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FAQ
,one letter typo fix
https://www.youtube.com/watch?v=U44lihtNVVM
=== Can I feed the VM directly into OBS? ===
Yes provided you're using a bleeding-edge version, [[OBS]] support is brand new. There is a plugin to build in the `obs` directory for this.
'''Note''': This plugin is brand new and is missing mouse cursor support.
=== Why is my UPS (Updates Per Second) so low? ===
There are several reasons why this can happen, the most common is your capture resolution. At the time of this writing, the windows capture methods struggle to capture high resolutions under certain circumstances, as a general rule of thumb anything greater then than 1200p (1920x1200) starts to suffer from performance issues.
Another cause can be how the game or application you are running is configured. Because of the way windows integrate with the WDM (Windows Desktop Manager) running applications in "Full Screen" mode may in some cases cause a large performance penalty. Try switching to windowed full-screen mode, the difference in performance can be like night and day. Titles known to be affected by this are Fallout76, The BattleField Series and SCUM.
You don't need Display Spice enabled. Looking Glass has a Spice client built in to provide some conveniences, but you can disable it with the "-s" argument.
Note that without Spice, you will not be sending mouse/keyboard events to the guestnor will you get clipboard Synchronization support.
=== Where is the host application for Linux? ===
== Mouse ==
=== The mouse is jumpy, slow, laggy when using SPICE ===
Please be sure to install the SPICE guest tools from https://www.spice-space.org/download.html#windows-binaries.
=== How to enable clipboard synchronization via SPICE ===
Install the SPICE guest tools from https://www.spice-space.org/download.html#windows-binaries.
Choose only one of the settings below (the one that applies to your configuration):
* QEMU
<syntaxhighlight lang=bash>
-device virtio-serial-pci \
-chardev spicevmc,id=vdagent,name=vdagent \
-device virtserialport,chardev=vdagent,name=com.redhat.spice.0
</syntaxhighlight>
* Virt Manager GUI
** Open Machine Properties > Add Hardware > Channel
** Set Name to <code>com.redhat.spice.0</code> and Device Type to <code>Spice agent (spicevmc)</code> and click Finish
** No need to add VirtIO Serial device, it will be added automatically
* libvirt using virsh
** Edit the VM using virsh <code>sudo virsh edit VIRTUAL_MACHINE_NAME</code>
** Paste the code from below right above <code></devices></code> (note the closing tag)
<syntaxhighlight lang=xml>
<!-- No need to add VirtIO Serial device, it will be added automatically -->
<channel type="spicevmc">
<target type="virtio" name="com.redhat.spice.0"/>
<address type="virtio-serial" controller="0" bus="0" port="1"/>
</channel>
</syntaxhighlight>
=== The mouse doesn't stay aligned with the host. ===
This is due to windows mouse acceleration, it can be disabled by following one of these methods:* Disabling pointer precision (Control Panel > Mouse > Pointer Options > Uncheck Enhance pointer precision)* By changing the acceleration behavior with the following registry magic:http://donewmouseaccel.blogspot.com.au/2010/03/markc-windows-7-mouse-acceleration-fix.html (Contrary to the title this works just fine on Windows 10)
Some other things to try:
== Audio ==
Looking Glass does not handle audio at all, nor will it ever. If you're having However an audio problems please look to Qemu solution know as Scream is included in the Additional Guides section with two methods for helpinstallation:* [[Using_Scream_over_LAN | Using Scream over LAN]]* [[Using_Scream_over_IVSHMEM | Using Scream over IVSHMEM]]Of the two '''Scream over LAN''' is objectively better however if complete isolation of the VM from the Host network is necessary '''Scream over IVSHMEM''' will get it done.
== Windows ==
=== The Windows Logon Screen, Shutdown, UAC Dialogs, Ctrl+Alt+Del, LockScreen do not work. ===
'''Note:''' This information is deprecated as of 2020-08-12, the host now has a helper service to launch it at login with elevated privileges. Only the Login Screen can not be captured. These screens are on the "Secure Desktop", Microsoft has intentionally limited access to capture this screen to prevent malware attempting to capture information from these screens that might be sensitive. There is little we can do here unless Microsoft are is willing to let us sign the host application as an 'Accessibility' program.` The workaround for this issue is to turn down the security level in the `User Account Control Settings` dialog as shown here: [[Image:Uac.png]]
Users of NVIDIA cards that support the NVidia Capture API (Quadro, Tesla, etc) will find this limitation only applies to the Windows Logon Screen and Shutdown Screens, the NvFBC capture API is able to capture the "Secure Desktop" outside of Microsoft's control.
=== The Windows host program doesn't work as a service ===
'''Note:''' This information is deprecated as of 2020-08-12, the host now has a helper service to launch it at login with elevated privileges.
As of Windows Vista, Microsoft deprecated the ability for services to interact with the user's desktop, and as of Windows 10 this is enforced. There is nothing we can do about this.
Please see [[Installation#Using_the_Windows_Host_Application|Using the Windows Host Application]] for how to setup a scheduled task to launch the application at login.
=== NvFBC (NVIDIA Capture API) doesn't work ===
Unfortunately, NVIDIA deemed fit to only allow owners of "Professional Cards", and their own software (ShadowPlay) the right to use the NVIDIA Capture API. There is little we can do about this other than to complain to NVIDIA.
=== The screen stops updating when left idle for a time ===
Windows is likely turning off the display to save power, you can prevent this by adjusting the `Power Options` in the control panel.
