[ROM] AOSP/CM Jelly Bean 4.2.2 for a2109

Discussion in 'Lenovo IdeaTab A2109 Development' started by PJBrs, Dec 29, 2014.

  1. tasinofan

    tasinofan Senior Member

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    I am sad to say: I gave my A2110 away (put stock rooted bloatware removed on it). I got a present myself: a Sony Xperia Z2 Tablet (SGP512). I run 5.1 AOSP on it (soon one self-built, I hope).
    I will miss this thread... and the device, and the people who own(ed) and love(d) it ... or its A2109 cousin...
     
    Last edited: May 9, 2015
  2. DBlake

    DBlake Senior Member

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    I really regret not buying the Nexus 7 2012 (it was 2012 when I got this). Identical hardware but Lenovo sucks balls for anything after you buy it (support, updates, hell even had to fight to get the damned kernel source).
     
  3. adcjen

    adcjen Junior Member

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    First thing , thanks for taking on this project I was going to buy a new tablet until I cam across this a few weeks ago.
    I would be happy if we even got to 4.3 or 4.4 my self.

    When trying to flash CM-10.1 in clockwork MOD I get the below error ,I am running of a build that's week or two old. version JB-MR1_milestone-1

    asset failed getprop ("ro.prodcut.device") == "kai" || getprop ("ro.build.product") == "kai"
    (Status 7)
     
  4. DBlake

    DBlake Senior Member

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    You have to be running the newest CWM (the one in this thread, 6.0.3.7 I think).

    The one compiled by MCL calls this device A2109A in the code, the new one calls it Kai.
     
    Last edited: May 10, 2015
  5. poncespr

    poncespr Senior Member

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    This great. I had my Lenovo collecting dust because of the bad lags on stock and available roms.
    But this one works amazingly well.
    I thank you for taking time and breathing new life into this tablet.
     
  6. PJBrs

    PJBrs Senior Member Developer

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    Hmmm... i'm hesitant about overclocking. That said, perhaps you can point me to vampirefo's sources and kernel config?

    Regarding 4.3 vs. 4.4, I might skip 4.3 for cm. AOSP is probably too big a leap, because it takes a lot of time to identify all those compatibility patches in cm.

    Thanks for all the testing you've done, and congrats with the new tablet. Do send your cousin over to this thread so he can take your role :)
     
  7. fusm

    fusm Senior Member

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    Waiting for 4.4.4 rom.
    Your cm 4.2.2 rom is very stable, the only issue I've found is weichat app cannot be open.
     
  8. DBlake

    DBlake Senior Member

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    It's only a 200mhz over clock. It's fairly safe from what I've experienced; it does make a slight difference though. Here's the URL: http://www.androidtablets.net/index.php?threads/55577/ He uses the stock kernel sources with his own custom build script.
     
  9. PJBrs

    PJBrs Senior Member Developer

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    Hmmm... As far as I can tell, that script is just a bunch of commands to compile the kernel and to repack the bootimage. I don't think all of those governors are in the stock kernel source, and I'm quite sure that overclocking would require a kernel patch anyway. I really need sources to get to work with this.
     
  10. PJBrs

    PJBrs Senior Member Developer

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    Thanks! What is weichat? Do you mean wechat? If possible, grab logcat output (e.g., via adb), perhaps something stands out.
     
  11. DBlake

    DBlake Senior Member

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    I don't know, that's all he provided. You'd have to contact him for that.
     
  12. fusm

    fusm Senior Member

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    Yes. It should be wechat.
    I'll try to do it at my leisure.
    Thanks!
     
  13. PJBrs

    PJBrs Senior Member Developer

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    I'm afraid vampirefo himself appears to have lost his sources for this kernel on an older laptop. It might still be possible to use his kernel in our rom, but I can't vouch for bluesleep (which needed a separate patch) or selinux (which needed to be activated and will be part of 4.3 and up). Also, without sources I cannot legally distribute vampirefo's kernel in our rom (GPL). We'll just have to continue with what we have right now.
     
  14. DBlake

    DBlake Senior Member

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    Alright.
     
  15. profeet

    profeet Senior Member

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    @PJBrs very nice ROM. I flash it again. Thanks for new life of our tablet!
    But I have "old" bug with wi-fi, when wi-fi is off, battery fast drain (like on stock 4.1.2).
    How to fix this issue?
     

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