https://bugzilla.xfce.org/show_bug.cgi?id=15446
Bug ID: 15446
Summary: Screens won't turn on after waking up the system from
suspension
Classification: Xfce Core
Product: Xfce4-session
Version: Unspecified
Hardware: PC (x86_64)
OS: Linux
Status: NEW
Severity: normal
Priority: Medium
Component: General
Assignee: xfce-bugs@xfce.org
Reporter: leozinho29...@hotmail.com
Target Milestone: Xfce 4.14
When I suspend the computer, on wake up the screens do not turn on. To make the
screens work again, I have to change to the TTY1 and then to the graphical
session (which is the TTY7 on my system) then the light-locker appears and
redirects me to the LightDM login screen.
I suspect that something inside Xfce (my guess is Xfce4-session) is turning off
the screens just before the suspension and then the Xorg session from LightDM
is unable to find a valid screen. It's noticeable as it's possible to access a
TTY, set the DISPLAY variable and use xrandr to shows the screen status: no
resolution is set, as if something on Xfce unset the displays.
Using GNOME with LightDM or GDM, this problem does not happen.
Computer model: Lenovo Ideapad 310-14ISK
OS: Xubuntu 19.04 using Xubuntu-dev PPA
Xfce version: 4.14pre1
CPU: Intel Core i3-6100U
GPU: Intel HD Graphics 520
RAM: 8 GB
Monitor connections affected: eDP and internal DP (external VGA)
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