Okay you know what? Waiting for a fix ain’t doing it for me. I think I’m gonna sideload Magisk and stick the value in the file myself.
Stay tuned to find out if I bricked my phone 
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Well, I’m ready to flash a patched bootloader, but I realized I need to backup my Signal installation and transfer my banking app credentials to another phone first, in case the phone gets wiped. I’m at work right now, I’ll do that when I’m back home.
In the meantime, someone on the CalyxOS Matrix channel advised me to open an issue in the CalyxOS tracker regarding the screen dimming issue. I have no idea why Calyx would want to fix a Fairphone bug, but after all, it doesn’t cost anything to try. We’ll see if the CalyxOS folks take pity on us poor Fairphone 4 users and pick up Fairphone’s slack. I’d be very surprised, but that would be quite slick
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Could you send a link to the issue? I’d like to subscribe to it, since I rather want to start using CalyxOS instead of this buggy stock software
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Sure thing:
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Today the problem escalated into stage 2 as It dimmed on me again after the initial dim. The first dimming isnt an issue for me as Im mainly indoors, but after stage 2 its like at the third of the brightness capacity (slider is at a 100). Happened while gaming but the game is like ten yrs old, so its not even warm. This honestly feels like a sabotage. No other company is offering the ethics and I hold that value so high I am willing to squint at the screen. I cant argue the ethics to people who ask about the phone though, until I know Im not being screwed with myself.
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As I said further above, ethics is not an excuse for sloppiness.
There is no logical connection between those two.
“Ethical” excuses “more expensive than comparable phones”, yes, but not this.
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I am not sure if someone mentioned it here already, but support told me they indentified the root cause of this bug and will include a fix in the next update!
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In licht or sunny conditions my screen fades to a very ‘dark’ mode. It then is hard to read the screen. Even though the brightness of my screen is toggled all the way to the brightest setting. I do not understand why my phone’s screen automatically turns to this dark shade by its self. Anyone have any tips as to solve this?
It’s a bug, see the thread above.
Apparently about to get fixed, according to the post just above yours.
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Hopefully. For months now the phone is basically unusable because of this issue and nothing is being done about it. It’s tedious.
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I disagree. It’s just slightly annoying and you can manage it with an app like quick cursor.
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Fine, it is slightly annoying for you. Got it. Guess what? That doesn’t help me the least. For me it is an absolute deal breaker, I am not using the phone because my eyes hurt looking at the dim display.
The phone comes with an option to adjust the brightness. Why did people, many years ago, come up with this great idea? Because there are people like you who like it dimmer, and people like me who do not. Your post is like saying “a shoe size of 17.5 is completely fine, tried it on my feet, no need to complain about it”.
And also wrong, no app is able to change the brightness beyond the 100% mark on my device. Hence, no app can “manage it”.
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When you’re on the highway, the map suddenly disappears and you miss your turn just because the dash is a bit hot, it’s a tad more than that.
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they did? I’ve got no news for my support ticket. Did they send you an answer to an open support ticket, or how did they tell you?
In any case, it’s great news, lets hope they actually get it fixed with the next update. Iirc, there hasn’t been an update this month yet, right? So that should come any day now?
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Right. Could come any month now… 
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Yes, I was in the process of figuring out if I could get a refund and after a couple of emails back and forward they replied that they found the root cause and that it will be fixed within 1-2 months!
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How can the option to use the thermal-engine.conf be set up?
Actually I don’t know the specific values because it depends on how it has been configured in the ROM or by the vendor (Qualcomm probably).
This is an example but it’s for a Xiaomi device, so I don’t know if it works.
[BATTERY_CHARGING_STL]
algo_type monitor
sampling 1000
sensor quiet-therm-usr
thresholds 36000 37000 38000 39000 40000 41000 42000 43000
thresholds_clr 35000 36000 37000 38000 39000 40000 41000 42000
actions battery battery battery battery battery battery battery battery
action_info 1 2 3 4 5 6 8 9
[LCD_MONITOR_STATE]
algo_type monitor
sampling 5000
sensor quiet-therm-usr
thresholds 60000
thresholds_clr 57000
actions lcd
action_info 3685
[CPU_HOTPLUG_MONITOR]
algo_type monitor
sampling 5000
sensor quiet-therm-usr
thresholds 61000
thresholds_clr 58000
actions hotplug_1+hotplug_2+hotplug_3+hotplug_4+hotplug_5+hotplug_6
action_info 1+1+1+1+1+1
[HIGH_TEMP_STATE]
algo_type monitor
sampling 5000
sensor quiet-therm-usr
thresholds 60000
thresholds_clr 57000
actions temp_state
action_info 4
Probably it’s the LCD_MONITOR_STATE that here has a treshold of 60.0C° and actions could be what it does when the treshold it’s reached.
But again, I don’t know what it does with actions lcd and action_info 3685.
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Neither did I get an answer. I’m on holiday at the beach now. Fph4 is useless in this bright sunshine. I regret every day to have bought this awful brik.
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