A couple of times I was shocked to notice that the keyboard leds on my TP weren't shut down with the keyboard slid in. Since there is a slight gap between the keyboard and the screen, in a dark environment, looking at the TP's right edge, white light was clearly visible just 1-1.5 cm's above the stylus (display and the hardware buttons were OFF, so no, no light "bleeding" effect).
After promptly sliding the keyboard out and back in, the lights went out; actually they went out right when I started to move the keyboard, possibly indicating that there might be a loose contact somewhere. Once, I actually waited for the light to go out by itself; it certainly stayed on after the regular "timeout" value...
So, I wonder: if the contact that is supposed to cut the power to the keyboard when you slide it back in sometimes doesn't work, but the device thinks it's locked and doesn't "timeout" the leds anymore, can this be the cause of mysterious battery drains reported so many times on this forum? Sure enough it's quite hard to spot, especially if you're using a case for the phone. It would most certainly explain why battery drain varied on my device rather wildly even though the usage pattern hardly changed from day to day.
I tried reproducing the effect but it's quite hard (I'd say for my device it would kill the lights correctly at least 9 out of 10 times) and I didn't want to stress the sliding mechanism too much...
Anyone notice this?
Just so noone thinks I'm seeing ghosts, today, just after unplugging it from my laptop, eventhough the keyboard hadn't even been opened, I saw the leds were on again. Just to be sure this wasn't a "feature" I waited about 5 minutes and they were still ON. So yes, this is most definitely a bug and a quite serious one at that.
I took a photo with a friends phone camera (sorry for the low quality). The bright, white, dots seen in the pic are the leds from the underlying keyboard (the phone had always been shut, keyboard fully slid in: display and hardware keys were completely off and no, there was no light from the D-pad either).
I can now easily understand how, occasionaly, the battery managed to run out so quickly... Has noone noticed this before? Am I the only one with a potentially defective unit/keyboard contact?
Related
I got my Xoom (WiFi) yesterday... already noticing some weird touchscreen behaviour.
It seems to me that whenever the Xoom is laid down flat, there's a chance that the device will stop responding to touch presses properly. Instead of being able to press-and-swipe, it acts like I tapped the screen (eg, pressed my finger on the screen and then lifted it straight back off) or worse, it causes a screen press in completely the wrong position. When it starts happening, it keeps on happening, but picking the Xoom up and holding it vertical seems to fix the problem.
Half the time it seems fine laid down though, so I'm not sure if it's just coincidence that it stops working at the same time I put it down flat or not, or that maybe picking it up means my hand is in contact with the back of the screen and this somehow changes some sort of electrical variable in my hands that affects the touchscreen operation.
Anyone else seen the same issue? I'm thinking I may need to take it back but want to see if anyone else has experienced anything similar.
Chris.
ok.. judging by the lack of response on this, I may either be on my own or it's just something that nobody is noticing. I've been testing it a bit more - I wrote an app which can show each touch point on the screen so I can see how the screen press/drag is working. This is what I've found.
Holding the tablet upright, screen presses and movements are fine, however I've noticed that if I hold my fingers in the same place for a while, the touch points will prematurely end.
If I put the Xoom down on the couch, there is a strong likelihood that the touchscreen will become incredibly unresponsive. I have had it regularly show up phantom presses where touching one point of the screen makes it appear as if I have also pressed another point of the screen. I also cannot drag my fingers across the screen - the touch points stay where they are until I take my fingers off the screen completely, or they just disappear right away as if I tapped the screen.
When this happens, if I touch the side of the case with either a free finger or my other hand, the touchscreen starts working perfectly! Seriously! I'm not kidding, I've been messing with this thing almost non-stop for the past coulpe of days and it is consistently doing this. So - couch + little finger on side of case = working touchscreen. couch but no contact with metal case = malfunctioning touchscreen.
If I have the Xoom in Motorola's case, it seems to work fine. If I put it on a table, it's a bit buggy but generally works better than on the couch. Any sort of material seems to send it regularly into crazy mode. The only time I've noticed it doesn't do this is if I'm in contact with the device immediately before putting it down and then remain in contact with the screen.
Could some sort of static charge cause this? Is it possible that me touching the back of the case is effectively allowing it to 'conduct' electricity properly on the touch screen? I'm not all that familiar with how capacitative screens work other than I assume they measure capacitance from your fingers. Maybe a static charge could throw it off. Or maybe I have weird fingers.
Anyway, I'm pretty close to taking the Xoom back now. Just trying to figure out if it's actually faulty or whether they're all like it by 'design'.
sorry
need to post to remove my limitations sorry again
This could be a loose touch controller cable. Someone had similar problems and posted a how to fix this, search for it.
It happens with me too, it's incredible annoying when you are developing and the tablet is on your table for debugging..
Did you find how to fix it?
I have a serious unresponsive issue on my Xoom when charging. I've tried several different chargers, (all from Motorola) with no luck. Unfortunately all the ones I tried where at my house so I'm not sure if its a wiring issue in my house.
I also have a similar problem on my Droid Razr so I'm starting to think its definitely the wiring.
Anyone know about this issue or have any recommendations?
kiroiv said:
I have a serious unresponsive issue on my Xoom when charging. I've tried several different chargers, (all from Motorola) with no luck. Unfortunately all the ones I tried where at my house so I'm not sure if its a wiring issue in my house.
I also have a similar problem on my Droid Razr so I'm starting to think its definitely the wiring.
Anyone know about this issue or have any recommendations?
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Thats weird.. i owned xoom n droid razr too but i dun have any iissue
It could be a wiring issue (try another house, I guess), but a lot of devices are like that where the touch screen stops being as responsive when it's on a wall charger.
While taking notes in my calc class this morning, my screen suddenly started zooming in and out very rapidly for a second or two. Afterwards, my screen failed to recognize any touches besides the S-Pen. I noticed that one of the corners (Above the left speaker when held in landscape mode, I believe) of the tablet were fairly warm, which I'm assuming is the battery. Because of this, I wasn't able to zoom out while using S-Note (Although, at one point, I could zoom by sliding only one finger. I'm assuming the touch screen was recognizing the heat of the battery as one point, and my finger as another. This only worked once, and it was only for a second or two).
*I was taking notes for approximately 90 minutes, with "Power Saving" mode on and screen brightness set between 15% and 20%.
*S-Note's finger edit rejection setting was on, and I was recording audio while handwriting my notes.
*I tried using finger taps and slides outside of S-Note, and they weren't recognized. S-Pen worked just fine.
*After shutting off the tablet for 30 min, finger interaction was recognized again.
*The tablet was resting upon a protective sleeve when the event took place.
Has anyone else had similar issues? Should I look into an exchange/repair?
Thanks in advance for any responses.
I haven't had this issue. And some days i can take a few hours worth of notes during business meetings.
I never use the power saving mode- i have heard others have diff issues with it in power saving- not sure if this is what caused it. Additionally i have not had my battery feel hot even after a few hours of note taking.
Is this the first time you were taking notes this long? curious if you had the heat issue before...
good luck.
tonyz3 said:
I haven't had this issue. And some days i can take a few hours worth of notes during business meetings.
I never use the power saving mode- i have heard others have diff issues with it in power saving- not sure if this is what caused it. Additionally i have not had my battery feel hot even after a few hours of note taking.
Is this the first time you were taking notes this long? curious if you had the heat issue before...
good luck.
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This was not the first time I had taken notes for that amount of time, but was the first time I'd encountered the issue. I don't recall the battery getting that hot before, either. I'll turn off power saving mode and see ifnit happens again (though it won't be 'til next Fri that that I'll be repeating the same conditions. I'll post an update then).
Thanks for the reply.
I've done both but didn't have either issue. I've used it well over 2 hours taking notes in both power saving and regular mode, at over 60% battery. Do you have any mods or any changes in your kernel by any chance? Rooted? Also, this is the 8013, correct?
This inadvertent "zooming" is typically caused by your palm hitting the lower right hand quadrant of the tablet prior to placing your pen tip. This is a bug resulting from the normal zoom feature and has nothing to do with a hot battery.
Although not completely fixed in the leaked JB beta, it is much better. What they really need is a zoom bar as opposed to pinch zooming in the S-Note app. I agree it can be quite annoying.
The current solution is if this happens, pinch the screen back to 100% then place your pen tip down on the screen prior to resting your palm. Another option would be to rest only your pinky finger on the screen while writing as opposed to your entire palm if in the bottom half of the page.
@sledgie:
My note is completely stock. Yes, it is the 8013 model. I forgot to mention that the tablet was resting on top of a protective sleeve. Could this have possibly enhanced the heating of the battery via insulation?
@Mitchellvii
Thanks for the tip. However, I am already aware of palm rejection and it's inconsistencies (I'm happy hear it's been improved in the leaked update). The event of the rapid zooming (in and out) took place when my hand was away from the screen. Also, the lack of responsiveness from any further finger interaction (Pinching, tapping, and sliding) leads me to believe there was some sort of physical interaction taking place between the screen's sensor (excluding the wacom sensor) and hardware, especially due to the issue's application throughout the Android OS outside of S-Note. Also, the single finger zoom event suggests that there was another touch point being triggered. I could only surmise it to be the heated battery, and the cooling of the battery remedying the issue lends itself to my theory.
Thank you both for the replies.
My HTC Sensation wont turn on... properly.
When booting, i get a black screen. Around the edge of the screen i can see the backlight is on both when just on the battery as well as while plugged in, but i get nothing displayed, just ablack screen. It vibrates like normal when i power on, but nothing, black screen.
I do not belive this is software related however, because for all intents and purposes, the phone is booting just fine. However, nothing gets displayed to the screen.
For instance, when i call it from a different phone, it rings... and because i know where the buttons "should be" i swipe to answer the phone as i would normally, and it answers the phone, and i can hear and use the phone just fine. But again, NOTHING is displayed on the screen, i can only answer the phone, because my fingers know where to touch and slide to answer the phone.
Also, when i boot with VOLDOWN, i get nothing. So it doesnt appear to be a software issue, at least from what i can gather.
Im at a complete loss here, and really have no clue. I am very laman when it comes to hardware. I have opened it up (removed the tiny "void" sticker from a screw head, removed 6 screws, removed the lastic backplate (not the battery cover, the plastic plate that holds the battery), and just generally took a look at it. I really dont know what im doing here, so i havnt really done much further than this. Everything "LOOKS" okay, nothing seems out of place, broken, wires are all attached, it looks fine from what i can tell.
Theres no moisture, theres no residue, there what i couldnt consider excessive dirt or dust or debri (at least anything i wouldnt ocnsider normal after hivng the phone a year or whatever).... so im really at a loss here, and not sure what it could be.
Hoping maybe someone else ran into this problem and has had it resolved... but "search" and "google" hasnt turned anything up..Any help would be appreciate... Thank you in advance.
I just noticed, when i take the battery, an di simply make contact with the contacts, the backlight (the dim light around the edge of the screen, i assuming its the backlight) lights up. Pull the battery, nothing, toch the battery to the contacts, backlight turns on.... without ever pressing the phones power button or nothing. I do not remember this being the case before, and i would assume this would not be normal operation. With the phone not turned on at all (coming from a fresh battery pull), i just touch the battery to the contacts, or put the battery in, the phones backlight i wouldnt think, should come on and stay on like it is, no?
I had similar issue after my phone fell down face on. Had to replace the display unit to get resolved.
I received my XT926 as a refurb and I have been experiencing a strange screen issue.
I will often have my phone on a dock, charging and sometimes I will notice the screen is black like it's off, but the touchscreen is responsive. Hitting the power button does nothing but it makes the sound as if I had locked the phone. Hitting the power button a second time will turn the screen on like normal operation.
Very rarely I have noticed the screen will turn off while I'm actually using the phone and it's a weird effect. The easiest way to describe it is that it looks like entire lines disappearing randomly over a period of 1-2 seconds, going from all visible, then to all black, kind of like slatted blinds being closed, but at random. After this, it displays the same symptoms as if I had found the screen off while in a dock/charging.
Now, I don't want to say it's related, but I first started experiencing this on the Stock KitKat update from Verizon. I am currently using Cyanogenmod 12 nightlies and I am experiencing the same issue. It seems to be happening with greater frequency.
I have also experienced the blue screen effect when certain animations/elements/apps are up on my screen, but I think they are unrelated.
Also, there is a faint discoloration bar about 2/5ths of an inch thick uniformly vertically from top to bottom of my phone on the righthand side (just under where the notification bar would be if turned horizontal).
I've tried to find more information about this but my search results have been relatively lackluster (90% of the results are trying to sell me the phone or specification pages)
So I'm breaking down and turning to here. Does anyone know what's going on here? My current theory is that my screen is going bad. I have no intention of replacing the screen on this phone (would rather just buy a new one), so any suggestions that don't involve physical hardware repairs would be appreciated.
I thought i was the only one experiencing it.
The screen turning off with a weird effect happens rarely but yeah it happens. And the blue screen effect, i noticed it only happens when im on the youtube app when the video stops working because of my connectivity issues.
Im not rooted nor is my bootloader unlocked. On the latest system version. Sounds like a software problem but hey im no expert.
kayonesoft said:
I received my XT926 as a refurb and I have been experiencing a strange screen issue.
I will often have my phone on a dock, charging and sometimes I will notice the screen is black like it's off, but the touchscreen is responsive. Hitting the power button does nothing but it makes the sound as if I had locked the phone. Hitting the power button a second time will turn the screen on like normal operation.
Very rarely I have noticed the screen will turn off while I'm actually using the phone and it's a weird effect. The easiest way to describe it is that it looks like entire lines disappearing randomly over a period of 1-2 seconds, going from all visible, then to all black, kind of like slatted blinds being closed, but at random. After this, it displays the same symptoms as if I had found the screen off while in a dock/charging.
Now, I don't want to say it's related, but I first started experiencing this on the Stock KitKat update from Verizon. I am currently using Cyanogenmod 12 nightlies and I am experiencing the same issue. It seems to be happening with greater frequency.
I have also experienced the blue screen effect when certain animations/elements/apps are up on my screen, but I think they are unrelated.
Also, there is a faint discoloration bar about 2/5ths of an inch thick uniformly vertically from top to bottom of my phone on the righthand side (just under where the notification bar would be if turned horizontal).
I've tried to find more information about this but my search results have been relatively lackluster (90% of the results are trying to sell me the phone or specification pages)
So I'm breaking down and turning to here. Does anyone know what's going on here? My current theory is that my screen is going bad. I have no intention of replacing the screen on this phone (would rather just buy a new one), so any suggestions that don't involve physical hardware repairs would be appreciated.
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i also have this with my referb i made moto give me my money back and they let me keep the phone for me it was very rare but my new phone also had a really bad screen all yellowish and bad white balance in low light if you are unhappy with it call them and say you are unhappy with the replacement here is the white glove number 800-653-7185 they are more understanding and nice but you may lose you ability to unlock your bootloader on the new phone if it comes with the latest software just a warning
I have that screen off with lines slowly disappearing thing, too And, yeah, it's also a refurbished one, bought from one of the sellers on aliexpress... I thought Lollipop was the culprit or something like that. Oh, well... It rarely happens. And luckily I only have that, not the second issue you mentioned
I am having this exact same issue. The weird lines-to-black screen thing, and the flickering blue screen when watching video. Are you saying the solution is to call Motorola and ask for a new phone?
The blue flickering can be prevented by going into Developer Options and checking "Disable HW Overlays".
The discolored stripe on the screen sounds like burn-in; these AMOLED screens are much more susceptible to burn-in than the LCD screens used in older phones. Whomever owned the phone before it was returned to Motorola probably had something running on their screen continuously with a bright-colored bar at the top, likely in a car or desk dock. The screen is very easy to replace yourself with an eBay part, if you're inclined; it involves 2 screws and 2 connectors.
I've seen the lines-to-black thing exactly twice since I got this phone refurb two months ago. Sorry, I don't know what causes it or how to avoid it, but the workaround is quick and simple enough that I'm not worried about it, yet.
So i've been having a lot of issues with my N5 lately, mostly small stuff like general slowness, poor battery life, not surprising on an almost 3 year old phone. I also lose cell service way too frequently (not an issue with my carryer, all my friends are on the same network and are fine). Camera won't focus anymore (though im pretty sure this was my fault, probably broke it while taking it apart). I'm pretty sure the battery connector on my motherboard is damaged. I've had many problems with the battery reading its temperature as -30 C (battery heath "cold"), i've replaced the battery 4 times now and i still get that problem every now and then. Pushing on the connector fixes it temporarily, so im pretty sure some pin is bent slightly out of place and i don't know how to fix that. It recently started having this issue where just moving or bumping the phone the wrong way would cause the phone to shut off. Probably an issue with the battery connector again. I tried fiddling with it but it didn't do much.
The other day i turned it on and the LCD was backlit, but black except for one single vertical white line. Rebooted and it looked normal. Few hours later i got really pissed off with it for shutting off in the middle of an important text and threw it at the wall (not the best idea i know). Screen was already cracked so i didn't really care. Ever since then the LCD has been a real pain in the ass. i can turn the phone on but there's nothing on the screen. Ii get haptic feedback when the Google logo would up, and the notification LED is flashing like i have a message. The backlight is on and pushing hard on the cable connecting the motherboard to the daughter board i can see it start to turn on, (Google logo, few seconds of boot animation) but then back to black (while still backlit).
I can post photos if it would help diagnose/fix this, my phone is my main camera and i don't want to bother anyone if i don't have to.
Anyone know any tricks that might squeeze another mouth out of this dying phone? Any response is appreciated, Thanks!
The issues could have been related to the power button or physical internal damage. My suggestion: replace the screen with a cheap 3rd party screen if the internal components are still working. This will give you more time with your existing phone and allow you to have a working backup.