LG DualUp 28MQ780-B
LG DualUp 28MQ780-B is one of the products in the database.
About
An experimental 16:18 vertically-stacked format meant to emulate two monitors — but a handheld's DP Alt Mode negotiation systemically fails against its EDID at the video-pipeline level, producing an undetected black screen even though USB-C power delivery works fine.
- DP Alt Mode
- Yes
- Max resolution
- 2560x2880
- Requires DisplayLink driver
- No
Ports: 1× HDMI, 1× DisplayPort and 1× USB-C
Confirmed with
- Notebook (generic)
The 2560x2880 vertical grid collides with Linux/SteamOS-style display controllers: although USB-C Power Delivery negotiates and peripherals are recognized correctly, the video subsystem specifically fails its EDID handshake, producing an undetected black screen with no image output at all.