Raspberry Pi User Help

Ultra-wide monitor support – Screen resolution, Video and Audio Raspberry Pi 4 B

Ultra-wide monitor specs:
34 inch WHFD (2560 x 1080) IPS Display (21:9) – HD 10 AMD Free sync

Arch linux with Openbox (lightdm)


  1. Managed to get 2560×1080 pixels with "hdmi_enable_4kp60=1" in /boot/config.txt but the default DPI is less meaning that text and icons are too small.
  2. When playing video in full screen mode with aspect ratio beyond 720p , it’s not smooth as if its skipping frames but still plays, but plays smoothly when played at 720p or below.
  3. No audio over HDMI, not sure what I am missing in config.txt

Required information given below, please ask any addition info needed.
Thank you in advance 🙂

[xxx@archlinux ~]$ xdpyinfo | grep -B2 resolution

  1. screen #0:
  2. dimensions: 2560×1080 pixels (677×286 millimeters)
  3. resolution: 96×96 dots per inch

/boot/config.txt :

  1. gpu_mem=512
  2. initramfs initramfs-linux.img followkernel
  3. kernel=kernel8.img
  4. arm_64bit=1
  5. device_tree=broadcom/bcm2711-rpi-4-b.dtb
  6. enable_gic=1
  7. dtparam=audio=on
  8. hdmi_drive=2
  9. hdmi_enable_4kp60=1
  10. disable_overscan=1

Leave a Reply

Your email address will not be published. Required fields are marked *