Nexus 7 fails to turn off or reboot. (FIXED) - Nexus 7 Q&A, Help & Troubleshooting

Hi,
I just got my nexus 7 3 days ago.
I flashed TWRP and CM10.1.2, then the franco.kernel
Everything was going fine, until today it started to freeze when I select power off/reboot, while yesterday, everything was fine.
Any help?? (I can go into bootloader/recovery, by doing the combination)
I've tried re-flashing the franco kernel, and CM10.1.2.
Edit: I Fixed by under-clocking my GPU to stock settings (416 MHz), Before I Over-clocked it to 750 MHz
You can leave now

drew1ind said:
Hi,
I just got my nexus 7 3 days ago.
I flashed TWRP and CM10.1.2, then the franco.kernel
Everything was going fine, until today it started to freeze when I select power off/reboot, while yesterday, everything was fine.
Any help?? (I can go into bootloader/recovery, by doing the combination)
I've tried re-flashing the franco kernel, and CM10.1.2.
Click to expand...
Click to collapse
What exactly do you want help with? You can still transfer files onto your device and boot into recovery. Try a different ROM and/or kernel.

Username invalid said:
What exactly do you want help with? You can still transfer files onto your device and boot into recovery. Try a different ROM and/or kernel.
Click to expand...
Click to collapse
No thanks.
It turns out, it's because I've overclocked my GPU from 416 MHz to 750 MHz. It's fine now

Related

[Q] Overclocking Issue :( any ideas?

so im fairly new to android (converting from iphone) and bought myself a wildfire to check it out. So far ive used unrevoked to root and flashed the wildpuzzle ROM, now im attempting to overclock the processor. ive saved the 0163_768mhz_cpu_speed_v1.zip to my PC, copy to SD, installed from reboot menu and downloaded setCPU. But the max is still 528 mhz on setCPU :/ any ideas on where im going wrong?
If that is not working, first, flash the 0130 file (kernel), then try 0163. Also, if you flash 0130, you dont need 0163, and, can set the speed as you wish from within SetCPU.
Try it out.
BTW, I hope by "Installed from Reboot Menu" you mean entering into Recovery Mode, Selecting Install Zip from SDC, and selecting the particular Zip file.
One last thing, remember to take a Nandroid backup before flashing any overclockable kernels.
yes thats what i meant
I tried the 0130 file, had to unistall and re-install setCPU but is now running at 768mhz! thanks for the help 3xeno
That's great, but, just as an info, I would not recommend keeping it at 768. Most phones are unstable at that, and, performance actually drops. Try 710 or 729.
With the overclocking done, PSX4droid works well?

Overclock settings lost, some help please.

So, I'm having this issue with my nexus 7, can't seem to find a post about this problem anywhere on the internet, much less XDA forums. Using SetCPU (Or Rom Toolbox Pro, or both at once with the same settings) I can't get overclocking or underclocking to work for long. The settings keep resetting themselves every time I turn the screen on and off, and every time I reboot the device. Yes, I always set the values on boot, and when powering back on I wait for the SU notification, but even both apps show the settings changed back to stock 1.3ghz.
I have tried doing this with stock 4.1.1, Glazed Jellybean 1.2; resetting the bootloader, recovery, and os back to stock and wiping out the sdcard; I have tried the stock kernel for underclocking; trinity kernel Clemsyn's elite kernel both the 1.8ghz and 1.5ghz for overclocking; and yet I keep on running into this problem.
If I keep the screen on the overclock settings stay, however if I underclock to 1.0ghz the cpu speed keeps jumping to 1.2ghz anyway.
So, anyone with any idea of what to do, or any overclocking experience, help would be appreciated.
Device: Nexus 7
Android versions tested: Stock Android 4.1.1 & Glazed Jellybean 1.2
Kernels tested: Stock, Trinity Kernel, Clemsyn's Elite Kernel 1.8ghz overclock & Clemsyn's Elite Kernel 1.5ghz overclock
Edit: Both supersu and superuser with updated binaries result in no change; updating busybox didn't help either.
SithDagger said:
So, I'm having this issue with my nexus 7, can't seem to find a post about this problem anywhere on the internet, much less XDA forums. Using SetCPU (Or Rom Toolbox Pro, or both at once with the same settings) I can't get overclocking or underclocking to work for long. The settings keep resetting themselves every time I turn the screen on and off, and every time I reboot the device. Yes, I always set the values on boot, and when powering back on I wait for the SU notification, but even both apps show the settings changed back to stock 1.3ghz.
I have tried doing this with stock 4.1.1, Glazed Jellybean 1.2; resetting the bootloader, recovery, and os back to stock and wiping out the sdcard; I have tried the stock kernel for underclocking; trinity kernel Clemsyn's elite kernel both the 1.8ghz and 1.5ghz for overclocking; and yet I keep on running into this problem.
So, anyone with any idea of what to do, or any overclocking experience, help would be appreciated.
Device: Nexus 7
Android versions tested: Stock Android 4.1.1 & Glazed Jellybean 1.2
Kernels tested: Stock, Trinity Kernel, Clemsyn's Elite Kernel 1.8ghz overclock & Clemsyn's Elite Kernel 1.5ghz overclock
Click to expand...
Click to collapse
are you using superuser or supersu? and is your busybox updated? heres a flashable supersu, flash it, boot, open the supersu app, update your su binaries if it asks. then get stericsons busybox updater free from the play store, open it, then update your busybox. reboot, then try ti set your cou speed.
simms22 said:
are you using superuser or supersu? and is your busybox updated? heres a flashable supersu, flash it, boot, open the supersu app, update your su binaries if it asks. then get stericsons busybox updater free from the play store, open it, then update your busybox. reboot, then try ti set your cou speed.
Click to expand...
Click to collapse
Using superuser, binary was updated earlier today, as was busybox, no changes after installing either of them.
SithDagger said:
Using superuser, binary was updated earlier today, as was busybox, no changes after installing either of them.
Click to expand...
Click to collapse
try supersu, superuser has had many issues with jelly bean.
simms22 said:
try supersu, superuser has had many issues with jelly bean.
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Click to collapse
Same results with supersu, weird stuff.
At least you got me to try supersu, looks much nicer than superuser does.
SithDagger said:
Same results with supersu, weird stuff.
At least you got me to try supersu, looks much nicer than superuser does.
Click to expand...
Click to collapse
you don't happen to have the trinity kernel toolbox?
simms22 said:
you don't happen to have the trinity kernel toolbox?
Click to expand...
Click to collapse
No, but I can go grab it with my play store credit if you think it will really help, I figured that most cpu controllers use the same system of controllers and such for setting cpu speed.
SithDagger said:
No, but I can go grab it with my play store credit if you think it will really help, I figured that most cpu controllers use the same system of controllers and such for setting cpu speed.
Click to expand...
Click to collapse
I'd hate to make you buy something, but if you do try it you'd have to uninstall setcpu. you can at least try it and return it if it doesn't work. you've got 15 minutes.
simms22 said:
I'd hate to make you buy something, but if you do try it you'd have to uninstall setcpu. you can at least try it and return it if it doesn't work. you've got 15 minutes.
Click to expand...
Click to collapse
Funny, I have been debating on buying trinity kernel toolbox for a few weeks not.
Well, I tried it out; rebooted thrice, left the screen of for over 3 minutes, the settings stick, my nexus7 is happily underclocked to 1.0ghz right now.
Now to restore my backup, and get a nice overclocking kernel going.
Thanks Simms!
SithDagger said:
Funny, I have been debating on buying trinity kernel toolbox for a few weeks not.
Well, I tried it out; rebooted thrice, left the screen of for over 3 minutes, the settings stick, my nexus7 is happily underclocked to 1.0ghz right now.
Now to restore my backup, and get a nice overclocking kernel going.
Thanks Simms!
Click to expand...
Click to collapse
sweeet
Im having the same issue
simms22 said:
sweeet
Click to expand...
Click to collapse
Afternoon All,
I'm looking for a little bit of guidance pls.
I've overclocked both my GS3 and my Nexus 7, but of reboot i loose my overclock as it sets back on default.
I've tried various apps to try and manage, incl STweaks and trinity, to no avail.
I have read its something to do with the Power HL (correct me if I'm wrong) but i can no longer find that post.
its doing my head in.
Any on got ant ideas pls?
thanks.

[Q] MT Kernel installation

Guys, what are the step by step instructions for installing MT Kernel 2.5?
I really cannot install it, I already tried flashing it via odin but my phone just crashes. Please help me guys.
Thank you in Advance guys!
Try mai77's method (flashing via CWM). It's in the second post of the kernel's thread (by ronnieryan). Make sure you've flashed to stock firmware first.
Sent from my GT-I9100 using xda app-developers app
I already did that. My phone just freezes in Samsung Galaxy Young Logo and after that, I cannot open the recovery mode.
Uhm, Is it recommended that I also include PIT and Bootloader in odin while flashing?
franzjonard said:
I already did that. My phone just freezes in Samsung Galaxy Young Logo and after that, I cannot open the recovery mode.
Uhm, Is it recommended that I also include PIT and Bootloader in odin while flashing?
Click to expand...
Click to collapse
Nope. NOT Recommended to use PIT/Bootloader/re-partition in odin.
Installing with ext4 system and cache could be tricky, Id recommend to flash to stock ROM before flashing the kernel.
1) Flash back to stock ROM
2) Go to recovery, flash CWM to get CWM recovery
3) Backup using backup and restore
4) Flash ext4converter.zip and reboot
5) Go to download mode
6) Flash the latest merruk kernel using odin
7) Now go to CWM, backup and restore -> Advanced restore -> Restore System
8) Wait till it completes
9) Reboot and your stock ROM will now boot
10) You can flash ANY custom ROM you wish and do any modifications.
Thats it, this worked for me
Oh thanks for the response. I already installed the kernel but I have a question. My galaxy y is having a random shutdown, do you know the reason why? And another question, what applications are you using to undervolt and to manage the cpu of your galaxy y?
franzjonard said:
Oh thanks for the response. I already installed the kernel but I have a question. My galaxy y is having a random shutdown, do you know the reason why? And another question, what applications are you using to undervolt and to manage the cpu of your galaxy y?
Click to expand...
Click to collapse
Same here, my phone does random reboot, too. I'm still in patience because the kernel hasn't been finished yet.
I'm using No-frills CPU Control to manage CPU and CPU spy to monitor it.
LilSasa said:
Same here, my phone does random reboot, too. I'm still in patience because the kernel hasn't been finished yet.
I'm using No-frills CPU Control to manage CPU and CPU spy to monitor it.
Click to expand...
Click to collapse
Oh, I thought it was just me that experiencing that problem. Anyway, thanks for the response.
franzjonard said:
Oh, I thought it was just me that experiencing that problem. Anyway, thanks for the response.
Click to expand...
Click to collapse
Hey, try setting your governor to ondemand (I was using ondemandx previously) and min. frequency to 312 MHz. My phone has lasted for nearly a day without rebooting, I just did it manually to update the kernel to developer edition version 8.
Guys just tick the option prevent other apps from changing the frequency in settings in No Frills CPU....
Because smtimes after deepsleep the phn frequency automaticalky changes to 156 mhz....
So it will not reboot automatically..
And keep its frequency greater than 312 to avoid frequent rebooting because armv6 processor supports frq greater than 300mhz....
Sent from my GT-S5360 using xda app-developers app
Guys, I already solved the auto shutdown problem. I reflashed the kernel because the first time I flashed it, I am on Merruk Kernel 2.0 Pre-final. Now I flashed it on stock. I got it solved and I set 312 Mhz minimum on no frills using smartassv2 and vr.
By the way, I will flash the version 8 now.

[Q] after installing new kernel, cannot get into recovery, multiple crashes, hangs

i just installed this kernel
http://forum.xda-developers.com/showthread.php?t=1804374
and since then, i have had multiple problems. multiple things force close, programs dont load, everything hands (like when i hit power off, it just hangs with the circle then everything freezes up and i have to hold power button for 15 - 20 secs to turn off device).
cannot get into recovery - everytime i try to from bootloader it hangs at the google page and if i try to get into from rom manager, rom manager doesnt even load
does anyone have any suggestions?
thanks in advance!
bump.. since i changed the post.
joshtb86 said:
i just installed this kernel
http://forum.xda-developers.com/showthread.php?t=1804374
and since then, i have had multiple problems. multiple things force close, programs dont load, everything hands (like when i hit power off, it just hangs with the circle then everything freezes up and i have to hold power button for 15 - 20 secs to turn off device).
cannot get into recovery - everytime i try to from bootloader it hangs at the google page and if i try to get into from rom manager, rom manager doesnt even load
does anyone have any suggestions?
thanks in advance!
Click to expand...
Click to collapse
Have you tried flashing the stock kernel via fastboot?
comminus said:
Have you tried flashing the stock kernel via fastboot?
Click to expand...
Click to collapse
can you link me to it? the only one I can find is from another post and it includes init.d support.
thanks!
fck.. this is not good. I tried using wugs toolkit and flashed the stock kernel with init.d support but it got messed up somewhere after it installed a temporary recovery and now it boots straight into recovery and I cannot boot into the actual tablet. I just flashed the stock 4.1.2 rom here
http://forum.xda-developers.com/showthread.php?t=1929270
and still cannot boot into the tablet its booting straight to recovery
can anyone help?
joshtb86 said:
fck.. this is not good. I tried using wugs toolkit and flashed the stock kernel with init.d support but it got messed up somewhere after it installed a temporary recovery and now it boots straight into recovery and I cannot boot into the actual tablet. I just flashed the stock 4.1.2 rom here
http://forum.xda-developers.com/showthread.php?t=1929270
and still cannot boot into the tablet its booting straight to recovery
can anyone help?
Click to expand...
Click to collapse
Flash back to stock http://forum.xda-developers.com/showthread.php?t=1907796
comminus said:
Flash back to stock http://forum.xda-developers.com/showthread.php?t=1907796
Click to expand...
Click to collapse
I think I was able to flash the factory stock image because I finally got it to boot, but its in the "android is upgrading" phase, so I will post after if this worked or if I tried the above.
thanks!
now it is intermittently booting up and intermittently booting straight into recovery.
I believe ive fixed it. I booted back into the OS 3 times and no booting into recovery. thanks!
joshtb86 said:
I believe ive fixed it. I booted back into the OS 3 times and no booting into recovery. thanks!
Click to expand...
Click to collapse
I'm having the same issue now after flashing faux's kernel. You had to reflash a stock image from the toolkit to fix it?
VanillaG0rilla said:
I'm having the same issue now after flashing faux's kernel. You had to reflash a stock image from the toolkit to fix it?
Click to expand...
Click to collapse
yes except it took multiple multiple times to work and actually stick. i thought i had it and it was booting fine and it is booting fine now, but my performance is abysmal. its like 25% of what it was.
i have no poewr because of hurricane sandy (on coimputer at work) so i cant even use it or update it. i am strongly considering OEM relocking the tablet and starting over from scratch. performance is almost back to the lag we had before 4.1.2 was released.

[Q] CPU speed issue (?)

Ive recently flashed the latest 4.3 ROM from Quarx. (previously I was using an old version of the 4.1 ROM from Quarx too).
First it was _really_ slow, after a while I figured out, that the CPU was reporting 0MHz maximum and 300 MHz minimum. The problem was, that the CPU speeds were in the bootmenu 300,600,1000,1000. To fix it, ive changed it to 300, 600, 800, 1000.
Now the phone is super fast, but I think there is some problem with the CPU speeds. If the screen is off, it runs at 300, but if I turn the screen on it will always run at 1000 - even if the CPU load is like 10%. Ive tried boosted and smartass governors, stock and lower Vsel values, no help.
Is this normal? If not how can I fix it?
thanks
Strange. It shouldn't be stuck to 1000 when screen is on, in fact it should increase to 1000 when there is some interaction. Try starting fresh.
Sent from my MB526 using xda app-developers app
syddd said:
Ive recently flashed the latest 4.3 ROM from Quarx. (previously I was using an old version of the 4.1 ROM from Quarx too).
First it was _really_ slow, after a while I figured out, that the CPU was reporting 0MHz maximum and 300 MHz minimum. The problem was, that the CPU speeds were in the bootmenu 300,600,1000,1000. To fix it, ive changed it to 300, 600, 800, 1000.
Now the phone is super fast, but I think there is some problem with the CPU speeds. If the screen is off, it runs at 300, but if I turn the screen on it will always run at 1000 - even if the CPU load is like 10%. Ive tried boosted and smartass governors, stock and lower Vsel values, no help.
Is this normal? If not how can I fix it?
thanks
Click to expand...
Click to collapse
Did you flash with 08.01 or with 09.17 rom?
I tried both and only 08.01 is working fine for me, I had problems with the 09.17 ( My hardware buttons didn't work right....)
andy-q said:
Did you flash with 08.01 or with 09.17 rom?
I tried both and only 08.01 is working fine for me, I had problems with the 09.17 ( My hardware buttons didn't work right....)
Click to expand...
Click to collapse
If hardware buttons didn't work, it is usually indicative of a full system partition/wrong gapps/too big zip.
hotdog125 said:
Strange. It shouldn't be stuck to 1000 when screen is on, in fact it should increase to 1000 when there is some interaction. Try starting fresh.
Click to expand...
Click to collapse
Will these steps result in a complete reinstallation? Ive backed up all data from the phone, so I can wipe everything.
Copy the zip file to your SD card.
Reboot and enter recovery.
Wipe cache + wipe data + wipe dalvik cache.
Install the zip file from the SD card.
Wipe cache + dalvik cache again
Or do I need to do something else for Quarx's latest ROM? like install a different SBF or kernel? Ive rooted (and flashed an .sbf) this phone like 2 years ago.. Before 4.3 I was using a 4.1 build for a long time.
You need to flash a new 4.1 build which has TWRP and then flash 4.3, because the old CWM binary does not support 4.3. I suggest you do a full wipe with defy full wiper or AROMA wiper.
Sent from my MB526 using xda app-developers app

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