Troubleshooting • trouble changing resolution waveshare screen

i have a waveshare 5.5 inch 2k screen, but i need the resolution to be in 1080 or 1920 in order to run a certain application. since i cant changed it through the os i tried it in the config file like waveshare says you should do to set it up. now this glitches my whole screen out, the resolution works perfectly fine in windows though


Waveshare the manufacturer says you have to type this in the config file
hvs_priority=0x32ff
gpu_mem=256
config_hdmi_boost=10
hdmi_force_hotplug=1
hdmi_group=2
hdmi_mode=87
hdmi_drive=2
hdmi_pixel_freq_limit=268500000
#pi4:
hdmi_timings=1440 0 10 10 140 2560 0 11 2 2 0 0 0 50 0 206000000 3
#3B/ZERO needs to change to the following line of timings configuration and block dtoverlay=vc4-kms-v3d or dtoverlay=vc4-fkms-v3d
#hdmi_timings=1440 0 10 10 140 2560 0 11 2 2 0 0 0 50 0 180000000 3
disable_overscan=1
framebuffer_width=1440
framebuffer_height=2560
max_framebuffer_width=1440
max_framebuffer_height=2560
extra_transpose_buffer=2

i changed it based on a windows program that tells you hdmi timings to this
hvs_priority=0x32ff
gpu_mem=256
config_hdmi_boost=10
hdmi_force_hotplug=1
hdmi_group=2
hdmi_mode=87
hdmi_drive=2
hdmi_pixel_freq_limit=121892000
#pi4:
hdmi_timings=1080 1 48 32 80 1920 1 3 10 33 0 0 0 50 0 121892000 3
#3B/ZERO needs to change to the following line of timings configuration and block dtoverlay=vc4-kms-v3d or dtoverlay=vc4-fkms-v3d
#hdmi_timings=1440 0 10 10 140 2560 0 11 2 2 0 0 0 50 0 180000000 3
disable_overscan=1
framebuffer_width=1080
framebuffer_height=1920
max_framebuffer_width=1080
max_framebuffer_height=1920
extra_transpose_buffer=2

this was the result, anybody have some advise
https://imgur.com/a/r29TQGF

Statistics: Posted by Wbert — Sun Mar 31, 2024 6:40 pm — Replies 3 — Views 53

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