Common problems and solutions for the L1.5 robotics laboratory.
Many unexpected application errors and login issues are caused by the user's disk quota being full.
Check your quota:
quota -f ~
Most common fix - delete the cache directory:
rm -rf ~/.cache
To clone the Wacom graphic tablet to the projector, type in the terminal:
xrandr --output DVI-D-0 --mode 1920x1080 --same-as HDMI-1
To clone the main display to the projector:
xrandr --output DVI-D-0 --mode 1920x1080 --same-as HDMI-0
Speech bubble backgrounds and text become nearly invisible due to a corrupted theme configuration file.
Fix:
In Choregraphe's Robot View, the virtual NAO robot is not displayed. Selecting a specific virtual NAO version also has no effect.
Probable cause: The machine is missing an NVIDIA GPU. Currently there are no known computers in the lab with this issue, but this may change.
Check if NVIDIA is present:
lspci | grep -i nvidia
Fix: If no output is returned, switch to a different lab computer that has an NVIDIA GPU.