freedesktop.org/attachment.cgi?id=136118&action=edit
dmesg log
System Environment
=======
Ubuntu 17.04
4.15.0-rc2-drm-intel-qa-ww49-commit-bdf9b36+
Default graphic configuration from Ubuntu 17.04 without any kind of firmware
(No DMC GuC or HuC)
Regression?
=======
No
Bug detailed description
=======
After booting up without any background process, the system is not able to
recover image on Acer HDMI monitor after a S3 instruction "#echo mem >
/sys/power/state"
Reproduce Steps
==============
login in to your linux account
open terminal and execute as sudo "echo mem > /sys/power/state"
Expected Result
=============
The system should recover getting back image on HDMI monitor
Actual Result
===========
No screen available but system is up through ssh
Analysis & Root Cause
===================
This problem is not present with eDP
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