All,
I was pretty curious to try the new screen tech since the launch event, today i got the device, enabled frame rate monitor on developer settings to see the LTPO in action, contrary to what they said on launch event the screen switches back and forth only between 60 and 120hz , 120hz during scrolling , 60hz when the screen is static without any input. It doesn't go all the way as low as 11hz
Wondering is this the right way of implementation , members please share your findings or information related to LTPO here to discuss upon
bala_gamer said:
All,
I was pretty curious to try the new screen tech since the launch event, today i got the device, enabled frame rate monitor on developer settings to see the LTPO in action, contrary to what they said on launch event the screen switches back and forth only between 60 and 120hz , 120hz during scrolling , 60hz when the screen is static without any input. It doesn't go all the way as low as 11hz
Wondering is this the right way of implementation , members please share your findings or information related to LTPO here to discuss upon
Click to expand...
Click to collapse
Give this a read - can't remember exactly what was said, maybe a limitation of the developer settings and not the phone
Samsung's Note20 Ultra Variable Refresh Rate Display Explained
www.anandtech.com
mtm1401 said:
Give this a read - can't remember exactly what was said, maybe a limitation of the developer settings and not the phone
Samsung's Note20 Ultra Variable Refresh Rate Display Explained
www.anandtech.com
Click to expand...
Click to collapse
read them as soon as andrei published it, would love to see his deep dive into the new panel in s21 and see what benefits it brings to the equation
bala_gamer said:
read them as soon as andrei published it, would love to see his deep dive into the new panel in s21 and see what benefits it brings to the equation
Click to expand...
Click to collapse
Ah fair enough, he's comparisons of the two models are always worth reading! I did find the bit I was referring to if that helps. Basically the OS can't recognise the lower refresh rate but they are there.
'One problem (from our perspective) with this LFD mechanism is that it is seemingly completely transparent to user-space, so there’s no good way to verify that it’s active or working - the OS simply states that you’re either in the 120Hz or 60Hz VRR modes, however with LFD on top the actual refresh rate can be different. One way to verify this externally is simply to measure the end-result that the new panel technology is meant to bring to the user: lower power consumption. It’s also here that we encounter some of the quirks in Samsung’s implementation.'
Will be interesting to see if the adaptive rate works in lower light unlike the note!
mtm1401 said:
Ah fair enough, he's comparisons of the two models are always worth reading! I did find the bit I was referring to if that helps. Basically the OS can't recognise the lower refresh rate but they are there.
'One problem (from our perspective) with this LFD mechanism is that it is seemingly completely transparent to user-space, so there’s no good way to verify that it’s active or working - the OS simply states that you’re either in the 120Hz or 60Hz VRR modes, however with LFD on top the actual refresh rate can be different. One way to verify this externally is simply to measure the end-result that the new panel technology is meant to bring to the user: lower power consumption. It’s also here that we encounter some of the quirks in Samsung’s implementation.'
Click to expand...
Click to collapse
That's the crux, whether it works or not we are limited to either 60 or 120hz on os level. Hope there is a way where this can be monitored more precisely via some workaround
This app seems to report (and limit) refresh rates other than 60 and 120hz, but I don't know how if it's not exposed by the OS.
[App]Galaxy Max Hz (Refresh Rate Mods, Screen-off Mods, QS Tiles, Tasker Support and More)
About this app: Refresh Rate Mods Change default refresh rates - Easily change the overall refresh rate settings of devices supporting multiple refresh rates. - Set supported mid refresh rates as the maximum refresh rate limit for battery...
forum.xda-developers.com
dscline said:
This app seems to report (and limit) refresh rates other than 60 and 120hz, but I don't know how if it's not exposed by the OS.
[App]Galaxy Max Hz (Refresh Rate Mods, Screen-off Mods, QS Tiles, Tasker Support and More)
About this app: Refresh Rate Mods Change default refresh rates - Easily change the overall refresh rate settings of devices supporting multiple refresh rates. - Set supported mid refresh rates as the maximum refresh rate limit for battery...
forum.xda-developers.com
Click to expand...
Click to collapse
Those refresh rates (e.g. 48hz and 96hz on Note 20 ultra) are actually exposed on OS level. If my understanding is right on the way that current android system works, S21 ultra implementation is probably the same to note 20 ultra with the addition of10hz as the lowest in the predefined set of refresh rates.
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About this app:
Refresh Rate Mods
Change default refresh rates
-Easily change the overall refresh rate settings of devices supporting multiple refresh rates.
-Set supported mid refresh rates as the maximum refresh rate limit for battery savings (e.g. 96hz instead of 120Hz).
-Quick settings shortcut
-tasker plugin support.
Motion smoothness mode switcher(Normal, Adaptive or High)***
-Set you device motion smoothness mode to stationary refresh rates (high mode) for better smoothness if so desired on Samsung devices with native Adaptive motion smoothness with a little trade-off to the battery.
-Apply adaptive mod on device that don't natively support adaptive mode [premium]
-Tasker plugin support.
Per-app refresh rate settings:
Set different refresh rate settings for every app either adaptive or fixed(stationary) [premium].
Motion smoothness on power saving mode ***
-GMH will apply a workaround to bypass 60Hz limitation on Power Saving Mode (PSM) on supported Samsung smartphones.
-Automatically apply workaround when PSM is enabled [premium]
-Note: It's reported that this workaround is blocked in OneUi5.0 on S21 Ultra. Extra steps now required. Please check here and here
Screen-off Mods:
Force to Lowest Hz: Force the lowest refresh rate on screen-off or Always-On Display(AOD). This overrides Samsung's strange stock behavior which sets the refresh rate to the highest on screen off (update: it is now at 60hz since OneUI3.0) to improve standby power consumption a bit.
-Tasker plugin support
Auto apply power saving mode during screen-off (after ~ 10 secs)***
Auto disable Autosync***
Quick-doze mod
-Quickly enter doze mode during screen-off that can not be interrupted by motion [premium].***
-Tasker plugin support
Auto SENSORS OFF (experimental non-root workaround)
-Device sensors will automatically turn off while screen is off until the device is unlocked to help minimize battery-draining motion-triggered wakelocks while device is not being used.
-Tasker plug-in support
- Supports up to OneUI4.* only
Others
Battery protection mod (Experimental)
-Option to set maximum charge to 86%-95%(for OneUI4+)[premium]
Quick resolution switcher
-Easily switch to any supported resolutions using the included quick setting tile***
-Tasker plugin support
Customizable refresh rate monitor
-Use statusbar or overlay which you can place anywhere on screen.
-Tasker plugin support.
Net speed statusbar indicator
OneUI inspired UI. Dynamic theme and Icon. Manual language selection
Note: The premium license is on a per device basis (not per user).
***these marked features require a one-time ADB procedure (this is not root)
Galaxy Max Hz background service is highly optimized. Background battery usage p is very negligible .
Info:
This app targets older android sdk in order to control refresh rates without ADB setup or root. Just tap OK the dialog that says "This app was built for an older version of Android...." when opened for the first time. If OK button is not visible, just tap the blank space on the lowest portion of the dialog.
If google play protect will prompt during install that the app is built for older version of android and doesn't include the latest privacy protections, you can ignore it and proceed to the installation. For privacy related concern, please refer to FAQ No. 3.
Download
v8.0.0
Changelogs
Github wiki
Localization/Translations Contributors
Italian: @Orlaf
German:devj3ns, drbeat
Russian: @a43
Swedish:Steffe2
Turkish: osmanakar312
Greek: Nick
Spanish: @Sebastiansm
Czech: @Chrono Leggionaire
Simplified Chinese: @xiaolu7233123
French: @Jaxom84
Polish: @Pichulec
If you want to contribute on translations, please send me a message
If you want to get GMH Premium features and/or support GMH development but paypal is not available in your place, you can use Google Play Store.
Just download GMH Donation app from Google Play Store.
Note: The price might be slightly higher due to the relatively higher tax imposed on play store.
Do you know if it works on s21 devices yet?
elliwigy said:
Do you know if it works on s21 devices yet?
Click to expand...
Click to collapse
I included this note in OP. It should work since these phones use the same display tech as the Note 20 Ultra.
tribalfs said:
...
Note: Note yet actually tested on Galaxy S21/S21+/S21Ultra but this should work out of the box.
...
Click to expand...
Click to collapse
No worries.. just thought maybe u got it early haha
It works on my S21. Although I can't tell if it forces 120hz or not. Some apps are still stuck on 60hz but I figure that's due to their code. Apps that support 120hz already have 120hz whether this app is installed or not. The refresh rate monitor works fine. The thing that overrides the idle refresh rate behavior does not work.
it does work when you change to hz but forcing it to stay at 120hz it just wont do it. i did the adb setup .
Works on my Exynos S21 Ultra
RearMisser said:
It works on my S21. Although I can't tell if it forces 120hz or not. Some apps are still stuck on 60hz but I figure that's due to their code. Apps that support 120hz already have 120hz whether this app is installed or not. The refresh rate monitor works fine. The thing that overrides the idle refresh rate behavior does not work.
Click to expand...
Click to collapse
The override is for the screen is off. Turn off for atleast 10 seconds to have it read.
saifullah90 said:
it does work when you change to hz but forcing it to stay at 120hz it just wont do it. i did the adb setup .
Click to expand...
Click to collapse
Does it set the motion smoothness setting to High in your settings app? There maybe changes in behavior. I'll include a fix for this in the next update.
Samsung says 10-120Hz?! App says 48-120Hz... why?
tribalfs said:
Does it set the motion smoothness setting to High in your settings app? There maybe changes in behavior. I'll include a fix for this in the next update.
Click to expand...
Click to collapse
Yes it does. Also setting it to 96hz works. I can tell with my eye and I also have an FPS counter installed for a game that does 120hz. It gets locked at 96fps.
tribalfs said:
Does it set the motion smoothness setting to High in your settings app? There maybe changes in behavior. I'll include a fix for this in the next update.
Click to expand...
Click to collapse
Yea it was on high and adaptive but it didn't worked, tried to do a lower it to 96hz but stayed on 60 hz.
henke2 said:
Samsung says 10-120Hz?! App says 48-120Hz... why?
Click to expand...
Click to collapse
We have to ask Samsung for that.
saifullah90 said:
it does work when you change to hz but forcing it to stay at 120hz it just wont do it. i did the adb setup .
Click to expand...
Click to collapse
saifullah90 said:
Yea it was on high and adaptive but it didn't worked, tried to do a lower it to 96hz but stayed on 60 hz.
Click to expand...
Click to collapse
You should use "HIGH" option to lock/disable adaptive behavior.
Also check FAQ#3 below, it might help.
tribalfs said:
...
FAQs:
The 96hz setting drops more regularly to 60hz than 120hz. Is this an expected behavior?
It's the stock behavior. It's probably because of the relatively larger gap of gamma curves between 120hz and 60hz than between 96hz and 60hz. Samsung needs to fine tune these gamma curves across different refresh rates so users perceive consistent brightness level when refresh rate switches. Otherwise, there will be visible flickers which our eyes are more sensitive when on a darker environment. Seems Samsung hasn't fined tune yet 120hz/60hz gamma for darker environment as 120hz switches to 60hz only on a certain higher level of brightness.Update: It seems Samsung has improved this behavior in its Nov 2020 update. This possibly the "Improved battery usage time" in its changelog.Reference android framework source codeRelevant article from Anandtech
What will happen if I uninstall this app?
The last set max freq will persist after uninstall. Set the max refresh rate to 120Hz first before uninstalling to keep stock refresh rate.
Why refresh rate stays at 60hz on google maps, waze and some other apps and games even if I set a higher max refresh rate?
These apps are either (1) blacklisted by the android system to not use high refresh rates due to compatibility reasons, (2) sets its own preferred refresh rate or (2) controlled by Samsung's game optimizing service (game launcher). GMH app can do nothing to override this on its end.
Why is it that we can't download this app in play store and how do we know it's safe?
This app targets older android sdk in order to set refresh rates without ADB or root requirement. Unfortunately, play store doesn't anymore allow us to publish app targeting such older sdk. If you doubt if it's safe, you can scan it with any virus scanner like virustotal and metadefender.
Can I hide persistent notification?
Yes. Just long press the notification in notification panel to hide specific notification channel.
Click to expand...
Click to collapse
tribalfs said:
You should use "HIGH" option to lock/disable adaptive behavior.
Also check FAQ#3 below, it might help.
Click to expand...
Click to collapse
It doesn't work my friend, it keeps going back to 60 hz no matter what I do.
tribalfs said:
AutoSet the screen OFF refresh rate to the lowest available on supported Samsung devices. This overrides Samsung's strange stock behavior which sets the refresh rate to the highest on screen off (at least on Note 20 ultra) - to improve standby power consumption a bit - ADB setup or Root not needed.
Click to expand...
Click to collapse
Huh? Why does refresh rate matter if the screen is off?
Hi, I've been using this app so far and it seems to work well for me on my S21 Ultra . But the minimum referesh rate my phone goes down to when viewing static images is 60hz, and 48hz while viewing 24fps video.
Would it be possible to make the refresh rate go down to 10hz when viewing static images in a later update?
Thank you
Maddmatt said:
Huh? Why does refresh rate matter if the screen is off?
Click to expand...
Click to collapse
It's not only the screen that's consuming power. Some components are still working behind it even the screen is off.
It will matter more also if you are using AOD.
I noticed though that Samsung somehow fixed the behavior in one ui 3.0/3.1 setting it now to 60hz( from previous 120hz) in N20 ultra.
But 48hz is should be better!
V6.50 is up!
tribalfs said:
Changelogs
v6.50
- Fixed high mode not working on some S21/N20U devices- Show real-time refresh rate in notification and/or overlay- Added some language support- Improve notifications- App power consumption improvement- Ad-free trial added- Stability and other improvements
...
...
Click to expand...
Click to collapse
tribalfs said:
V6.50 is up!
Click to expand...
Click to collapse
With much thanks, now it working
I ordered a Xiaomi Mi 11 Global edition.
It is MIUI 12.0.3.0 Global out of the box.
I noticed that the 120hz is not consistent and stable. I am not sure if this is because MIUI lacks optimization or the apps I am using is not yet optimized for 120hz.
For example, when I browse a photo to be uploaded in facebook, the entire display shifts back to 60hz. Or when I scroll down a long post/thread in Reddit, Facebook, Twitter and other social media, the display scales back down to 60hz. I believe this is not a hardware issue, since the Snapdragon888 is more than capable of running this task.
Multi-tasking and opening the recent menu shifts the display to 90hz.
When playing games that only support 60hz, the frame rate begins to stutter, so I have to turn the refresh rate to 60hz.
I have to restart the phone to turn back to 120hz to fix these issues. Is this caused by adaptive refresh rate?
I also tried turning the display down to 1080p, still no luck.
I am considering flashing the EU ROM, hoping things would be fine. It is unfortunate that I could not fully enjoy the 1440p + 120hz display of the Mi 11.
Xiaomi should not spam phones into the market every month, so their software developers could focus more on optimization, since there would be less devices.
Settings / Display / Display resolution / when you use WQHD+ underneath uncheck / Save battery with WQHD
here you can see( left upper corner) how is work the refresh rate on this phone
RebornCheiko said:
I ordered a Xiaomi Mi 11 Global edition.
It is MIUI 12.0.3.0 Global out of the box.
I noticed that the 120hz is not consistent and stable. I am not sure if this is because MIUI lacks optimization or the apps I am using is not yet optimized for 120hz.
For example, when I browse a photo to be uploaded in facebook, the entire display shifts back to 60hz. Or when I scroll down a long post/thread in Reddit, Facebook, Twitter and other social media, the display scales back down to 60hz. I believe this is not a hardware issue, since the Snapdragon888 is more than capable of running this task.
Multi-tasking and opening the recent menu shifts the display to 90hz.
When playing games that only support 60hz, the frame rate begins to stutter, so I have to turn the refresh rate to 60hz.
I have to restart the phone to turn back to 120hz to fix these issues. Is this caused by adaptive refresh rate?
I also tried turning the display down to 1080p, still no luck.
I am considering flashing the EU ROM, hoping things would be fine. It is unfortunate that I could not fully enjoy the 1440p + 120hz display of the Mi 11.
Xiaomi should not spam phones into the market every month, so their software developers could focus more on optimization, since there would be less devices.
Click to expand...
Click to collapse
You can force 120hz all the time by setting the minimum refresh rate to 120hz, using the following commands in ADB :
- adb shell
- settings put system min_refresh_rate 120
ralovesoc said:
You can force 120hz all the time by setting the minimum refresh rate to 120hz, using the following commands in ADB :
- adb shell
- settings put system min_refresh_rate 120
Click to expand...
Click to collapse
I'm a complete noob can I get a walkthrough and what is ADB?
When 120Hz is enabled in settings, Youtube app will run at lower 60Hz which saves the battery (since there is no need to view 30fps videos in 120Hz)
But Youtube Vanced runs at fixed 120Hz - is there any way to force Vanced to also run at 60Hz? By adding vanced youtube bundle id to system table or something?
Also is there a way to force AOD to run at 60Hz (or lower?) - Always On Display runs at 120Hz fixed which is super unnecessary and just drains the battery
Especially the Always On Display should not run in 120hz, that is totally crazy. How do you know that it does?
Danacy said:
Especially the Always On Display should not run in 120hz, that is totally crazy. How do you know that it does?
Click to expand...
Click to collapse
it does... enable the power monitor in dev settings and you see it
it does always, no idea why
it could run at 1Hz would be enough
Danacy said:
Especially the Always On Display should not run in 120hz, that is totally crazy. How do you know that it does?
Click to expand...
Click to collapse
enable show refresh rate option in developer settings - it shows 120Hz on AOD
qvert said:
it does... enable the power monitor in dev settings and you see it
it does always, no idea why
it could run at 1Hz would be enough
Click to expand...
Click to collapse
display on Mi 11 is not capable of running at 1Hz, I think 48Hz is the lowest it can go (but not sure even of that or if 60Hz is a hard minimum)
The better choice is to using 90hz rate all the time, good balance between 60/120hz. Seriously i don't see any difference in game/apps between 90/120 but battery life is really different !
Personnaly if you like so much 120hz, you can replace 60hz by 90hz and keep 90/120 insteak of 60/90hz
Pho3nX said:
The better choice is to using 90hz rate all the time, good balance between 60/120hz. Seriously i don't see any difference in game/apps between 90/120 but battery life is really different !
Personnaly if you like so much 120hz, you can replace 60hz by 90hz and keep 90/120 insteak of 60/90hz
Click to expand...
Click to collapse
I tried 90Hz using the method from the video, but it wasn't good - 90Hz felt like it was below 60Hz, not smooth at all when scrolling
So I didn't like this method at all
It would be best if MIUI had option to choose max refresh rate for each app individually
Forcing max refresh rate in most apps is stupid, especially on AOD
Furma said:
I tried 90Hz using the method from the video, but it wasn't good - 90Hz felt like it was below 60Hz, not smooth at all when scrolling
So I didn't like this method at all
It would be best if MIUI had option to choose max refresh rate for each app individually
Forcing max refresh rate in most apps is stupid, especially on AOD
Click to expand...
Click to collapse
LOL
90Hz it's true, and smooth, you can easily see the difference between 60/90
Pho3nX said:
LOL
90Hz it's true, and smooth, you can easily see the difference between 60/90
Click to expand...
Click to collapse
I've followed method shown in the video after which 90Hz was enabled (I enabled refresh rate indicator in dev settings so I can see the refresh rate)
scrolling thru app drawer and settings was choppy at 90Hz - there was micro stuttering, not sure why, but it was there
So enabling 90Hz via this method is not good (at least on my Mi 11)
Furma said:
I've followed method shown in the video after which 90Hz was enabled (I enabled refresh rate indicator in dev settings so I can see the refresh rate)
scrolling thru app drawer and settings was choppy at 90Hz - there was micro stuttering, not sure why, but it was there
So enabling 90Hz via this method is not good (at least on my Mi 11)
Click to expand...
Click to collapse
Guys there no "choppy" 90 hz, 90 hz is truly activated, it's not 120 hz. In my case all is smooth. This 90 hz is like 90 hz purposed on MiuiMix. There no good/true or bad method... It's 90 hz, not 120 hz, so just better than 60 hz. No less, no more
I love this phone, but there is one huge annoyance, there doesn't seem to be a way to make the screen actually run at a sustained framerate.
I have it set to 144hz in the menu, but it routinely drops to 60fps or 120fps depending on the app
This normally isn't a big problem, except nova launcher only runs at 60fps and so scrolling the app drawer is incredibly bad.
Pokemon Go also only runs at 60fps...and since the game operates at 1/2 vsyn, the effective fps is only 30, which is atrocious compared to the 72fps it runs at on the ROG6
Don't confuse Screen Refresh Rate and Frames Per Second. Totally different things.
jwoegerbauer said:
Don't confuse Screen Refresh Rate and Frames Per Second. Totally different things.
Click to expand...
Click to collapse
I mean... Not really
Obviously the screen always runs at a refresh rate of 144hz because it isn't a VRR display(as far as I know that doesn't exist on phones)
So what you are changing in settings is always the frame rate that the phone is rendering at.
Your phone should ALWAYS be rendering at the frame rate you select in the settings menu... But this phone doesn't seem to do that, and it's annoying because it makes the usage experience worse than every other phone I have
BigDog87 said:
I mean... Not really
Obviously the screen always runs at a refresh rate of 144hz because it isn't a VRR display(as far as I know that doesn't exist on phones)
So what you are changing in settings is always the frame rate that the phone is rendering at.
Your phone should ALWAYS be rendering at the frame rate you select in the settings menu... But this phone doesn't seem to do that, and it's annoying because it makes the usage experience worse than every other phone I have
Click to expand...
Click to collapse
Most of the reviews I've read/watched confirm what you've said. When you set 144hz, it runs that way in the default launcher and all the menus, but when you open certain apps, if they don't support 144hz natively then they just don't run at 144hz. The reviews seem to indicate that the developers of said apps need to enable support for 144hz.
So I was poking around the settings, and entered developer mode. There's an option to force the screen to stay at 144hz at ALL TIMES. It's called LOCK REFRESH RATE. I was able to confirm this works because there is also an option to SHOW REFRESH RATE which displays the screen refresh rate in the upper corner of the display. Before I locked the refresh rate, I used the show refresh rate function to view the refresh rate using different apps. In the phone menus, and app drawer, and google feed, etc the phone would remain at 144hz. But when opening some apps like Chrome for example, the refresh rate would drop to 120hz, etc. However, when I LOCKED the refresh rate in the dev options, the screen refresh rate stayed at 144hz in EVERY app and scenario I was in. It does state that this will drain your battery more rapidly when selecting to lock the refresh rate in the developer options. FYI
Hi guys, it's possible put the Refresh rate always 120HZ? i think that LTPO refresh rate it's great, but i want always 120HZ, I can't found it, I've tryed to search on Display option and Development options
Many thx gyus
sorry, Oppo
I very much doubt you can, at least not without root and third party controls, which are ill-advised.
When I get my device later this week I will look into it as part of my review.
You don't need 120hz to display a static image, text etc say checking your emails - it is just going to destroy your battery life - dynamic refresh rates are the best way, so long as the firmware handling the adjustment works as intended.