[Q] Why switch kernels? - Droid Incredible Q&A, Help & Troubleshooting

I've looked through previous posts and my question is:
if I'm using the CM7 nightly builds, why would I want to use 2.6.37.6-incredikernel or the latest incredikernel instead of the one that Cyanogenmod sends along with their rom? I've noticed a lot of folks are on nightlies but use different kernels, so I'm confused. Could someone please help me? I've figured out the radios and done tests for my area and selected the radio that gives me the best reception, but I'm unclear on the kernel thing. My Dinc would be greatful.

different kernels have different features of control. biggest difference between them are "governors" which are different types of CPU scaling. custom kernels also sometimes provide methods of undervolting and overvolting to save battery power without creating instability

Related

school me on Kernals

How do you install one, same as any other zip file flash?
What are the different options for an incredible?
I am currently running the a 2.2 leak and will be flashing to the newest leak once the dust settles on all the different version popping up. I do need WiFi tether working too. I don't care about getting some great score on a benchmark app, just want to see what kernals offer to a normal user.
Yep, installed just like any other zip.
We have Hydra Kernels and Kingklick Kernels
Hydra - http://forum.xda-developers.com/showthread.php?t=701282
Kingklick - http://forum.xda-developers.com/showthread.php?t=760050
Both of them support wireless tether, its just a matter of reading up on them and choosing which one you personally prefer. I use the Kingklick BFS #1 Kernel.
Is there any major difference between hydraulic and king?
rmoney said:
Is there any major difference between hydraulic and king?
Click to expand...
Click to collapse
you'd have to read the change logs. They both run various OC and undervoltings to save battery life while maintaining performance.
I've ran hydra .3, .5, kingklick 1,2,3 and so far KK #3 has worked the best....can finally get ~24 hours out of one charge on stock battery.
Best would be to nandroid backup and see which one works for you the best.

[Q] which is better?

Hello,
I have some doubts about the opendesire roms and defrost roms's and the cynogen mod roms. What are your opinion on these Roms? I am currently using defrost 4.7. Also what are the differences between these roms?
Also there is a theme called blufrost and it has also another name call gefrost or something like that. Whenever I try to install it, when I boot up, it goes into a constant boot loop. What am I to do? I really, really, love that theme. I really want to install it. Any opinions?
If there are almost exact themes that work I would not mind them. But hopefully there is a way to allow the original to work.
Thirdly, I want to overclock my desire and the kernal defrost gives is at 1.275 volts. What is the normal voltages the processor recieves? What is the maximum it can take? What is the minimum too?
Thank you all in advance!
Cyanogenmod is the base. There all the bugs get solved, features integrated.
To run Cyanogenmod on the Desire a specific Kernel is required which gets constanly updated, too.
The source code of both Cyanogenmod and the kernel are public available.
CyanogenMod releases a Desire ROM every now and then, with a lot of additional apps and tools integrated.
Both OpenDesire and DeFrost use the CyanogenMod source and mod it a bit, compile it and release it. Either modifiying the kernel, adding HAVS (DeFrost), or just removing not needed apps, adding other apps, adding custom settings, etc.
So all three are very similar and most often suffer from the same issues, because all of them use the same kernel, so all of them had the Optical Joystick wake issue, had a general sleep issue, etc. which should be solved now, however.
I don't recommend using the real CyanogenMod ROM. Simply because not so many Desire users use it, so don't expect too much help, themes, mods, etc. It's also bloated in my opinion with a lot of already installed apps.
OpenDesire makes it smaller, remove unwanted apps. It also offers an over the air (OTA) update app so it makes it easier to update the roms. It allows overclocking and undervolting. Has a lot of themes and users.
DeFroST is similar. Don't know if it's still true, but DeFrost seems to be slimmer, even more not needed apps removed. Also has an OTA app and allows you to change the Kernel without troubles. I used OpenDesire a few months ago, so I don't know if it got an improved OTA now, however, DeFrost had the much better and more flexible one. DeFrost also offers a HAVS kernel, which gives more battery life, however, it also isn't stable on some phones.
So in the end it's a personal decision. I also switched to DeFrost because the OpenDesire community got flooded with noobs after the Playstation mod got released for OpenDesire, noobs, who have no idea how to count till 10. The thread became flooded and useless. I also prefer the way Richard (DeFrost) does his work.
1.3V is the default max. voltage. You shouldn't go higher, because you can't improve the cooling nor anything else hardware related.

Kernels

I know this may sound crazy, but I can not seem to find any of the files needed to install kernels (hydra or kings). I have found numerous threads about kernels but i have not found any website offering links to the files needed to install the kernels
Anyone have this problem?
socratus said:
I know this may sound crazy, but I can not seem to find any of the files needed to install kernels (hydra or kings). I have found numerous threads about kernels but i have not found any website offering links to the files needed to install the kernels
Anyone have this problem?
Click to expand...
Click to collapse
Hydra kernels disappeared around a year ago. I still have them somewhere if you really want to try them, but they are HUGE kernels and I believe there are better alternatives today. KingxKlick kernels... well.... I don't know the full story behind that, but you won't be finding his either, unless I or someone else feels like posting them somewhere. Again, I believe there are better alternatives. Among Sense kernels, Lou's, Chad's, and Ziggy's are the best in my opinion, with Ziggy's being the fastest, most tweaked out of them all.
Oh, ****, well thanks Loonatik. I was wondering why I couldn't find any of them. I have a rooted phone and the regular stock kernel; I wish to overclock but aren't sure of which kernel to download. Any suggestions?
Using an Android Incredible as well..
+1 for Chads... I've used it for a long time now on various ROMS, and always get great battery life out of it!
For overclocking, the only 2 kernels I'd even consider are Chad's and Ziggy's. I give Ziggy's a slight advantage because his allows scripting to alter voltages and clock speeds without the overhead of having to use an app. For Chad's, the newest he's got for Sense is the 12/23/10 kernel. Ziggy's is the 4/10/11 kernel. Both are very respectable and perform so well discerning the difference is almost impossible.
Here's my complete list of kernels for the HTC Droid Incredible: http://forum.xda-developers.com/showthread.php?t=1169150. You can also get to it by clicking on ROM list in development, he links to it at the bottom. I really need to message a mod to get this as a sticky.
ithrewitontheground said:
Here's my complete list of kernels for the HTC Droid Incredible: http://forum.xda-developers.com/showthread.php?t=1169150. You can also get to it by clicking on ROM list in development, he links to it at the bottom. I really need to message a mod to get this as a sticky.
Click to expand...
Click to collapse
Indeed. It's certainly worthy of it.
I believe you can use scripts with Chad's kernels as well, most people just seem to prefer the convenience of an app. He had voltage scripts you can use with incredikernel long before his incredicontrol app.
ithrewitontheground said:
Here's my complete list of kernels for the HTC Droid Incredible: http://forum.xda-developers.com/showthread.php?t=1169150. You can also get to it by clicking on ROM list in development, he links to it at the bottom. I really need to message a mod to get this as a sticky.
Click to expand...
Click to collapse
mods are very scarce on this forum
k_nivesout said:
I believe you can use scripts with Chad's kernels as well, most people just seem to prefer the convenience of an app. He had voltage scripts you can use with incredikernel long before his incredicontrol app.
Click to expand...
Click to collapse
and yea you can flash the scripts on chad's like you can with ziggy's or any other kernel with HAV's and sysinf or something like that, some type of kernel interface.
POQbum said:
mods are very scarce on this forum
and yea you can flash the scripts on chad's like you can with ziggy's or any other kernel with HAV's and sysinf or something like that, some type of kernel interface.
Click to expand...
Click to collapse
I've never flashed a script to a kernel dInc kernel. I just write them or tweak them and push them. Whether a kernel has hybrid adaptive voltage scaling HAVS makes no difference regarding scripts. You probably want to play with a kernel with static voltage scaling (SVS) when you're first OC'ing to figure out where it's stable and not. What it does need is some kind of sysfs interface, which Chad's and Ziggy's both do. I think Ziggy's is better because it permits more parameters than voltage and clock to be adjusted. You can customize governors, wake-up, and sleep behavior too, as well as set governors for different conditions. If you're going to experiment with scripting the kernel, you'll want to try out your script via terminal emulator so that if you're parameters don't work, the phone just reboots back to stock settings. If you use a flashed script, you're stuck with it unless a removal .zip is provided or you wipe and restore from a backup.

[q] best rom kernel combo?

Hi i have a nexus lte version, and i just began flashing roms and kernels. I am currently on gummynex 0.4.7 with franco kernel #11 --I love customization but i think i prefer the best battery life possible. If this kind of thread has been created i apologize if i did not search enough. If you can re-direct me to the thread i'd appreciate it, if not what are your guys thoughts...because i find myself flashing everything.....
there are like 5 other threads asking this same question. read the other forums for more feedback because they have been populated with 2+ pages with suggestions.
my personal suggestion is AOKP build 15 + latest franco kernel
AOKP offers a "power saver" mode... the best battery tip i can tell you is to disable 4G LTE.. enable it when you really need the speed. LTE is a huge drain

[Q] Current ROM with OC compatibility

Hi all,
I've scoured the forum for quite some time now and have tried a number of newish ROMs (those posted in May) but have not found any that are compatible with Ktoonsez's latest kernel. A lot of people have advised against overclocking but my GS3 certainly performs better with OC enabled. I flashed one of Jamison's nightlies months ago and it has been the most stable/reliable out of any ROM I've tested since. I either got lucky and found the perfect ROM for my phone or I just haven't found a solid new ROM that supports OC'ing. I've had random reboots, force closes, etc. with all the new ROMs I've tried so I was hoping someone could give me some ideas on a ROM/kernel combination that might work for me. The only reason I even want to change my current ROM is because many of my Google apps report that an update is available, but when I go to update, my "device doesn't support this version." It's quite frustrating and a pretty sad reason to switch ROMs when literally EVERYTHING else works flawlessly, but it is a problem for me and I'd like to be able to stay up to date. Sorry for the long post, but anyone with advice would be wonderful. Thanks!
You need a kernel that support OC, its not ROM specific.. You do however, need to check kernel's description to which base it works with.. Sometimes they will have one for just touchwiz or touchwiz and aosp, thats pretty much the main thing to look for and just try different ones.. It should also say if its OC able or not
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