Same issue and bug related on gitlab.xfce.org:
https://gitlab.xfce.org/xfce/xfce4-settings/-/issues/222
My laptop with Xfce 4.16 on Xubuntu 21.04.
I've rebuild xfce4-settings without the support to upower-glib and now
the bug disappear.
On xfce4-settings 4.15.3 the upower-glib is disabled by
I used Xubuntu 18.04 LTS. It was ok for a few months, then the problem
started. Recently upgraded to Xubuntu 19.10 (completely fresh install).
Still blank screen after waking up fro suspend.
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For Xubuntu 18.04 + light-locker there is bug 1759950.
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https://bugs.launchpad.net/bugs/1431149
Title:
XFCE 4.12 Black screen after wakeup from suspending by closing the
laptop lid
The report is quite old now, and some things have changed under the hood
over the years. I think it will help to start gathering information in
new report(s) without mixing different test setups, and therefore mixing
potentially different root causes.
It does not look like anyone here has tested
Sorry, my self can not open a new report about it, because the issue was so
annoying that sadly I have switched to cinnamon... so I'm not affected atm.
But just asking: are you sure this occurs on different hardware, and not only
with the amd gpu (driver)? Its just an idea as for years now
At this point we have comments about various setups (software +
hardware) with different screen lockers involved across a couple of
(X)Ubuntu releases.
I suggest to open a new report for Xubuntu 18.04. Thanks.
** Changed in: xubuntu-default-settings (Ubuntu)
Status: Confirmed => Invalid
New report should be filed against xfce4-settings/xfce4-power-manager or
light-locker if used.
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https://bugs.launchpad.net/bugs/1431149
Title:
XFCE 4.12 Black screen after wakeup from
After changing to IgnoreLid=true, are you able to set lid closing action
for battery/AC somewhere? Because this way its been disappeared from
xfce power manager. I would like to set different behaviour for those.
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My screen does lock when going to sleep, by I have gnome-screensaver
installed instead of xscreensaver. XFCE checks which screensaver you
have and calls that version prior to suspend for the lock screen. I have
this setup on my desktop and laptop, both work without issue.
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Bug is present for me in Xubuntu 18.04 (Kernel: 4.15.0-20-generic x86; Xfce
4.12.3; Graphics Card: Advanced Micro Devices [AMD/ATI] Mullins [Radeon R4/R5
Graphics]).
Black screen (so no backlight at all) after resume, but only in case the
suspend was initiated by lid closing. Replacing lightdm
I also have this problem, which has been bugging me also in the pre-
alpha releases of 18.04. It happens occasionally to me on a Thinkpad
E580, and was expecting hardware-like resume problems, or issues with
light-locker.
I noticed that connecting an external display worked for the external
I don't have light-locker installed, using GDM3 instead, and just
upgraded to Bionic, but this bug appears to have reared it's ugly head
again. The solution however of changing IgnoreLid to true in UPower.conf
clears up the problem. Hats off to piotr-wroclaw for figuring this out.
This solution
Removing light-locker and light-locker-settings works for me. Originally
even if I suspend manually from whisker menu, I get a black screen
whenever I unlock my computer. Now it works!
One notable thing is that I use gdm3 instead of lightdm, maybe that's
the reason.
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This solution works on my laptop (ubuntu 16.04, but should work on previous OS):
open as root file
/etc/UPower/UPower.conf
and change IgnoreLid=false ==> IgnoreLid=true
save changes, restart system and now it works :-)
You can remove light-locker now.
You can use bash for these:
sudo sed -i -e
Just to add: closing the laptop lid (and waking up) works fine if I've
logged out of Xfce (and am at the LightDM login screen), so it seems to
be an issue with Xfce/Xubuntu. Thanks.
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I have the same problem on a fresh install of Xubuntu 15.10.
* Suspending without closing laptop lid is fine.
* Turning off lock screen on sleep makes no difference (screen is black when
opened even without a lock screen).
* Removing light-locker makes no difference.
* Installing xscreensaver
In case it helps anyone who's a total newbie like me, install
xscreensaver. It will take over the blanking and switching off of your
screen as well as allow you to lock the machine when it times out (tick
"Lock Screen After" on the "Display Modes" tab). That seems to work for
me.
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Me too! I was Googling about screensavers and it said to try running
'xflock4' which is how I first ended up with a black screen unable to
return to the desktop. If I press the power button and hit 'suspend' I
get the same thing.
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Also I just shut my lid as a test, the display comes back but as soon as
I press any key it goes blank and I'm left hanging again.
Acer Travelmate 7750G.
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Also the action only works when both battery and AC are selected the
same action.
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https://bugs.launchpad.net/bugs/1431149
Title:
XFCE 4.12 Black screen after wakeup from suspending by
** Changed in: xubuntu-default-settings (Ubuntu)
Status: Expired = Confirmed
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Title:
XFCE 4.12 Black screen after wakeup from suspending
I reopen the bug since it still occurs from time to time. Switching to
xscreensaver will probably fix it because the locking mechanism is
completely different.
Please let me know what I can do to gather more information about this bug when
the following situation occurs:
- Laptop was in suspend
[Expired for xubuntu-default-settings (Ubuntu) because there has been no
activity for 60 days.]
** Changed in: xubuntu-default-settings (Ubuntu)
Status: Incomplete = Expired
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Can you switch to another screen locker (probably xscreensaver) and see
if the problem still occurs?
The light-locker fix for bug 1307545 may require tweaking to cover some
corner case which still triggers the black screen issue.
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I'm running XUbuntu 15.04 (final release) for a few weeks on my laptop.
I did some initial tests directly after I installed it and it worked
properly. But unfortunately after a few days the bug occured from time
to time. It's not reproducible. I'm using the laptop almost every day
and every 4-5
The mentioned PPA does not install or update xubuntu-default-settings,
so it is most likely not a bug in this package.
Please download and test Xubuntu 15.04 which ships with Xfce 4.12 by
default. We need to know if the bug is reproducible with the current
(development) release.
** Changed in:
According to an archlinux forum discussion, the bug _might_ be caused by
xfce4-settings. I'm not entirely sure, so I changed the affected package
back to xubuntu-default-settings until I know it exactly.
Here's the post of one who testet the fix:
Sorry, changed it accidentally
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Title:
XFCE 4.12 Black screen after wakeup from suspending by closing the
laptop lid
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