[Pkg-lxde-maintainers] Bug#907721: [lxde] black screen after resume

[Christa Grüttmüller]

Package: lxde
Version: 9
Severity: normal

--- Please enter the report below this line. ---

I recently installed Debian 9.5.0 on a Dell Latitude E5400. The 
following error now occurs:

When I press the moon key or close the lid to suspend the laptop and 
later press the power key or open the lid in order to make the laptop 
resume, the screen will be black. This only happens within a LXDE 
session; at the LXDM login screen or within an IceWM session, suspend 
and resume work normally.

When the error occurs, switching to another TTY works perfectly. 
Switching back to TTY 7 (the X session) still shows a black screen. When 
X is killed and restarted, the screen is normal again, but this is not a 
solution.

The problem did not occur in an older Debian installation on the same 
laptop.

Thanks in advance for any advice. :-)

--- System information. ---
Architecture:
Kernel: Linux 4.9.0-8-amd64

Debian Release: 9.5
500 stable-updates ftp.de.debian.org
500 stable security.debian.org
500 stable ftp.de.debian.org

--- Package information. ---
Depends (Version) | Installed
==================================-+-===========
galculator | 2.1.4-1+b1
OR gnome-calculator |
gpicview | 0.2.5-2+b1
leafpad | 0.8.18.1-5
lxappearance | 0.6.3-1
lxappearance-obconf | 0.2.3-1
lxde-core | 9
lxde-icon-theme | 0.5.1-2
lxhotkey-gtk | 0.1.0-1
lxinput | 0.3.5-1
lxrandr | 0.3.1-1
lxsession-edit | 0.5.3-2
lxterminal | 0.3.0-2
xarchiver | 1:0.5.4-7


Recommends (Version) | Installed
====================================-+-===========
clipit | 1.4.2-1.2
deluge | 1.3.13+git20161130.48cedf63-3
OR transmission-gtk |
evince | 3.22.1-3+deb9u1
OR pdf-viewer |
gnome-disk-utility | 3.22.1-1
smplayer | 16.11.0~ds0-1+deb9u1
OR vlc | 3.0.3-1-0+deb9u1
OR mplayer-gui |
gnome-system-tools | 3.0.0-6
gucharmap | 1:9.0.2-1
firefox-esr | 52.9.0esr-1~deb9u1
OR firefox |
OR www-browser |
lightdm | 1.18.3-1
OR x-display-manager |
lxmusic |
OR audacious | 3.7.2-1+b1
lxpolkit | 0.5.3-2
menu-xdg | 0.5
usermode | 1.109-1+b2
wicd | 1.7.4+tb2-4
OR network-manager-gnome | 1.4.4-1
xserver-xorg | 1:7.7+19


Suggests (Version) | Installed
==================================-+-===========
gimp | 2.8.18-1+deb9u1
libreoffice | 1:5.2.7-1+deb9u4
lxlauncher |
lxtask | 0.1.8-1
pidgin |
pk-update-icon |
xfce4-power-manager |