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--- docs:tips_n_tricks:ubuntu:index.html [03.09.2012 13:20 CEST] – peter
+++ docs:tips_n_tricks:ubuntu:index.html [19.09.2018 12:54 CEST] (current) – [Get rid of 'Gtk-Message: Failed to load module "overlay-scrollbar"'] peter
@@ Line 1: / Line 1: @@
 ====== Ubuntu ======
+{{indexmenu>.#1}}
+{{NEWPAGE>.}}
+===== Pages tagged Ubuntu =====
+{{topic>Ubuntu}}
 ===== Make bootable USB stick =====
@@ Line 9: / Line 13: @@
 After this, you can run your favourite //*fdisk// and add partions to use the remaining space on the stick for other purposes.
+{{tag>USB}}
+{{entry>USB}}
 ===== Make resume work =====
@@ Line 24: / Line 30: @@
   * http://chriseiffel.com/everything-linux/step-by-step-how-to-get-hibernate-working-for-linux-ubuntu-11-04-mint-11/
 for more details.
+Installing cryptsetup (by dependencies, not using it) seemed to break resume on one laptop (it freezed while reuming after heaving read image "successfully").
+I didn't find any solution but removing cryptsetup.
+===== Warnings after installing cryptsetup =====
+Running update-initrd throwed some warnings regarding
+  cryptsetup: WARNING: found more than one resume device candidate:
+                       vg_sys1-lv_SWAP0
+ec481-cda1-4548-b7b4-327de62ed4fb
+While ''vg_sys1-lv_SWAP0'' was the right resume device in terms of //lvm//, the UUID //805ec481-cda1-4548-b7b4-327de62ed4fb// was not known to the system (any more). Some googling((  http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=532579)) showed, that ''/etc/initramfs-tools/conf.d/resume'' might be involved - in my case, it contained the UUID mentioned by update-initrd. I got rid of the warning above by editing this, unfortunately this didn' help in the resume problem mentioned above.
+===== Enable menu entry "Hibernate" =====
+This is just to enable the item, this does not resolve any problems that may arise, when you select it!
+==== Ubuntu 12.10,13.04 ====
+Create the file  ''/etc/polkit-1/localauthority/50-local.d/com.ubuntu.enable-hibernate.
+pkla'' with this content:
+  [Re-enable hibernate by default]
+  Identity=unix-user:*
+  Action=org.freedesktop.upower.hibernate
+  ResultActive=yes
+and reboot ;-)
+==== Ubuntu 13.10 ====
+Create the file ''/var/lib/polkit-1/localauthority/50-local.d/com.ubuntu.enable-hibernate.pkla'' with the following lines
+  [Re-enable hibernate by default in upower]
+  Identity=unix-user:*
+  Action=org.freedesktop.upower.hibernate
+  ResultActive=yes
+  [Re-enable hibernate by default in logind]
+  Identity=unix-user:*
+  Action=org.freedesktop.login1.hibernate
+  ResultActive=yes
+and rebbot ;-)
+===== Inhibit Hibernate when running XEN =====
+Create the file ''/etc/pm/sleep.d/00_xen'' containing the following lines:
+  #!/bin/sh
+  mode="$1"
+  xendir=/proc/xen
+  case "$mode" in
+    "hibernate") if [ -d "$xendir" ]
+                 then
+                    echo "$0: Obviously running XEN, as $xendir exists"
+                    echo "$0: Inhibiting $mode"
+                    exit 1
+                 fi
+                 ;;
+  esac
+===== Recover from NetworkManager problems =====
+To restart the NetworkManager, just enter
+  ~ # restart network-manager
+One problem I solved this way were the network menus claiming that wifi was disabled while it could easily used after being configured by //ifconfig// and //iwconfig//.
+ss=====  Enable Headset for high quality audio =====
+//Applied on Ubuntu 14.04//
+  * Make sure, bluetooth hardware is available
+  * Install all kind of bluetooth and bluez stuff from aptitude
+  * run as root ''pactl load-module module-bluetooth-discover''
+  * Edit ''/etc/bluetooth/audio.conf'':\\
+      ''[General]''\\
+      :\\
+      :\\
+      ''Disable = socket''\\
+      :\\
+      :\\
+      ''Autoconnect=true''\\
+      :\\
+      :\\
+{{tag>audio bluetooth}}
+{{entry>audio}}
+{{entry>bluetooth}}
+===== Get rid of 'Gtk-Message: Failed to load module "overlay-scrollbar"' =====
+Searching the we led me to [[https://askubuntu.com/questions/538993/gtk-message-failed-to-load-module-overlay-scrollbar|Ask Ubuntu]]. In my case, the setting was the environment variable //GTK2_MODULES//:
+<code bash>
+~ $ echo $GTK2_MODULES
+overlay-scrollbar
+~ $
+</code>
+Following the basic idea, I followed the answer linked above and found
+<code bash>
+~ $ cat /etc/X11/Xsession.d/81overlay-scrollbar
+# This file is sourced by Xsession(5), not executed.
+if [ -z "$GTK2_MODULES" ] ; then
+        GTK2_MODULES="overlay-scrollbar"
+else
+        GTK2_MODULES="$GTK2_MODULES:overlay-scrollbar"
+fi
+export GTK2_MODULES
+~ $ dpkg --search /etc/X11/Xsession.d/81overlay-scrollbar
+overlay-scrollbar: /etc/X11/Xsession.d/81overlay-scrollbar
+~ $ dpkg --listfiles overlay-scrollbar
+/.
+/etc
+/etc/X11
+/etc/X11/Xsession.d
+/etc/X11/Xsession.d/81overlay-scrollbar
+/usr
+/usr/share
+/usr/share/glib-2.0
+/usr/share/glib-2.0/schemas
+/usr/share/glib-2.0/schemas/com.canonical.desktop.interface.gschema.xml
+/usr/share/glib-2.0/schemas/com.canonical.desktop.interface.enums.xml
+/usr/share/doc
+/usr/share/doc/overlay-scrollbar
+/usr/share/doc/overlay-scrollbar/changelog.Debian.gz
+/usr/share/doc/overlay-scrollbar/copyright
+~ $ dpkg --list 'overlay-scrollbar*'
+Desired=Unknown/Install/Remove/Purge/Hold
+| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
+|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
+||/ Name                       Version            Architecture       Description
++++-==========================-==================-==================-=========================================================
+ii  overlay-scrollbar          0.2.17.1+16.04.201 all                Scrollbar overlay - configuration
+rc  overlay-scrollbar-gtk3:amd 0.2.16+r359+15.04. amd64              GTK 3 module for overlay scrollbars
+~ $
+</code>
+continue as //root//:
+<code>
+~ # dpkg --purge overlay-scrollbar-gtk3
+(Reading database ... XYZYXZ files and directories currently installed.)
+Removing overlay-scrollbar-gtk3:amd64 (0.2.16+r359+15.04.20150319-0ubuntu1) ...
+Purging configuration files for overlay-scrollbar-gtk3:amd64 (0.2.16+r359+15.04.20150319-0ubuntu1) ...
+~ # apt-mark auto overlay-scrollbar
+overlay-scrollbar set to automatically installed.
+~  # aptitude install
+The following packages will be REMOVED:
+  overlay-scrollbar{u}
+packages upgraded, 0 newly installed, 1 to remove and 400 not upgraded.
+Need to get 0 B of archives. After unpacking 23.6 kB will be freed.
+Do you want to continue? [Y/n/?] y
+(Reading database ... 606065 files and directories currently installed.)
+Removing overlay-scrollbar (0.2.17.1+16.04.20151117-0ubuntu1.16.04.1) ...
+Processing triggers for libglib2.0-0:amd64 (2.48.2-0ubuntu1) ...
+~ # dpkg --purge overlay-scrollbar
+(Reading database ... XYZXYZ files and directories currently installed.)
+Removing overlay-scrollbar (0.2.17.1+16.04.20151117-0ubuntu1.16.04.1) ...
+Purging configuration files for overlay-scrollbar (0.2.17.1+16.04.20151117-0ubuntu1.16.04.1) ...
+~ #
+</code>
+Well, the last steps could have been simplified by just ''dpkg --purge overlay-scrollbar''((''apt-get purge overlay-scrollbar'' would do it as well)) - but I wanted to have some fun 8-)
+{{tag>GTK GTK2}}
+{{entry>GTK}}
+{{entry>GTK2}}
+======  ======
+{{tag>Linux Ubuntu}}
+{{entry>Linux}}
+{{entry>Ubuntu}}