---- VirtualBox-4.3.8/src/VBox/Installer/linux/VBox.sh~ 2014-02-25 19:09:10.000000000 +0200
-+++ VirtualBox-4.3.8/src/VBox/Installer/linux/VBox.sh 2014-03-01 14:07:14.898417429 +0200
-@@ -19,9 +19,9 @@
- test -r "${CONFIG}" &&
- . "${CONFIG}"
- test -z "${INSTALL_DIR}" &&
-- if test -f /usr/lib/virtualbox/VirtualBox &&
-- test -x /usr/lib/virtualbox/VirtualBox; then
-- INSTALL_DIR=/usr/lib/virtualbox
-+ if test -f @INSTALL_DIR@/VBoxSVC &&
-+ test -x @INSTALL_DIR@/VBoxSVC; then
-+ INSTALL_DIR=@INSTALL_DIR@
- else
- echo "Could not find VirtualBox installation. Please reinstall."
- exit 1
+--- VirtualBox-5.1.2/src/VBox/Installer/linux/VBox.sh.orig 2016-07-29 18:45:38.074668094 +0200
++++ VirtualBox-5.1.2/src/VBox/Installer/linux/VBox.sh 2016-07-29 19:23:07.702016897 +0200
+@@ -40,6 +40,23 @@
+ # test -n "${path}" || pwd
+ # done
+ # )
++
++show_message() {
++ local BINFILE=${0##*/} message
++
++ if [ "$DESKTOP" = "kde" ]; then
++ message=$(cat)
++ PATH=$(kde4-config --path exe) kdialog --sorry "$message"
++ elif [ -n "$DISPLAY" ] && [ -x /usr/bin/gxmessage ]; then
++ gxmessage --center --buttons GTK_STOCK_OK -wrap -geometry 400x150 -name $BINFILE -file -
++ elif [ -n "$DISPLAY" ] && [ -x /usr/bin/zenity ]; then
++ message=$(cat)
++ zenity --error --icon-name=virtualbox --text "$message"
++ else
++ cat >&2
++ fi
++}
++
+
+ if test -f /usr/lib/virtualbox/VirtualBox &&
+ test -x /usr/lib/virtualbox/VirtualBox; then
+@@ -47,7 +64,7 @@
+ elif test -f "${MY_DIR}/VirtualBox" && test -x "${MY_DIR}/VirtualBox"; then
+ INSTALL_DIR="${MY_DIR}"
+ else
+- echo "Could not find VirtualBox installation. Please reinstall."
++ echo "Could not find VirtualBox installation. Please reinstall." | show_message
+ exit 1
+ fi
+
+@@ -57,7 +74,7 @@
+ if [ "$1" = "shutdown" ]; then
+ SHUTDOWN="true"
+ elif ! lsmod|grep -q vboxdrv; then
+- cat << EOF
++ show_message << EOF
+ WARNING: The vboxdrv kernel module is not loaded. Either there is no module
+ available for the current kernel (`uname -r`) or it failed to
+ load. Please recompile the kernel module and install it by
+@@ -67,7 +84,7 @@
+ You will not be able to start VMs until this problem is fixed.
+ EOF
+ elif [ ! -c /dev/vboxdrv ]; then
+- cat << EOF
++ show_message << EOF
+ WARNING: The character device /dev/vboxdrv does not exist. Try
+
+ sudo /sbin/vboxconfig
+@@ -79,7 +96,7 @@
+ fi
+
+ if [ -f /etc/vbox/module_not_compiled ]; then
+- cat << EOF
++ show_message << EOF
+ WARNING: The compilation of the vboxdrv.ko kernel module failed during the
+ installation for some reason. Starting a VM will not be possible.
+ Please consult the User Manual for build instructions.