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[Q] Help! Random Reboots

I am getting random reboots and I am unable to figure out what is causing the problem and I have not found any thread about random reboots with the Captivate.

haojan said:
I am getting random reboots and I am unable to figure out what is causing the problem and I have not found any thread about random reboots with the Captivate.
Click to expand...
Click to collapse
Provide us with more information. Is your phone rooted, on a custom ROM maybe, what have you been doing to your phone, when did this start happening, etc.

History
I started with stock, rooted, non-market apps, unhelpful kernel v1.2, removed AT&T bloatware. LCD density @ 180. Tried One Click Lag Fix v1.0 and v2.2 and uninstalled. Juice Defender to manage 3G. Juice Plotter to track battery.
After messing around with it, I encountered a reset of the default launcher selection each time I long pressed the home button to bring up the recently used programs. I then did a hard reset and that fixed that problem. After the hard reset, my Captivate ran great! I found it responsive and fast enough without the need to try and apply any lagfix.
I then reinstalled my selected applications. My phone started to randomly reboot about once a day. I noticed Juice Plotter's data would be lost and it had to rebuild. It also happened to reboot on me once while I was using it. Other than that, it has not really affected my usability.

If it hasn't affected your usability, do you want to fix it?
If you do want to fix it, then the best way is to restore to Stock and add things slowly until you determine the problem. If you return to Stock and it still reboots, then you have a hardware issue.

It doesn't "quite" affect usability but it is not working "normally" either.
Was hoping to see if anyone else have experienced random reboots and how to troubleshoot it. If not, I will try out Odin one-click flash to stock...

HELP: Phone locks up and dies at random

I've been having a weird issue for the past few weeks where my phone will lock up and the screen won't turn on anymore. Often, it happens with the phone in standby in my pocket. I'll feel a vibration (sometimes just 1 vibration, sometimes followed by the usual 3 fast vibrations of a force close) and then the phone is gone. I have to hold all 3 buttons to reset it and then it boots up fine like nothing is wrong. I've had this same issue on various roms I've used lately (Serendipity, Firefly, Cog4, etc.) and on my last flash I've even done the full flash to stock and master clear. Is anyone else having any issues like this?
I'm guessing this is 1 of 3 things:
1) I have a hardware problem with my phone and need a new one.
2) This is an issue with custom kernels with lagfix and I have to live with it or use a stock kernel. I know some custom kernels have had charging death issues (I've seen that happen to me also but idk if its from charging or the same thing as when its in my pocket)
3) Some app I installed is causing this. I have a hard time believing this can be the problem only because any app issues I've seen in the past just show up as a FC and don't take out the entire phone. If this is in fact an app issue, IDK how I'll ever figure out which one is causing it since it just dies and I don't get a chance to see a FC message or anything like that.
Any thoughts or suggestions are appreciated as I really don't know what to do at this point. My next step is probably going to run pure stock froyo for a few days to see if I still have the issue but I suspect I will since its been present on every rom config I've used. Whats even worse is, if it happens and I don't notice for a while, when I finally reboot it the battery is severely drained. Its like something gets in an infinite loop and kills the battery depending on how long I leave it like that (the phone also warms up when its been in this state for a while).
Thanks in advance for any help!

Sounds like a warranty replavement to me.
Caution swyping! Read at your own risk.

TheSopranos16 said:
I've been having a weird issue for the past few weeks where my phone will lock up and the screen won't turn on anymore. Often, it happens with the phone in standby in my pocket. I'll feel a vibration (sometimes just 1 vibration, sometimes followed by the usual 3 fast vibrations of a force close) and then the phone is gone. I have to hold all 3 buttons to reset it and then it boots up fine like nothing is wrong. I've had this same issue on various roms I've used lately (Serendipity, Firefly, Cog4, etc.) and on my last flash I've even done the full flash to stock and master clear. Is anyone else having any issues like this?
I'm guessing this is 1 of 3 things:
1) I have a hardware problem with my phone and need a new one.
2) This is an issue with custom kernels with lagfix and I have to live with it or use a stock kernel. I know some custom kernels have had charging death issues (I've seen that happen to me also but idk if its from charging or the same thing as when its in my pocket)
3) Some app I installed is causing this. I have a hard time believing this can be the problem only because any app issues I've seen in the past just show up as a FC and don't take out the entire phone. If this is in fact an app issue, IDK how I'll ever figure out which one is causing it since it just dies and I don't get a chance to see a FC message or anything like that.
Any thoughts or suggestions are appreciated as I really don't know what to do at this point. My next step is probably going to run pure stock froyo for a few days to see if I still have the issue but I suspect I will since its been present on every rom config I've used. Whats even worse is, if it happens and I don't notice for a while, when I finally reboot it the battery is severely drained. Its like something gets in an infinite loop and kills the battery depending on how long I leave it like that (the phone also warms up when its been in this state for a while).
Thanks in advance for any help!
Click to expand...
Click to collapse
What kernel are you running? And are you OC/UV?
If so, try a different kernel (like speedmod k13e) that doesn't have OC/UV option. Black screen is usually a UV setting problem.
If it's not the case, warranty?
EDIT: Have you flashed over different ROM with lagfix/ OC/UV enabled?

Right now I'm running lastest Cog 4 with the included kernel (which doesn't support UV). I was OC but once I had this issue I reset the clocks to stock but then it happened again. Before I installed Cog 4 I flashed stock and master cleared...

1. Did u restore any data using TiBu when u flashed the ROM? Did u happen to restore any system data?
2. Did u put on any kind of under volting?
Flash any ROM, say Firefly, and use it for a day or two without restoring any of ur apps, and see if the issue is coming up again.
If yes, try changing kernel, say to onix, and keep on for a day or two see if the issue is recurring.
Just to be sure, can u do this:
1. Revert to stock
2. Format internal SD (similar to master clear to clear out SD card; I never did a master clear so far, only this)
3. Copy the ROM u want to use to SD
4. Flash Firefly 3.0 (this formats all system partitions, so no need to master clear)
Firefly has hardcore's kernel by default, and this kernel does not apply lagfix by default. Same with onix kernel too, and this is the reason I am recommending this combination of ROM and kernels. I use onix cos I have some wifi issues on hardcore's kernel.
5. Do NOT restore of ur data or apps

I did restore data using TiBu but only app data. The only system stuff I restored was bluetooth pairings and wifi access points. Other than that only app data. I don't have any UV right now...

TheSopranos16 said:
I did restore data using TiBu but only app data. The only system stuff I restored was bluetooth pairings and wifi access points. Other than that only app data. I don't have any UV right now...
Click to expand...
Click to collapse
I would NOT recommend ANY system data, except for contacts storage. This is the only one system data I personally found not to cause any issues.
Its easier to connect BT and wifi again, than go through the pain restoring this data sometimes creates. I faced issues with my phone not being paired to my car when I tried to restore bluetooth settings. It shows my car, but doesn't pair. I had to restart phone, delete the connection, and then reconnect. I found it easier to add back, than restore and go through all this trouble.
This time, pls try to refrain from restoring any of ur data from TiBu and a day's run for the ROM and see how it goes. If it goes well, u can restore data. But, before u restore data, I would recommend taking a nandroid backup just in case restoring apps starts creating issues again. This could save some time by getting u back to current state with no apps, instead of flashing all over again.

Before doing any of those things, I would check out your IMEI number and compare it to the one in this link,
http://www.captivateforums.com/sams...random-shutdown-issues-on-att-captivate-1272/
I dont pay for any warranty through AT&T, but I brought my phone in to a device replacement center and they replaced mine with a brand new phone!
Its worth a shot if you ask me.

[Q] Screen lags.

Hi, I have problems with my HTC Senastion screen:
from time to time it freezes and nothing can be done about that. I can still use "normal buttons", but nothing more. After some time it just "unfreezes" and everything is like normal.
Can this be due to overclocked GPU?
Also, I have discovered that it appears randomly after reboots: sometimes after reboot I experience this issue, sometimes not.
EDIT: Hmm, as I see, only some parts of UI are lagging. For example status bar is working ok (no always but still). Moreover, the buttons like: home, menu also are not responding.

Which launcher do you use?

Nova luncher.

Never happened to me,
your problem seems to be an Hardware issue..
you can try to restore your sensation with the Stock RUU and send it back to htc

I had this problem using an overclocked kernel. Reverting back to the stock 3.32.401.5 kernel fixed the random freezing and reboots.
I'm now using SebastianFM's 1.4.1 overclocked kernel and things have been fine. No random reboots or freezing/lag.

Anyone else with problems like this?

Recently put ViperXL on and took updates now its ViperXL 3.2.5, put kernel 3.4.10-ElementalX v5.0 vanilla on, flashed radio 2.41.,S-OFF.. Now the screen at times becomes unresponsive like when deleting apps,touch the app , it opens but it wont move or delete.IF I reboot, the screen behaves like it should for an unknown period then problem starts to repeat itself untill rebooting again. Another issue I noticed lately before flashing Viper is in TWRP , especially when rebooting, tapping the reboot button it wont respond for a short period,I might have to tap several times to get reboot to happen. I am wondering if I put too much on the system or might it be something internal?

leesumm said:
Recently put ViperXL on and took updates now its ViperXL 3.2.5, put kernel 3.4.10-ElementalX v5.0 vanilla on, flashed radio 2.41.,S-OFF.. Now the screen at times becomes unresponsive like when deleting apps,touch the app , it opens but it wont move or delete.IF I reboot, the screen behaves like it should for an unknown period then problem starts to repeat itself untill rebooting again. Another issue I noticed lately before flashing Viper is in TWRP , especially when rebooting, tapping the reboot button it wont respond for a short period,I might have to tap several times to get reboot to happen. I am wondering if I put too much on the system or might it be something internal?
Click to expand...
Click to collapse
delay with twrp reboot is normal. issues with custom kernels are pretty common as you are pushing your phone beyond spec and making the phone do things it wasn't really designed to do. imo the screen freezing is due to s2w but i could be wrong. i think you can turn s2w off in elemental, try turning it off and see if you still get freezing.

could be.
DvineLord said:
delay with twrp reboot is normal. issues with custom kernels are pretty common as you are pushing your phone beyond spec and making the phone do things it wasn't really designed to do. imo the screen freezing is due to s2w but i could be wrong. i think you can turn s2w off in elemental, try turning it off and see if you still get freezing.
Click to expand...
Click to collapse
This could be the trick. I tried this morning and so far today there hasn't been a hangup on apps. I tried a couple and everything as usual. But this has been a intermittent thing not knowing when or how it would happen.

Yeah I have found some of the Venom tweaks really affecting responsiveness. For example if you could figure power long press to turn on the flashlight it takes NOTABLY longer to wake the phone. I can see s2w having the same effect

Here I thought I was the only one experiencing this issue. I did a full wipe and format and flashed a bone stock (default configuration) flash of ViperXL to see if that would solve the issue. Screen issue doesn't occur as often as before bit it still happens. I found that if I block the light sensor, the screen begins to behave normally. I don't have a logcat yet but can upload if necessary.
Sent from my HTC One X using xda app-developers app

same problem again.
leesumm said:
This could be the trick. I tried this morning and so far today there hasn't been a hangup on apps. I tried a couple and everything as usual. But this has been a intermittent thing not knowing when or how it would happen.
Click to expand...
Click to collapse
I thought wrong , again, tried this morning just moving an app from home screen to second screen. It will open but unable to move it or delete it from the screen. Rebooted and seems everything is normal again.

Are you using 4x5 Rosie?
Sent from my VENOMized HoxL

area51avenger said:
Are you using 4x5 Rosie?
Sent from my VENOMized HoxL
Click to expand...
Click to collapse
Not really sure, I can't find anything that 4x5 is enabled. S2W I disabled also, this is not a big problem just irritating some times. Things usually start working normal when I reboot system .

You could try increasing the voltage.

ken bentley said:
You could try increasing the voltage.
Click to expand...
Click to collapse
At this point I am not sure I am that smart to be messing with volotage and such on the inside of this thing.

just stopped using a custom kernel. i stopped using them cause of freezing issues.

random freezes on my s6 edge

hello,
I'm having a problem with my G925F
it randomly freezes (sometimes) on any screen, mostly while playing games, until i force reboot it (vol down+power for 7sec)
ROM: the global elite 4.1
Kernel: ROM stock.
any help would be appreciated, i tried different kernels but still problem, is it a ROM problem or hardware?
UPDATE: I tried different Roms too, same problem..
when im with headphones and it freezes, it starts a loud sharp noise that'll rape your ear (that's how it really feels)
and some glitchy lines appear on the screen..
it stays frozen for like 5 or 6secs then it reboots itself with a white solid LED light...
pleas guys what's this problem???

anyone??? ☹

zinou111 said:
hello,
I'm having a problem with my G925F
it randomly freezes (sometimes) on any screen, mostly while playing games, until i force reboot it (vol down+power for 7sec)
ROM: the global elite 4.1
Kernel: ROM stock.
any help would be appreciated, i tried different kernels but still problem, is it a ROM problem or hardware?
UPDATE: I tried different Roms too, same problem..
when im with headphones and it freezes, it starts a loud sharp noise that'll rape your ear (that's how it really feels)
and some glitchy lines appear on the screen..
it stays frozen for like 5 or 6secs then it reboots itself with a white solid LED light...
pleas guys what's this problem???
Click to expand...
Click to collapse
Those glitchy lines are signs of hardware problems. Try flashing stock rom, if the problem persists, you'll know it's the hardware.

tiktakt0w said:
Those glitchy lines are signs of hardware problems. Try flashing stock rom, if the problem persists, you'll know it's the hardware.
Click to expand...
Click to collapse
I'm pretty sure its hardware too, but idk which part is exactly damaged?
i didn't drop my phone, water or dust didn't touch it in anyway..
the problem happens while playing PUBG Mobile or similar heavy games.
btw.. can battery cause such problems like this?

tiktakt0w said:
Those glitchy lines are signs of hardware problems. Try flashing stock rom, if the problem persists, you'll know it's the hardware.
Click to expand...
Click to collapse
It happened again, this time the device wasn't hot, no apps on background, no gaming, nothing. i was just on home screen swiping looking for an app, it suddenly froze. with those glitchy lines, rebooted itself with white solid LED light. i didn't use it for like 10min.. i came back again, unlocked it, swiped up for apps menu.. BOOM, froze again with those glitchy lines. this time it didn't reboot, it blacked out after 5sec.. i tried different button combinations to turn it on again, no luck. i plugged in the charger and waited for 2min, nothing. then i got into download mode [warning screen] (while plugged). i pressed the vol- button to restart, it booted up normally. now I can't really use it cause i don't want it to get worst. btw, sometimes when it freezes & reboot itslef, All settings are reset to default.
Any suggestions on what to do?

zinou111 said:
I'm pretty sure its hardware too, but idk which part is exactly damaged?
i didn't drop my phone, water or dust didn't touch it in anyway..
the problem happens while playing PUBG Mobile or similar heavy games.
btw.. can battery cause such problems like this?
Click to expand...
Click to collapse
I doubt it's the battery, but you'll never know unless you try. Glitchy lines or artifacts are usually the sign of a failing gpu.

tiktakt0w said:
I doubt it's the battery, but you'll never know unless you try. Glitchy lines or artifacts are usually the sign of a failing gpu.
Click to expand...
Click to collapse
okay.. but why it sometimes happens while doing nothing... and sometimes it doesn't freeze at all even while gaming for hours...
one more thing, when i shake thr phone near my ear, i hear something like (tick tick tick...). i taught that maybe that's it. but i asked my friend who has an s6e too (G925T) he said that he has that sound too when he shakes it, but doesn't encounter any problems with his phine... soo??

What I most associate with that sound, and the phone freezing... is CPU hotplugging. Are there any apps that affect these? /sys/class/devices/system/cpu/cpu./online
sys/class/devices/system/cpu/ whichever one isn't cpu 0-7 or cpuidle.

Bryan48765 said:
What I most associate with that sound, and the phone freezing... is CPU hotplugging. Are there any apps that affect these? /sys/class/devices/system/cpu/cpu./online
sys/class/devices/system/cpu/ whichever one isn't cpu 0-7 or cpuidle.
Click to expand...
Click to collapse
i have no idea.. how can I know which apps do this?
and what is CPU hotplugging??

zinou111 said:
i have no idea.. how can I know which apps do this?
and what is CPU hotplugging??
Click to expand...
Click to collapse
Which apps... maybe something related to "editing kernel settings", viewing CPU info (root), etc.
CPU hotplugging is the stopping (and returning when needed) of CPU cores (big cluster, etc), to save power, etc. When it fails, it does... that (maybe not the artifacts?).
/sys/devices/system/cpu/cpu[0-7]/online.
others related to CPU hotplugging...
/sys/devices/system/cpu/... ?
/sys/power/... ?
GPU hotplugging is /sys/devices/14ac0000.mali/power_policy (/sys/class/misc/mali0/device/power_policy). Writing "always_on" disables it, "coarse_demand" enables it, "demand" enables it. I haven't had any problems with this, only temperature reading.

Bryan48765 said:
Which apps... maybe something related to "editing kernel settings", viewing CPU info (root), etc.
CPU hotplugging is the stopping (and returning when needed) of CPU cores (big cluster, etc), to save power, etc. When it fails, it does... that (maybe not the artifacts?).
/sys/devices/system/cpu/cpu[0-7]/online.
others related to CPU hotplugging...
/sys/devices/system/cpu/... ?
/sys/power/... ?
GPU hotplugging is /sys/devices/14ac0000.mali/power_policy (/sys/class/misc/mali0/device/power_policy). Writing "always_on" disables it, "coarse_demand" enables it, "demand" enables it. I haven't had any problems with this, only temperature reading.
Click to expand...
Click to collapse
i don't have any apps of this kind, i used to have Kernel Auditor & Synapse in the past Roms cuz i was using custom kernels.. but now, im on stock kernel.
how can clear all kernel settings and start fresh?
however, it didn't reboot today. i was expecting it every time i use it. but no freezes or reboots.

zinou111 said:
i don't have any apps of this kind, i used to have Kernel Auditor & Synapse in the past Roms cuz i was using custom kernels.. but now, im on stock kernel.
how can clear all kernel settings and start fresh?
however, it didn't reboot today. i was expecting it every time i use it. but no freezes or reboots.
Click to expand...
Click to collapse
Kernel 'settings' are reset to the default (defaults may change after flashing a kernel) on reboot, unless there's a script (init.d, etc) that changes the settings on boot, or later. If it happens again, maybe the error messages are in /proc/last_kmsg.

Bryan48765 said:
Kernel 'settings' are reset to the default (defaults may change after flashing a kernel) on reboot, unless there's a script (init.d, etc) that changes the settings on boot, or later. If it happens again, maybe the error messages are in /proc/last_kmsg.
Click to expand...
Click to collapse
okay.. i flashed Aldeon this afternoon.
after booting, i installed Synapse. after opening it and granting superuser access.. it showed me the screen saying that kernel settings are reset ti default cuz system wasn't stable for 2mins after booting... this usually appear after it really happens...
its weird that it appeared after flashing the kernel directly...
no reboots or freezes so far, since yesterday.

zinou111 said:
okay.. i flashed Aldeon this afternoon.
after booting, i installed Synapse. after opening it and granting superuser access.. it showed me the screen saying that kernel settings are reset ti default cuz system wasn't stable for 2mins after booting... this usually appear after it really happens...
its weird that it appeared after flashing the kernel directly...
no reboots or freezes so far, since yesterday.
Click to expand...
Click to collapse
Hello @zinou111 how has your phone behaved after what you did? I am currently having the same issues you had and I'm looking for a solution.
Yours is the only hope after a couple hours of searching.

really? same symptoms as mine?
well... i didn't do anything at all... I turned it off and threw it for like 4 days... and last few days, i was bored, so i got it back and turned it on.. i faced this problem only 4 times within this week... i didn't do anything..
it used to be +10 times a day... now its just gone i think & i hope... it didn't freeze last 3 days & it works flawlessly!
i hope this can help you

Solution! And Cause!
I am not pretty sure uf it is a software or a hardware damage! But It can be :
1. After years of using your phone the battery power decreases and the voltage needed for cpus to work is not given anymore..
2. A permission file!
FIX for 1.:
- Install custom kernel(pos45) where you can change voltage
- Install Synapse or MTweaks
- Upvolt all values under 1000mHz to 800mAh in both big and small cores
- And youre done!
FIX for 2.:
- Install rom Ultimate Nougat S8+ Port v3.1
- This rom contains a fix for this issue!(I tested it it works!)
I recommend: Try FIX for 2. FIRST its more secure and dont blame me if you destroy your device!

ArkPly said:
I am not pretty sure uf it is a software or a hardware damage! But It can be :
1. After years of using your phone the battery power decreases and the voltage needed for cpus to work is not given anymore..
2. A permission file!
FIX for 1.:
- Install custom kernel(pos45) where you can change voltage
- Upvolt all values under 1000mHz to 800mAh in both big and small cores
- And youre done!
FIX for 2.:
- Install rom Ultimate Nougat S8+ Port v3.1
- This rom contains a fix for this issue!(I tested it it works!)
I recommend: Try FIX for 2. FIRST its more secure and dont blame me if you destroy your device!
Click to expand...
Click to collapse
thanks bro! but i don't think its a software problem, cuz i had it completely fresh & new last week, i mean the guy flashed it using those things called BOXs.. like.. i'm even getting OTA updates lol... still same problem..
but i left it like i said turned off for about 3 days & i can tell that it got better.... probably the CPU is failing i guess
i'll try the 1st solution when i face the problem again

Yes I can safely say...
zinou111 said:
thanks bro! but i don't think its a software problem, cuz i had it completely fresh & new last week, i mean the guy flashed it using those things called BOXs.. like.. i'm even getting OTA updates lol... still same problem..
but i left it like i said turned off for about 3 days & i can tell that it got better.... probably the CPU is failing i guess
i'll try the 1st solution when i face the problem again
Click to expand...
Click to collapse
Ok but I can tell you that for me both ways 1 and 2 worked! (S6 Flat by the way)
I installed the rom(Way2) and no crashes anymore without changing the voltages... On stock rom(odin clean installed) I still had random reboots and freezes!:victory:
But when you flash a custom kernel and changes voltages (Way1) also on stock no more random reboots!
So both ways worked try it out!

ArkPly said:
Ok but I can tell you that for me both ways 1 and 2 worked! (S6 Flat by the way)
I installed the rom(Way2) and no crashes anymore without changing the voltages... On stock rom(odin clean installed) I still had random reboots and freezes!:victory:
But when you flash a custom kernel and changes voltages (Way1) also on stock no more random reboots!
So both ways worked try it out!
Click to expand...
Click to collapse
okay man! that was really helpful! ill try it and keep u up to date!
thanks alot bro!

ArkPly said:
I am not pretty sure uf it is a software or a hardware damage! But It can be :
1. After years of using your phone the battery power decreases and the voltage needed for cpus to work is not given anymore..
2. A permission file!
FIX for 1.:
- Install custom kernel(pos45) where you can change voltage
- Install Synapse or MTweaks
- Upvolt all values under 1000mHz to 800mAh in both big and small cores
- And youre done!
FIX for 2.:
- Install rom Ultimate Nougat S8+ Port v3.1
- This rom contains a fix for this issue!(I tested it it works!)
I recommend: Try FIX for 2. FIRST its more secure and dont blame me if you destroy your device!
Click to expand...
Click to collapse
Hello
I dont understand this : Upvolt all values under 1000mHz to 800mAh in both big and small cores
Maybe have you a screenshot ????
thx