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[Q&A] [Kernel] TRIM: Fast and Stable CyanogenMod 11 on the Galaxy S2 AT&T i777

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22nd January 2015, 02:12 PM   |  #1  
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Q&A for [Kernel] TRIM: Fast and Stable CyanogenMod 11 on the Galaxy S2 AT&T i777

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22nd January 2015, 02:12 PM   |  #2  
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Before I get into it I'd like to thank Lanchon, and whomever else, for putting work in and figuring out how to get Galaxy S2 users back up to speed with trim, I installed the latest version of your kernel on my AT&T i777 and it feels like a brand new phone. I didn't do any benchmarks before the trim but it was dog slow to be sure, afterwards my benchmark numbers were in line with the after results in this post: http://forum.xda-developers.com/show...25&postcount=1

There is one problem I was hoping you'd be able to help with. I'm currently using your kernel-Lanchon-TRIM-FPBug-20150113-cm-11-nightly-crossflash-i777 along with the cm-11-20150118-NIGHTLY-i9100 rom (reflashed your kernel after installing the rom) and I'm encountering heavy wakelocks and battery drain while idle from boot_hsic which I've come to understand is some interconnect between the processor and onboard modem and is controlled by the kernel. I've kept the i777 in airplane mode and want to use it as wifi only, I recently upgraded phones so there's no SIM card in it. I've tried disabling the Phone based APKs in the rom but that's of no help.

betterbatterystats lanchon trim fpbug wakelock

There is one method to get rid of the drain which requires shutting down and pulling the battery for a while but the bug seems to come back on reboot.

Any help would be appreciated
22nd January 2015, 06:47 PM   |  #3  
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Quote:
Originally Posted by s2fiend

Before I get into it I'd like to thank Lanchon, and whomever else, for putting work in and figuring out how to get Galaxy S2 users back up to speed with trim, I installed the latest version of your kernel on my AT&T i777 and it feels like a brand new phone. I didn't do any benchmarks before the trim but it was dog slow to be sure, afterwards my benchmark numbers were in line with the after results in this post: http://forum.xda-developers.com/show...25&postcount=1

There is one problem I was hoping you'd be able to help with. I'm currently using your kernel-Lanchon-TRIM-FPBug-20150113-cm-11-nightly-crossflash-i777 along with the cm-11-20150118-NIGHTLY-i9100 rom (reflashed your kernel after installing the rom) and I'm encountering heavy wakelocks and battery drain while idle from boot_hsic which I've come to understand is some interconnect between the processor and onboard modem and is controlled by the kernel. I've kept the i777 in airplane mode and want to use it as wifi only, I recently upgraded phones so there's no SIM card in it. I've tried disabling the Phone based APKs in the rom but that's of no help.

betterbatterystats lanchon trim fpbug wakelock

There is one method to get rid of the drain which requires shutting down and pulling the battery for a while but the bug seems to come back on reboot.

Any help would be appreciated

thanks for writing.

unfortunately i dont own the device. all i can say is:
-try flashing an up to date modem
-try contacting other users of crossflash and see if this is a general problem or a problem of your particular setup.
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23rd January 2015, 06:12 AM   |  #4  
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Quote:
Originally Posted by Lanchon

thanks for writing.

unfortunately i dont own the device. all i can say is:
-try flashing an up to date modem
-try contacting other users of crossflash and see if this is a general problem or a problem of your particular setup.

Flashing the up to date modem was the issue, thanks for the hunch. I guess in all of the formatting/cleaning up I wiped it out somehow. I reinstalled CM11 and your kernel then the I777UCMD8 modem and the wakelocks stopped.

Thanks again!
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