Help with SKU Z-0017 touchscreen

obero

Igor!
Thank you for dealing with the problem, Unfortunately I don't know where the kernel log is located, please specify where you are located.

obero

I would have another problem. The 0.6.0 is on my machine with a good quality 32Gb SD card with an original raspi screen. The screen resolution is 800x480, the quality is very bad. I enclosed 2 pictures that you can see well.
It freezes during operation and needs to be restarted.
What is the solution?

Martin

Hi @obero, freezing of RPI with display 800x480 is discussed here: #574

obero

@Martin , Thank you for your help, I will try what you have suggested, but the bigger problem is the quality of the image and its resolution. Sometimes the picture is uncomfortable, very confusing. There is definitely some solution.

kknott

Also see about overclocking your rig, helped a ton with mine when running the wyzeCam app

sgrayban

You can't OC the PI 3B or 3 B+

obero

Is there no solution for improving the screen resolution?

sgrayban

I guess not

kknott

According to this post Igor said it’s possible using the same config.txt as raspbian. I’m pretty sure it’s functional because I noticed a difference straight away. Also if OC weren’t possible then why have the initial_turbo = X setting in the default Emteria config. Perhaps I’ll try to find an app that will reports the processor and memory stats and get back to you on this one

#476

kknott

Confirmed that overclocking does affect performance and the changes are reflected across a number of apps like kernel auditor

sgrayban

And doing OCing will also burn out the board a lot faster.

sgrayban

https://www.raspberrypi.org/forums/viewtopic.php?t=208626

sgrayban

@kknott said:
Confirmed that overclocking does affect performance and the changes are reflected across a number of apps like kernel auditor

I think everyone is confused with the word "overclock" and "turbo".

Overclocking is using settings like this:

arm_freq=1300
over_voltage=5
gpu_freq=500
sdram_freq=500
total_mem=1024
gpu_mem=64

What people here call overclocking is NOT overclocking.

initial_turbo is only a burst of speed at boot time set at X seconds. This is NOT overclocking.

Sources:
https://www.raspberrypi.org/forums/viewtopic.php?t=192323
https://www.raspberrypi.org/documentation/configuration/config-txt/overclocking.md

sgrayban

FYI - Also if you are using a 3B or 3B+ you won't see much difference and the people at Raspberry suggest not doing it as their is a possibility of at least a dead board and at worse causing a fire.

And this software isn't meant to be used as a gaming or other high usage app. Be warned !!

kknott

Yes agreed, you don't want to overclock if you're worried that you'll fry the board. All boards are slightly different AND I have a heatsink and cooling fan attached to my chip:

Here are the settings I use for a stable overclock with Emteria.OS

arm_freq=1400
core_freq=500
gpu_freq=560
arm_freq_min=900
core_freq_min=325
over_voltage=6
sdram_freq=650
over_voltage_sdram=3
sdram_schmoo=0x02000020
dtparam=sd_overclock=83
temp_soft_limit=68
initial_turbo=60

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