Database Users

Problem: Screen Blackout - Buttons/Keyboard Unresponsive

The only thing I have done to this phone is root.
My phone several times today has had it's screen blacked out and cannot be awoken or used because all buttons on the phone become unresponsive. However, I know the phone is still working because it still receives notifications and I can hear it.
I have to take out the battery to fix this. Has happened about 5 times today.
Anyone else with this issue?

That certainly isn't normal. I would return it.

Also noticed that when using adb that it kicks my phone out after a certain time... something like 1 minute. Does this happen to anyone else?
I often have to do adb kill-server in order to see my device again.

I too have the same problem (though less frequently).
I have a rooted Epic using Joey Krim's method (raidagainstthecage-arm5.bin). I attributed it to the Overclock Widget which I have uninstalled to see if it gets any better. I like that widget for throttling down the CPU while the screen is off.
I guess it is best to start collecting data on this.
Phone was purchased at BestBuy.
Hardware version: D700.0.5
Anyone else seeing similar behavior? How about on a non-rooted Epic?

I was running SetCPU but uninstall the application and it was still happening to me. I have a feeling it has to do with the root method. My girlfriend's phone doesn't have root and it hasn't happened to her at all.
@jspielberg did you root via the one click method or manually with adb?

I rooted via adb.
Other root required apps installed:
Titanium Backup
Wireless-Tether Experimental (adhoc mode only working currently on the Epic it looks like)
Overclock Widget (now removed)
I think that is it for SU needed apps.

jspielburg did you use OS X by any chance to do your root? Couldn't get this thing to connect on windows so used my mac to root.

This happened to me not 30 minutes ago. And I'm 100% sure its root.
Sent from my SPH-D700 using XDA App

volcomjerk said:
jspielburg did you use OS X by any chance to do your root? Couldn't get this thing to connect on windows so used my mac to root.
Click to expand...
Click to collapse
I did indeed use my mac also for root via ADB...
I can't see how that would matter, but it is good data nonetheless.

Very odd. I have not had a single issue with a blackout, or unresponsive buttons after I rooted 11am yesturday. Then again, I removed most of the sprint bloatware, and removed more useless crap from startup. All the rooted app's are working as expected.

antidelldude said:
Very odd. I have not had a single issue with a blackout, or unresponsive buttons after I rooted 11am yesturday. Then again, I removed most of the sprint bloatware, and removed more useless crap from startup. All the rooted app's are working as expected.
Click to expand...
Click to collapse
Yeah everything is working fine. But I went to pick up the phone to make a call and it was dead. Complete blackout screen, not lights. Nothing.

@Fixter that happened to me too.
Everyone having this problem please state how you rooted. I have a feeling the EPIC doesn't like being on ADB through OS X or 64-bit OS's apparently.

I rooted Tuesday morning using Windows 7 32 bit mode, ran cmd as Administrator and followed Joeykrim's manual instructions.
I have had no problems with the screen being able to be turned back on and I have been on my phone performing various tasks for hours at a time.

volcomjerk said:
@Fixter that happened to me too.
Everyone having this problem please state how you rooted. I have a feeling the EPIC doesn't like being on ADB through OS X or 64-bit OS's apparently.
Click to expand...
Click to collapse
I rooted via ADB on 64-bit Ubuntu using joeykrim's method, not a single issue.
Sent from my SPH-D700 using XDA App

ImSoHungry said:
I rooted via ADB on 64-bit Ubuntu using joeykrim's method, not a single issue.
Sent from my SPH-D700 using XDA App
Click to expand...
Click to collapse
I rooted with One Click Root. Windows 7 32bit.

I rooted using quick root on Windows 7 then did a full reset after I started having problems and still am having problems with the screen not turning on unless I pull out the battery

Is there a way to undo the "one click root" I did from the instructions here on XDA yesterday?

I rooted last night via OSX 64bit and have not experienced this issue. But now i am very afraid...

killahkosha said:
I rooted using quick root on Windows 7 then did a full reset after I started having problems and still am having problems with the screen not turning on unless I pull out the battery
Click to expand...
Click to collapse
Wow, after doing a full reset without root I am not seeing problems yet but this post makes me worried that it's not just related to root or unrelated to root at all.

I did a full reset through the menu on the phone, I haven't tried doing one through the holding volume down while booting method but I will after work

Acer Solution for WiFi Issue

Anyone experiencing the endless loop WiFi situation, here is the solution from Acer level 2 support.
The resolution is to do 2 hardware resets in a row. While the tablet is on, and you are at the homepage, use a paperclip and push it into the hole under the full sized USB socket to reset the tablet. Allow the tablet to boot up and when it is completely restarted and you are back at the homepage press the reset button one more time.
When the tablet comes back up again you will have WiFi again and you should not have any problems going forward.
BTW, this has only been tested and verified on a STOCK tablet.

I have stock 100%. This did not work for me nor several others.
Sent from my A500 using XDA Premium App

I'm trying this right now as this problem just reared its ugly head... I'm not exactly stock, but I'm back to a stock Acer ROM after dabbles with VirtuousGalaxy (loved it) originally in hopes of getting the official OTA update. I'm so mad too, cuz I was just about to finally buy Titanium Backup so that I could play with ROMs more easily and not have to reinstall 100+ apps one-by-one...
Luckily, I took so long to ramble that all out that I'm almost done with both resets...
Survey says... no go... it's still just looping from Obtaining IP Address back to reconnecting, and I've tried connecting to multiple networks, even a mobile hotspot, even totally reconfiguring my router and to no avail... amazing how useless this thing becomes once it's severed from the net.

What the hell i have the same issue. This morning perfect tablet. This afternoon while at work turned into a POS...
Question?
If i hit the reset button do i loose all apps and stuff? I really dont want to loose anything since i have SOOO many apps I cant get back for free (amazon) and or all the 4-5 weeks of game play... yes constant game play including my kids.
update...just googled and YEP loose it all. Looking for other solution. WTF... Soo pissed right now

dasudevil said:
update...just googled and YEP loose it all. Looking for other solution. WTF... Soo pissed right now
Click to expand...
Click to collapse
You are mixing up a factory reset with the normal hardware reset.
The hardware reset by using the reset "button" on the bottom right of the tablet just reboots the hardware, very much like the reset button on a standard PC. Your apps and data will not be touched.

if you could get hold of the .40 update, it contains a file called fixwifi which could possibly help you.

Or, if you are rooted,
- Switch off wifi in the settings.
- open a shell and remove those two files:
$ su
#rm /data/misc/dhcp/dhcpcd-wlan0.lease
#rm /data/misc/dhcp/dhcpcd-wlan0.pid
- and switch wifi on again.
It might help. :-/

why dont you just root and back up your games and apps with titanium...than un-root it...

why not
dasudevil said:
What the hell i have the same issue. This morning perfect tablet. This afternoon while at work turned into a POS...
Question?
If i hit the reset button do i loose all apps and stuff? I really dont want to loose anything since i have SOOO many apps I cant get back for free (amazon) and or all the 4-5 weeks of game play... yes constant game play including my kids.
update...just googled and YEP loose it all. Looking for other solution. WTF... Soo pissed right now
Click to expand...
Click to collapse
why dont you just root and back up your games and apps with titanium...than un-root the tablet..if you want im just saying

_tachy_ said:
You are mixing up a factory reset with the normal hardware reset.
The hardware reset by using the reset "button" on the bottom right of the tablet just reboots the hardware, very much like the reset button on a standard PC. Your apps and data will not be touched.
Click to expand...
Click to collapse
Thanks and i could be. I always thought when hitting reset like that was resetting the device back to stock. I trust you guys at this stuff. I went technology stupid a few years back.
zoubidou said:
if you could get hold of the .40 update, it contains a file called fixwifi which could possibly help you.
Click to expand...
Click to collapse
would i not need to be rooted to apply this update?
caz70 said:
Or, if you are rooted,
- Switch off wifi in the settings.
- open a shell and remove those two files:
$ su
#rm /data/misc/dhcp/dhcpcd-wlan0.lease
#rm /data/misc/dhcp/dhcpcd-wlan0.pid
- and switch wifi on again.
It might help. :-/
Click to expand...
Click to collapse
I seen that, I am not rooted and the adb thing scares the crap out of me. I had issues back in the day with a MyTouch 3G (gold card crap)
youngv408 said:
why dont you just root and back up your games and apps with titanium...than un-root it...
Click to expand...
Click to collapse
To be honest I have lost all faith in my rooting ability. See above post on why.
Would love to get back into rooting things (MT Slide, MT4G, A500) but knowing my past experiences i would mess things up so bad its not save able. I was out of a phone for a week and had to pay someone to fix it. I dont think i can go through that again
Update: Cool it worked I had to turn off the lock screen first and after 6 resets I still have everything. Thank you for your patience and time.

caz70 said:
Or, if you are rooted,
- Switch off wifi in the settings.
- open a shell and remove those two files
$ su
#rm /data/misc/dhcp/dhcpcd-wlan0.lease
#rm /data/misc/dhcp/dhcpcd-wlan0.pid
- and switch wifi on again.
It might help. :-/
Click to expand...
Click to collapse
So weird to see this thread... I had this exact problem last night. I did a wipe and reinstall,and everything fixed itself. I'm glad you posted this because I figured it was a software problem. I'll give it a shot the next time it happens.

i Can confirm this worked after the second reset.... rooted using virtuous Picasso 1.0.8

All I have to do is forget the network and then just connect again...works every time for me
Sent from my A500 using XDA Premium App

caz70 said:
Or, if you are rooted,
- Switch off wifi in the settings.
- open a shell and remove those two files:
$ su
#rm /data/misc/dhcp/dhcpcd-wlan0.lease
#rm /data/misc/dhcp/dhcpcd-wlan0.pid
- and switch wifi on again.
It might help. :-/
Click to expand...
Click to collapse
I ran into the wifi scanning loop a couple of days ago.
It seems a bit extreme to go the hardware reset route.
I suspect most of us following the dev forum are already rooted and can do something similar to what I did.
I poked around with root explorer, blew out the dhcpd files, and hot booted.
Wifi is fine now.
Sent from my A500 using XDA Premium App

bleez99 said:
I poked around with root explorer, blew out the dhcpd files, and hot booted.
Wifi is fine now.
Click to expand...
Click to collapse
rebooting isn't necessary if you turn off wifi before deleting the files. in the process list there are two dhcp related processes
$ ps | grep dhcp
root 177 2 0 0 ffffffff 00000000 S dhcp_sysioc
dhcp 22869 1 900 444 ffffffff 00000000 S /system/bin/dhcpcd
i guess the dhcp_sysioc is controlled by android and that process in turn starts and stops the unix dhcp process. both are stopped when wifi is switched off in the settings.
when it's stopped the dhcp files are left. so either the dhcpcd process is killed with -9 or it doesn't handle the signal properly...

Hardware rebooting twice worked for me. I am running Picaso version 1.1.0 HC3.1
Thanks for all the suggestions everyone!

caz70 said:
Or, if you are rooted,
- Switch off wifi in the settings.
- open a shell and remove those two files:
$ su
#rm /data/misc/dhcp/dhcpcd-wlan0.lease
#rm /data/misc/dhcp/dhcpcd-wlan0.pid
- and switch wifi on again.
It might help. :-/
Click to expand...
Click to collapse
This worked great. Also you can use root explorer to navigate to same folder and remove thase files without adb
Sent from my SCH-I500 using XDA Premium App

I have tried this out on 2 machines we have an it has worked and I have not looked back since. I don't understand why someone with a stock unit would have an issue but you never know.

I just got this tablet yesterday. I flashed Acer_A500_4.010.22_COM_GEN1 from http://forum.xda-developers.com/showthread.php?t=1159443.
Last night and today WiFi worked great. Today out of nowhere I cannot connect to WiFi. It loops from obtaining IP address to reconnecting etc.
I tried to 2x reset method, this did not work.
I did root last night, but i didn't install terminal emulator or root explorer yet. dammit. so i'll have to get the APK's from my phone and put them plug the tablet into my desktop to get them.
Hopefully manually deleting the dhcp file fixes it.
I would really love the latest OTA that fixes the wifi issue
EDIT:
I got term.apk and pushed it, ran it, manually deleted the 2 files as mentioned, all working...for now.

caz70 said:
Or, if you are rooted,
- Switch off wifi in the settings.
- open a shell and remove those two files:
$ su
#rm /data/misc/dhcp/dhcpcd-wlan0.lease
#rm /data/misc/dhcp/dhcpcd-wlan0.pid
- and switch wifi on again.
It might help. :-/
Click to expand...
Click to collapse
That worked, with Root Explorer i didn't even have to terminal it. thanks hombre.

Phone Signal Bar

Does anybody know of a fix for the phone signal bar appearing in the status bar? I know this is entirely cosmetic but it looks odd on a tablet. I read somewhere back about replacing the systemUI.apk, but not sure if this works.
cm7 n241

I see it too sometimes, however it goes away after a fresh reboot.

The reboot is a very short term fix. I think they come back fairly quickly; like when the wifi reconnects.
The work-around is indeed to replace the SystemUI.apk.
http://forum.xda-developers.com/showthread.php?t=960542&page=547
has a post with a link to a corrected version.
I replaced mine by just overwriting the one in system\apps. This immediately gave a repetitive force close on the status bar, but a reboot sorted that out and the signal bars went away and everything else works normally.
If you are not comfortable with replacing it then wait for it to get fixed in a nightly.

bobtidey said:
The reboot is a very short term fix. I think they come back fairly quickly; like when the wifi reconnects.
The work-around is indeed to replace the SystemUI.apk.
http://forum.xda-developers.com/showthread.php?t=960542&page=547
has a post with a link to a corrected version.
I replaced mine by just overwriting the one in system\apps. This immediately gave a repetitive force close on the status bar, but a reboot sorted that out and the signal bars went away and everything else works normally.
If you are not comfortable with replacing it then wait for it to get fixed in a nightly.
Click to expand...
Click to collapse
hey, thanks, ill give it a try

bobtidey said:
The reboot is a very short term fix. I think they come back fairly quickly; like when the wifi reconnects.
The work-around is indeed to replace the SystemUI.apk.
http://forum.xda-developers.com/showthread.php?t=960542&page=547
has a post with a link to a corrected version.
I replaced mine by just overwriting the one in system\apps. This immediately gave a repetitive force close on the status bar, but a reboot sorted that out and the signal bars went away and everything else works normally.
If you are not comfortable with replacing it then wait for it to get fixed in a nightly.
Click to expand...
Click to collapse
Is that likely to happen?
Sent from my NookColor using xda premium

dragon_76 said:
Is that likely to happen?
Sent from my NookColor using xda premium
Click to expand...
Click to collapse
It got introduced by an 'improvement in nightly 234 or 235 I believe. As far as I can see there is no fix been applied to up to and including 241. But given there is a side fix for it I am hopeful it will appear in a nightly before not too long. It just needs to catch one of the devs eye's and work its way through the system.

If you guys are down with adb, it's usually safer to do this when replacing:
adb push SystemUI.apk /system/app/SystemUI.apk
adb shell chmod 644 /system/app/SystemUI.apk
adb reboot
. . NS4G . . CM7 . .

[Q] random reboots on my N10

Hi all,
for the last few days I keep having random reboots with my N10, as well as random lock-ups.
Started a few days after the 4.4.3 OTA update.
happens like this:
I'm trying to wake up my tablet with the power button but nothing happens so I have to reboot.
Or, I am just normally using my tablet ant it spontaneously reboots, without warning, and also without any kind of lockup before that.
What is really annoying is that after such a reboot the tablet is not actually usable: none of the normal autostart apps initialize properly;
flipboard doesnt refresh, calendar widget does not show any entries, mail widget does not show anything, etc etc etc.
I'm on stock 4.4.3, but rooted with SuperSU.
it did not start right after the 4.4.3 OTA, only a few days later (actually, i think on friday or saturday).
Is there a way to get into the system logs to see what is up?
...turn on auditing, maybe?
Any other suggestions that might help me? What kind of details do you need?

Hi,
It looks like someone got a possible solution. I didn't test because I don't face random reboots on my Nexus.
http://forum.xda-developers.com/showthread.php?t=2741084
~Lord

XxLordxX said:
Hi,
It looks like someone got a possible solution. I didn't test because I don't face random reboots on my Nexus.
http://forum.xda-developers.com/showthread.php?t=2741084
~Lord
Click to expand...
Click to collapse
...I'm not quite sure what I am supposed to do with that app... So I've installed it, and now?

[Lemmy] said:
...I'm not quite sure what I am supposed to do with that app... So I've installed it, and now?
Click to expand...
Click to collapse
Hi,
It looks like the person in the other thread set it to always display on notification bar, nothing other than that... As I said I didn't test so I can't tell you how possible it is for working or anything, sorry. I just gave this solution for now, if it doesn't work then I'd have to think a bit further .
~Lord

Random Reboot Help

So I have spent a lot of timing trying to figure out the lag on this phone after a bad experience recently with a custom ROM I changed my approach. I went back to the latest stock odexed ROM and I decided not to install xposed as unfortunately I have noticed it has added lag to my system after installing it multiple times.
However now that I have everything setup the way I want the phone is finally buttery smooth without any dirty hacks but now I am getting random reboots. I don't even know how to troubleshoot this problem I thought some apps might be to blame so I tried disabling a few but that didn't help. Worst part it that it is truly random no one situation seems to cause it. It will even happen when I am not even interacting with the phone at all for several hours.
I am rooted. Tried systemless but when I told TWRP not to write to system it would not honor this setting when flashing and always installed in system mode so I had to install a modified boot image. I'm not sure if that could potentially be the cause of my issue but I am really getting annoyed with this. I am just confused about the best way to try and troubleshoot this issue. Any advice is welcome

I too have a similar issue. My phone randomly shuts down(not reboot) whenever using any random app. Sometimes i get a battery indication of 0% and sometime it just shuts down. Very frequently aswell.

Are you getting anything in last_kmsg? When kernels crash they're supposed to write to it, but it doesn't seem to be there after 100% of crashes.
Check it with:
Code:
cat /proc/last_kmsg > /sdcard/last_kmsg.txt
Or by using an app like syslog.

Hmm with the command im getting "no such file or directory" and syslog is telling me i dont have root access or the commands failed.. hmm

tainger said:
Hmm with the command im getting "no such file or directory" and syslog is telling me i dont have root access or the commands failed.. hmm
Click to expand...
Click to collapse
Sorry. It's not always there even after a crash.

Welp now my phone does not power on / charge. I believe my phone has bricked itself or somehow the battery connection is loose. What are the chances that this is hardware related and the connector is Loose or disconnected?

You tried a different charger?

Yep, I've tried a few(0.8 amp, 2amp, computer) None seem to work and the phone doesnt get warm from charging.
I've seen that if you physically disconnect the battery connector and reattach it will fix some software issues. But i dont want to break apart my bamboo back