Backlight pulsing - EVO 4G Q&A, Help & Troubleshooting

Just got 2 new EVOs a few days back, and I noticed my backlight pulsing. It will just barely dim in what seems a constant cycle, approx every 5 seconds. It's not a lot, but when constantly looking at the screen, like during a game or something, it's quite annoying. It's not noticeable on something dark (duh) or something that is constantly distracting (movies), put playing a word game or something, it's definitely noticeable (and did I say annoying?).
I thought maybe it was my phone until the wife asked me if mine did it. D'oh, can't imagine that both of ours doing it is a fluke. So wondering if anyone else knows why it's doing that.
At first I was thinking it was a slight reminder that I had a status message or something... so cleared all those and still doing it. I've got it set on automatic light sensing and will change it to manual today to see if it still does it. Maybe the light sensor is to sensitive (wouldn't explain the steady pulsing though, would expect that to be more random). I did test them both in the same environment, lighting, etc. In light and in pitch dark, with a static image on the screen (as to not have the EVO itself causing the light sensor detect light change).
Possibly it's signalling something else, but I can't think of what (batteries were charged).
Wondered if anyone else has noticed this, and like me thought maybe it was just their phone. Again, it's not a DRASTIC change, but enough to be ... yes. . ANNOYING lol

Mine does this too. Maybe not every 5 seconds but it does do it consistently. It distracts me every once in awhile as I think I just got a text.

Post what hardware version you have. If both of you guys have 003 it may be another thing to that revisions list of errors for them to correct.

It may be the auto brightness setting. Someone mentioned it in another thread. My auto brightness is turned on.

I think it is the Auto Brightness setting. It was on mine at least. Turned it off and the pulsing went away.

Yeah, turn off the autobrightness, it was doing the same thing for me and turning it off and then adjusting to a good level, and now its fixed.

fixed? eh
I wouldn't say disabling auto brightness fixes it. I actually like the feature, and was one of the features I actually liked on my iPhone.
And yes, it is hardware version 0003. I'll look for a thread on the 0003 hardware issues, unless someone links my to it first. Thanks

Related

Strange 'flicker' issue in manila mail tab animation

Right!
I just noticed something really weird. I have 5 accounts set up for mail. All of these accounts have many mails in them.
Now, on the mail tab in Manila, when I switch between these accounts (so you see the swirling envelope animation) my screen flickers. And I do not mean just Manila, the entire screen... like the backlight is going on/off (well lower/higher, not really off).
This animation is the only place I've been able to find this issue. My other TP2 does not have this problem. Neither do the TP2's of the people I have talked to on IRC.
So there are two questions:
1) Is anybody else seeing this? (if so, are there other places you noticed?)
2) Anybody know what the problem may be?
3) WTF! (thats not a question)
I'd hate to have to RMA this baby.
I noticed flickering when playing solitaire. I initially put it down to the auto ambient backlight brightness adjustment but I turned that off as it just wasn't working. I still get the flicker in solitaire and it's noticeable when moving a card over some others.
After reading this post I checked my mail tab and yes I do get a flicker when moving between accounts. It's harder to spot because most of the touchflo screen is black. I haven't noticed it on anything else but that's probably because I'd dismissed flicker on other applications as down to the crappy auto-backlight adjustment.
To be clear, the flicker is a rapid dimming and brightning of the whole display.
Same here, didn't realized it until you mentioned it.
No big deal for me.
skycamefalling said:
Same here, didn't realized it until you mentioned it.
No big deal for me.
Click to expand...
Click to collapse
Had the same with the HD when the brighness was on full. Same on the TP2. On the HD issue it was put down to poor screen. Think its a common thing.
it seems to be similar to the technique Samsung is using with their LCD TV line... Dynamic Contrast. Basically it turns down backlighting to increase contrast between light and dark screens. I don't care for it on the Samsung TV's and I don't care for it on my TP2. But so far this is my only complaint, and it's a small one. I absolutely love this device (just got it today)
I have this issue. I guess its not normal otherwise your other TP2 would do it.
Ive also noticed it in google maps. When panning and it loads up the next image the entire screen gets dimmer.
Im going to send mine to HTC soon for a pink tinge on the screen. I will raise this with them.
I'm quite convinced that the effect was intended...
Try calibrating backlight with Lumos: http://forum.xda-developers.com/showthread.php?t=450318
It can drastically reduce the effect...

Weird screen dimming on bright screens

So in the last few days I've noticed something strange. Anytime I have a bright image like a white screen or the sepia or white backgrounds in Kindle, the entire screen dims and brightens randomly. Its an extremely small change, but it is noticeable. I don't have content adaptive brightness or auto brightness active, so I know its not that. I tried different bright levels and get the same result. If the screen is a dark image, like dark mode on Tapatalk, I can't see any flicker whatsoever. I have tried a clean install of PA 3.57 with AK SKL 256, and its still the same. It also doesn't seem to matter if I just picked the phone up or have been using it a while.
Does anybody have any ideas as to what's happening? Should I start looking for a new phone cause mine is dying, or is this normal somehow and I just never noticed, or could it even be an app specific thing?
Thanks for any help!!
PS: I just saw it flickering minutes ago on Kindle and Chrome (imdb website which has LOTS of white) but right now typing this post on Tapatalk I don't see any flicker, and as most of you know that's a white background.
02ranger said:
So in the last few days I've noticed something strange. Anytime I have a bright image like a white screen or the sepia or white backgrounds in Kindle, the entire screen dims and brightens randomly. Its an extremely small change, but it is noticeable. I don't have content adaptive brightness or auto brightness active, so I know its not that. I tried different bright levels and get the same result. If the screen is a dark image, like dark mode on Tapatalk, I can't see any flicker whatsoever. I have tried a clean install of PA 3.57 with AK SKL 256, and its still the same. It also doesn't seem to matter if I just picked the phone up or have been using it a while.
Does anybody have any ideas as to what's happening? Should I start looking for a new phone cause mine is dying, or is this normal somehow and I just never noticed, or could it even be an app specific thing?
Thanks for any help!!
PS: I just saw it flickering minutes ago on Kindle and Chrome (imdb website which has LOTS of white) but right now typing this post on Tapatalk I don't see any flicker, and as most of you know that's a white background.
Click to expand...
Click to collapse
I too have noticed this when using my phone on minimum brightness. I used since the last 21 days PA ROM, always the latest and AK SKL 256. I noticed it on websites with alot white on the screen. I do have content adaptive brightness enabled, and auto brightness disabled.
And please, just keep your phone till it's dead Mabey everyone has this but no1 has ever noticed this untill just now
So it seems to be getting worse. Now pretty much as soon as I open a white screen it starts flickering and seems to be dimming darker as well. I've been using PA, what are the odds its a ROM issue? Nobody else has reported it but I think I'm gonna flash to stock and see what happens.
Also, bump.
I "think" its fixed now. I flashed back to stock, had a totally clean phone, then flashed PA back and copied over just what I needed to the sdcard and I haven't seen the flicker come back. The clean flash made the vibration much stronger on the phone so I guess it's conceivable a screen problem was fixed too. I must've had something really messed up in there.......

[Q] Broken display/failure?

Hey Guys,
I'm having a really weird problem with may Tab 3 7.0. I got it about four weeks ago and everything was fine until thursday. I used it normally, listened to some music and then let it lay around for a while. When I turned it on again, it seemed like the display was messed up. It now looks like 8bit graphics. I hope you know what I mean. Really pixelated, missing colors, hard edges instead of gradients and so on. Also it looks really bad and some parts of the display are flickering even when nothing moves or is animated. The color black is also gone, it looks really greenish when it is supposed to be black.
This is sadly throughout the whole device, meaning, also in the startup screen, in recovery, DL-mode and so one. I tried to flash some new firmwares, nothing changed.
So far I guess, it has to be some software issue because sometimes when I turn on the tablet, the graphics look normal for just a second until they change back to the ****ty looks.
Does anybody of you have an idea what might have caused this, or has an idea to solve this issue? Would be really great If you could help me out!
Greetings
Mav

[Q] Screen goes randomly off

Hello,
The screen of my moto 360 goes randomly off and vibrates at that moment, just like when you dim the screen with your hand., but now I'm using it. It's very frustrating because I can't even open an app normally or the screen goed of and I need to start over again. Does anyone know how to fix this?
Having same issues with mine.
Really strange and really annoying. Its like when u cover it with palm. It vibrates and screen goes off but ur in the middle of trying to do something. Anyone else having this problem?
Glad I'm not the only one having this issue, just got my Moto 360 today. I'll be in the Settings or other parts of the watch and it will just randomly turn off. It is really frustrating to deal with.
I have the same issue. I have pretty hairy arms so I wonder if the hairs are somehow triggering the capacitive touch screen.
you guys try to do a reset on the watch yet?? not just a reboot..
Any updates on this? I'm having the same issue
Any updates? I have the same issue I think it happend after udate to 5.0.2 but I'm not sure.
I'm also having the same problem. I picked up a new Moto 360 during the BBY sale rush of the last couple of days. At first it was buggy but the screen seemed to stay on while working with it. Then it had a system update, and since then most bug issues (like the faces not updating with the companion app changes) went away, however from that point the screen constantly shuts off, usually with a little buzz, while I'm interacting with the watch.
For instance, regarding the sensor used to turn off the watch if you palm it. I thought maybe that was it, so I was looking for a way to turn that off. I went into settings, and spend about 10 times of the screen shutting off before I could get to "accessibility settings" just to see if that might be there.
This problem occurs whether I'm wearing the watch or not (trying to eliminate arm hair or similar), and has occurred after a factory reset and re-pair with my phone (Note 4). Ambient sensor settings don't help, because all that does is make the screen go dark instead of off, but it still reverts back to the clock no matter what I was doing.
Any ideas? Any way to turn off a sensor perhaps, maybe in a custom ROM? Since this seems to be associated with an update near as I can tell, I wonder if a fix is coming from Moto or if it's too rare of an issue to be on their radar.
As an update, I replaced the watch with a new one, and this new watch is perfect. It started on outdated software which I left on for a bit to make sure it didn't show the problem, then I updated. Still no issues. I think there is a chance the problem is software regardless, but either way it must be a small portion of watches and isn't necessarily tied to any particular outside software influence (phone model or android version, or installed apps as NONE of those things changed). My advice to people reading this thread is to exchange the watch or get an RMA if possible.
Same Issue
Hi All,
I have the same issue. Sent it back for repair so let's see...
Same issue here as well

Brightness Bug?

Hi there
first of all, I have to excuse for my (hopefully not so bad) english, I´m simply not a native speaker. But I hope you´ll all get what I´d like to express and we can communicate.
Anyway, I´ve got a problem with my Tab S4 and I´m hoping someone can help me.
I´ve noticed my S4 behaves weird in case of Display brightness/contrast. I´ve set the brightness to maximum and disabled the dynamic brightness. But when I´m watching a movie and the sensor/front facing camera gets exposed to bright daylight the image seems to get brighter or the contrast gets boosted or something like this. When I put my hand in front of the sensor to cover it from the light the image gets back to normal.
I´ve already contacted Samsung about, and theyr first reply was to disable dynamic brightness (so they did not fully read my first mail, there I explained that I´ve disabled it) and then suggested a soft reset (great euphemism for turning it off and on again) and because this didnt help either a hard reset.
I have a felling this also wont held to get rid of that problem, but will try it in the next few days when I´m not able to solve the problem. Does someone has any idea what could cause the problem? Or how to solve it?
Oh and bevore I forget it, this happend while watching a Video on Amazon Prime Video, I dont know if this also happens with other apps because I did not test it yet.
Mine does this too, its most likely a feature where when the sensor detects sunlight hitting the screen it turns the brightness up higher than you can on your own. My Note 2 had this function and someone wrote a neat little app that allowed you to use that max brightness anytime you want, obviously required root though.

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