I'm trying to improve the battery autonomy and the gaming performance of my Elephone M2 decreasing the screen resolution.
After changed the resolution with a new 720x1280 one, soft keys stopped working until default settings.
How are screen resolution and soft keys linked? Is there a way to change it without losing touch's response?
Thank you for your attention.
Related
I hate the qHD screen, if an AMOLED screen of the same size and resolution was made, would it even be possible to replace this screen?
Generally, no. It is highly unlikely that an AMOLED screen will be used on the D4, and if it is, the screens would likely not be swappable. They are generally proprietary, being that power consumption is different.
The HTC Incredible had two screens released because they ran out of stock, and they were not swappable. I know this is Motorola, but don't count on it. I was disappointed with the screen brightness, then I found out its because the default setting is too dim. You may want to try adjusting it or getting a wisget to adjust it (I use Power Control Plus).
it's not the brightness i have a problem with, it's the poor quality and the ghosting, i mostly bought this phone because of the 4G and physical keyboard
Hi,
I change my sgs i9000 screen after breaking it.
Everything works fine but I can't change any screen parameter: luminosity (locked to a high value), color tunning (colors, gamma)... The screen can display several luminosity values (locked screen vs normal screen for example) but android settings (both in manual or automatic mode) doesn't affect it.
This high locked luminosity consumes a lot of battery :-/
After trying several roms and kernels (remics jb 2.0 & 3.1, c-rom mix v11) with all wipes and verifying luminosity sensor behavior I think the screen is responsible for this problem. I also tried to change luminosity with a dedicated app but no result.
Have you ever heard about such defective sceen or screen settings problem ? Any idea to reduce luminosity ?
Thank you in advance.
Regards.
Hello,
Another guide from me , actually a tweak to solve the very annoying flickering issue with the screen of the x98 tablet with Intel integrated graphics chipset. You can easily detect this if you point the camera of your phone toward the screen.
The reason of the problem is called PWM which is set to only 200hz in our tablets as default. You can find exhaustive explanation of the issue here: http://www.flatpanelshd.com/focus.php?subaction=showfull&id=1362457985
And the solution is actually very simple: increase the value of PWM to 4000hz (yes much much more than the default value) with this great open source Windows program: https://github.com/tpurtell/PWM
Now our screen will not flicker anymore, I can set the screen light value to 25% and have the same level of colors contrast, without the need of playing with the brightness control of Intel (that would result in a loss of contrast).
Enjoy your new screen!
Once the screen changes to 60hz and if you then where to rotate the screen without touching it, it will remain at 60hz during the rotation and look slightly laggy.
Exynos / OneUI 4.0
Proof: Laggy Stuff
TLDR: The screen should change to 120hz during the rotation.
Samsung, plz fix.
Welcome to XDA
Lol, slow screen rotation is a Samsung trademark
It's not a 60hz thing per se. May have to do will the sensor refresh rate at least on fixed display rate devices.
blackhawk said:
Welcome to XDA
Lol, slow screen rotation is a Samsung trademark
It's not a 60hz thing per se. May have to do will the sensor refresh rate at least on fixed display rate devices.
Click to expand...
Click to collapse
No it is a 60hz thing, the screen does not boost to 120hz when a rotation is happening. You can check this by using a system FPS overlay.
Mine changes to 120 on screen rotation. It is very very brief but it definitely happens...
jakemog said:
No it is a 60hz thing, the screen does not boost to 120hz when a rotation is happening. You can check this by using a system FPS overlay.
Click to expand...
Click to collapse
I'm facing the same problem, maybe reducing the refresh rate helps it?
I just tried to replicate the issue on my phone as follows:
Opened a web page and when i was scrolling around, refresh rate was 120.
Stopped scrolling and refresh rate dropped to 60.
Without touching the screen, I rotated the phone and refresh rate goes up for a split second to 120, then as soon as rotation is complete, it dropped back to 60, untill I touched the screen again.
Tried this multiple times, and it's a reproducible behaviour.
I think it's working as intended. As the screen rotates, refresh rate ramps up to 120, making the rotation animation smooth, then it drops back down again to its previous state. I wasn't able to produce any lag during the screen rotation in my tests. It's very smooth.
I tried screen recording this behaviour but turning on screen recorder locks the screen to 60Hz and can't see the changes in refresh rate. One would need to record the screen with another camera/device to show the behavious I've described above.
enigmaamit said:
I just tried to replicate the issue on my phone as follows:
Opened a web page and when i was scrolling around, refresh rate was 120.
Stopped scrolling and refresh rate dropped to 60.
Without touching the screen, I rotated the phone and refresh rate goes up for a split second to 120, then as soon as rotation is complete, it dropped back to 60, untill I touched the screen again.
Tried this multiple times, and it's a reproducible behaviour.
I think it's working as intended. As the screen rotates, refresh rate ramps up to 120, making the rotation animation smooth, then it drops back down again to its previous state. I wasn't able to produce any lag during the screen rotation in my tests. It's very smooth.
I tried screen recording this behaviour but turning on screen recorder locks the screen to 60Hz and can't see the changes in refresh rate. One would need to record the screen with another camera/device to show the behavious I've described above.
Click to expand...
Click to collapse
Do you have Exynos or QC?
Doing the same thing I can reproduce not boosting to 120hz during rotation, I can post video as proof.
Video added in original post.
jakemog said:
Do you have Exynos or QC?
Doing the same thing I can reproduce not boosting to 120hz during rotation, I can post video as proof.
Click to expand...
Click to collapse
Exynos.
Did the test on BUK8.
Just upgraded to BUKG.
enigmaamit said:
Exynos.
Did the test on BUK8.
Just upgraded to BUKG.
Click to expand...
Click to collapse
Well that doesn't make any sense, can you post a video?
AlienTekOriginal said:
Well that doesn't make any sense, can you post a video?
Click to expand...
Click to collapse
Here you go... S21 ultra screen rotation
Duplicate post
enigmaamit said:
Here you go... S21 ultra screen rotation
Click to expand...
Click to collapse
Well that makes no sense, great
Hi,
like other OLED phones, the ASUS Zenfone 8 suffers from PWM flickering in lower brightness. If you ever wondered why your phone seems flickery, unsettled or straining to the eyes in low brightness, this comes exactly from PWM flicker in the OLED display. (It's high frequency flicker so you won't notice immediately, but might be able to cause fatigue or eye strain, it is different from person to person) Dxomark had an article about this issue.
The ASUS Zenfone 8 has an option to enable DC dimming to mitigate PWM flickering in low brightness, according to reviewers and the display manufacturer. Stupidly, however, it is an option, not enabled by default. (Also only available in 60 Hz, but that's a minor restriction IMHO) In can be found under settings in stock ROM. But in my custom ROM (LineageOS), this option is not available anymore.
I am wondering if anyone found out a way to enable the DC dimming option in custom ROMs as well, maybe programmatically via. a control file, from command line, adb or whatever. Would be great to get this feature to non-stock-ROM usages as well.
I found out something, at least a workaround.
Dimming is actually quite straightforward in OLED displays, since there is no backlight. A grey value of 20% RGB in full brightness is the same as a white value (100% RGB) in 20% brightness. Literally. They are the same. In regular LCD displays, this would not be the same; there would be a huge difference in contrast between full backlight and reduced backlight.
Now, since PWM flicker only occurs in lower brightness settings, we can "trick" the display, set it to max. brightness and instead dim the display by just reducing all the RGB values by the percentage the display should be dimmed. The result will look exactly the same just without PWM. At least I haven't found any differences, also the colors are still very accurate despeite OLED displays are said to have lower color accuracy when dimmed via. DC dimming.
There exists some apps to replace the "hardware dimming" with "software dimming":
* [APP]OLED Saver (flicker free backlight dimming, no PWM)
* [APP] AMOLED PWMfree
I tried the first one (OLED Saver) and I am quite satisfied. I even found the custom brightness adaption way better than stock Android, since it reacts faster. And the difference between PWM and no PWM is really noticeable. Reading text in low light is much more pleasing now, much easier to the eyes, I can recommend you to try it out.
A drawback is that both of these apps reduce brightness via. a full screen overlay. Since most of us here have rooted phones, a much better solution would be to dim the display by modifying the system color settings. Similar to apps like CF.lumen which use this to implement night sight. Unfortunately, I haven't found an app doing this for brightness regulation. If there exists one, please let me know, it would be the ideal solution!
If custom ROM developers are reading this, would be a great feature to add to any ROM It is very straightforward to implement: Just decouple brightness regulation from the display driver; and reuse the brightness signal to alter the system color settings. I am sure that the ASUS DC dimming option does something like this as well.