** Also affects: xfce4-settings (Ubuntu Xenial)
Importance: Undecided
Status: New
** Also affects: xfce4-settings (Ubuntu Bionic)
Importance: Undecided
Status: New
** Changed in: xfce4-settings (Ubuntu Bionic)
Status: New => Fix Released
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Matching subscriptions: Ubuntu 16.04 Bugs
https://bugs.launchpad.net/bugs/1615286
Title:
xfce - screen turns black after power off/power on
Status in Linux Mint:
New
Status in xfce4-settings:
New
Status in xfce4-settings package in Ubuntu:
Confirmed
Status in xfce4-settings source package in Xenial:
New
Status in xfce4-settings source package in Bionic:
Fix Released
Bug description:
Just installed Linux Mint 18 with XFCE (reformatted the partition, but
recopied some files from ~/.config); previously using Linux Mint 17
with KDE and no related issues. I am using mdm. I have an i3 with
Intel HD Graphics 4400, and a standard LCD monitor connected via HDMI
to my desktop PC.
If I turn my display off, due to any of the following:
- Configuring "Blank after X minutes" in Power Manager and waiting for X
minutes;
- Physically pressing the "power off" button on my monitor;
- Suspending and then resuming my session;
Then, when turning the screen back on, it does not work anymore:
everything is black, and after a few seconds the monitor reports "no
signal".
Keyboard and mouse still work, I can toggle the Num lock light on the
keyboard, for instance, and switch via Ctrl+Alt+F1 to a terminal. If I
do so and run "xrand -d :0.0 --auto" (as recommended in one forum for
an user having similar issues), I get "xrandr: Configure crtc 0
failed". If I try the exact same command before turning the screen off
(also using a Ctrl+Alt+F1 terminal, for instance), I get no message,
but because the screen is already on, nothing happens.
I tried looking at dmesg and /var/log/syslog to find relevant error
messages, but nothing seems immediate to me. I can try using other
display managers or anything else that can help debug the issue.
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