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* Did you install the Spice Guest Tools?# Looking Glass** Before you can /dev/shm/looking-glass rw,* Are you using Wayland?</syntaxhighlight>** Clipboard functionality is not compatible with Wayland. If you are using it you need to disable it for the clipboard to work.Save, exit, and restart AppArmor:<syntaxhighlight lang=text>sudo systemctl restart apparmor</syntaxhighlight>
=== When Launching Looking Glass the Desktop Doesn't Appear ===
*''' Using an AMD GPU? '''
** After the end of the Radeon HD Series AMD started incorporating a feature into their GPU's that effectively puts the card to sleep when no display is connected. For this reason one of two conditions need to be met.
# The GPU needs to remain plugged into a monitor (this is good for testing & troubleshooting).
# The GPU needs to have a plug like the ones used in GPU Crypto mining installed to trick the card into thinking that a display is connected.
=== Scroll Wheel Scrolls in the Same Direction Regardless of Rotation The Clipboard is not Working ===* '''Did you enable it?'''** Before you can Copy/Paste content between the Guest and the Host you must [https://looking-glass.hostfission.com/wiki/FAQ#How_to_enable_clipboard_synchronization_via_SPICE Enable Clipboard Synchronization]* '''Did you install the Spice Guest Tools?'''** Before you can Copy/Paste content between the Guest and the Host you must install the [https://www.spice-space.org/download.html SPICE Guest Tools driver]. The download is labeled as "spice-guest-tools".***<span style="color: red;">'''NOTE: Do make sure that you do NOT install the QEMU Guest Tools driver. These are not the same.'''</span>* '''Are you using Wayland?'''** Clipboard functionality is not compatible with Wayland. If you are using it you need to disable it for the clipboard to work.
=== Clipboard Followed Installation Instructions but Looking Glass Still Doesn't Launch ===At times depending on your distribution circumstances can cause Looking Glass to still not run. Below is a list of known issues that can prevent Looking Glass from running properly.==== AppArmor ====AppArmor is not Working a security application that can prevent Looking Glass from running. How to add security exceptions may vary on your distribution:===== Debian(Ubuntu) =====Start by opening the file <code>/etc/apparmor.d/abstractions/libvirt-qemu</code>. Now locate and edit the following lines to represent how they appear in the example:<syntaxhighlight lang=text># for usb access /dev/bus/usb/** rw, /etc/udev/udev.conf r, /sys/bus/ r, /sys/class/ r, /run/udev/data/* rw, /dev/input/* rw,
