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I have a Huawei u8160 running Cyanogenmod 7.2 that always restarts automatically.

My phone is clocked to 122-600 while my phone's CPU's Max frequency 558.

I'm using the SMARTASSV2 governor and it mostly restarts when it is sleeping.

So I want to know what restarts my phone automatically?

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Why would it meltdown ? Maybe because the excessive frequency ? –  Mohamed Essam Jul 23 '12 at 1:46
    
most probably it crashed and the watchdog circuit triggered a restart. Aka: yor Mod is still unstable. –  ce4 Jul 23 '12 at 8:40
    
@ce4 what crashed? and what is the watchdog circuit? –  Mohamed Essam Jul 23 '12 at 10:59
    
I've heard that the smartassv2 governor caps the frequency to the lowest while sleeping,maybe my lower frequency is not right? –  Mohamed Essam Jul 23 '12 at 11:03
1  
@Mohamed: Here's a wikpedia article about watchdogs in computing –  ce4 Jul 24 '12 at 8:28
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1 Answer

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Summarized Answer:

The main issue your facing is that you're using SmartassV2/ondemandX that was developed for stock kernels. But you're using it with a non stock kernel, the CyanogenMod 7.2. See bellow a summary for each of them.

Useful reading: A Beginner’s Guide to Android Kernels


SmartassV2/ondemandX governors

Stock kernel is the factory firmware. If you're using SmartassV2/ondemandX governors, they are modules for phones with stock kernels because they don't have 'smartass' or ondemandX' governors:

This modules are for people with stock kernels because they don't have 'smartass' or ondemandX' governors.

Differences between this modules and build in stock kernels:

  • allows to set max CPU freq when screen is off (to save battery),
  • allows to set starting CPU freq when phone awakes (to speed up awake process),
  • allows set/change almost all aspects of governor (to suite needs),
  • should be a bit more responsive when parameters are well chosen for smartassv2 governor.

CyanogenMod 7.2.0-RC1

The current CyanogenMod 7.2.0-RC1 U8160 Port status is stable, but there are some known issues reported.

Already fixed reboot related issues:

  1. v0.9 (20120203):

    • Hotfix 4test5 [21 Feb]: Revert longterm patches due to random reboot issue.
  2. v0.7 - 22 January 2012:

    • Kernel stability fix (disabled SCHED_HRTICK due to instability/random reboot issue).

Note: Check your version. The latest is v1.3 released at 2012-06-25.


Use the link bellow to get detailed information about the development and what users are reporting. If you've got a version above v0.9, consider reporting your issue, thus allowing the developer to deal with it. If your version isn't the latest, consider changing to it.

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the last version is 2/7/2012 not 25/6/2012 and i have installed it already and then it started random rebooting –  Mohamed Essam Jul 23 '12 at 12:18
    
@MohamedEssam Can you provide a link for the version released on 02-07-2012? Didn't saw any mention to it... –  Zuul Jul 23 '12 at 12:32
    
i downloaded it from goomanager. –  Mohamed Essam Jul 23 '12 at 14:55
    
@MohamedEssam The release from 02-07-2012 isn't an official one yet. There's still some bugs being fixed. That's the reason as to why she doesn't appear on the changelog. –  Zuul Jul 23 '12 at 21:22
    
but the 25/6/2012 one has too many bugs the most obvious one is that all the sensors aren't working well.that what made me install that one. –  Mohamed Essam Jul 23 '12 at 21:50
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