---
name: "looking-glass-client"
section: "1"
platform: "linux"
package: "looking-glass-client"
version: "0+b1-5"
release: "Debian 11 (Bullseye)"
platforms: ["linux"]
url: "https://new.carta.tech/looking-glass-client"
---

# looking-glass-client(1)

Low latency KVM FrameRelay implementation

## NAME

looking-glass-client - Low latency KVM FrameRelay implementation

## SYNOPSIS

**looking-glass-client** \[*OPTIONS*\]

## DESCRIPTION

LookingGlass enables you to use shared memory to pass rendered frames from a virtual machine back to the host system.

A LookingGlass Host implementation is required to run on the guest virtual machine. It is recommended that the client and host versions match.

## OPTIONS

- **-h**

  Print out this help

- **-C *PATH***

  Specify an additional configuration file to load

- **-f *PATH***

  Specify the path to the shared memory file \[default: /dev/shm/looking-glass\]

- **-L *SIZE***

  Specify the size in MB of the shared memory file (0 = detect) \[default: 0\]

- **-s**

  Disable spice client

- **-c *HOST***

  Specify the spice host or UNIX socket \[default: 127.0.0.1\]

- **-p *PORT***

  Specify the spice port or 0 for UNIX socket \[default: 5900\]

- **-j**

  Disable cursor position scaling

- **-M**

  Don't hide the host cursor

- **-K**

  Set the FPS limit \[default: 200\]

- **-k**

  Enable FPS display

- **-g *NAME***

  Force the use of a specific renderer

- **-o *OPTION***

  Specify a renderer option (ie: opengl:vsync=0)

  Alternatively specify "list" to list all renderers and their options

- **-a**

  Auto resize the window to the guest

- **-n**

  Don't allow the window to be manually resized

- **-r**

  Don't maintain the aspect ratio

- **-d**

  Borderless mode

- **-F**

  Borderless fullscreen mode

- **-x *XPOS***

  Initial window X position \[default: center\]

- **-y *YPOS***

  Initial window Y position \[default: center\]

- **-w *WIDTH***

  Initial window width \[default: 1024\]

- **-b *HEIGHT***

  Initial window height \[default: 768\]

- **-Q**

  Ignore requests to quit (ie: Alt+F4)

- **-l**

  License information

## AUTHOR

looking-glass-client is written by Geoffrey McRae (https://looking-glass.hostfission.com/)

This manual page was written by Lennart Weller \<lhw@ring0.de\>, for the Debian project (but may be used by others).