Solve: Only get 800x480 resolution

murmeltier08 commented 3 years ago

I get only 640x480 instead of 800x480 resolution at Raspberry Pi 3. Changing the /boot/config.txt not working, try different commands, the last one was:

framebuffer_width=800
framebuffer_height=480
max_usb_current = 1
Hdmi_group = 2
Hdmi_mode = 87
Hdmi_cvt 800 480 60 6

tvservice -s shows the wrong resolution state 0xa [HDMI DMT (4) RGB full 4:3], 640x480 @ 60.00Hz, progressive

I solve it with : https://elinux.org/R-Pi_Troubleshooting#Can_only_get_800x480_resolution_in_LXDE_.28Arch_linux.29

sudo nano /boot/cmdline.txt
insert this line "dwc_otg.lpm_enable=0 console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 root=/dev/mmcblk0p2 rootfstype=ext3 rootwait"

After reboot fbset -s shows:

mode "800x480"
    geometry 800 480 800 480 32
    timings 0 0 0 0 0 0 0
    rgba 8/16,8/8,8/0,8/24
endmode

Perhaps this will be a good hint for the documentation?

Thyraz commented 3 years ago

Hi murmeltier,

will take a closer look at my configuration if I inserted something similar and missed it in the Readme. If it wasn't necessary for me, maybe a thread over at the discussions with solutions for the Display on various Pi versions might be a good idea. https://github.com/Thyraz/Sonos-Kids-Controller/discussions

That thread could be linked in the Readme.

NoTrace-Kai commented 3 years ago

Perhaps it works also with installing the drivers on the Raspberry Pi: https://github.com/goodtft/LCD-show

NoTrace-Kai commented 3 years ago

I got it working with this insert in config.txt ... but I also had to rotate the LCD Screen 180° and the Touch-Settings also. Now the Display is fitting in my Case ;)

hdmi_force_edid_audio=1 max_usb_current=1 hdmi_force_hotplug=1 config_hdmi_boost=7 hdmi_group=2 hdmi_mode=1 hdmi_mode=87 hdmi_drive=1 hdmi_cvt 800 480 60 6 0 0 0

CU Kai ...

Thyraz / Sonos-Kids-Controller

Solve: Only get 800x480 resolution #8