# Trouble on First installation **URL:** \ **Category:** Uncategorized\ **Created:** [November 25, 2021, 6:29pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/trouble-on-first-installation/376 "2021-11-25T18:29:36Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![riccardomantelli](https://avatars.discourse-cdn.com/v4/letter/r/6de8d8/32.png) [@riccardomantelli](https://rpi-rgb-led-matrix.discourse.group/u/riccardomantelli)\ **Post date:** [November 25, 2021, 6:29pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/trouble-on-first-installation/376/1 "2021-11-25T18:29:36Z")
Hi I’m trying to run the different demo and examples with this setup: Raspberry PI4 + Adafruit RGB Matrix Bonnet for Raspberry PI i’ve try with different options and combinations but I reach every try the same patterns but not the correct effect. An example of parameters I used: sudo ./demo -D0 --led-cols=64 --led-rows=32 --led-chain=2 --led-multiplexing=0 --led-brightness=1 --led-slowdown-gpio=4 This are two images 1 image \> Two lines I see when I connect the two p5 HUB75 64x32 \> [c817a449-5f14-4c66-a794-efddc31d1142 — ImgBB](https://ibb.co/f0db1hr) 2 image \> The patterns I see when I run the demos and examples \> [cbc5dc74-615e-4945-ac0f-65178b767d40 — ImgBB](https://ibb.co/hFx6nGB) Anyone can help me please to understand what’s wrong in my setup or process? Thanks so mutch Riccardo ---
**Author:** ![marcmerlin](https://yyz2.discourse-cdn.com/free1/user_avatar/rpi-rgb-led-matrix.discourse.group/marcmerlin/32/40_2.png) [@marcmerlin](https://rpi-rgb-led-matrix.discourse.group/u/marcmerlin)\ **Post date:** [January 14, 2022, 5:34pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/trouble-on-first-installation/376/2 "2022-01-14T17:34:39Z")
Sorry for the slow reply, hard to know what panels you have, so you’d have to try all the multiplexing and addressing options, but I don’t see you having put the adafruit hat option in your command line options ---
**Author:** ![weins3](https://avatars.discourse-cdn.com/v4/letter/w/c68b51/32.png) [@weins3](https://rpi-rgb-led-matrix.discourse.group/u/weins3)\ **Post date:** [January 31, 2025, 11:25am UTC](https://rpi-rgb-led-matrix.discourse.group/t/trouble-on-first-installation/376/3 "2025-01-31T11:25:15Z")
try this sudo ./demo -D -m 0 --led-no-hardware-pulse --led-gpio-mapping=regular --led-slowdown-gpio=2 --led-rows=32 –led-cols=64 --led-chain=2