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WSAL22293 – 7.9inch DSI LCD/en

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Documentation notice: This technical documentation was independently rewritten from an archived supplier source. Check technical details and commands against the product version and manufacturer documentation before use.

Summary

Technical overview of the Waveshare 7.9-inch capacitive touchscreen with an IPS panel (400×1280) connected via the Raspberry Pi's DSI interface.

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Technical overview

  • The display uses an IPS panel with a 400×1280 resolution and is driven directly through the Raspberry Pi's DSI interface at up to 60 Hz refresh rate.
  • It features a five-point capacitive touch panel made of toughened glass rated up to 6H hardness.
  • Compatible with Raspberry Pi models Pi5/CM5/CM4/CM3+/CM3 and Pi4B/3B+/3B/3A+, using either a 12 cm DSI cable or a 15-pin FPC cable depending on the board.
  • Operating voltage is 5 V with a minimum current requirement of 0.6 A; operating temperature range is 0–60 °C and storage range is -10–70 °C.
  • For Bookworm/Bullseye, a dtoverlay line for the Waveshare panel is added to config.txt; for Buster, the driver can be installed manually or a pre-installed image can be flashed.
  • Display and touch rotation are configured differently per system: via GUI settings on Trixie/Bookworm, via config.txt on Bullseye/Buster, or via cmdline.txt on the lite version.
  • Screen power can be toggled with wlr-randr under Labwc/Wayfire, while xset dpms force off handles sleep mode under X11.
  • Touch input can be disabled by adding disable_touchscreen=1 to the end of config.txt; the change takes effect after a reboot.

Commands and examples – verify before use:  

dtoverlay=vc4-kms-dsi-waveshare-panel,7_9_inch
git clone https://github.com/waveshare/Waveshare-DSI-LCD
sudo bash ./WS_xinchDSI_MAIN.sh 79 I2C0
sudo reboot
dtoverlay=WS_xinchDSI_Screen,SCREEN_type=5,I2C_bus=10
dtoverlay=WS_xinchDSI_Touch,invertedx,swappedxy,I2C_bus=10
wlr-randr --output DSI-2 --off
wlr-randr --output DSI-2 --on
xset dpms force off
disable_touchscreen=1

Notes and version constraints

  • The correct DSI interface (DSI0 or DSI1) must be selected per board; DSI1 is the default.
  • Before flashing a pre-installed image, the SD card should be formatted and the correct kernel/architecture path (32-bit or 64-bit) identified.
  • After a system update on Buster, previously installed driver files may be overwritten; reinstalling the driver may be necessary.
  • When switching motherboard platforms (e.g., from Pi4B to Pi3B+), the appropriate drivers must be reinstalled because Pi4 and Pi3 load different driver files.
  • Synchronized display-and-touch rotation is supported only on Trixie/Bookworm; on Bullseye/Buster, touch rotation must be set manually in config.txt.
  • Screen control commands apply only to specific graphical environments (Labwc/Wayfire vs. X11); the output name (DSI-1/DSI-2/HDMI-A-1) must match the actual display in use.
  • All changes to config.txt or cmdline.txt require a reboot to take effect.

Source and revision record

  • 7.9inch DSI LCD - Waveshare Wiki
  • Source revision: 105331
  • Captured: 2026-09-03T03:46:34+00:00
  • SHA-256: 7eaaa44fb6f3f2912b6eacabc1d15c245b04a46b6081797b6154e34692c22916
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