https://bugs.kde.org/show_bug.cgi?id=392286
Bug ID: 392286
Summary: Display turns on twice after going into powersaving
mode
Product: Powerdevil
Version: 5.10.5
Platform: Kubuntu Packages
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: NOR
Component: general
Assignee: plasma-b...@kde.org
Reporter: andy...@mail.ru
Target Milestone: ---
I have two displays attached to my GTX980, the main display on DisplayPort-4
and a secondary display on HDMI-0. The system is configured to turn off the
displays after 10 minuses of inactivity.
PowerDevil turns off the displays as expected. However, ~5 minutes after that
the main display on DP-4 turns on only to show that there is no signal (the
display's on-screen message) and turns off again. Another ~5 minutes later
this happens again. After that the display stays off as it should be. The other
display on HDMI-0 is actually a TV and it shows a blank screen all the time
with no activity while DP-4 wakes up.
This only happens when the display turns off for power saving. It does not
happen if I issue `xset dpms force off` from the command line (the displays
turn off and don't wake up). This is 100% reproducible and I'm sure it's not
due to some activity (e.g. an event from the mouse) because when the display
wakes up it does not show desktop/lock screen.
I would like the display to not wake up like that.
Kubuntu 17.10, x86_64, Nvidia driver 390.42, GTX980, DP-4 display is NEC
EA275UHD.
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