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<JohnDoe_71Rus>
another tv and hdmi switch. There is color artefacts. When I select "settings" there is always a black screen. https://dropmefiles.com/h58MQ
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<clementp[m]>
megi did you test GPU opp table on Orange Pi 3? I got crash sometimes when GPU is at 756MHz but temp is still low <72°C
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<megi>
clementp[m]: I did not
<megi>
GPU also crashed for me from time to time
<megi>
but I didn't really investigate, I assumed the driver is just not very stable yet
<Werner>
Looks familiar. Try setting the gpu governour to uerspace and fix the min and max freq to the same value, whatever it is. This working well for me
<clementp[m]>
Werner: which board do you have ?
<Werner>
OrangePi One Plus
<Werner>
I cannot do heavy benchmark tests anyways since I do not have a proper heatsink on it, just a fan blowing some air against the SoC.
<clementp[m]>
Can you just check voltage of the vdd-gpu ?
<clementp[m]>
where cat /sys/class/regulator/regulator.X/name == vdd-gpu
<clementp[m]>
thank you
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<Werner>
Have to find out which of the 18 regulators for the gpu is
<clementp[m]>
you can do cat /sys/class/regulator/regulator.*/name
<Werner>
Okay it seems to be regulator.5 1800000.gpu-mali
<Werner>
900000 is microvolts
<clementp[m]>
if you set the GPU frequency to 756MHz
<clementp[m]>
does the regulator voltage change ?
<Werner>
Well now comes the odd part. It is already fixed to 756
<Werner>
756000000 cur_freq
<clementp[m]>
the regulator should be set to 1.040V for this frequency
<Werner>
Exactly
<clementp[m]>
So you're lucky that's it's working
<clementp[m]>
For me it works untile the SoC reach 72/75°C
<clementp[m]>
until*
<Werner>
Let me put a load on it. As for me I noticed crashes when putting a load to the board by compiling stuff. Not always though
<Werner>
The CPU is capped to 1488GHz to reduce the heat a bit.
<Werner>
*MHz
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<tuxd3v>
what version of uboot/atf are you using in orangepi one plus with 5.6.2 kernel?
<tuxd3v>
I can't boot my 5.6.2 kernel
<clementp[m]>
even @1.5GHz if you have heavy load. The temperature will rise to 80/85°C for board with passivce cooling
<tuxd3v>
and uboot gives me zero output
<clementp[m]>
and then the GPU will be not stable at this temperature with this voltage
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<clementp[m]>
I'm quite sure the crash/freeze is due to this
<Werner>
I guess this board will never be useful under heavy load without active cooling
<Werner>
tuxd3v, I have to dig through the sources to find these answers. You can always build yourself an Armbian image using the dev branch to get what I am actually running on.
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<clementp[m]>
Yes I agree, but that's not a reason to allow it to crash/freeze :)
<clementp[m]>
quick fix you can change the reg_dcdcc regulator-min-microvolt to 1040000
<clementp[m]>
Or maybe not as they are no cooling map on the GPU
<Werner>
I think I'd leave it for now as it is until I have proper cooling for it
<clementp[m]>
you can remove all the GPU OPP upper than 504MHz
<Werner>
Played one round supertuxkart. The temperature reached a max of 75°C. Quite low fps at full hd but it survived.
<Werner>
Unlocked CPU. Pushed temperature to 79° but still running without issues.
<Werner>
gpu is still at 900mV. Maybe this is actually a good value for the max frequency to run halfway stable?