Develop Bugs

[Q] MHL jerky framerates?

Hello,
I have gotten this MHL adapter for my Note 2 about 2 weeks ago and it works decently. The problem I have noticed is that when I play GTA 3 or GTA Vice City is that the framerates seem a bit jerky to me. Im not sure if its just me or if its the mhl or if anyone else has this problem. Is there anything I can do to fix it?
http://www.amazon.com/gp/product/B009MJ58OI/ref=oh_details_o02_s00_i00

Dear X-dude,
Same here...
No problem with videos or other apps but games have less framerates when using mhl... I am not satisfied with the performance of game playing using mhl and sixaxis controller on TV Screen... Couldnt find a solution till now... I had same problem with Note1 also...
Kind regards...
Sent from my Amiga Note

MHL is not 'up to par' when playing video games, the fps just can't keep up. Playing videos though will work excellent! I use my N2 all the time to stream and play videos and music on my HDTV, looks and sounds amazing! Video games...not so good....

its not the MHL that is the problem.
the problem is the fact that the device is running in mirror mode. if you're running the TV at 720p as well as the phone at 720p, that means that the GPU now has to render twice as many pixels (ie. 1843200 pixels instead of 921600 pixels). it only gets worse if you run 1080p as it will have to render a little over three times as many pixels. doing that is far too demanding for our overclocked mali400 GPU, which is one of the reasons why it lags.
basically, the only device available at the moment that would have reasonable framerates in mirror mode based on GPU power alone would be the ipad 4th gen. i personally dont like ipads, but hardware wise, they do have a beefy GPU. the adreno 320 can keep up well enough, but isnt quite as quick as the powervr chip.
the malit604 might be able to do it if samsung can optimise the driver if they use it in the s4 next year, but at the moment, the performance of the mali 604 isnt much faster than the adreno 320.

Souai said:
sigh... its not the MHL that is the problem.
the problem is the fact that the device is running in mirror mode. if you're running the TV at 720p as well as the phone at 720p, that means that the GPU now has to render twice as many pixels (ie. 1843200 pixels instead of 921600 pixels). it only gets worse if you run 1080p as it will have to render a little over three times as many pixels. doing that is far too demanding for our overclocked mali400 GPU, which is one of the reasons why it lags.
basically, the only device available at the moment that would have reasonable framerates in mirror mode based on GPU power alone would be the ipad 4th gen. i personally dont like ipads, but hardware wise, they do have a beefy GPU. the adreno 320 can keep up well enough, but isnt quite as quick as the powervr chip.
the malit604 might be able to do it if samsung can optimise the driver if they use it in the s4 next year, but at the moment, the performance of the mali 604 isnt much faster than the adreno 320.
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That makes sense. Glad it wasn't just me. Thanks!

Souai said:
its not the MHL that is the problem.
the problem is the fact that the device is running in mirror mode. if you're running the TV at 720p as well as the phone at 720p, that means that the GPU now has to render twice as many pixels (ie. 1843200 pixels instead of 921600 pixels). it only gets worse if you run 1080p as it will have to render a little over three times as many pixels. doing that is far too demanding for our overclocked mali400 GPU, which is one of the reasons why it lags.
basically, the only device available at the moment that would have reasonable framerates in mirror mode based on GPU power alone would be the ipad 4th gen. i personally dont like ipads, but hardware wise, they do have a beefy GPU. the adreno 320 can keep up well enough, but isnt quite as quick as the powervr chip.
the malit604 might be able to do it if samsung can optimise the driver if they use it in the s4 next year, but at the moment, the performance of the mali 604 isnt much faster than the adreno 320.
Click to expand...
Click to collapse
That doesn't make any sense.
Mirroring in that case = Output twice what GPU rendered once. Mirroring isn't involving any extra work to GPU, (not sure about 1080p output, but i guess that all rendered in 1080p instead of 720p then downscales to fit the screen of device, performance-wise its only a tiny amount worse than having 1080p screen on device). But any output (and MHL is included) has latency, when you output videos it is not noticeably because you don't interact with videos, but when playing dynamic game you'll start to notice lag between interaction and game react to it.
It is only applicable to Mirror output, extended screen surely will take part of GPU perfomance, but not half of that - it is depending on what you doing. 3D games is involving much more computing than several layers of 2D in android interface or media player.
Need some technically adequate investigation on FPS drop and MHL latency

mgrviper said:
That doesn't make any sense.
Mirroring in that case = Output twice what GPU rendered once. Mirroring isn't involving any extra work to GPU, (not sure about 1080p output, but i guess that all rendered in 1080p instead of 720p then downscales to fit the screen of device, performance-wise its only a tiny amount worse than having 1080p screen on device). But any output (and MHL is included) has latency, when you output videos it is not noticeably because you don't interact with videos, but when playing dynamic game you'll start to notice lag between interaction and game react to it.
It is only applicable to Mirror output, extended screen surely will take part of GPU perfomance, but not half of that - it is depending on what you doing. 3D games is involving much more computing than several layers of 2D in android interface or media player.
Need some technically adequate investigation on FPS drop and MHL latency
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Click to collapse
Interesting. So there isnt much to do then to increase framerates on games?

Not sure where I read this at, but I was sure to have came across someone saying that the 1080p output is only at 30hz.

xartic12 said:
Not sure where I read this at, but I was sure to have came across someone saying that the 1080p output is only at 30hz.
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I also heard something about that and does the 30hz cause dropped frames? Also im pretty sure my mhl outputs at 1080i and not 1080p which makes a difference?

1080i is the culprit.
GNoteII

mgrviper said:
That doesn't make any sense.
Mirroring in that case = Output twice what GPU rendeWhenred once. Mirroring isn't involving any extra work to GPU, (not sure about 1080p output, but i guess that all rendered in 1080p instead of 720p then downscales to fit the screen of device, performance-wise its only a tiny amount worse than having 1080p screen on device). But any output (and MHL is included) has latency, when you output videos it is not noticeably because you don't interact with videos, but when playing dynamic game you'll start to notice lag between interaction and game react to it.
It is only applicable to Mirror output, extended screen surely will take part of GPU perfomance, but not half of that - it is depending on what you doing. 3D games is involving much more computing than several layers of 2D in android interface or media player.
Need some technically adequate investigation on FPS drop and MHL latency
Click to expand...
Click to collapse
Souai is right. If you would like a demonstration, do the following. Install the Electopia game/benchmark. When you start the app you will be asked if you want to run it in WVGA resolution or full screen. Try WVGA first. On the next screen choose 'benchmark' mode. Let it run then note what FPS you scored. Next run the benchmark again in full screen mode and note the (lower) FPS. Next, plug your phone into your tv using MHL and run both benchmarks again and note the lower FPS scores.....see? When plugged into a tv via MHL it is having to work much harder.

Ouzo said:
Souai is right. If you would like a demonstration, do the following. Install the Electopia game/benchmark. When you start the app you will be asked if you want to run it in WVGA resolution or full screen. Try WVGA first. On the next screen choose 'benchmark' mode. Let it run then note what FPS you scored. Next run the benchmark again in full screen mode and note the (lower) FPS. Next, plug your phone into your tv using MHL and run both benchmarks again and note the lower FPS scores.....see? When plugged into a tv via MHL it is having to work much harder.
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Interesting indeed. I will try this soon.

Is there a way to fix poor gaming performance? Low fps

A few games I've been playing are laggy and give me much lower FPS than on my old Note 2. I chalk this up to the device rendering the game at 2k resolution, which is too much for this hardware. Is there anyway to run it at a lower resolution?
Thanks

Which games?

Change d855 resolution

Hi there. I have tweaked my phone for extra battery life (custom ROM, kernel, undervolting and multicore power saving) and I would also like to improve performance further more without reducing battery life.
The g3 has a 2560x1440 display or something ridiculously high like that. Its practically the double of 1080p. My PC monitor is 24 inch and has a 1080p resolution. Even though without antialising I can see pixels, its still pretty good. In my opinion, 2560x1440 is way too high for a 5.5 inch screen.
Since 2560x1440 is the double of 1920x1080, reducing the resolution should greatly improve performance. http://www.phonearena.com/news/We-c...and-negligible-battery-life-increases_id65982
However, resolution changer pro and NOMone resolution changer either do not work or cause a bootloot on blisspop 3.6.
Does anyone know of any similar ROMs or alternative apps that will work with blisspop?
Thanks!
Sent from my LG-D855 using XDA Free mobile app

tristan6100 said:
Hi there. I have tweaked my phone for extra battery life (custom ROM, kernel, undervolting and multicore power saving) and I would also like to improve performance further more without reducing battery life.
The g3 has a 2560x1440 display or something ridiculously high like that. Its practically the double of 1080p. My PC monitor is 24 inch and has a 1080p resolution. Even though without antialising I can see pixels, its still pretty good. In my opinion, 2560x1440 is way too high for a 5.5 inch screen.
Since 2560x1440 is the double of 1920x1080, reducing the resolution should greatly improve performance. http://www.phonearena.com/news/We-c...and-negligible-battery-life-increases_id65982
However, resolution changer pro and NOMone resolution changer either do not work or cause a bootloot on blisspop 3.6.
Does anyone know of any similar ROMs or alternative apps that will work with blisspop?
Thanks!
Sent from my LG-D855 using XDA Free mobile app
Click to expand...
Click to collapse
Decreasing the resolution will certainly increase performance and is also helping me to get the rid of the heating issues that I have faced on my G3. Resolution Changer Power Menu would help to decrease resolution efficiently. But I am not sure how much it would work with blisspop .

@tristan6100 hi. you can change the resolution manually using terminal:
su
wm size your_size
wm density your_density
if something fails you can try:
su
wm size reset
wm density reset

Will lowering resolution increase battery life?

The settings allow you to lower the resolution. I lowered the resolution to 2340 x 1080 and I don't really notice anything different.... Would this increase battery life? If so, how much?

It will definitely increase battery life.
How much will it increase depends on your usage and your apps installed. It should at max give you 10% increase.

id3alistic said:
Would this increase battery life? If so, how much?
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Click to collapse
It is well and widely known that lowering resolution won't give you increased battery life. At all

Ah thanks. I come from an xperia z3 so been using FHD screens only. I was interested in the XZ1 compact back then and one of the key points from reviewers is that the lower screen resolution(720p) saved a lot more battery vs the XZ1 at 1080p.

id3alistic said:
Ah thanks. I come from an xperia z3 so been using FHD screens only. I was interested in the XZ1 compact back then and one of the key points from reviewers is that the lower screen resolution(720p) saved a lot more battery vs the XZ1 at 1080p.
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Click to collapse
I think the misconception is lowering the screen resolution vs a device that maxes out at a lower resolution. Maybe it makes a difference for OLEDs...but for LCD screens, all if the pixels are still illuminated, so there's not much difference there.

AarSyl said:
I think the misconception is lowering the screen resolution vs a device that maxes out at a lower resolution. Maybe it makes a difference for OLEDs...but for LCD screens, all if the pixels are still illuminated, so there's not much difference there.
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Sounds convincing and makes sense. I wonder why they'd allow it on this device though?

20degrees said:
Sounds convincing and makes sense. I wonder why they'd allow it on this device though?
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Click to collapse
Because Samsung's can do it.
Nothing but hype for the misinformed and ill-advised.
[Dopey voice]"Bruh...look what my phone can do to save battery life. Can yours?" [/Dopey voice]

Using lower resolutions use less power bc they use less gpu computational power. Youre not saving anything really from the screen itself. Think of it this way does your computer/laptop use more power running resource intensive applications or running idle?

id3alistic said:
Ah thanks. I come from an xperia z3 so been using FHD screens only. I was interested in the XZ1 compact back then and one of the key points from reviewers is that the lower screen resolution(720p) saved a lot more battery vs the XZ1 at 1080p.
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Click to collapse
As one said here it's from misinformed people.
id3alistic said:
XZ1 compact back then and one of the key points from reviewers is that the lower screen resolution(720p) saved.
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Click to collapse
Not that the resolution that saved power. If Sony could put their 3840x2160 resolution display into 4.3" size of XZ1 compact it still would run longer on battery than any 6.5" sized phone from similar battery even with 720p display. Because it's sheer size of screen that saves battery, not the resolution. 4.3" vs 6.5" is hefty difference. One needs more light to make 6.5" display emit light than to make 4.3" one hence one need more power.
Think about it this way, if resolution would matter then XZ Premium and XZ2 Premium would drain their batteries in a matter of minutes with 3840x2160 res displays. Right? But they work almost as long as say Galaxy S9 Plus or Note 8.
---------- Post added at 07:58 PM ---------- Previous post was at 07:52 PM ----------
Nirrik said:
Think of it this way does your computer/laptop use more power running resource intensive applications or running idle?
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Click to collapse
It not works like that. When your phone renders picture in 720p or 1080p it doesn't do it sitting idle. It still consumes power when rendering picture 60 times a sec. And its GPU still runs at 200MHz, maybe it needs like 230 or 250MHz for rendering picture in 1440p but is 250MHz vs 200 MHz a huge difference? I doubt it
It's not like 1440 picture rendering needs full GPU power but 720p or 1080p can be powered by idle GPU. Never was, never will. Ask devs in http://forum.xda-developers.com/android/software-hacking if in doubt

In reality ability to pick your resolution for battery life is a gimmick and doesn't really do anything.
There were no proofs that phones live longer from same charge when it's resolution lowered. Maybe it works for constant gaming, like playing games in 720p on a 1440p screen will bump battery life. But in other cases no

Taking only power consumption from the display alone, there is no different between HD, FHQ, QHD. The different is that if a game or any apps(or even system app itselfs) runs at HD, it will need less graphic computational power than running at QHD (once again, its not about the drainage from the display, its from GPU).

romeokk said:
The different is that if a game or any apps(or even system app itselfs) runs at HD, it will need less graphic computational power than running at QHD (once again, its not about the drainage from the display, its from GPU).
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Click to collapse
in reality, it's bull****. learn how GPU works. Try to ask Google devs if you don't know. They do habitate here, at XDA
It's not like it renders something and then goes to sleep turning cores off as CPU does. Instead GPU renders frame 60 times a sec and uses 203MHz either your resolution is 720p or 1080p. It can't lower frequency to 100MHz magically because it's not designed that way. So it consumes as much power working at 203MHz either rendering 720p frames or rendering 1080p frames.
Hence no battery economy achieved

Billy Madison said:
in reality, it's bull****. learn how GPU works. Try to ask Google devs if you don't know. They do habitate here, at XDA
It's not like it renders something and then goes to sleep turning cores off as CPU does. Instead GPU renders frame 60 times a sec and uses 203MHz either your resolution is 720p or 1080p. It can't lower frequency to 100MHz magically because it's not designed that way. So it consumes as much power working at 203MHz either rendering 720p frames or rendering 1080p frames.
Hence no battery economy achieved
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Click to collapse
See this:
https://www.google.co.th/url?sa=t&s...FjADegQIBRAB&usg=AOvVaw3qEXVbk4h0XmHcDhhRUR1P

LG G7 Screen refresh rate

Can the LG G7 force the screen refresh rate to 75Hz or higher

I do wish it has higher refresh rate display, but unfortunately, upon the longer the system standby timer, the the less UI smoothness it will be. Despite having a 60Hz display, there are some hiccups, dropping out frame rates. The annoying resolution is to restart the LG G7 ThinQ every 2 or 3 days to feel smoother & faster. I wished the higher refresh rates would solve the problem, really it does not solve the problem. In 2020, a midrange SD 765 device with 120Hz display definitely has seen UI hiccups or stuttering. I surely blame LG for not providing us unlocked bootloaders, so we can enjoy custom kernels, which helps us change the CPU governors etc, which would greatly improves LG G7's overall performance even with custom refresh rates, i.e Google Pixel 3 or the One Plus 6 has smoother performance than the G7, despite all uses 60Hz displays. I surely will switch to any device with 2K resolution bearing 120Hz displays, eagerly waiting for the One Plus 8 Pro.