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Subject: Bug#1474: Same problem on CentOS 8 with Xfce session
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From: Rob Whalley <mail@robwhalley.co.uk>
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I had the same issue connecting to a Centos 8 server running Xfce.
Clearly the connection was still responding, as screen elements would
resize with the window but mouse and keyboard input would appear
unresponsive.Suspecting the screensaver, I had previously tried
disabling all screensaver / screen blanking / power options in Xfce I
could find, but this did not seem to help.Manually testing the
screensaver from the options worked fine.
I tried Pavel's workaround of killing the xfce4-screensaver process and
that seemed to work (thank you Pavel!).
When checking the list of running processes I did notice that both gsd-
screensaver-proxy and xfce4-screensaver were running (makes sense as
Centos 8 comes with Gnome 3 installed by default, although it does not
work with X2Go, hence why I installed Xfce in the first place!). While
killing the xfce4-screensaver process does work, I believe the solution
below will work permanently, at the cost of seeing no screensaver at
all:
1. Disable the gnome screensaver:gsettings get
org.gnome.desktop.screensaver idle-activation-enabled
2. Kill the gsd-screensaver-proxy process - normally it will
automatically spawn a new process if you kill it, if it does not re-
spawn then the change above has worked.
It is to be noted that even if you have the Xfce screensaver activated,
power options switched on, etc. the screensaver will not appear at all
once the above has been done, at least in the simple testing I did.
I suspect it relates to X2go not supporting Mutter, and gsd-
screensaver-proxy trying to start it up, but it would need a developer
to comment really.
Thanks and kind regards,Rob

On Wed, 3 Jun 2020 07:48:38 +0000 "Pavel Duda - pavel.duda@cz.ibm.com"
<pavel.duda@cz.ibm.com> wrote:

> I have found that the issue seems to be the screen saver. Looks like

> screen saver starts up but doesn't show anything on the screen (does

> not blank the screen or starts the so user still see the workspace,
the

> keyboard and mouse is "locked" of course. My  workaround so far is to

> kill xfce-screensaver completely to resume control over session.

> 

> Pavel




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<html dir=3D"ltr"><head></head><body style=3D"text-align:left; direction:lt=
r;"><div>I had the same issue connecting to a Centos 8 server running Xfce.=
 Clearly the connection was still responding, as screen elements would resi=
ze with the window but mouse and keyboard input would appear unresponsive.<=
/div><div>Suspecting the screensaver, I had previously tried disabling all =
screensaver / screen blanking / power options in Xfce I could find, but thi=
s did not seem to help.</div><div>Manually testing the screensaver from the=
 options worked fine.</div><div><br></div><div>I tried Pavel's workaround o=
f killing the&nbsp;xfce4-screensaver process and that seemed to work (thank=
 you Pavel!).</div><div><br></div><div>When checking the list of running pr=
ocesses I did notice that both&nbsp;gsd-screensaver-proxy and xfce4-screens=
aver were running (makes sense as Centos 8 comes with Gnome 3 installed by =
default, although it does not work with X2Go, hence why I installed Xfce in=
 the first place!). While killing the xfce4-screensaver process does work, =
I believe the solution below will work permanently, at the cost of seeing n=
o screensaver at all:</div><div><br></div><div>1. Disable the gnome screens=
aver:</div><div>gsettings get org.gnome.desktop.screensaver idle-activation=
-enabled</div><div><br></div><div>2. Kill the gsd-screensaver-proxy process=
 - normally it will automatically spawn a new process if you kill it, if it=
 does not re-spawn then the change above has worked.</div><div><br></div><d=
iv>It is to be noted that even if you have the Xfce screensaver activated, =
power options switched on, etc. the screensaver will not appear at all once=
 the above has been done, at least in the simple testing I did.</div><div><=
br></div><div>I suspect it relates to X2go not supporting Mutter, and gsd-s=
creensaver-proxy trying to start it up, but it would need a developer to co=
mment really.</div><div><br></div><div>Thanks and kind regards,</div><div>R=
ob</div><div><br></div><div><br></div>On Wed, 3 Jun 2020 07:48:38 +0000 "Pa=
vel Duda - <a href=3D"mailto:pavel.duda@cz.ibm.com">pavel.duda@cz.ibm.com</=
a>" &lt;<a href=3D"mailto:pavel.duda@cz.ibm.com">pavel.duda@cz.ibm.com</a>&=
gt; wrote:<br>
&gt; I have found that the issue seems to be the screen saver. Looks like<b=
r>
&gt; screen saver starts up but doesn't show anything on the screen (does<b=
r>
&gt; not blank the screen or starts the so user still see the workspace, th=
e<br>
&gt; keyboard and mouse is "locked" of course. My&nbsp; workaround so far i=
s to<br>
&gt; kill xfce-screensaver completely to resume control over session.<br>
&gt; <br>
&gt; Pavel<br>

</body></html>

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