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On 2013-03-03T19:50:11+00:00 ticket wrote:

With cairo-dock running, if I start the xfce "Appearance" utility and
choose a different "Style", the entire cairo dock becomes invisible and
cannot be made visible again except by re-starting the dock.

Same thing happens if I toggle the "Show shadows under dock windows"
option in "Window Manager Tweaks" from off to on.

This does not happen if using the MetaCity window manager.

Details:
cairo-dock v3.0.0 (from Debian Testing)
Debian Testing (Wheezy)
XFCE 4.8
nVidia graphics
Compositing option of xfwm switched on.

Reply at: https://bugs.launchpad.net/cairo-dock-
core/+bug/1030359/comments/8

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On 2014-05-25T02:08:20+00:00 Brian wrote:

Several people have reported this issue on the cairo-dock forums. We
have determined that changing anything to do with the compositor (even
turn it off and back on by unchecking it in the settings and the check
it again) will cause the dock to go invisible.

We know the dock is still there and is still working because we can
right click on it and quit or open the configuration window.

The issue happens with Xubuntu (I noticed it in 13.04, 13.10 and now
14.04) and Debian Wheezy. The cairo-dock devs reported the issue may be
that the "gtk_widget_set_opacity (pWindow, 0)" and
"gtk_widget_set_opacity (pWindow, 1)" calls don't seem to be managed. We
are attempting further debugging so if there is anything we can do to
find a solution we will gladly help.

On my Xubuntu system the xfwm4 version is:

	This is xfwm4 version 4.11.1 (revision 2b800f4) for Xfce 4.10
	Released under the terms of the GNU General Public License.
	Compiled against GTK+-2.24.23, using GTK+-2.24.23.

	Build configuration and supported features:
	- Startup notification support:                 Yes
	- XSync support:                                Yes
	- Render support:                               Yes
	- Xrandr support:                               Yes
	- Embedded compositor:                          Yes
	- KDE systray proxy (deprecated):               No

I don't have my Debian system handy to get the info.

Reply at: https://bugs.launchpad.net/cairo-dock-
core/+bug/1030359/comments/12

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On 2014-05-26T01:35:55+00:00 Brian wrote:

cairo-dock version for both systems 3.3.2 (latest stable version)

Xubuntu system:
VGA compatible controller: NVIDIA Corporation NV44 [Quadro NVS 285] (rev a1)

Debian System
VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07)

xfwm4 version on Debian Wheezy system

	This is xfwm4 version 4.8.3 (revision 360ccf2) for Xfce 4.8
	Released under the terms of the GNU General Public License.
	Compiled against GTK+-2.24.10, using GTK+-2.24.10.

	Build configuration and supported features:
	- Startup notification support:                 Yes
	- XSync support:                                Yes
	- Render support:                               Yes
	- Xrandr support:                               Yes
	- Embedded compositor:                          Yes
	- KDE systray proxy (deprecated):               No

Please let me know if there is any further information you require.

Reply at: https://bugs.launchpad.net/cairo-dock-
core/+bug/1030359/comments/13

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On 2014-05-26T01:38:08+00:00 Brian wrote:

Here is a note from the cairo-dock devs:

We also have this bug with the old Metacity because it didn't handle the
_NET_WM_OPACITY attribute correctly.

Reply at: https://bugs.launchpad.net/cairo-dock-
core/+bug/1030359/comments/14


** Changed in: xfwm4
       Status: Unknown => Confirmed

** Changed in: xfwm4
   Importance: Unknown => Medium

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https://bugs.launchpad.net/bugs/1030359

Title:
  Cairo Dock disappear when changing gtk theme

Status in Cairo-Dock : Core:
  Invalid
Status in Xfce4 window manager:
  Confirmed
Status in “xfwm4” package in Ubuntu:
  Confirmed

Bug description:
  When I change the gtk theme on Appearance Cairo-dock disappears, in
  other words is no longer visible, but is still running and if I put
  the cursor where is supposed to be it still works (lanuching apps,
  closing session, rigth click and configure etc).

  Information
  Distribution: Xubuntu 12.04
  DE: Xfce 4.8
  WM. Xfwm
  Cairo-Dock 3.0.2
  Cairo Dock with OpenGL
  Intek GMA950

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