As stated in comments #8 and #12, this is not a bug in light-locker.
** Changed in: light-locker (Ubuntu)
Status: Confirmed => Opinion
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https://bugs.launchpad.net/bugs/1287171
One thing I've found that bypasses this and works is using X11 Forwarding over
SSH (now using Ubuntu MATE though it should work for any flavor, regardless of
DE).
Using that allows me to open my apps remotely, without having to worry about
the desktop session and whether I can interact with it
This is not specific to x11vnc. I'm experiencing this when using Xvnc
too (i.e. starting a new X session on :1 or some other display). In my
case 'Xvnc' is provided by the 'tigervncserver' package.
The restarting+reattaching trick won't work in this case. Is there any
workaround for Xvnc? Do all
Here's a picture of what happens.
UltraVNC Viewer on Windows host on left, connected to guest VM of Ubuntu 16.04.1
Actual Ubuntu guest VM on left running in VirtualBox
At this point, I'm showing you that the VNC Viewer is static, left,
while the actual OS itself has "moved on" to the Guest
Let me add a "research" bump to this - the black screen also happens if
you're trying to use the built-in Desktop Sharing functionality in
16.04.1 as well, and (at any point) you switch user accounts.
It seems to really boil down to switching user accounts and the lock
screen; it's not just an
This bug affects me, too.
Easy workaround if mouse input still works:
- Choose to switch the user (will open up another screen)
root@mymachine:~# ps axu | grep X
root 3073 2.1 2.2 229824 89520 tty7 Ssl+ 12:25 0:17
/usr/lib/xorg/Xorg -core :0 -seat seat0 -auth
seems this has to do something with Unity and 3D acceleration.
I can confirm this bug in Ubuntu 16.04.1 LTS (64-bit).
I can log in to Ubuntu 16.04.1 running x11vnc without 3D acceleration.
How you can try this:
1) setup a virtual Ubuntu 16.04.1 in VirtualBox or VMWare (which one does not
Still happening in Ubuntu 16.04.1 LTS (64-bit).
x11vnc is broken by lightdm/lock screen. If the local user's session times out,
you can log in with x11vnc but the desktop is in a 'static' state where
clicking on anything is not possible.
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Same issue on Xubuntu 14.04.3. VNC works flawlessly until the screen is
locked, then a black screen.
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Title:
light-locker breaks x11vnc as
I found this thread trying to remote access a Lubuntu workstation and
make vino-server start at boot. unfortunatly, i could not get it yet.
http://ubuntuforums.org/showthread.php?t=2264563
My workaround secure solution would be to set an autologin at boot,
schedule a session lock 10 seconds later
Can confirm this issue.
Script above did not helped me.
All it does
sh vnc.sh
vnc.sh: 9: [: :1: unexpected operator
vnc.sh: 20: [: true: unexpected operator
Thats the script
#!/bin/bash
vncpasswdfile=/etc/x11vnc/passwd
vtpath=/var/run/lightdm/root
vtuser=:0
vtlock=:1
vtlast=$vtlock
Same problem here.
Additionally: I manage to connect with the display-update script (thanx for the
solution!),
but my connection with ssvnc crashes the lightdm(-gtk-greeter) within a few
seconds and thus X-server and the session.
Restarting lightdm refuses any vnc afterwards. Restart needed.
** Changed in: light-locker (Ubuntu)
Importance: Undecided = High
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Title:
light-locker breaks x11vnc as service
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@denixx-baykin: You can always uninstall light-locker and use
xscreensaver like in 13.10, so that's no definitive reason to stick to
an EOL release.
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If I understood, it is a x11vnc problem? Am I right?
Is light-locker behavior appears anywhere in other screenlocker?
This bug is my main reason to stay at xubuntu 13.10, which is already reached
end of support (I don't think it is a good idea to use workaround above - it is
a duct tape, I
This bug is confirmed due to switching VT to provide the locking
features. Below is a temporary solution by running a script to detect
the active VT and restart VNC server to attach to the active VT
periodically.
#!/bin/bash
#
# This script will (re)attach VNC to the active VT of
Not sure if this was exactly my problem but I always try to see if someone
already opened a bug.
I was using light locker and when I closed my laptop and opened it again... I
would log back in, the login screen went off but it didn't come back on. I am
guessing that it did log me back in
The workaround is to not use light-locker for screenlocking, as it does VT
switches.
Killing the other xserver process obviously won't help, because that's where
the (lightdm-)greeter sits that is expecting authentification.
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Is there a workaround for this? I tried ssh-ing into the machine and
killing the X server process on vt8, but it just re-spawned.
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Title:
I use ssvnc as a client and am able to connect to a password protected
x11vnc service. ssvnc offers me a black screen to enter the x11vnc login
credentials, it accepts these credentials but then *bypasses* (!) the
lock screen of the remote desktop and immediately shows me the remote
desktop!
Possibly duplicated by bug #1309418?
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Title:
light-locker breaks x11vnc as service
To manage notifications about this bug go to:
same problem here using xubuntu 14.04 and x11vnc.
The x11vnc service is started with lightdm using the greeter-setup-
script configuration directive:
[SeatDefaults]
greeter-setup-script=/usr/bin/x11vnc -shared -display :0 -auth
/var/run/lightdm/root/:0 -rfbauth /etc/x11vnc.passwd -forever -bg
Frankly I'm not sure light-locker *can* even work with a service such as
VNC, as it switches to a new VT / X11 session when locking the screen
(with lightdm).
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Light-locker + vino-server = same problem. I have only black screen with
mouse point on the lock screen via vnc-client.
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Title:
light-locker
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: light-locker (Ubuntu)
Status: New = Confirmed
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Title:
I confirm this bug
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Title:
light-locker breaks x11vnc as service
To manage notifications about this bug go to:
x11vnc log attached
** Attachment added: x11vnc.log
https://bugs.launchpad.net/ubuntu/+source/light-locker/+bug/1287171/+attachment/4005173/+files/x11vnc.log
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I've subscribed the core developers to this bug.
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Title:
light-locker breaks x11vnc as service
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