[Kernel] [H990] D.O.T.S. v1.4 [01/04]

[hotcell]

Root Explorer: 00:07:18
LG File Manager: 00:04:46 (I don't believe LG's app uses Document Provider to copy files)
cp command 00:04:30 (not as fast as I expected but it implies LG File Manager doesn't use Android Storage either while other third-party developers must comply)

1. Well, maybe there are problems with Document Provider implementation or support for its v.7.0+ (I had to digg with TitaniumBackup Document Provider for Android 5.0+ as it has some problems to accept the backup directory on exFAT µSD for writing.

2. My related findings are that some apps on internal or external SDs have disabled Install button on external file managers while LG's own File Manager installs them alright.

 

[hotcell]

I too, have noticed increased battery drain with this kernel, but not in normal usage but in standby.
Before I would loose a few percentage of battery per night, now it's up to 15% per night.

I do not know if the kernel is to blame, only wanted to chime in, in case anyone else are affected.


Emil

About the same observations here. Maybe we have to switch CPU/GPU Governors from Kernel Adiutor?

 

[3mL]

About the same here. Maybe we have to switch CPU/GPU Governors from Kernel Adiutor?

Glad I'm not the only one. Looks about the same as my statistics as well.

Perhaps conservative would work better, if I remember I will change the governor before bed and report back in the morning.

 

[hotcell]

@Leicxan @jahlex
can we mimic noticeably better off-screen / battery idle time behaviour of previous kernel v1.2-u721, what settings from Kernel Adiutor should be set?
Is CPU Hotplug Apply on boot supported, which governor would be appropriate to switch off unused cores, like will zzmoove do that?

 

[xdav20]

@Leicxan @jahlex
can we mimic noticeably better off-screen / battery idle time behaviour of previous kernel v1.2-u721, what settings from Kernel Adiutor should be set?
Is CPU Hotplug Apply on boot supported, which governor would be appropriate to switch off unused cores, like will zzmoove do that?

Can I also add, after some thinking, the IO scheduler or whatever it is called has been set to "zen". This might be the source of my problem. Could we have it back to its factory setting and those who want a different settings then install a kernel profiler app to change the settings please?

 

[Redline]

Just wanted to chime in. I've had noticeably better battery with this Kernel probably as it's closer to stock, just with more ability to tweak. Aside from running all the usual battery saving things like a debloat, Greenify, etc. I'm also running ATK Profiles (Balanced Profile, these are the most stable undervolt profiles for the 820 that result in less power use overall) modified from the OnePlus with the SD820 on my V20 along with the Interactive/ElementalX governors and I'm only losing a few % overnight with the screen off. Some nights it's even only 1/2%. Have you looked at installing something like Wakelock Detector Free to see what's keeping your phone awake? Or restricting background wake requests using App Ops - Permission Manager from the play store?
With screen on straight, I push 6/7 hours at around 60% brightness, even only with my light underclock.

 

[3mL]

Just wanted to chime in. I've had noticeably better battery with this Kernel probably as it's closer to stock, just with more ability to tweak. Aside from running all the usual battery saving things like a debloat, Greenify, etc. I'm also running ATK Profiles (Balanced Profile, these are the most stable undervolt profiles for the 820 that result in less power use overall) modified from the OnePlus with the SD820 on my V20 along with the Interactive/ElementalX governors and I'm only losing a few % overnight with the screen off. Some nights it's even only 1/2%. Have you looked at installing something like Wakelock Detector Free to see what's keeping your phone awake? Or restricting background wake requests using App Ops - Permission Manager from the play store?
With screen on straight, I push 6/7 hours at around 60% brightness, even only with my light underclock.

I will look in to ATK Profiles, thank you.

I will attach a screenshot from Wakeblock.
Sorted by occurrences:


Sorted by run time:

 

[hotcell]

I've had noticeably better battery with this Kernel probably as it's closer to stock...

Correct me if I'm wrong but as I recall some of devs said 1.2u721-10g kernel was basically stock. And I had more or less the same app set then with consumption around 2-3% per night. I also using Greenify in both cases. What kernel you previously had?

 

[zhadj030]

I can report the same as above . Around 12%of the battery gone Through night 9 hours to be precise . 99% with the cpu is idle as the first 2 posts. And I have been running conservative cpu Governor. Also I don't seem to see greenify actually being useful . Still no updates that are compatible with exposed. Their last update bricked my phone good thing I always keep a backup before anything .

 

[jody2k]

I too, have noticed increased battery drain with this kernel, but not in normal usage but in standby.
Before I would loose a few percentage of battery per night, now it's up to 15% per night.

I do not know if the kernel is to blame, only wanted to chime in, in case anyone else are affected.


Emil

Agreed same here, needs to be bit optimized in future
On v0.1 about 6 to 7 %
Dots v1.0 about 12-15%
Tried switching several times between different versions Flashback to older kernel resolves the problem instantly you can also measure it % per hour

 

[zinou213]

Some Feature ideas

Have seen this thread https://xdaforums.com/v20/development/h918-h910-us996-ucl-mk2000-kernel-t3708330

Features:

KCAL - Screen panel control.
Adreno Idler - Battery savings.
Remove temperature polling - Battery savings.
Reduce DSI status check - Battery savings.
Disable software CRC checking of SD Card - More performance.
Fixed USB erratic behavior with some chargers.
Added TCP drivers & I/O schedulers.
Fix by emdroidle for eng-bootloader (US996UCL & H910).
Static screen fixed (US996UCL & H910).
LZ4 compression.
RCTD removed.

It will be great if you port some of that features, so they can also fix battery draining and SD-CARD issues, try to contact the developper at first he surely can helps you and saves you some time.

 

[jahlex]

For those who are unhappy with battery life, this all about governors / wakelocks / background apps.

If you want to go back to the governors used in the first version of Leicxan : CPU was "performance" (which IMO will cause more battery drain, but make your opinion), IO sched was "cfq". The good choice for governors depends of every user/usage. You have everything you need to make your choice here : https://xdaforums.com/general/general/ref-to-date-guide-cpu-governors-o-t3048957

About wakelocks, you can use apps like BetterBatteryStats to see what's going on. You can also disable some wakelocks and see if it changes a thing.

I will check the battery drain at night on my phone, but I did not notice anything special for now.

Also v1.1 available on the first post includes the CPU frequency hard limit mentioned by @Leicxan. You can give it a try and tell us if you find it better.

 

[Redline]

Have seen this thread https://xdaforums.com/v20/development/h918-h910-us996-ucl-mk2000-kernel-t3708330

Features:

KCAL - Screen panel control.
Adreno Idler - Battery savings.
Remove temperature polling - Battery savings.
Reduce DSI status check - Battery savings.
Disable software CRC checking of SD Card - More performance.
Fixed USB erratic behavior with some chargers.
Added TCP drivers & I/O schedulers.
Fix by emdroidle for eng-bootloader (US996UCL & H910).
Static screen fixed (US996UCL & H910).
LZ4 compression.
RCTD removed.

It will be great if you port some of that features, so they can also fix battery draining and SD-CARD issues, try to contact the developper at first he surely can helps you and saves you some time.

Already have KCAL, Adreno Idler, various battery savings, plenty of TCP & I/O Schedulers and drivers, RCTD removed, and the US996 & H910 fixes don't apply here as this is a H990-based kernel. I've also never had any bootloader/static screen problems, most of which coming from not following very specific instructions specified by the OP of their respectives. @jahlex posted above, things people can do to try to go back to when they were apparently losing less battery. SD-Card issues, as you'd have seen if you'd read throughout this thread, have been deemed to be almost card/OS specific (although, I'm currently testing 2 variants of v1.1 with different exFAT implementations to see if any issues or performance problems arise). It's almost like you didn't read the OP.
Sidenote: Running v1.1 now, will report back in a day or so

 

[faeterov]

For those who are unhappy with battery life, this all about governors / wakelocks / background apps.

If you want to go back to the governors used in the first version of Leicxan : CPU was "performance" (which IMO will cause more battery drain, but make your opinion), IO sched was "cfq". The good choice for governors depends of every user/usage. You have everything you need to make your choice here : https://xdaforums.com/general/general/ref-to-date-guide-cpu-governors-o-t3048957

About wakelocks, you can use apps like BetterBatteryStats to see what's going on. You can also disable some wakelocks and see if it changes a thing.

I will check the battery drain at night on my phone, but I did not notice anything special for now.

Also v1.1 available on the first post includes the CPU frequency hard limit mentioned by @Leicxan. You can give it a try and tell us if you find it better.

Screen rotation is buggy with the new kernel.

 

[kersian]

Does the hard limit affect AKT profiles?

Sent from my LG-H990 using Tapatalk

 

[thirdzcee]

So far so good... Only issue encountered was 1st boot, after a while everything became laggy, turned out all cores where switched off except for cpu0, havent been able to reproduce since

 

[faeterov]

For those who are unhappy with battery life, this all about governors / wakelocks / background apps.

If you want to go back to the governors used in the first version of Leicxan : CPU was "performance" (which IMO will cause more battery drain, but make your opinion), IO sched was "cfq". The good choice for governors depends of every user/usage. You have everything you need to make your choice here : https://xdaforums.com/general/general/ref-to-date-guide-cpu-governors-o-t3048957

About wakelocks, you can use apps like BetterBatteryStats to see what's going on. You can also disable some wakelocks and see if it changes a thing.

I will check the battery drain at night on my phone, but I did not notice anything special for now.

Also v1.1 available on the first post includes the CPU frequency hard limit mentioned by @Leicxan. You can give it a try and tell us if you find it better.

So far so good... Only issue encountered was 1st boot, after a while everything became laggy, turned out all cores where switched off except for cpu0, havent been able to reproduce since

How is your screen rotation working?

 

[Redline]

How is your screen rotation working?

Personally working fine for me. Always has, at least since 1.0 release.

 

[faeterov]

Personally working fine for me. Always has, at least since 1.0 release.

Mine was also working on 1.0, but with the new one its stuck.

If I open a game that plays in landscape mode it will stay that way even if I get out of the game. Only if I press de sleep/power button, the screen goes black, and press again the button, the screen will rotateto normal setup.

I've double checked that rotation is enabled.

 

[thirdzcee]

How is your screen rotation working?

No problems with rotation either... so far so good.. only thing i need to left for me is to checck if hdmi out via usb c works. Got any mods or tweaks that might be causing it???