X1 Yoga G5 - some Fn keys and Yoga mode not working

[AlexFullmoon]

Thinkpad X1 Yoga 5, macOS Ventura, latest release of YogaSMC. Using SSDT-THINK and SSDT-ECRW. Most functions and Fn keys work, except:

• Fn-F7 - Second display. YogaSMC shows notification, but it doesn't appear to do anything (i assume it should switch between extend and clone modes?). Might be something to do with my display configuration, though: Display repeat in menu bar doesn't have any options besides opening settings.
• Fn-F9 to Fn-F11, Fn-Tab, Fn-PrtSc do not do anything, YogaSMC shows notifications with different Event 0x13##:0 messages. Is there a way to add some script to those events?
• Fn-12 aka custom hotkey works one time out of ten. Usually nothing happens, but sometimes it shows notification for Custom Hotkey and opens system settings. How do I debug it and how do I change what it does?
• Yoga mode (i.e. bending display backwards) is not detected at all. No notification, keyboard isn't disabled. Setting in prefpane doesn't seem to do anything. Again, how do I debug that?