Looking Glass Go presets selected even when Portrait 16 is detected

[CrossVR]

Describe the bug
I have a Looking Glass Portrait 16 and AliceLG consistently selects Looking Glass Go preset.

To Reproduce
Steps to reproduce the behavior:

1. Refresh device list
2. See correct device listed in device list
3. See incorrect preset being chosen

Expected behavior
I expect it to select the Portrait 16 preset for a Portrait 16 device.

Platform & Versions (please complete the following information):

• OS: Windows 10
• Blender Version: 4.5
• Alice/LG Version 2.3.1

Attach log files
I added an extra log to ui.py to show that it is attempting to find a preset with 7680x4320 resolution and 4x12 views, which seems to be an old legacy preset for the original 48 views Looking Glass Portrait.

[INFO] 12/15/2025 00:25:36 - ----------------------------------------------
[INFO] 12/15/2025 00:25:36 - Initializing 'Alice/LG v2.3.1' ...
[INFO] 12/15/2025 00:25:36 -  [#] Add-on path: C:\Users\Armada\AppData\Roaming\Blender Foundation\Blender\4.5\scripts\addons\AliceLG
[INFO] 12/15/2025 00:25:36 -  [#] Registered add-on operators in Blender.
[INFO] 12/15/2025 00:25:36 -  [#] Done.
[INFO] 12/15/2025 00:25:36 - Connecting to Looking Glass Bridge ...
[INFO] 12/15/2025 00:25:36 -  [#] Connected to Looking Glass Bridge version: 2.6.3
[INFO] 12/15/2025 00:25:36 - Camera frustum drawing handler started.
[INFO] 12/15/2025 00:25:36 - Camera frustum drawing handler stopped.
[INFO] 12/15/2025 00:25:36 - Camera frustum drawing handler started.
[INFO] 12/15/2025 00:25:46 - Refreshing device information ...
[INFO] 12/15/2025 00:25:46 -  [#] Number of connected displays: 1
[INFO] 12/15/2025 00:25:46 -  [#] Display 0: Looking Glass 16'' Portrait (Gen3)
[INFO] 12/15/2025 00:25:46 - Attempting to find preset with 7680x4320 resolution with 4x12 views

[regcs]

Hello! Thanks for the bug report – I can't try to reproduce right now, since I don't have my LG accessible at the moment. Did this issue appear with the new version v2.3.1 and has no been an issue for you with AliceLG v2.3.0?

[CrossVR]

It was an issue in v2.3.0 as well

[regcs]

Okay, thanks. The issue seems to be that the defined preset for Looking Glass Portrait 16 (Gen 3) is not 7680x4320, which Looking Glass Bridge tells the add-on is the expected quilt resolution.

@BryanChrisBrown Can you confirm which would be the correct standard preset for this specific Looking Glass? Currently, we have a 5995x6000 preset with 66 views:

{
    'description': "16 Portrait, 66 Views", 
    'quilt_width': 5995, 
    'quilt_height': 6000, 
    'view_width': 545, 
    'view_height': 1000, 
    'columns': 11, 
    'rows': 6, 
    'total_views': 66, 
    'hidden': False 
}

[CrossVR]

A 7680x4320 resolution with 4x12 views wouldn't make sense at all for a 16" portrait display I think? Are we sure that info is coming from the display and isn't some uninitialized default?

Unlike displays like the Go or Portrait a USB connection to the PC isn't required for the Portrait 16. I think the calibration data is simply part of the EDID sent over HDMI? Maybe the standard preset for it simply isn't communicated due to size constraints in the EDID?

[alxdncn]

@CrossVR @regcs the quilt standards are defined here: https://docs.lookingglassfactory.com/keyconcepts/quilts#quilt-settings-by-device

12x4 at 8K actually does work well for a Portrait 16" but it's not our standard - that's what we use for the 27"

[regcs]

@alxdncn Okay, thanks for the link. So the quilt preset is correctly defined. But then it seems as if the device is communicating the wrong default quilt dimensions ...

@CrossVR If you find some time, it would be nice if you could try the attached Alice/LG version. It just adds some code for debugging purposes. I will need to see the logging output.

AliceLG.zip

[CrossVR]

pylightio.log
alice-lg.log

Sorry it took a while to get back to this issue.