Repetier Pi LCD issues

opy01

If it's not one thing, it's another lol.
So I have a Pi 4 and LCD touch. The touch works great on this one but the screen never does after power outage.
In the beginning it worked. then it started showing the incognito window and would not go away until I did a sudo reboot several times. I did an update a little while back and it stopped showing that screen but now it is just a white screen and no matter how many times I power down or reboot or anything I do the screen is just white. The web gui works fine though.

With those issues I decided to go back to my old Pi 3 with a capacitive touch screen using the ribbon cable directly to the Pi. Everything wet great during install and the LCD worked but I have no touch inputs. I went into console mode and enabled touchscreen and tried calibrating but nothing worked. Rebooting 50 times didn't work, doing the update through the terminal didn't work. At one point the touch screen worked as it would move the mouse cursor wherever I touched, but it would not select anything no matter how many times I taped the screen. I tried restarting the touchscreen from the config tool but that just made the touch screen stop working again. I know the touch screen works as I saw it working, but it just doesn't do anything now.

I am not picky about which issue gets fixed. I just need a Pi to work in my printer and it needs to be reliable. Please help :)

opy01

To add to the Pi 3 and touch issues, in Pi config tools I try to go to the /boot/firmware/config.txt and see if something is off but it takes me to /boot/congif.txt and tells me the file has moved. That definitely needs to be fixed.

Repetier

I can not say much about touch functionality - it depends on the hardware, linux driver. Normally you can modify it with different calibartion values and as soon as mouse is where you touch clicking should work. Just do not move while clicking. If pointer moves it is not counted as click.

With display issues and chromium try deleting the chromium cache.
killall -9 chromium
rm -r /home/pi/.cache/chromium
sudo reboot

that should behave like first startup for chromium. So anything that is disturbing chome should be fixed.

opy01

Ok I think this Pi 4 install is hosed. I tried what you said and after running the first command it said "chromium: no process found". I tried the update option in the raspi-config and it said "There was an error running option 8 Update". I tried running sudo apt upgrade from putty and it failed also.

As far as the Pi 3, I completely forgot there are waveshare configs for these. But again, the Pi confg tool does not point to the correct config.txt. I had to go in and sudo nano the correct path. But I did get touch working. Now I have to get the correct size set.

opy01

So I was messing around with the config and found that dtoverlay=vc4-fkms-v3d (note the f in fkms) worked but the overlay was massive and I only saw the left 2/3 of the screen during calibration even though the screen looked fine before calibration. After messing with it and rebooting 50 times for different reasons and then setting it back to dtoverlay=vc4-kms-v3d, the touch started working for no reason at all :/

I'll get my printer set up on this one now so I don't have to wipe my other Pi with the white screen.

Repetier

Thanks for the config hint. In deed not all path to config.txt were correct.