Dell U4021QW has an unusual display when using with ChromeOS
When the Dell U4021QW monitor is connected to Chromebook over HDMI port, the display is abnormal.
Affected Products
- All Chromebook
- Dell U4021QW Monitor
ChromeOS does not support Extended Display Identification Data (EDID) v3 block.
Switch to Lower Primary resolution
Adjust the display settings to a lower screen resolution. See instructions below.
- Press the joystick button to launch the Onscreen Display (OSD) main menu.
- Move the joystick to select input source.
![UltraSharp 40 OSD Menu: Input Source settings](https://supportkb.dell.com/img/ka06P0000004lGwQAI/ka06P0000004lGwQAI_en_US_1.jpeg)
Figure.1 UltraSharp 40 OSD Menu: Input Source settings.
- Move the joystick up or down to select HDMI 1/HDMI 2, press and hold the joystick 8 seconds, and the following message appears:
![Prompt to switch to lower Primary resolution for HDMI](https://supportkb.dell.com/img/ka06P0000004lGwQAI/ka06P0000004lGwQAI_en_US_2.jpeg)
Figure.2 Prompt to switch to lower Primary resolution for HDMI
- Select Yes to switch from HDMI 2.0 (default) to HDMI 1.4.