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Hello, I am having some touchscreen problems with CM9 and 10, but not with webOS. Namely, I think that the tablet is detecting double or even triple taps when none are present.
In CM9, when I execute a longpress (to move an app for example), the tablet just kind of... spazzes out, and in general nothing happens. In CM10 it also does this, and almost everytime, it starts whatever app I was pressing on.
Also, when I try to type in the CM10 keyboard, 2-4 characters are being entered at a time, unless I touch incredibly lightly, and even then, I will often get two.
There are other symptoms along these lines, like trying to pull up the notifications, etc. This does not appear to be isolated to any one portion of the screen, it is happening everywhere I could check it.
This CM9 versions I have tried are the nightly 0715, and whatever the latest nightly was about a week ago. The CM10 version I am using is jcsullins' 12/16.
As stated, I have zero issues in webOS.
Is there any way to change the touch sensitivity? Am I a moron and doing something wrong?
Thank you for your help/advice.
To clarify, I think this might be two separate issues...
I'm not as concerned with the CM9 issue, as it is only a mild annoyance and everything else is outstanding. CM10 is virtually unusable, however, so I'm hoping someone can help me out there.
thatdumbguy said:
Hello, I am having some touchscreen problems with CM9 and 10, but not with webOS. Namely, I think that the tablet is detecting double or even triple taps when none are present.
In CM9, when I execute a longpress (to move an app for example), the tablet just kind of... spazzes out, and in general nothing happens. In CM10 it also does this, and almost everytime, it starts whatever app I was pressing on.
Also, when I try to type in the CM10 keyboard, 2-4 characters are being entered at a time, unless I touch incredibly lightly, and even then, I will often get two.
There are other symptoms along these lines, like trying to pull up the notifications, etc. This does not appear to be isolated to any one portion of the screen, it is happening everywhere I could check it.
This CM9 versions I have tried are the nightly 0715, and whatever the latest nightly was about a week ago. The CM10 version I am using is jcsullins' 12/16.
As stated, I have zero issues in webOS.
Is there any way to change the touch sensitivity? Am I a moron and doing something wrong?
Thank you for your help/advice.
Click to expand...
Click to collapse
I've not had this issue, but this might help. Go here : http://goo.im/devs/jcsullins/cmtouchpad/testing
Download the touch pressure utility (should be the last one) and flash it. Hope it helps.
Good luck.
As an update, after shelving the touchpad for a few months, I have revisited it, and, after doing a clean install of jcsullins' CM10.1 w/BT Fix (20130808), the same issues as above still persist. I've done the following, although I didn't really expect most of them to work:
Switching to stylus mode (no difference)
Changing the accessibility settings for touch & hold delay
Even went so far as to install another launcher (nova) to ensure it wasn't trebuchet (not that I think it was)
Same for the keyboard
This has never been an issue I've seen in webOS... additionally, I don't remember ever having any issues in CM7 either. I did play with webOS for some time today to make sure it wasn't some kind of hardware failure between now and the last time I used it frequently, but I failed to reproduce the problem there.
Is there any light someone can shed on the subject? Thanks!
Thanks for that Chicle_11... I don't know why I failed to mention it, but I did also try the patches with CM9, but it is to my understanding that they were rolled into cm9 nightlies at some point?
I wonder if I could be having a minor hardware issue that just isn't severe enough to display in webOS, because I can't seem to find anything else about this, especially the keyboard problem with CM10. Its bizaar for sure.
Started experiencing the same issues after upgrading from cm9
I recently upgraded from cm9 to cm10.2 and immediately noticed this issue. There were no such issues with cm9. When swyping on the keyboard (any - Google, Swype, etc.), the system registers that I lifted my finger, and so garbage gets typed - you can also see the effect in the trace. When typing instead, letters sometimes double-up for a single press. When playing games like PvZ2, dragging a plant results in a release of the plant before I've lifted my finger, and sometimes the plant gets planted across the screen from where my finger is pressing.
Hey,
So my dad isnt exactly satisfied with the custom ROM I flashed on his device, he needs to wait about 4 - 5 seconds (!) when theres an incoming call for the screen to turn on. The ringtone will keep on going off during that few seconds, but the screen will be black.
So I tested it on my Nexus 4, and no such issue has been spotted by me. Although, on his device, no matter how many times I tried, the issue was never gone and I had to wait a couple of seconds for the screen to turn on so I could see who's calling.
I'm not sure whether it is a kitkat issue or not, I tried 2 different roms, first BeanStalk, and now CyanFox, both had the same issue.
I also tried to flash CM10.1, but the keyboard kept on crashing after a fresh flash, wipes didnt help (maybe someone could give me a hand here?).
Another question is, where can I find some good call recording app? the ones from the play store aren't good, they only record one side of the call, never both
tl;dr:
is there some setting that I should change for the screen to turn on quicker when theres an incoming call on kitkat?
what to do if I want to downgrade from kitkat to jellybean?
is there some GOOD call recorder app around?
thank you
Pawelss said:
Hey,
So my dad isnt exactly satisfied with the custom ROM I flashed on his device, he needs to wait about 4 - 5 seconds (!) when theres an incoming call for the screen to turn on. The ringtone will keep on going off during that few seconds, but the screen will be black.
So I tested it on my Nexus 4, and no such issue has been spotted by me. Although, on his device, no matter how many times I tried, the issue was never gone and I had to wait a couple of seconds for the screen to turn on so I could see who's calling.
I'm not sure whether it is a kitkat issue or not, I tried 2 different roms, first BeanStalk, and now CyanFox, both had the same issue.
I also tried to flash CM10.1, but the keyboard kept on crashing after a fresh flash, wipes didnt help (maybe someone could give me a hand here?).
Another question is, where can I find some good call recording app? the ones from the play store aren't good, they only record one side of the call, never both
tl;dr:
is there some setting that I should change for the screen to turn on quicker when theres an incoming call on kitkat?
what to do if I want to downgrade from kitkat to jellybean?
is there some GOOD call recorder app around?
thank you
Click to expand...
Click to collapse
If you still on cm10.1 then download keyboard from market and you are good to go Also stock 4.1.2 has this lag issue when incoming call its pretty annoying really
tuncay_93 said:
If you still on cm10.1 then download keyboard from market and you are good to go Also stock 4.1.2 has this lag issue when incoming call its pretty annoying really
Click to expand...
Click to collapse
hey, thanks for your reply
actually no, STOCK 4.1.2 didnt have this issue, it started to show when I flashed 4.4.2 on it, is there some sort of fix for this or do I have to downgrade to JB? I'd rather stick to KK as I prefer it more.
on the other hand my dad hated google hangouts and he wants the stock messaging app back, I guess I can only go with CM
also I cant install a keyboard from the market, because I cant even log in to my google account, I cant get through the setup without a few things crashing over and over again, every second or so. the keyboard doesnt even show up
delete the latinIme.apk from the zip file you are trying to flash and substitute it with one from the other roms you tried flashing.
I know how to control the delay with which the ringer starts but not screen :s
These commands I think only help when call ends but it doesn't hurt to try, add them (or check the values if already present)
to build.prop in zipfile before you flash it
Code:
ro.lge.proximity.delay=5
mot.proximity.delay=5
I am on kitkat right now and have no lag issue...have you tried changing kernel?
Rudjgaard said:
delete the latinIme.apk from the zip file you are trying to flash and substitute it with one from the other roms you tried flashing.
I know how to control the delay with which the ringer starts but not screen :s
These commands I think only help when call ends but it doesn't hurt to try, add them (or check the values if already present)
to build.prop in zipfile before you flash it
Code:
ro.lge.proximity.delay=5
mot.proximity.delay=5
I am on kitkat right now and have no lag issue...have you tried changing kernel?
Click to expand...
Click to collapse
hey, thanks for your reply
I flashed Nameless ROM and surprisingly the lag issue is gone, and due to stripped gapps I flashed, I got the old messaging app back, which is quite the perfect combo, now the only thing I am missing is a good call recording app, is there a chance you can suggest one to me?
thanks again!
Pawelss said:
hey, thanks for your reply
I flashed Nameless ROM and surprisingly the lag issue is gone, and due to stripped gapps I flashed, I got the old messaging app back, which is quite the perfect combo, now the only thing I am missing is a good call recording app, is there a chance you can suggest one to me?
thanks again!
Click to expand...
Click to collapse
Still havent tried nameless but i did red the thread about it. Seems everyone likes it. It should be good
tuncay_93 said:
Still havent tried nameless but i did red the thread about it. Seems everyone likes it. It should be good
Click to expand...
Click to collapse
well I tried it out, the rom is nice and all, but my phone is extremely slow, the lag issue with phone calls is back, sometimes turning the screen off is impossible, or takes up to 2 minutes (!). turning it back on isnt much better either, I dont know what the problem is, the same thing happened on the BeanStalk ROM so I assume it isnt a software issue, but a hardware one, do you have any ideas what could be the problem and how can I solve it?
I want to tell you my experience about custom roms.
I don't know if you tried this combo: CM11 + kicos kernel (modified iodak's kernel) + minimal PA gapps
I works for me very well.
LGaljo said:
I want to tell you my experience about custom roms.
I don't know if you tried this combo: CM11 + kicos kernel (modified iodak's kernel) + minimal PA gapps
I works for me very well.
Click to expand...
Click to collapse
yeah, but shouldnt all the 4.4.2 ROMs be quite snappy? doesn't kitkat reduce the hardware requirements? why would JB work fine (or so I think, I'll go back to stock in a few mins and see) and KK be laggy as hell?
I've got a theory, I'm not a hardware guy and I dont know if I'm right or not, but:
could be that one of the cores is damaged and the system tries to switch some tasks to the damaged core (if android handles different cores the way I think) and that core doesnt really work the way it should, causing the entire system to work like a granny?
Pawelss said:
well I tried it out, the rom is nice and all, but my phone is extremely slow, the lag issue with phone calls is back, sometimes turning the screen off is impossible, or takes up to 2 minutes (!). turning it back on isnt much better either, I dont know what the problem is, the same thing happened on the BeanStalk ROM so I assume it isnt a software issue, but a hardware one, do you have any ideas what could be the problem and how can I solve it?
Click to expand...
Click to collapse
This is probably some wake/lock problem with software. Also on my o2x i've noticed strange lag when i press the power key it has lag until the screen comes on buttons below the screen light and after a couple of seconds the screen. It has 4.3 CM rom there if your father is using this phone i would suggest you some stock based rom with custom kernel. They should not have problems like these.
tuncay_93 said:
This is probably some wake/lock problem with software. Also on my o2x i've noticed strange lag when i press the power key it has lag until the screen comes on buttons below the screen light and after a couple of seconds the screen. It has 4.3 CM rom there if your father is using this phone i would suggest you some stock based rom with custom kernel. They should not have problems like these.
Click to expand...
Click to collapse
That still the best sollution for him - optimized kernel with stable ROM. He probably isn't techno freak?
tuncay_93 said:
This is probably some wake/lock problem with software. Also on my o2x i've noticed strange lag when i press the power key it has lag until the screen comes on buttons below the screen light and after a couple of seconds the screen. It has 4.3 CM rom there if your father is using this phone i would suggest you some stock based rom with custom kernel. They should not have problems like these.
Click to expand...
Click to collapse
could be, however, it isnt only for the power button, when the screen is off and a call is coming, it needs a few seconds for the screen to turn on, after the call is done, the system is all choppy and laggy. Turning the screen off after that is also nearly impossible, due to power button malfunction. I went back to stock for now and I'll see if the lag is gone, if it isnt, then its probably a hardware issue.
edit:
yeah, I'm on stock 4.1.2 and the issue isnt gone.
crap.
sounds like a problem in the timing the processor uses for scaling frequencies...
hav no idea what could be causing it unless you have some kernel tweak app and set wrong values
Have you tried clean flashing the Roms you installed? Have you Factory-Reset, Cleared cache, cleared Dalvik cache, and maybe did a system partition format before flashing?
Inviato dal mio GT-P3110 utilizzando Tapatalk
OmniROM
Lollipop - Android 5.x
A new "unified" Galaxy Tab 2 section was added to our forum because we don't make a difference between p31xx an p51xx specific roms.
Please use the Thread here for Omni 5 related questions and feedback
Reserved
Downloads:
Unofficial Builds by me
ROM Downloads for all supported devices can be found here
SuperSU http://download.chainfire.eu/supersu
GApps:
by @Deltadroid http://forum.xda-developers.com/android/software/app-minimal-gapps-gapps-lp-20150107-1-t2997368
or http://forum.xda-developers.com/android/software/gapps-google-apps-minimal-edition-t2943330
Can't wait to try this out. Loved omnirom ROM 4.4.4 on my tab until I tried your recent SlimLP ROM on it
Sent from my Nexus 5 using Tapatalk
New builds late this evening
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Android-Andi said:
New builds late this evening
Click to expand...
Click to collapse
Will definitely try this out - Omni 4.4.4 was perfect - I expect nothing less here (over time of course). Thanks Andi.
Builds are up
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FYI... Cant get it to boot! First tried with dirty flash from SlimLP then a clean... But no luck. Get stuck on bootscreen...
cheeseous said:
FYI... Cant get it to boot! First tried with dirty flash from SlimLP then a clean... But no luck. Get stuck on bootscreen...
Click to expand...
Click to collapse
Likewise with a P5113 here, booted first time after clean flash with pico Gapps and supersu 2.40... but after first reboot and 2 force reboots... still hanging on boot screen with a blank faced android blinking and wondering. Black to SlimLP for now. Thanks again Andi.
Lolli!
I installed the latest build and its working great in my P5110
I didn't even had any major bug yet (Only clock app not working)
Android-Andi said:
Builds are up
Click to expand...
Click to collapse
Reporting: Did an update from last years version.
Wiped C + DC
Flashed Rom + SuperSU
Rebooting .... took approx. 7 minutes ... done
Settings done,
Reboot,
Stuck at boot logo ... left for about 15 minutes
Wiped C + DC again,
Rebooted successfully this time.
Used for an hour or two, than reboot again, stucked at boot logo again...
After wiped C + DC again without no apparent reason: Booting successfully.
Restoring SlimLP with TWRP. Will test next build Andy when available.
@Gregzi thx for testing. I'll run new builds tonight...
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Testing Build 20150107
Testing latest build:
- Clean flash Rom + Gapps + Supersu 2.40
- Boot time reduced to 3 minutes
- Setting everything
- Noticed that SuperSU is this time correctly pushed into the system (in previous builds I had two:
one in Launcher and one in Settings ==> sometimes problems with root - TBackup)
- Shutting down the tablet
- Booting - again stuck at Omni boot animation (left it for about 10 minutes)
- Force reboot to TWRP (with two button combo)
- Reboot into the system from TWRP without cleaning anything
- Booting normally in 1 minute
When OC the frame rate is now 32,8 fps (Nenamark2), so better than previous builds, so certain progress is done.
The tablet feels smoother - especially noticeable when opening app drawer.
BR
installed over omni 4.4.4 without wipe.
first boot took about 40 mins, updating 173 apps.
some bugs:
firefox beta won't run
home button does not work
still collecting experience, but it doesn' t look too bad ?
Cheers and thanks alot, s.
sent over omni
sebastel23 said:
installed over omni 4.4.4 without wipe.
first boot took about 40 mins, updating 173 apps.
some bugs:
firefox beta won't run
home button does not work
still collecting experience, but it doesn' t look too bad
Cheers and thanks alot, s.
sent over omni
Click to expand...
Click to collapse
Home button gets fixed by flashing Gapps!
DarKnighT916 said:
Home button gets fixed by flashing Gapps!
Click to expand...
Click to collapse
thanks, but actually i had flashed Gapps (pico) already just after the ROM.
however, i'll try again later. :fingers-crossed:
in the meantime, i re-flashed gapps, with no change in behaviour.
for the time being, i'm back to 4.4.4.
bt issues
cannot connect bt headset. other features working fine, any toughts
only a question
I have a p5110 and runs pretty well but I've a problem with the minimum brightness it's very dark I can't see anything. any solution?
I loaded the 1/29 build last night on a clean install (with the latest Nano PA Gapps and SuperSU install zip, all on Andi's latest TWRP build). So far so good, here's a few observations:
-The first boot took a pretty long time but from what I've read this is normal. I didn't reboot again until the next day but for the second boot, the bootanimation never loaded, it just went straight from the brand logo to the launcher, long black wait in between. After that, all fine. Later I loaded the stock lollipop bootanimation I had been using previously (I do like the omni one a lot, though), and it used to lag a bit at the end on 4.4.4 but now it runs smooth all the way through, so that's encouraging.
-Turning the screen off (or letting it time out) is usually buggy, the screen flickers on/off for a second instead of any type of animation (I believe Lollipop is supposed to do a monochrome fadeout?) Edit: On closer inspection I see it is doing the monochrome fade, but then the screen flashes at the end of the animation.
-Re-installing apps was painfully slow and seemed to hang if I let the screen turn off (I'd find it sitting on the same install several minutes later). Downloading seemed a lot slower than KitKat ever was, too. I looked at the stats in settings->apps->running at on point in the process and the Play Store was listed as Restarting, perhaps this indicates poor memory management? Running the app in the foreground didn't seem to help at all, though.
-The material updates to the stock browser app are pretty swanky, I'm a fan. (I saw that in the gerrit and got excited. Not done yet but looks great.)
-Cast screen doesn't seem functional, doesn't find my chromecast. I've tested both Netflix and Localcast to connect just fine, LocalCast was a bit finicky the first time I tried but I think that may have been a network issue.
-I was testing a video call in in Hangouts and tried to mute the sound (was testing with my phone in hand and there was audio feedback loops because of that), but couldn't. Using the volume buttons, it wouldn't go all the way down, and if I dragged the bar the rest of the way it just wouldn't stick. Not sure exactly which volume control that was (lollipop's sound settings still confuse me in general), but I think it must be a bug of some sort that it wouldn't go down to mute.
-I had only just got around to trying to use my tablet's IR blaster (P5113) for TV control a few days earlier, and I found that the top several smart remote apps in the store don't work at all. Peel actually forces a soft reboot when it gets to the "push this button to test turning the device on" step, consistently. I did get one app working, which only includes remote IR support as a secondary function, TV Guide by Mini Group. Unfortunately the app isn't quite polished enough to be useful to me, but it was notable that it just worked where the others all get nothing. I didn't re-test all of the apps on lollipop but the ones I did(both of the ones linked here and a couple of the others that didn't work) behaved the same way.
-Visual performance generally seems a bit laggy but overall performance is fine (i.e. animations may freeze or lag but the tasks they're covering up don't suffer). Maybe all the animations in lolipop are just a bit rough on older hardware? I find them a bit overdone now that I've played around with things a bit more, personally (not that this reflects on the ROM). I don't really like stuff like shadows bouncing around as I scroll menus, though some of them are a nice subtle touch.
Overall I was happy with KitKat, but I think I'll let lollipop grow on me, these quirks are all minor. Idle battery life seems a bit worse but it's hard to make that call, I've been fiddling with the tablet more than usual to test things anyway.
Edit: Actually after letting it sit overnight unplugged, the idle battery is better than I was ever getting on KitKat. Granted, I made a point of closing all apps before and I think on KitKat I was having issue with casting apps holding wakelocks overnight and that's yet to be tested, but 1% over 12 hours is a pretty damn good baseline. Not sure what caused that wifi drop towards the end, after holding the connection (it gets a good strong signal) for about 11 hours, though.
Hey together!
Seems like we have some faulty eMMC chips, some reports of broken devices appeared.
I pushed a commit to address the issue and prevent other devices from damage.
I will recompile latest Lollipop roms and recoveries within 1 week.
For more information please read http://forum.xda-developers.com/showthread.php?t=3016879
Follow the instructions please to check your eMMC information.
Best regards and wishes!
Andi
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Internet sharing (mobile hotspot) doesn't work
I have been using CM11 for a while now and I am experiencing frequents hangs and hiccups. In particular the systems doesn't seem to be able to handle an installation, what I mean is that whenever I install or update an app the system hangs like if it can't handle a multitasking session, the systems freezes. Also, I ofent have my device frozen and I can't turn it on, the screen stays black for long periods, in the order of 5 minuts or more. I'd say this ROM is not functional. Is there anyone else who is experiencing the same problems? I am not sure whether the ROM is not working properly because of some setting I changed but well... I was thinking about going back to stock or to re-format and start over with a fresh CM11 because it might also be that I did something wrong. Any comment or suggestion, personal experiences? is CM11 working on your xperia sp's?
Cellulario said:
I have been using CM11 for a while now and I am experiencing frequents hangs and hiccups. In particular the systems doesn't seem to be able to handle an installation, what I mean is that whenever I install or update an app the system hangs like if it can't handle a multitasking session, the systems freezes. Also, I ofent have my device frozen and I can't turn it on, the screen stays black for long periods, in the order of 5 minuts or more. I'd say this ROM is not functional. Is there anyone else who is experiencing the same problems? I am not sure whether the ROM is not working properly because of some setting I changed but well... I was thinking about going back to stock or to re-format and start over with a fresh CM11 because it might also be that I did something wrong. Any comment or suggestion, personal experiences? is CM11 working on your xperia sp's?
Click to expand...
Click to collapse
It did start lagging after a few weeks and for me the recent button took forever (3 secs ! thats a lot since it never took that much long) to open recent menu. So I reinstalled it not knowing whether it was my fault or CM and to my surprise after a few weeks it did it again and I switched to PAC rom. Never looked back. IMO pac rom is the best experience of kitkat on sp.
Hi all, lurker here.
I've been having an issue with my OP3T that hasn't really phased me until now. From time to time my phone would lock up and crash (phone shuts down unexpectedly). I would have to manually reboot the phone by holding the power down button.
I am running on OOS Beta 10, rooted with Magisk 13, EX Kernel and whatnot. This has happened prior to being on beta channel and root as well. I've read somewhere that this is a hardware issue that arises from SD821 clocking up to max Freq which causes the crash but I think even with the custom kernel and underclocking I am still experiencing lock ups.
If there is a log I can provide for you guys I can post it, just don't know which one.
Thanks.
I too was experiencing lockups and reboots, turned out to be caused by Substratum theme engine, removed it and now phone works like a watch ?
pitrus- said:
I too was experiencing lockups and reboots, turned out to be caused by Substratum theme engine, removed it and now phone works like a watch
Click to expand...
Click to collapse
I don't have Substratum installed
Yes , am also facing similar issue...
I am getting a blank black screen.,that confusing me that it get locked up or does it switched off...
I think the problem is in beta system updates....
shivagajavelli said:
Yes , am also facing similar issue...
I am getting a blank black screen.,that confusing me that it get locked up or does it switched off...
I think the problem is in beta system updates....
Click to expand...
Click to collapse
Damnn, i've got the same problem.. blank screen with white light notif then off, when 3T not get random shutdown they give me random restart every 2-3mins, aarrgggghhh really annoying!
same problem with my devices
And then whats the solution for these problem? Arrggghhh
I've tried wiping system and reflashing OOS, with custom kernel and root. The problem hasn't come up (yet) so try that maybe.
dhuynh94 said:
I've tried wiping system and reflashing OOS, with custom kernel and root. The problem hasn't come up (yet) so try that maybe.
Click to expand...
Click to collapse
Anyway which kernel?
I have the same with stock and beta OOS, stock and bluspark kernel. Never rooted. I though that maybe i just press power button in my pocket but then it happend on the desk as well.
Similar issue, sometimes black screen with unresponsive buttons (they do vibrate), sometimes I can unlock it via fingerprint to the home screen but touch is unresponsive, only appswitch via recents button works but can't exit the app with home button, sometimes it just reboots.
Never had these issues from dirty flashing from open betas but now when I started clean these things began lol. Seems more laggy too.
dhuynh94 said:
I've tried wiping system and reflashing OOS, with custom kernel and root. The problem hasn't come up (yet) so try that maybe.
Click to expand...
Click to collapse
I just clean flashed all stock, pure without UBL, root but still same. Then tried to UBL, MAGISK + Franco Kernel, and still the same condition...
Ahhh i hate this phone! Really sucks
Hmm yeah I've had another crash but this just happened during boot.
Still have no idea what the possible cause is. Not aure why it's just us few that are experiencing this.
Maybe faulty hardware? Who knows
I used to have this problem when running the open betas for the 3t, I moved over to RR and there hasn't been any problems especially after the latest update
Edit. Also when turning on the phone the bootanimation (the two dots spinning around the thingy) it would freeze constantly, also fixed after moving to RR
My phone was crashed few times when using cameraMX application. I do not know reason, maybe last update fault? I have simple question, why we have beta version? Where is stable
Yeh I've had it freeze on multiple accounts while booting up. It would crash while the two dots are spinning and would need a hard reset.
Many times it would crash when entering my PIN for smart lock or lock screen as well..
Issue seems to have popped up again., after flashing OOS OB 14.
Most frequent symptom is after entering pin or unlocking device, at random times it would lock up Android and crash (shut down, not reboot). So I have to boot my device again by holding down power button.