[Bug 97301] [BXT-P] External displays are not recognized after resuming from S3

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97301

--- Comment #1 from Humberto Israel Perez Rodriguez <humberto.i.perez.rodriguez at intel.com> ---
This issue also happen in Fedora, please see the following detailed information

1-Before to send the DUT to S3 HDMi are recognized by xrandr, only HDMI is
recognized as DP (but this is other issue)
2-if i send the DUT to S3 with HDMI after come back the first time the external
display does not come back
3-if i send the DUT for second time to S3 after come back the external display
is seen but in xrandr does not appears

in step 3 xrandr sporadically recognized the external display

Commands for S3
=============================================
- # rtcwake -s 30 -m mem
- # echo mem > /sys/power/state 

Software configuration
============================================
Linux OS : Fedora 64Bit
Kernel version                  : 4.8.4-200.fc24.x86_64
Bios revision                   : 144.10
Bios release date               : 06/27/2016
KSC revision                    : 1.15


Hardware information
============================================
Platform                        : BXT-P
Motherboard model               : BroxtonP
Motherboard type                : NOTEBOOK Hand Held
Motherboard manufacturer        : IntelCorp.
CPU family                      : Other
CPU information                 : 06/5c
GPU Card                        : Intel Corporation Atom/Celeron/Pentium
Processor N4200/N3350/E3900 Series Integrated Graphics Controller (rev 0a)
(prog-if 00 [VGA controller])
Memory ram                      : 8 GB
Maximum memory ram allowed      : 16 GB
CPU thread                      : 4
CPU core                        : 4
Socket                          : Other


attachments
==============================================
dmesg.log

Note : This issue does not occurs with DP

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