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Published 20 hours ago • verified publisher icon waveshare

Not working on raspberry pi 5

Open Giuseppe7887 opened this issue 1 year ago • 9 comments

raspberry pi 5, display lcd rpi c, your driver show35C-show, your config file config-35c.txt, system not updated, can i know what am i doing wrong?

Giuseppe7887 avatar Jan 24 '24 20:01 Giuseppe7887

I have a pi5 and 3.5(A) tft display . It simply kills the display. No output

hannadrehman avatar Jan 26 '24 19:01 hannadrehman

PI5 + 3.5B LCD TOUCH , NO OUTPUT !!

mahdiabbasinourabadi avatar May 04 '24 21:05 mahdiabbasinourabadi

Same here, would REALLY love a fix.

EngineeringOV avatar Jun 15 '24 21:06 EngineeringOV

Do you use Raspbian bookworm? If yes: It still works fine, since Raspbian bookworm the files config.txt and cmdline.txt moved from /boot/ to /boot/firmware/ . So I did following before I run ./LCD-show installation:

mv /boot/config.txt /boot/config.txt.old
mv /boot/cmdline.txt /boot/cmdline.txt.old
ln -s /boot/firmware/config.txt /boot/config.txt
ln -s /boot/firmware/cmdline.txt /boot/cmdline.txt

EDIT: I could reproduce the issue in raspbian/bookworm 64bit, but on raspbian/bookworm 32bit it works with this workaround.

vchrizz avatar Jun 27 '24 20:06 vchrizz

didn't work

Giuseppe7887 avatar Jun 28 '24 22:06 Giuseppe7887

The problem isn't the configs, it's that FBCP is no longer supported.

EngineeringOV avatar Jun 30 '24 08:06 EngineeringOV

DispmanX was deprecated to the point that it wasn't offered as a default feature on Bookworm and DispmanX isn't offered on a Pi5.

The Pi Foundation and the Kernel community moved to supporting KMS/DRM panel support back around this time LAST year (Around the time of the ticket here...) https://forums.raspberrypi.com/viewtopic.php?p=2190025

KMS/DRM support has been provided by many of the mainline players...and in the RaspberryPI kernels, etc. Yet Waveshare? Conspicuously missing. Used to think highly of them...now? I've got a batch of HW, that they're still selling out of their store and out of Amazon, that absolutely does not work...and in a manner that they know or should've known (Instead of that song and dance we got in this thread...)

Step up to the plate and support your hardware you're STILL SELLING or quit selling it and we'll figure out how to fix your mess...but in that case you'll be put to the least favored supplier status on that note.

madscientist42 avatar Jan 20 '25 23:01 madscientist42

So in short, this will not work on a now years old Raspberry Pi 5? So my setup is for the bin? Hm. Don't think it's waveshare fault but the seller should clearly mark if this is Pi5 compatible or not.

tscholze avatar May 05 '25 10:05 tscholze

they updated the preconfigured image, now it is working, you have to modify the config.txt before flashing it on raspberry pi, in the last rows there are a list of lcds display, you have to decomment the right one, then flash the image, for me the image was read-only so i had to figure out how to edit, here is official image www.waveshare.com/wiki/3.5inch_RPi_LCD_(C)#Image

Giuseppe7887 avatar May 05 '25 11:05 Giuseppe7887