System running on Low Graphics mode warning after installing RTABMap

[multinet]

I am running Ubuntu 16.04.5 LTS with ROS Kinetic for SLAM using RTABMap using an Intel NUC6i5SYH (Core i5) 8GB RAM.

All the files are installed correctly; Ubuntu, ROS Kinetic, OpenCV, Drivers for Kinect, RTABMap, Turtlebot and Chefbot packages. The program also runs as expected. But as soon as I restart the NUC after a shutdown, it starts in low graphics mode.

I tried clicking on the options given but most of them just put me back at the warning screen. I tried reconfiguring the packages but that didn't work either.

I tried reinstalling ubuntu-desktop, lightdm and xorg files but to no avail. After a fresh install of ubuntu and reinstalling all the packages this problem comes again.

In the console login it gives the following errors

/dev/null: Permission denied
/dev/null: Permission denied
...
/dev/null: Permission denied
setup.sh: No such file or directory

When I use

locate setup.sh

 I get multiple paths showing the setup.sh files.

/home/nuc/.local/share/Trash/files/devel/setup.sh
/home/nuc/catkin_ws/build/catkin_generated/installspace/setup.sh
/home/nuc/catkin_ws/devel/setup.sh
/home/nuc/catkin_ws/install/setup.sh
/opt/ros/kinetic/setup.sh
/opt/ros/kinetic/share/catkin/cmake/templates/setup.sh
/usr/share/gazebo/setup.sh
/usr/share/gazebo-7/setup.sh
/usr/share/lightdm/guest-session/setup.sh

The directory I last used bashrc was

/home/nuc/catkin_ws/devel/setup.sh

I tried to use

source /home/nuc/catkin_ws/devel/setup.sh

 as root but that didn't work either.

I have tried this for about 7 times and I can't seem to figure out what the matter is. Kindly help me resolve this issue.

Thank you

[matlabbe]

Hi, you should not source setup.bash as root.

I cannot really hep about your low graphics mode problem (it looks more an Ubuntu problem), but what happens if you do the following:

$ source /opt/ros/kinetic/setup.bash
$ source ~/catkin_ws/devel/setup.bash
$ roslaunch rtabmap_ros rtabmap.launch