Looking Glass - Triage

PetebLazar · August 14, 2018, 6:19am

I think, 2990WX is NUMA only.

noxsicarius · August 15, 2018, 2:02am

Firstly I apologize if this is a repeat question. For Looking Glass, what is a good baseline AMD graphics card to use on the linux host? I’ve already got a GTX 1080 that I plan on using for my VMs. I plan on using the latest version of Fedora running on a TR 1950X. Also I will be using a 144hz 2560x1080 display.

gnif · August 15, 2018, 3:01am

Anything that will support OpenGL and the resolution you intend to run. The host is only displaying “pictures” and doesn’t render the 3d scene.

This is beyond LG’s capability at this time, it will work but your FPS will suffer.

For future reference, this is listed on the LG website’s home page:

https://looking-glass.hostfission.com/

tkoham · August 16, 2018, 5:57am

is there a source repo/gist/whatever for that?

gnif · August 16, 2018, 5:57am

No, this is just a patch I have had laying around for a while. It can be applied with git am 0001-PA-Fixes.patch

tkoham · August 16, 2018, 5:58am

ah, thanks. you mind if I put it up as a gist somewhere so people can see it before downloading?

gnif · August 16, 2018, 5:59am

Go for it, it’s not my work so I didn’t feel right taking any attribution for it. I just updated it to patch QEMU 3 clean.

tkoham · August 16, 2018, 5:59am

thanks, good to know. I’ll be sure to credit spheenik.

tkoham · August 16, 2018, 6:26am

Interesting. Was the audio patch getting upstreamed just wishful thinking, or are the qemu people considering it?

gnif · August 16, 2018, 6:49am

I really don’t know, I have not been tracking it. I know there were some audio changes accepted that this patch set used to contain, but without the remainder of this patch PA audio is still broken.

tkoham · August 16, 2018, 6:51am

hmm. I’ve been using passed through audio hardware from the start so it’s not something I’m personally tracking very closely, but I guess the only thing for it is time.

mbz · August 17, 2018, 5:55am

I have been using the spice audio instead of straight pa and it has been workinh fine. I did have a few freezes on the VM which I think are related to audio (gnif’s description of the problem sounds perfect) but, overall, everything is working really well.

dyslexic_jedi · August 22, 2018, 11:23am

I followed the guide listed on the site, I’m using A11 version of the code. The host is running a GTX 1080 and the guest is running a RX560. The screen displays correctly, No distortions or artifacts, but I have no mouse control. It doesn’t track my mouse at all. Any steps I can take to troubleshoot this? I’m not seeing any error or warning messages on either side of the lookingglass application.

gnif · August 22, 2018, 1:10pm

Are you using SPICE or running without? Please share the output of the client and your VM configuration. Nobody can help you if you don’t give us the information, it’s like saying “my car wont start, whats wrong?”

dyslexic_jedi · August 22, 2018, 1:25pm

Sorry, here is additional information. Yes, I’m using virt manager, which has a spice console, once Looking Glass starts it takes over the console. The mouse works fine on the Virt Manager spice console, but doesn’t work at all in Looking Glass console. I see the warnings about it may be off, but it’s non-existent. Here is the host logs:

[I]               main.c:692  | run                            | Looking Glass ()
[I]               main.c:693  | run                            | Locking Method: Atomic
[I]               main.c:686  | try_renderer                   | Using Renderer: OpenGL
[I]               main.c:775  | run                            | Using: OpenGL
[I]              spice.c:159  | spice_connect                  | Remote: 127.0.0.1:5900
[I]               main.c:901  | run                            | Waiting for host to signal it's ready...
[I]              spice.c:367  | spice_on_common_read           | notify message: keyboard channel is insecure
[I]             opengl.c:552  | pre_configure                  | Vendor  : NVIDIA Corporation
[I]             opengl.c:553  | pre_configure                  | Renderer: GeForce GTX 1080/PCIe/SSE2
[I]             opengl.c:554  | pre_configure                  | Version : 4.6.0 NVIDIA 390.48
[I]               main.c:921  | run                            | Host ready, starting session
[I]               main.c:177  | updatePositionInfo             | client 1024x768, guest 3840x2160, target 1024x576, scaleX: 3.75, scaleY 3.75
[W]               main.c:180  | updatePositionInfo             | Window size doesn't match guest resolution, cursor alignment may not be reliable
[I]             opengl.c:602  | configure                      | Using decoder: NULL
[I]               main.c:177  | updatePositionInfo             | client 1025x768, guest 3840x2160, target 1025x576, scaleX: 3.75, scaleY 3.75
[W]               main.c:180  | updatePositionInfo             | Window size doesn't match guest resolution, cursor alignment may not be reliable

gnif · August 22, 2018, 1:45pm

Please share your VM configuration.

dyslexic_jedi · August 22, 2018, 2:00pm

https://pastebin.com/fztzEspj

gnif · August 22, 2018, 2:03pm

Remove the tablet device, LG doesn’t support absolute positioning.

dyslexic_jedi · August 22, 2018, 2:10pm

The mouse now shows up on the screen, and semi-works, a definite improvement thank you! But anything else I can do to improve mouse performance, it’s really laggy.

gnif · August 22, 2018, 3:52pm

Apply the windows registry fix for mouse acceleration as described on the LG website. Try capture the mouse using Scroll Lock.