Bug#991788: xfce4-settings: black screen after suspend when laptop lid is closed and re-opened

[Andres Salomon <dilinger@queued.net>]

On Mon, 2 Aug 2021 02:08:09 +0200 (CEST) truetechie@tutanota.com wrote:
> Package: xfce4-settings
> Version: 4.16.0-1
> Severity: critical
>

> On Debian and, by extension, Ubuntu, when suspending a laptop via 
closing the lid on XFCE, the screen stays black after resuming from 
suspend. The only way to "fix" the system is to blindly type "xrandr 
--auto" into a terminal or switch to a TTY and restart X.

As an xfce user, I haven't experienced this problem. What graphics 
hardware and kernel are you seeing this with? Is this on battery or when 
plugged in? Are you using light-locker (and if so, what version)? Do you 
have upower installed (and if so, what version)? What is xfce4 
configured to do on a lid close (xfconf-query --verbose --list -c 
xfce4-power-manager)?