Project to a projector or second screen

[introvertrana]

Our university's projector doesn't detect whenever i try project/cast from it using manjaro. I've had success projecting it using windows but not linux. any software to project to projector or a secondary screen.
I connect with the projector using hmdi converter and a wga cable coming from the projector.

I want to project my entire screen or specific slideshow or region.
Also I want to connect to my home's wireless tv (using a smartbox/chinese like a chromecast usb)... i want to cast movies to it but i didn't have any success with linux. Thankful for your help

[AgentS]

It depends on your hardware and software.
Without any logs it is impossible to suggest any solution, other than guessing.
Provide at least these, with the projector connected:

inxi -SMGaxxxz
pacman -Qs optimus
xrandr | awk ' /connected/ { print $1, $2 }'
for p in /sys/class/drm/*/status; do con=${p%/status}; echo -n "${con#*/card?-}: "; cat $p; done
grep -A1 -B1 -i "modes \|modeline\|output\|Time" Xorg.0.log

Please, read some helpful info, so you can help us help you more efficiently:
How to provide information about your issues
How to change video drivers or configuration and troubleshoot
Options for Nvidia Optimus graphics - FAQ

[introvertrana]

thanks atleast 1 person replied i'll post the results with projector connected