Hell0
Getting vertical lines on smt700 non rooted after over the air update (U.S)
After update I did a factory reset installed apps One by one and I started to notice a flicker of VERTICAL lines appearing at start of boot and also when batter is low it will freez slightly and do the vertical line thing before freezing a little then shutting off..
this only also with games...
Thanks a lot..
-AHMED-
My sister noticed an occasional black screen flash after updating her Tab S 10.5 to Lollipop. I have the same model upgraded to Lollipop and have never experienced this issue but twice, once on KitKat and once with Lollipop I saw part of the screen look scrambled (like an old set tuned to a channel that WA not in range), for a second after hitting the home key.
Sent from my SM-T800 using XDA Premium HD app
Green flicker
Smt700 wifi screen flashes green and gets vertical lines....
Sometimes when the screen does this flickering it restarts...
-Ahmed-
My 10.5" T800 has been on for over 200 days and has never been turned off or rebooted since i got it, no problems at all with flickering, but the older you get the less sensitive you get, I am not a gamer so my tablet is not stressed.
If you are having problems get your tablet repaired or replaced.
John.
I ve the same issue after upgrading to lollipop, I cant find the solution
Still flickering
try everything to solve this flickering with vertical line issue.
Nothing worked..
Factory reset, disable hardware overlays and limit performance ultimately won't fix this issue...
I have the same issue.
Downgrading does not solve the problem
I have seen that it happens when battery is lower than 50%.
To mitigate the problem I have set seen brightness to 30% fixed and also losing mobile segnala makes the screen flicker or the tablet to reboot
When you rotate the tablet do the vertical lines rotate as well.
John.
All problems started only after lollipop update.well most of us are getting them,,random reboots,green flickering lines,grey bars etc,,
But the only available solution for flickering Is turning the power saving mode on which is what I have done
iam facing this issue with my t705
its not the lollipop fault
its an hardware problem, the battery connector socket
This happened to me before and after the lollipop update. Someone suggested to use power saving mode to restrict CPU usage. It seems as if the tablet goes crazy whenever theres a high cpu load involved.
I have the same problem after update to lolipop. Most often occurs when there is a lot of notifications and low battery.
In my opinion is a software problem, what do you think ?
edit:
8% battery, lot of vertical lines during using notifications center, tablet reboots - this never happened before (on 4.4).
[SOLVED]
Fixed screen flickering issue !!
did this by governing the frequency to not pass more than 1.6 ghz...
Rooting then installing overclock widget and setting frequency to not pass 1.6ghz. Max..
From what I know about chips ''they are not all baked alike'' the same chip could come out with lower stable frequencies ..
I hope this helps someone for it has 100% solved the screen flickering problem for my smt700...
Thanks...
-Ahmed-
I found this, might be worth a try.
http://www.problogbooster.com/2014/06/on-screen-display-flickering-error-android-xda.html
John.
Tinderbox (UK) said:
I found this, might be worth a try.
http://www.problogbooster.com/2014/06/on-screen-display-flickering-error-android-xda.html
John.
Click to expand...
Click to collapse
My relative has complained of an odd flicker (screen goes briefly black) after updating to Lollipop. Usually happens while moving from an app to the home screen. I sent them instructions based on that article so they can test if it fixes their issue. I'll post the results but likely after a few days to make sure it actually works. Oddly enough I have an identical model SM-T800 on Lollipop and do not have the issue that they find so annoying.
Thanks for posting the article.
Sent from my SM-T800 using XDA Premium HD app
I've seen it on mine since Lollipop came along. In my case I get the screen with snow - like a TV tuned to a channel with no signal - . It's happened when the screen was timed out and then awakened. I've not been bothered by it more than about 5 or 6 times so I've just not bothered with doing anything about it.
Sefto said:
I have the same problem after update to lolipop. Most often occurs when there is a lot of notifications and low battery.
In my opinion is a software problem, what do you think ?
edit:
8% battery, lot of vertical lines during using notifications center, tablet reboots - this never happened before (on 4.4).
Click to expand...
Click to collapse
Video:
https://www.youtube.com/watch?v=4iBDVirN_XM
Service center in Poland (CCS) replaced screen and repaired motherboard. It seems to be fixed.
I thought it was a lollipop issue, but having followed the advice to force GPU screen rendering through developer options, I found the problem did not go away. Thus, it must be a hardware issue.
corvus.corax said:
I thought it was a lollipop issue, but having followed the advice to force GPU screen rendering through developer options, I found the problem did not go away. Thus, it must be a hardware issue.
Click to expand...
Click to collapse
Hello,
Did you try to set the default CPU frequency to 1.6 ghz... maybe even try to govern it down to 1.4ghz.
For my WiFi smt700 simply underclocking the cpu completely fixed the issue...
The issue is due to either your tab cpu wasn't from a set baked that could handle Higher work loads or quick raises in frequency like from sleep or switching between apps.. forcing GPU rendering take away resources from cpu and forces the GPU to do the work.. Hopefully an official kernel update could help with this in the future...
But for now under clocking the cpu or force GPU rendering or powersave mode all appear to help resolve the screen flickering issue and the only constant that I can determine is that these fixes all involve taking away workload from the cpu...
UNDER CLOCK FOR NOW !!
Thanks... (hope underclocking helps some members here)
-Ahmed-
Sent from my SM-T700 using XDA Free mobile app
That's interesting. Unfortunately, my device is not rooted yet and I don't plan to do that in the near future. So while I can use powersaving, I can't underclock. If there is a problem with the quality of the CPU, then IMO Samsung owes me a fully working device. I mean, they sold the device with the idea it was able to run at correct speeds.
Related
Hey there every one. When I am unlocking my phone I notice that it will flash the lock screen and then disappear and then immediately re appear. When you try to lock the phone sometimes it wont lock and the buttons will stay lit and will display the lock screen but the display wont sleep unless it times out.
This happens on all ROM's that I flash except CyanogenMod
I used both of the over clock methods but the results are the same.
Please Advise
macfan74318
macfan74318 said:
Hey there every one. When I am unlocking my phone I notice that it will flash the lock screen and then disappear and then immediately re appear. When you try to lock the phone sometimes it wont lock and the buttons will stay lit and will display the lock screen but the display wont sleep unless it times out.
This happens on all ROM's that I flash except CyanogenMod
I used both of the over clock methods but the results are the same.
Please Advise
macfan74318
Click to expand...
Click to collapse
Yeah, it sucks. Theres no real way around this but disabling the lock screen helps it from happening less frequently. But then you end up draining the battery & others by the screen coming on easily by trackpad, volume keys, and power button. Its a lose/lose situation really...
sino8r said:
Yeah, it sucks. Theres no real way around this but disabling the lock screen helps it from happening less frequently. But then you end up draining the battery & others by the screen coming on easily by trackpad, volume keys, and power button. Its a lose/lose situation really...
Click to expand...
Click to collapse
I bumped my minimum clock speed to 368 MHz, and I don't have this problem anymore. YMMV
seancneal said:
I bumped my minimum clock speed to 368 MHz, and I don't have this problem anymore. YMMV
Click to expand...
Click to collapse
Still happens to me when I try that. It occurs when you press the power button twice in succession.
Hi there,
anything new on this topic? I'm currently experiencing this annoying problem as described.
I've already tried to set the minimum clock to 368 Mhz but the bug still exists. Even setting CPU to standard clock (Max/Min @800) didn't solve the problem.
Is it possible that the reason is located already inside the overclocking kernel?
Greets
dktnecro
Generally if you're overclocking and you have lockscreen issues that are not present @ stock speeds, then it sounds to me like the overclock is too much and your system probably isn't stable.
Based on my experience overclocking computers, things can very well appear stable but if you do stress testing (8+ hours straight) things often crop up and show you that it is in fact not stable. This sounds like one of those things. And that's not good. Who knows what other corruption could occur during your use at that speed? I had the same lockscreen issues myself, and once I realized it was due to overclocking too much I ended up solving another issue I had where half of the calls I received were garbled to the person on the other end. No more lockscreen issues or garbled calls since backing off the o/c a bit.
If the issue doesn't happen at stock speeds then maybe it's just the kernel, and hopefully that isn't putting you at risk of any kind of corruption, either.
Keep in mind I really can't be 100% if overclocking will cause corruption on a phone, but based on a lot of time spend overclocking pc's I would have to guess that it can. I'm surprised that this isn't brought up more often on device forums.
Hello guys, I just updated my note to the latest DMA6 stock rom as I saw a lot of good reviews regarding battery life.
However, I was just stdading at my desk and as soon as the phone booted up after the flash, I noticed some massive tearing which annoys me as hell. For those who don't know what it is, it feels like the screen refresh rate has been drastically decreased. In order to detect it on most note 2 you can follow these steps (well most of them are working this way, because I have tested this with some other notes):
-- just lower your brightness bellow 30% go into a dark room and keep looking at a fixed point while moving the phone up and down in front of your face, this while having a bright image on it. If you see a flickering image you're a victim too:S
Another way to notice this is looking at your screen trough another (phone) camera...you will notice the old CRT effect of some horizontal lines scrolling up
I had this on my 4.1.1 as well but only till the brightness was at 40%. On 4.1.2 it goes all the way till 80%.
Being pissed to the max, I flashed my 4.1.1 backup and guess what?! Tearing gone at 40%, thus it seems to be an issue with the latest kernel.
For those wondering...yes I have disabled the screen power saving option in the power saving menu.
Has anyone noticed this? Does anyone knows how to fix it?
Cheers
If you mean to say lag then. Factory reset.
Sent from my GT-N7100 using xda app-developers app
I never recall mentioning lag whereas you probably refer as to graphic rendering delay. The phone's interface is acting as it should be, it is as smooth as expected, no issues there.
Perhaps this video will describe better what I mean http://www.youtube.com/watch?v=vL_6H-0GD3Q You can see the screen flickering very clear. This is why I mentioned that you can test this in a dark room by moving the phone reproducing the old crt effect
My question is why does the flickering/tearing dissapear on some roms at 40% and on other above 80%?
Guys, excuse my English.
This week I bought 2 tablets Lg g Pad. One for me and one for my girlfriend
I think that mine is defective because it almost never gets past the test of Antutu. Always inform your tablet which will be shut down because of heat and it turns off automatically. The few times I managed to do the test, it registers 19 to 22mil points.
On the tablet of my girlfriend I can do this test and usually always score reaches 25,000 points, with little variation.
Someone already managed to fix this? I'll have to take it to rma?
Another recurring problem I'm having with my tablet is the message "Unfortunately, bluetooth has stopped" every time I open the TrackID app. Although I have tested bluetooth and is running smoothly.
joaovictorssa said:
Guys, excuse my English.
This week I bought 2 tablets Lg g Pad. One for me and one for my girlfriend
I think that mine is defective because it almost never gets past the test of Antutu. Always inform your tablet which will be shut down because of heat and it turns off automatically. The few times I managed to do the test, it registers 19 to 22mil points.
On the tablet of my girlfriend I can do this test and usually always score reaches 25,000 points, with little variation.
Someone already managed to fix this? I'll have to take it to rma?
Another recurring problem I'm having with my tablet is the message "Unfortunately, bluetooth has stopped" every time I open the TrackID app. Although I have tested bluetooth and is running smoothly.
Click to expand...
Click to collapse
I believe the overheating gpad should be rma'd or returned to the place of purchase and exchanged. Something is definitely wrong and of the few I have heard had overheating issues I have not heard of anyone fixing them themselves...
There are different CPU bin's out there. You might have one that takes a higher voltage to hit max clocks. As it is I feel the Gpad runs very close to that software shutdown limit in my testing. I can't remember the number off the top of my head but the stock LG kernel thermal shutdown is like 95 or 97, the qualcomm hard shutdown is 120 I think. So it *is* possibly to fix by changing the kernel shutdown limit higher. I don't think that should be necessary though for the owner to do, that tablet should work with all 4 cores at 100% or you aren't getting what you paid for. You can see in your Antutu scores that yours is thermal throttling the CPU speed and STILL exceeding the limit sometimes.
You can use Faux Clock to turn off thermal settings.
joaovictorssa said:
Guys, excuse my English.
This week I bought 2 tablets Lg g Pad. One for me and one for my girlfriend
I think that mine is defective because it almost never gets past the test of Antutu. Always inform your tablet which will be shut down because of heat and it turns off automatically. The few times I managed to do the test, it registers 19 to 22mil points.
On the tablet of my girlfriend I can do this test and usually always score reaches 25,000 points, with little variation.
Someone already managed to fix this? I'll have to take it to rma?
Another recurring problem I'm having with my tablet is the message "Unfortunately, bluetooth has stopped" every time I open the TrackID app. Although I have tested bluetooth and is running smoothly.
Click to expand...
Click to collapse
I have absolutely same problems. Antutu test become my pad overheated and go to shutdown. I try to run Antutu without heat protection- same problem but shutdown without message on same place. Also I have some extra temperature while using Chrome or Opera and open a lot of bookmarks. Brightness lowering automatically due overheating and come back automatically then device become "normal" temp. I have 4.4.2 Rooted stock firmware. V50020a.
to disable automatic lowering the brightness, use app from the play store called: "LGBrightnessPatcher", NO SPACE.
also can be used to other LG's devices...
Jhon998 said:
to disable automatic lowering the brightness, use app from the play store called: "LGBrightnessPatcher", NO SPACE.
also can be used to other LG's devices...
Click to expand...
Click to collapse
Tnx, but that only solution for prevent brightness lowering not overheating problem.
Karmashkinjo said:
Tnx, but that only solution for prevent brightness lowering not overheating problem.
Click to expand...
Click to collapse
Does this have any fix? I am facing the same problem in my g pad its turn automatically off show the message that tablet is heating up.
Issue with mine is that it gives this error and shuts down but in actual its quiet cool.
Mohib said:
Issue with mine is that it gives this error and shuts down but in actual its quiet cool.
Click to expand...
Click to collapse
What ROM are uou using ? Consider flashing @adrianom 's AOSP 7.1.2.... Flawless and latest available
Cheers
dirlan2001 said:
What ROM are uou using ? Consider flashing @adrianom 's AOSP 7.1.2.... Flawless and latest available
Cheers
Click to expand...
Click to collapse
I am.on stock rom. I don't think I can flash any other rom as it's an AT&T one so locked bootloader and no custom recovery etc...
Hey, Folks,
I just bought this tablet, and it is absolutely gorgeous!
The only concern that it HEATS UP sometimes.
My observation is that it heats
when three out of four processor cores (namely cpu 1, 2, 3)
get stuck at an elevated 1.57GHz frequency
(min is 0.3GHz, max is 2.27GHz)
You can see it with 3C toolbox or CPU-Z apps.
These apps report also that the internal temperatures go from 30-ish to 50-ish and even to 60-ish degrees then.
When the processor gets stuck like this, only the reboot can help, nothing else I tried can kick the process out of this stuck state..
I imagine the processor eats also quite a lot of battery then..
Do you think it is something that can be helped with by ROOTING the tablet?
(I've updated to 4.4.2)
Or it looks more like a hardware issue and I need to exchange the tablet?
Appreciate your suggestions..
P.S. Also would be curious to know if anyone else has the processor stuck like described above and what are the temperatures reported by 3X toolbox or CPU-Z...
Mine did that too the first some days then it got better. Wait about a week and if it keeps happening DM(Private) message me or post another thread
-Ket
KetOfficial said:
Mine did that too the first some days then it got better. Wait about a week and if it keeps happening DM(Private) message me or post another thread
-Ket
Click to expand...
Click to collapse
Thank you! Mine started to behave too. I do not see any overheating due to the CPU stuck.
In the mean time I learned that this "stuck CPU" problem seem to be common for Tab Pro,
but nobody cares, so perhaps it is not too serious..
Yeah it's still a problem and a battery drainer too , but you can replace the mpdecision binary with one that works (root only) and it will solve the issue, still sucks Samsung doesn't fix it, hopefully when/if they release lollipop all these issues will be solved.
can get the CM mpdecision here
http://forum.xda-developers.com/gal...rnor-issue-t2962238/post57452140#post57452140
otyg said:
Yeah it's still a problem and a battery drainer too , but you can replace the mpdecision binary with one that works (root only) and it will solve the issue, still sucks Samsung doesn't fix it, hopefully when/if they release lollipop all these issues will be solved.
can get the CM mpdecision here
http://forum.xda-developers.com/gal...rnor-issue-t2962238/post57452140#post57452140
Click to expand...
Click to collapse
Thank you, just rooted and replaced mpdecision as per instructions in your link,
will see how it behaves now... so far so good.
otyg said:
Yeah it's still a problem and a battery drainer too , but you can replace the mpdecision binary with one that works (root only) and it will solve the issue, still sucks Samsung doesn't fix it, hopefully when/if they release lollipop all these issues will be solved.
can get the CM mpdecision here
http://forum.xda-developers.com/gal...rnor-issue-t2962238/post57452140#post57452140
Click to expand...
Click to collapse
Fascinating, I have noticed random battery drain on the gtp8.4. Possibly the reason I noticed it randomly is that I restart the tab now and then after updating hosts file, and that gets done whenever there are updates, not on regular schedule.
Thanks!
First of all, Hi everyone - chefs, users and admins!
I am writing this post with a really heavy heart now, almost bleeding experience happened to me from nowhere about 2 months ago. I feel quite an advanced "flashoholic", however I've broke up with that few years ago. In 2013 I sold my Note 2 and started "new life" with Android, bought a DSLR and engaged into photography. This year, in february I have bought a tablet as I needed really something for business purposes, and I have chosen a Tab S 10.5 LTE. I didn't ever hear about any Knox tripping or anything, and as soon as it arrived I flashed a AOSP ROM to my thingie as I love AOSP overall. Than strange things started to happen with my CPU. As I recall I have noticed it first after installing Xposed to the tablet - it started heating pretty badly. When I checked my CPU states through ROM Toolbox etc I noticed it sometimes freezes at frequencies around 1.7-1.9 GHz, and during this behavior max frequencies could even fluctuate from 1.7 to 1.8, 1.9 and so on. It looks like "something" changes max frequency setting of CPU as it wants, whenever it wants to and pushes usage to the maximum.
Now, I started to look for a fix - uninstalled Xposed, every root apps etc. Nothing stopped it. I was "pretty sure" the cause is in AOSP thing and the conflict between my hardware and custom AOSP Roms. So after 2 months of tryouts to solve the problem, I today reflashed TW to "finally" get rid if this and save my battery life. What shocked me was... the bug is still here! Even with 0 apps installed, all ROM stock and clean, my CPU goes crazy, the back is hot, and CPU monitoring apps show a hard usage of 1.9 and 1.8 GHz frequencies. At this point I started to panic.
To mention - before I posted this here, tried to search over xda, googling it and so on, but it seems noone has such problem anywhere! As long as I know I can't get my warranty back, and I feel really panic and don't know what to do. I am asking experienced devs or anyone who faced it before for some help, on my knees. This tablet is great, but pretty useless when my battery hits 20% after 4 hours!
EDIT
I snapped a screenshot of some kernel options I don't understand, however someone maybe would find any wrong input here (as I can change them thanks to the app). Thanks. PS. I have changed max fr tp 550 in order to avoid heating and battery drainage, to this moment thayt's the only way I know to stop it.
Thank you very much for any help and advices, and sorry for my bad english.
/K.Z.
Try installing Watchdog, and in the setting include phone and all other process monitoring, see if it can locate what is taxing your cpu.
https://play.google.com/store/apps/details?id=com.zomut.watchdoglite&hl=en_GB
John.
Tinderbox (UK) said:
Try installing Watchdog, and in the setting include phone and all other process monitoring, see if it can locate what is taxing your cpu.
https://play.google.com/store/apps/details?id=com.zomut.watchdoglite&hl=en_GB
John.
Click to expand...
Click to collapse
Thank you, I will try it. Very helpful. I'll post how it's gone.
Tinderbox (UK) said:
Try installing Watchdog, and in the setting include phone and all other process monitoring, see if it can locate what is taxing your cpu.
https://play.google.com/store/apps/details?id=com.zomut.watchdoglite&hl=en_GB
John.
Click to expand...
Click to collapse
Hi John, it looks like that option doesn't work. I see that none of apps exceeds CPU usage over 10%, but the clock still goes on 1.7GHz etc. Sometimes it cools down, but it happens rarely.
Did you adjust the setting to monitor all phone processes, even if you have an wifi only tablet still do this.
John.
Thejungle said:
Hi John, it looks like that option doesn't work. I see that none of apps exceeds CPU usage over 10%, but the clock still goes on 1.7GHz etc. Sometimes it cools down, but it happens rarely.
Click to expand...
Click to collapse
Tinderbox (UK) said:
Did you adjust the setting to monitor all phone processes, even if you have an wifi only tablet still do this.
John.
Click to expand...
Click to collapse
Sure, but the app doesn't seem to have any options button anywhere, just 3 tabs... sorry. However I can see it is monitoring all system apps also, if it helps.
it`s been a while, i will install it on my T800
John.
Thejungle said:
Sure, but the app doesn't seem to have any options button anywhere, just 3 tabs... sorry. However I can see it is monitoring all system apps also, if it helps.
Click to expand...
Click to collapse
---------- Post added at 10:40 PM ---------- Previous post was at 10:37 PM ----------
Hold the button left of the home button down to get the settings, the left touchkey button hold it down to get settings.
John.
Thanks but umm.. nothing happens. Tried holding down task switch capacitive button for few seconds on every tab, but it just goes to task switch view.
Strange, I just hold the button down and within 2 seconds the strip along the bottom of the display appears, maybe you are in the wrong mode, there are three section on the top of the screen, you need to select the far left one called STATS.
John.
Tinderbox (UK) said:
Strange, I just hold the button down and within 2 seconds the strip along the bottom of the display appears, maybe you are in the wrong mode, there are three section on the top of the screen, you need to select the far left one called STATS.
John.
Click to expand...
Click to collapse
VERY strange. I did it on all 3 tabs, just nothing happens. Is it possible that app changes maximum frequency of my CPU? I don't believe any app has possibility to do it on it's own...
Have you tried it again with watchdog on the same screen in my screenshot then press the button, watchdog does not change cpu frequency.
John.
I used to have the same problem on AOSP roms and some Touchwiz roms! When you first flash it and set things up, CPU usage is fine. But after a few days maybe hours, CPU would do the same exact thing like yours! Then my device gets hot and drains battery.
I found this to be a problem with AOSP 5.1.1 roms. Resurrection remix, CM12, PAC ROM and yeah. Never had problems on Cm11. The only ROM that solved my heating issues and no cpu problems are AOSP roms on 5.0.2 or Liquid Smooth rom. 5.0.2 was bug free. Liquid Smooth ROM has an custom kernel which helps cool down the device and reduce the high CPU usage. Seems to be the only ROM without issues for me on 5.1.1. For Touchwiz roms, I just install skyhigh kernel and turn on hotplugging and CPU multicore power saving to solve heat issues. But really on Touchwiz roms, CPU is fine most of the time for me.
My device is SM-T800 BTW. This is what I found out from flashing many roms.
Sent from my SM-T800 using Tapatalk