Westinghouse WC34DX9019 won't run at 3440 x 1440

[gtskhaki]

(07-08-2020 08:53 PM)ToastyX Wrote:  Is the Dell 34" also using HDMI or is it using DisplayPort? I think Intel GPUs are limited to around 300 MHz pixel clock with HDMI. You might be able to get it working at 3440x1440 by adding a lower refresh rate like 50 Hz.

You were right, it works as long as the pixel clock is below 300. Thanks so much for the suggestion!