How do I add myself to the video group after installing AMDGPU-PRO driver?

Question

I'm trying to install AMDGPU-PRO 16.40 but after installation I can't add myself to the video group. I've tried running sudo usermod -a -G video $LOGNAME but after going into groups all I can see is morgan adm cdrom sudo dip plugdev lpadmin sambashare. Should I just cut my losses, uninstall the driver and continue without, or is there something else stopping me from adding myself to the video group? Thanks for any help.

Solution

Just to sum up with some of the great information from steeldriver in the comments;

Install drivers following AMD's instructions

Copy sudo usermod -a -G video $LOGNAME into a terminal

Type groups.

If video isn't listed, then log out and log back in. (Thanks again steeldriver)

Hopefully, you should be able to log in.

Go into a terminal and type groups again

If everything went according to plan, then video should be listed alongside other groups.

Comments

[George Udosen]

Did you restart your system?

[morgogs]

Last time I tried this using the exact same steps and restarted I got a black screen on start-up and had to reinstall. I'd rather not go through it again because I know it will probably not work.

[steeldriver]

Restarting is extreme - it should be sufficient to start a new login shell (e.g. su - username) or at the most, log out and back in from the GUI

[morgogs]

I logged out and back in and it worked! Thank you soo much.

[gone]

Logging out then back in worked for me.