Here are a couple tools to start a photo slideshow in Linux.

feh

My favorite is this lightweight cli, called feh.

Install:

sudo apt install feh

Point the command at a directory with photos:

feh -F ~/my/photos

-F is for fullscreen, containing larger photos in the viewport.

Use arrow keys to navigate through photos. q to quit.

Shotwell

Shotwell is a GUI that can act as an album keeper and editor in addition to a slideshow.

Install:

sudo apt install shotwell

• Import photos
• Rotate as needed
• F5 to start slideshow
• Or View > Slideshow

What others?