[KERNEL] [9.x] BlackScreen (for the Pro3 aka zl1, zl0, X727,X720,x722)

[Lethalben]

Well no, leeco would have to update it

Thanks for your response!

 

[Viper The Ripper]

Well no, leeco would have to update it

Hey @mosimchah , first of all thanks for you amazing work in AICP, BS Kernel and the whole android development here :good: . I've a related question, do you think it'd be possible to port 4.4/4.9 kernel from ZUK2 (snapdragon 820 device too) and boot it into other SD820 devices?

https://github.com/LineageOS/android_kernel_zuk_msm8996

Greetings!

 

[mosimchah]

Hey @mosimchah , first of all thanks for you amazing work in AICP, BS Kernel and the whole android development here :good: . I've a related question, do you think it'd be possible to port 4.4/4.9 kernel from ZUK2 (snapdragon 820 device too) and boot it into other SD820 devices?

https://github.com/LineageOS/android_kernel_zuk_msm8996

Greetings!

As I said before, we would need a newer bootloader, z2 has an Oreo bootloader, they weren't able to boot it at all with mm either until zuk updated it for them, glad you like my work

 

[Viper The Ripper]

As I said before, we would need a newer bootloader, z2 has an Oreo bootloader, they weren't able to boot it at all with mm either until zuk updated it for them, glad you like my work

Thank's it was clear , I was meaning "other SD820 devices" as op3/t (Updated to offical Android 9.x) e.g. just wondered if it was possible :silly: . We don't have any 4.4/4.9 kernel port running on our op3/t either, I remember in those old days it was a pain to port kernel 3.x to our beloved gts-5830, maybe it's not as easy as it seems to build a bootable kernel, but it would be great to have the 4.x enhancements :fingers-crossed: .

Thank for your time and keep

 

[TechDriver]

Is it possible to change default cpu scaling governor permanently and keep it even after unroot?
Example: interactive => conservative

 

[mosimchah]

Is it possible to change default cpu scaling governor permanently and keep it even after unroot?
Example: interactive => conservative

Only if you make your own init.d script or if you make your own rom build

 

[TechDriver]

Only if you make your own init.d script or if you make your own rom build

Made init.d script, placed it into /system/etc/init.d but it didn't work at boot. It worked only with Kernel Adiutor init.d emulator. How to make it work?

Script:

#!/system/bin/sh

# Set Scaling Governor

GOVERNORbig="conservativex"
GOVERNOR="lionfish"

echo $GOVERNOR > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
echo $GOVERNOR > /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor
echo $GOVERNORbig > /sys/devices/system/cpu/cpu2/cpufreq/scaling_governor
echo $GOVERNORbig > /sys/devices/system/cpu/cpu3/cpufreq/scaling_governor

 

[Igorferrare]

compatible with rom Resurrection Remix pie?

 

[Deleted member 7699229]

compatible with rom Resurrection Remix pie?

Wouldn't see why not. Kernel supports Pie 9.0

 

[beeduq]

The latest blackscreens OC 6.6.1 and 6.5 were capped to 1708MHz BIG and 1401MHz LITTLE. I've tried AICP and AOSiP both 9.0 Android. Tested with Kernel Auditor but can't get max them.
Oh, I'm at LEX722.

 

[mosimchah]

The latest blackscreens OC 6.6.1 and 6.5 were capped to 1708MHz BIG and 1401MHz LITTLE. I've tried AICP and AOSiP both 9.0 Android. Tested with Kernel Auditor but can't get max them.
Oh, I'm at LEX722.

Not a kernel issue, it's just throttling because your phone got too hot

 

[pitt93]

The latest blackscreens OC 6.6.1 and 6.5 were capped to 1708MHz BIG and 1401MHz LITTLE. I've tried AICP and AOSiP both 9.0 Android. Tested with Kernel Auditor but can't get max them.
Oh, I'm at LEX722.

Use freezer. It's thermal throttling

 

[beeduq]

Not a kernel issue, it's just throttling because your phone got too hot

After 20 minutes, it began to hit Max, so it is throttling. Earlier versions (Oreo) they start to use Max at the beginning, so I was surprised at first.

 

[twistyplain]

I'm wondering why the overclock on modern CPUs is so modest. I remember I had a huawei U8800 that had a stock frequency of 800Mhz but I could safely overclock it to 1.8Ghz. So why cant there be a safe overclock beyond a few mhz on modern SoC's?

Sent from my LeEco Le Pro3 using XDA Labs

 

[mosimchah]

I'm wondering why the overclock on modern CPUs is so modest. I remember I had a huawei U8800 that had a stock frequency of 800Mhz but I could safely overclock it to 1.8Ghz. So why cant there be a safe overclock beyond a few mhz on modern SoC's?

With the current overclock it heats up pretty fast and then has to throttle right away so the device doesn't get damaged, if it was overclocked even more it would heat up even faster and thus would throttle faster which would make the overclock effectively useless, blame leeco for a bad hardware design

 

[twistyplain]

With the current overclock it heats up pretty fast and then has to throttle right away so the device doesn't get damaged, if it was overclocked even more it would heat up even faster and thus would throttle faster which would make the overclock effectively useless, blame leeco for a bad hardware design

Yeah. I definitely blame Leeco for this poor thermal performance. The sd821 got a lot of praise for its ability to stay cool but that's definitely not true for the pro 3. My next project on this phone will be cracking it open and putting some premium thermal paste and see how much better it gets. This phone throttles way too soon and too hard.

Sent from my LeEco Le Pro3 using XDA Labs

 

[slgooding]

Yeah. I definitely blame Leeco for this poor thermal performance. The sd821 got a lot of praise for its ability to stay cool but that's definitely not true for the pro 3. My next project on this phone will be cracking it open and putting some premium thermal paste and see how much better it gets. This phone throttles way too soon and too hard.

Let us know the result!

 

[Redhawk2000]

Have a zl1 now with a busted screen. Using it just as a hotspot. Recommended kernel settings for max battery life just to handle that service?

 

[mosimchah]

Have a zl1 now with a busted screen. Using it just as a hotspot. Recommended kernel settings for max battery life just to handle that service?

I would start with seeing if it can work okay with the powersave CPU governor, that would be the best for battery life if you're only using the phone as a hotspot, if it needs more CPU power though I would go with the impulse governor, for the io scheduler go with noop, for the gpu governor I would use simple ondemand, and that's probably it

 

[orsonbear]

I have not tried yet (I suppose I can't manually change governor without root permissions, then I can't 'coz I can't use root due the "safety required" apps I use) but if I choose the embedded Power Saving mode the governor is automatically changed to another or is it always the default one? (on AICP 14)