yup, you are correct that it did nothing - ‘dim-off’ state still.
I do have a Pi 3 but it’s currently embedded into my household Volumio music server, so I don’t really want to pull that apart unless I had to.
maybe I’ll send off an email to WaveShare - worse the could do is to NOT reply I guess… not sure if they can do anything or would want to, but they did do a guide on how to work with their (HDMI) screens and Volumio, so they might be interested?
In the mean time, if you do have any other ideas, I’m game to try - worse-come-to-worse, I’d just re-flash it again and copy all my music back to it…
I have the same wave share 4.3 dsi touchscreen and no problem, i am running volumio beta 3 at the moment but with fresh version 2 i had no problem dimming the screen or completely off after a while. @gvolt we found out recently that there were probably two different versions of it, maybe it has to do with that.
from what I can see, mine is also the same version as michel8166’s - it has the same layout and ‘added stuff’ to the back of the board on his pic in the linked thread.
@michel8166 - the orientation of your screen in your (very nice, btw) project is in the horizontal / 0 degree rotation, which also works on mine too. However, my project has it in the vertical / 90 degree rotation, which does not seem to work.
rendering of my headphone amp project (as mine is currently disassembled again due to this issue)
set to 90 degrees and now the problem is also present, it does not turn off, the screen flickers 2x briefly, so it does make an attempt to go out, but it does not go through.
Too bad… So although the display uses the same driver as the original Raspberry Pi Foundation Touchscreen it obviously behaves differently. The difference in behaviour is the more annoying as there doesn’t seem to be a way to distinguish one from the other by software.
So at least the display behaves similarly “wrong” on Pi3 and Pi4 if rotation is set to 90 deg. (270 deg. will be no different) when the screen should enter DPMS mode “off”…
Although I don’t expect this to be a solution, but while you’re at it: Could you increase GPU mem to e.g. 64MB and check if it makes a difference?
Hi Just to let you know.
I Just found the actual reason for the weird behavior of the touch part.
There is a new plugin “Now Playing” that messes up the touch calibration.
After enabling this one, the touch rotation was 180 deg rotated. disabling it the touch was back to normal.