RossDv8 wrote: ↑
Wed Sep 25, 2019 1:56 am
Please report back if going back to stock CPU speeds solves the problem.
Reporting back !!
Hashed out the overclock settings and hashed out the GPU Memory split setting then unsharped the stock 1MB wallpaper file that failed before (temple.jpg) on the microSD. No probem.
Unsharped the 6MB file from the camera, that failed previously (on an SSD connected to a USB 3 port). No problem.
Boot time for the Pi was a lot slower after hashing out the overclock settings, actually hanging on boot several times. I had a quick look at the GPU memory split, and found it had defaulted to 76MB !! Changed that to 256MB, simply because it was the highest option showing in raspi-config. Boot time is normal again.
Project for today is to try each of the overclock settings out of curiosity to see what triggers the problem in GIMP. However, I am wondering if there is any advantage in overclocking, as I suspect 1750MHz 'might' be the tipping point. Either that or running the GPU at 600MHz.
We shall see..
In the mean time - I can't blame the Pi
!! U P D A T E !!
I checked using different overclock settings;
Hashed out ALL overclock settings - worked fine
ENABLED CPU at 2000Mhz - failed to boot
ENABLED CPU at 2000MHz AND Voltage at 4V - Booted, but GIMP unsharp failed
Changed CPU overclock to 1750MHz (left overvoltage at 4V) - GIMP unsharp failed
Reverted overclock settings to default (hashed out everything) - GIMP unsharp is working on 1MB and 6MB files on both Local microSD and External USB drives.
End of my config.txt is now looking like:
[Pi 4B Overclock]
In my case, (for now) the problem with GIMP rebooting the Pi 4 during some operations has been solved by removing the overclock settings from the /boot/config.txt file.
Until I find some other software problem, that means for me at least the Pi will work nicely as a Desktop Computer - EXCEPT for the 'apparent' lack of compatible printer drivers. I know I can print over the network, but I would like to print directly from the Pi.
For the moment I'll just continue using an Android phone I had lying around ( with the appropriate Android printing app) as a Bluetooth/WiFi Direct print server. It is clumsy, but it works for now and indeed makes the Pi usable as a Desktop computer for the moment.