Develop Bugs

Kernel suggestions?

Here is the situation, I appreciate any feedback. I'm running Remptive Revolution with the Distinction 1.49 theme on it, I flashed over to one of ziggy's kernels not too long ago and it seems like it rips my battery up. I usually have it around 1.15 on demand in SetCPU with profiles set to 384max when screen off, and 768 max when below 50% and 691 below 30%. It seems like the original ROM kernel was wicked fast but I didn't get a good chance to test out the battery life. I've tried a few different kernels and I'm considering going back to one of the Hydra kernels, I feel like they haven't done me wrong. I'm just looking for a good solid kernel that will give me solid battery and good performance, I know I won't get the best of both worlds, but I'd prefer good battery life. Also, pro/cons/purpose of wiping battery stats? I can't seem to find any info about it.

I really like chads kernels. His newest one an oc to 1.113 and is faster then any other kernel ive ever used with really good battery life. (ive only tested the battery life at stock speeds.) And the purpose of wiping battery stats is to let your phone recalibrate the battery so basically you can get the best battery life. ( i believe at least)

Gahh Its Lee said:
I really like chads kernels. His newest one an oc to 1.113 and is faster then any other kernel ive ever used with really good battery life. (ive only tested the battery life at stock speeds.) And the purpose of wiping battery stats is to let your phone recalibrate the battery so basically you can get the best battery life. ( i believe at least)
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I well 2nd this, chads kernel is the shiz. best graphics, great battery life...wicked fast like a new phone I've said before, hands down best kernel for redemptive
Sent from my ADR6300 using XDA App

Installing now. Thanks for the suggestion, I'll have an update later on and we'll see where we stand.
The reason I'm hesitant to use KingKlicks is because of a constant bootloop I ran into. And Ziggy was just cool, got some really good quadrant scores on it, but it just ran through battery like nothing. Anyway, thanks again! I'm excited!

I've been using Heyitslou new kernel and battery life is the best since I've owned this phone. I'm also using his Redemptive Revolution ROM.
Sent from my ADR6300 using Tapatalk

If you use aosp roms then I would go with invisiblek #17. It's the best that I've found thus far.
Sent from my ADR6300 using XDA App

Treken said:
If you use aosp roms then I would go with invisiblek #17. It's the best that I've found thus far.
Sent from my ADR6300 using XDA App
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+1
Best kernel i have used by far for cm6

I wiped battery stats a few days ago in recovery, and literally every app on my phone started force closing. I had to restore from a backup, and when I did, every app acted like it was the first time I ever loaded it. Had to set up EVERYTHING again. Do as you will, but the ONLY thing I did to cause that garbage was wipe my battery stats. I'd love better battery life too, but I think the software should be capable of relearning your power cycle of a battery if you replace the battery. Can't stay one way forever.. or at least it shouldn't.

does anyone know where I can download KXK #3 or one of his other kernels? I have tried to find them on this site and the ROM manager. Even google's top results are just sending me to theads about the kernels but none have links to the kernel itself. I am going to try using it to get my battery life extended since I really don't mess with my DINC much besides angry birds (addict for life).
Thanks,
JrdnThms

There is a kernel thread floating around here somewhere it has them. I'm on my phone so I can't link but its called the official kernel thread I believe
Sent from my Incredible using XDA App

[Q] Best Kernel for stock Sense rooted.

I have rooted my INC, removed all the Bloatware etc, all I would like to do now is change kernel for a little better battery life. Would like a Kernel to either set profiles (setCPU) or one that is set up for better battery with no adjustments.
Running stock sense, rooted.
Thanks

There aren't many Sense kernel's that are still updated much, AFAIK, but when I ran a sense rom I stuck with "HeyItsLou Custom Sense Kernel"
http://forum.xda-developers.com/showthread.php?t=859337
But once again, its all your preference, how YOU feel that the phone runs with whatever kernel you choose. Try that, look for others try them, and then you can see which one runs best. Everyone on here has their own choice for "best" kernel, now its time to make your decision too

IME Lou's #8 seems to do the best when phone is idle a lot, but under heavy use battery was no better or maybe worse than stock for me.
incredikernel by chad was best for me all around, even overclocked a little. Trying ziggys right now, Hella fast and stable so far, battery seems mediocre...nandroid and try them all! I never had issues with hydra either but they seemed to have fallen out of favor.
sent from a phone

I've read that people are getting better battery results by getting the SetCPU app and loading in a custom profile. The thread on what I'm talking about is around here somewhere, fairly recent topic. Kernels, from what I read, differ more by people's own experiance than real noticable differences. Perhaps just get some better battery management like with SetCPU, run a dimmer screen, turn off 3g when you're not using it...ya know, the same scenario that windows mobile guys go through. Also go out and buy a car charger, get a cheap wall charger for at work, etc. Its practically a portable laptop. ...sorry I'm getting a bit off topic....I hear incredikernel is a good one.

I thought setcpu does not work on stock kerenl? Is this incorrect thought you need perflock access? I have extended battery and have set my phone for battery saving, just thought be nice to set a few profiles in setcpu.
Sent from my ADR6300 using XDA App

[Q] Rom and Battery life

Hi. I'm thinking about flashing my first ROM on the Droid Incredible for my wife. She is having terrible battery life with her phone, and I'd like to try and help her out. I really am not looking for much though. My order of prefs are:
Stability > Battery Life > Performance
Mods and tweaks and things of that nature are not really a huge concern for me. I just want everything to work well, and have great battery life. I'd love to hear some suggestions.
Sent from my DROIDX using XDA App

I'm running OVORene Community ROM and my battery last all day with GPS on internet on and 5 apps syncing all day everything on. Super stable I have no problems so far no force closes. Give it a try
Sent from my OVO Community ROM using XDA Premium App

But having sense 3.0 is a closer look too stock incredible and have great battery life
Sent from my OVO Community ROM using XDA Premium App

Nobrainer, the newest leak 2.3.4. Its only sense 1.0, so it would be familiar to her, no lag, no issues at all, and the best battery life for me on any sense rom.
If ive helped you, please hit the damn thanks button!

donnyp1 said:
Nobrainer, the newest leak 2.3.4. Its only sense 1.0, so it would be familiar to her, no lag, no issues at all, and the best battery life for me on any sense rom.
If ive helped you, please hit the damn thanks button!
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Click to collapse
I'd go this route or something VERY similar to it. Just don't flash the RUU. Try to find a rooted version of the ROM.
As for AOSP, I've flashed about 5 different AOSP ROMs on my dInc and none of them have been what I'd call stable and reliable. I'm NOT a fan of any of the launchers and I do NOT like having to spend days trying to dig through the Market and threads trying to find the stuff to make AOSP do most of what Sense does right out of the box. My girlfriend likes AOSP... and I just can't understand why, but I'm always messing with it trying to figure out why it's restarting, being all herky-jerky, not responding, doing weird things for no reason... And frankly, I don't think the battery life is all that much better on AOSP than Sense.

I don't know what about CM7 or MIUI isn't stable or reliable? What doesn't work on those roms that works on sense roms? IMO, sense is bloated, slow, and outside of social networking (which I couldn't care less about anyway), adds no real functionality when compared to AOSP. Also, AOSP roms are infinitely more customizable than sense. For people that like to mess with their phones and make them their own (which being XDA, I'd think a lot are in this category), there's just simply way more you can do with AOSP, and better kernels too!
Again, some of this is just my opinion, but I fail to see how our AOSP roms can be called unstable or unreliable. It all boils down to personal preference but to say that AOSP is not stable or reliable is simply not a true statement.

k_nivesout said:
I don't know what about CM7 or MIUI isn't stable or reliable? What doesn't work on those roms that works on sense roms? IMO, sense is bloated, slow, and outside of social networking (which I couldn't care less about anyway), adds no real functionality when compared to AOSP. Also, AOSP roms are infinitely more customizable than sense. For people that like to mess with their phones and make them their own (which being XDA, I'd think a lot are in this category), there's just simply way more you can do with AOSP, and better kernels too!
Again, some of this is just my opinion, but I fail to see how our AOSP roms can be called unstable or unreliable. It all boils down to personal preference but to say that AOSP is not stable or reliable is simply not a true statement.
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Going thru the miui or the cm7 nightly threads lately, it does appear that they also have their fair share of issues. The fact of the matter is, the leaked/rooted ota is very stable, very fast, and has great battery life. It also would have no learning curve for her and she could set up her screens to her liking with whats already familiar to her. Thats why i said no brainer. Aosp is nice, ive ran them all, but it really is just personal preference. Aosp battery can be just as bad if not worse than sense. I also found my self trying to make it look like sense, so now i use sense pretty much all the time. The diffrence between sense and aosp is preference and preference only.
If ive helped you, please hit the damn thanks button!

I definitely wouldn't hesitate to recommend the stock rom for someone that doesn't really mess with their phone that much and needs it to work without issue. I personally like to have a bit more control and feature additions. I mainly posted because it was being stated that AOSP roms were unstable and unreliable, and that's simply not the case. I have recently run CM7 nightlies and MIUI (current rom) without issue. I keep up on new features and bug fixes, and there isn't anything "buggy" about either of these roms. Pretty much the only things you're gonna be missing out on are 720p recording and tv-out functionality, but for me that tradeoff is well worth it considering the other benefits.
I can't really speak on battery life comparatively, because my phone hasn't seen a sense rom for more than a few hours since I got it, but I think the difference is mainly in the kernels. There are simply better options for AOSP (right now at least), the kernels have more battery saving features than what is available for GB sense. I see that they've gotten smartass working on the new GB sense kernel though, so I would think that would help. I imagine a lot of it also has to do with your accounts and sync settings as well, for example, I'd imagine if you had two phones (one on AOSP, one on stock sense) with the same governor settings and sync settings, battery life would be pretty similar.

I would think your probably right on that. I personally have had no issues with aosp roms or any of the new gb roms. I run basic configurations with minimal apps and minimal syncing. I only install 4 apps, so i can get a rom runnin pretty good for what i need.
If ive helped you, please hit the damn thanks button!

Im using the latest OMFGB nightly, no problems, no issues, everything works.
Please lengthen your message to at least 10 charters

my apologies. Was reading and accidentally quoted and posted a comment. *should be asleep right now*
Sent from my ADR6300 using Tapatalk

OP you will be flooded with opinions going in all directions, it depends what you want. Pretty much any ROM here is noticeably faster than stock with better battery.
If you're looking something closer to stock, but faster and with better battery life than I would suggest Skyraider:
http://rootzwiki.com/showthread.php?t=1314
Agreeing with nivesout, Sense adds some bloat to your phone- but some people just like the UI and don't mind whatever minimal extra lag or battery loss they get from it.
CM7 is a great AOSP ROM and just in general one of the top choices here. If you get this then you should probably download Launcher Pro (from market) instead of using ADW, but it's up to you.
MIUI is more appearance based and offers lots of theming options, however the luancher that comes with it is not as smooth as other launchers (can always be changed like you can do with CM7)
All of these ROM's are stable and well polished.
I would also suggest that you use chad's incredikernel for a custom kernel (saves battery and increases performance) and also flash the latest radio because it's trending that most people get better battery and faster speeds with it.

It seems like people are just reading his op title. Paragraph 2 states mods and themes are not what he is looking for. Its for his wife. If you go thru the new ota threads you will find people stating excellent battery life. The ota's are debloated and can be even more reduced with ti backup. His wife will have no issues with this rom, nor will she have to search market for apps, theme section for themes, install new kernels, yada yada ya.... The leaked, debloated, pre-rooted ota is a perfect solution for what he is looking for. Op, you can pm me if you have questions about which one to install.
If ive helped you, please hit the damn thanks button!

Thanks to all of you who took the time to reply. I appreciate everyone's input.
@donnyp1 Thanks for your suggestion, and if you want to put your recommendation in this thread that would be great or PM works too. What you said is pretty head on, keeping it simple and similar to what she is already used to would be great. Just need to get that battery in check.

The new OTA has given me the best battery life of any ROM I've used. However, HTC's kernel dislikes my car's Bluetooth module, so I'm back on CM7 for maximum compatibility till they or a kernel dev releases one that works with my car.
My vote is on the OTA. Fast, long lasting and very stable. As a second choice I say CM7. Only thing about CM7 is that she would have to spend more time setting it up.
The sense 2.1/3.0 and 3.0 roms still have some bugs and general performance issues without no real boon to battery life. Lockscreen and quick settings sure do rock though.
Sent from my Droid Incredible using the XDA app.

I have run all 3, and liberation beta 4 is really working well. I had no issues with any though. I used ti backup to remove the rest of the verizon stuff, it eorks fantastic. Display at 30%, i get great battery life on my phone. I also flashed the newest radio.
If ive helped you, please hit the damn thanks button!

Godsmacked's senseless 2.0 is a great blend of sense and aosp. Battery life is awesome, it flies, and I haven't had a single fc yet.

Maybe I'm wrong but I was always under the impression that Kernel effects battery life not ROM. I have been going between CM7 Nighties and MIUI.US, with their kernel only get 6 to 8 hours. But if I use incredikernel with incredicontrol I get between 18-27 hours depending on use. Incredicontrol enables fast charge and sound boost, also allows you to set min and max volts. I'm undervolted min 750 and stable with CM7 Nightly 173. I loved Nils' Business GingerSense 3.0 but I personally decided I can't live without incredikernel, so I will wait until he releases a gingersense kernel.
http://www.incredikernel.com/
I have not tried but there are mod's for Gingersense for better battery:
http://forum.xda-developers.com/showthread.php?t=1216306
For choices on ROM's best to go here:
http://forum.xda-developers.com/showthread.php?t=969371

I've been running MIUI for about a week now and I can't believe how great the battery life has been.

I personally have been using gingerbread-inc-deck with chads incredikernel as my daily for over a month now. It's stable and I've had great battery life. I've tested a few sense 3.0 roms, but the battery just doesnt seem to last as long for me.

Best rom/kernal combination

I'm pretty sure that this question has been posted alot of times but I need help deciding on a decent rom and a kernal which would go with it that has everything working and has the best battery life as well. I will probably get CM7 but idk which kernal will go best with it.
I also need help changing the LCD density of my screen. Before I switched to my EVO I owned a HTC HD2 and had pongsters hyperdroid on it which had lower LCD density allowing everything to be smaller on the phone.
Those are my questions please help. Thank you!
Sent from my PC36100 using xda premium

Not exactly sure what you mean by LCD density but I can help with the ROM kernel question.
As far as a ROM goes the best way to find the right one is to do 2 things.
1. Make a list of things you are looking for in a ROM. Stability, 4G, HDMI, Wireless Tether, etc. Then check out ROMs that contain stable versions with those features you emphasize.
2. Get flash happy. Flash a ROM, test it for a few days to a week and then flash another one. If you find yourself coming back to one specific ROM over and over again then that is probably the one you should stick with.
Check out this thread for some ROM ideas: http://forum.xda-developers.com/showthread.php?t=951057
A few ROMs that I didn't see mentioned in there are Myn's Synergy, Salvage-Mod, Sinister, Savaged Zen, and Swag.
As far as kernels go you have to remember a basic rule. Sense ROMs get paired with sense kernels and AOSP ROMs get paired with AOSP kernels. Then you do the same thing you did with the ROMs.
1. Make a list of what you want in a kernel. HAVS, SBC, overclocking, undervolting, etc.
2. Get flash happy and test which kernel matches your ROM the best with what you are looking for.
I know that may not be the exact answer you are looking for. But ROMs and kernels are all about personal preference and daily usage trends. each one has pros and cons that different people may or may not like. Check my ROM/kernel combination. It fits my usage habits, constantly using it at home and barely use it when out of the house, but it may not fit the way you use it. Experiment and have fun.
And here is a thread about kernels: http://forum.xda-developers.com/showthread.php?t=894880

Quite personally, I would suggest MIUI. If you're not into that kind of thing, I would suggest Deck's, who updated to stable yesterday!
Kernel, I would say Tiamat 4.0.8.
Look up Vipermod. Check my signature. Most phones can at least handle a -50 undervolt for the Tiamat mentioned above.
I would suggest the flashable GPS fix in my signature. Locks on quite accurately.
You may have a lot of cell standby drain. Check development section for a thread about Radio wakelock combination.
Best way to change the density would be to edit the build.prop but there are apps in the Market. Just search density changer
Sent from my PC36100 using xda premium

Flash Flash Flash
Then you will be able to find out what you like.
AOSP is always a winner for me.
Oh, and make sure you Nandroid.

I agree with both posts above, you have to try out roms for yourself since in every rom post you will see someone saying this is the best rom they have ever hadand battery life is super. Your question has been asked a million times before but like that millions of answers that were given it all boils down to personal choice.
I run AOSP with an sbc kernel but Lord knows you may find people here who would dispute the use of an sbc kernel. LCD Density apps are in the market or just use google for help. Sorry this is not a definitive answer but honestly just find a rom you like and give it a shot....

Thanks for all your answers time to get flash happy!
Sent from my PC36100 using xda premium

For me the best combo of performance and battery life has been SavagedZen and CM7. Completely transformed my perception of just well the evo should perform. Basically no compromises, Fast AND great battery life.

I'm using MikG 2.56 ROM with Aggressive Freedom kernel. Holding up pretty good.

For me the best combo is Decks Rom 1.3 + SavagedZen Kernel + Vipermod

I can get about 16 hours on MikG 2.56 (stock kernel) with moderate use. Damn near perfect ROM.

sai_iii said:
For me the best combo of performance and battery life has been SavagedZen and CM7. Completely transformed my perception of just well the evo should perform. Basically no compromises, Fast AND great battery life.
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Click to collapse
Which version of CM7 are you running? I'm on the 219 nightly and it kind of meh. I've tried savaged Zen with CM7.1 and it was good but my battery didn't seem to last as long during use so I decided to move on to other kernels. Are you running any supplementary battery apps?

Best/recomended MIUI rom?

Hello all.
I've been out the loop for a while now, still got stock sense on my DZ but have recently become very interested in MIUI roms. I have a few quick questions I hope someone can answer as after reading the various roms etc I'm a bit confused.
1. How well do MIUI roms work with the hardware keyboard? I'm seeing a few threads saying it isn't totally supported. This is a deal breaker for me really, can anyone clarify?
2. Which MIUI rom? I see there is an official one, but also others similar to official eg MIUIandroid, any particular 'best' version?
3. How is the battery life compared to sense? Does anyone have any current draw figures for screen off etc, my sense draws around 32mA screen off.
4. I assume they come with overclockable kernels, if so, is OC beater or whatever it's called still the best to use?
I'm interested to hear from MIUI users, sell it to me.

1. I've had no problems while using the keyboard with MIUI, it seems to work the same way as before. I have heard some people say that their backlights don't work but mine do. However, landscape is not supported on the homescreen but it is everywhere else.
2. I use the official english supported rom for Desire Z/G2, you can get it from ROM Manager or the MIUI website. I'm not sure about the best one because I've only used the official one.
I don't know about 3 and 4 but I do enjoy using MIUI. It was the first rom I used after I rooted my phone. I used to want sense but because of emoji support and themes I probably won't use another. I do recommend it as I have not been disappointed.

Thanks for replying.
Instead of exact current figures, maybe you could say what your typical daily use is like and what your battery level is at the end of the day?

I've tried miui us and miui android. Both are good and can tell any difference in look feel or performance. Also tried a couple of the miui v4 roms in the dev section. They are really good and give a snappier feel to the miui environment.
V4 is possibly better with battery but marginal. Compared to the stock rom I came from, battery is much improved. No figures I'm afraid as my days vary greatly. Camera is an issue on all ICS roms on the dz/g2 so decide if that's a problem or not.
Enjoy.
Sent from my HTC Vision using xda premium

Thanks for that.
I'm gonna flash the 'official' miuiAndroid tonight I think, need the camera so the ICS is a no go for now.
As long as battery is noticeably better than stock sense then I'll be happy.

Myrmidon83 said:
Thanks for that.
I'm gonna flash the 'official' miuiAndroid tonight I think, need the camera so the ICS is a no go for now.
As long as battery is noticeably better than stock sense then I'll be happy.
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good luck and enjoy. Give it a couple of charge cycles with the CPU adjusted you should see a significant improvement.
I generally run 900mhz Max with interactive governor.
Sent from my HTC Vision using xda premium

i definitely recommend the MIUIandroid version, the translation is far more complete. Miui.us just has faster servers! If you send/receive a bunch of picture messages, I suggest you download my modified Mms.apk from the link in my signature, more info is in that thread.
I've been using MIUI.au v4 for the last few days. pictures are slightly annoying, but if you take two or three, you usually get a good one, but the pictures do have to be taken in landscape.

Well I have been running it for the day and I have to say that I love it! Much better than sense, seems really stable and I love the customisation.
I was going to ask about that mms thing, I'll check the thread out.
As for the battery, it has run down quite quick today but I've been playing with it a lot and expect to need to have a few charge cycles till it settles.
One question though, does the OC/OVbeater overclocking thing work with this rom/kernel or should I stick with set cpu?

Myrmidon83 said:
One question though, does the OC/OVbeater overclocking thing work with this rom/kernel or should I stick with set cpu?
Click to expand...
Click to collapse
Just to give you an answer, I don't know. But it's an AOSP kernel so... it should!

Have you flashed the bulletproof addon? It adds the Vituous OC daemon as well as OC/UV Beater. From there you can operate as intended and should probably have no issues. Personally I've never been able to OC over 1,3GHz on any MIUI ROM, may be the Tiamat kernel for me though...Anyway the highest I'd go on MIUI would be just barely 1,3-1,4GHz! Practically you wouldn't be needing more than 1,2GHz for heavier apps but considering this is MIUI and is a bit heavier, 1,3GHz will cater your needs.
Otherwise, OC/UV Beater will work but it will be limited to just Normal configuration, since the Virtuous OC daemon (which I presume you use?) is not cooked in, hence it can not be configured. You also can't undervolt because viper uv is also not included. If you're not interested in flashing Bulletproof then I'd stick with either SetCPU or even CPU Tuner (switched to this over from SetCPU and liking the fact it has more extensive configuration, as well as less battery drain). You can find CPU Tuner in the market, if you're interested.
Also, battery life wasn't half as bad actually. I find the MIUI Launcher to be a bit heavy and more resource consuming for my use. You can use Go Launcher or ADW if you want though.

Take a look at the bulletproof add on pack. It includes some nice tweaks, one being a kernel that supports OCing.
Sent from my HTC Vision using xda premium

MarkyG82 said:
I've tried miui us and miui android. Both are good and can tell any difference in look feel or performance. Also tried a couple of the miui v4 roms in the dev section. They are really good and give a snappier feel to the miui environment.
V4 is possibly better with battery but marginal. Compared to the stock rom I came from, battery is much improved. No figures I'm afraid as my days vary greatly. Camera is an issue on all ICS roms on the dz/g2 so decide if that's a problem or not.
Enjoy.
Sent from my HTC Vision using xda premium
Click to expand...
Click to collapse
I will like to second that! Im running a MIUI V4 port by ajhavery and lenny_kano (MIUI_Au 4.0.3 base 2.3.2) and it is working very well. Except my battery life is not as good as the official MIUI ROMS. BTW Angel Camera from the market works perfectly on this ROM with no glitches.

crestofawave said:
Have you flashed the bulletproof addon? It adds the Vituous OC daemon as well as OC/UV Beater. From there you can operate as intended and should probably have no issues. Personally I've never been able to OC over 1,3GHz on any MIUI ROM, may be the Tiamat kernel for me though...Anyway the highest I'd go on MIUI would be just barely 1,3-1,4GHz! Practically you wouldn't be needing more than 1,2GHz for heavier apps but considering this is MIUI and is a bit heavier, 1,3GHz will cater your needs.
Otherwise, OC/UV Beater will work but it will be limited to just Normal configuration, since the Virtuous OC daemon (which I presume you use?) is not cooked in, hence it can not be configured. You also can't undervolt because viper uv is also not included. If you're not interested in flashing Bulletproof then I'd stick with either SetCPU or even CPU Tuner (switched to this over from SetCPU and liking the fact it has more extensive configuration, as well as less battery drain). You can find CPU Tuner in the market, if you're interested.
Also, battery life wasn't half as bad actually. I find the MIUI Launcher to be a bit heavy and more resource consuming for my use. You can use Go Launcher or ADW if you want though.
Click to expand...
Click to collapse
Oh so you can use the bulletproof add on with any miui rom then?
I'm using setcpu just now but I may try cpu tuner. I tend not to overclock to be honest, I'm more interested in underclocking when screen is off etc but I may try 900MHz or 1GHz, it's running very smooth at 800MHz though.

Myrmidon83 said:
Oh so you can use the bulletproof add on with any miui rom then?
I'm using setcpu just now but I may try cpu tuner. I tend not to overclock to be honest, I'm more interested in underclocking when screen is off etc but I may try 900MHz or 1GHz, it's running very smooth at 800MHz though.
Click to expand...
Click to collapse
1. Bulletproof addon is for ANY 2.3 based miui. NOT miui v4.
2. The chip in dz/g2 is designed to run at 1ghz. Htc just UCed it to save on juice and market it as a lower spec (that's how I understood it anyway). I find at 800 it just feels a touch laggy. That extra 100 takes the edge off.
Sent from my HTC Vision using xda premium

Does installing bulletproof clear any data at all?
Is it flashed from recovery?

Shouldn't clear anything. I say shouldn't as you can never guarantee it. I've never had any issues. Always a good idea to clear cache and dalvik when flashing anything. And yes, its flashed in recovery.
Sent from my HTC Vision using xda premium

So I flashed this at the weekend and so far all is well.
Though I must admit, I'm not noticing the battery gains I was hoping for, a minimal boost is all. It does kinda seem that it uses more with the screen on than it used to, some comparison figures for those interested, taken using battery monitor widget.
Screen Off
Stock Sense: 31-34mA current draw
MIUI: 28mA Current Draw
Screen On (taken as sitting at homescreen doing nothing)
Stock Sense: 147-190mA
MIUI: 137-230mA
It's probably still calibrating and I never wiped the battery stats. Would there be a benefit in doing so?
Also, I have noticed that when charging, the light goes green when charge is only around 90% done, any news on this?

The light goes green once the battery is > 90%, this is more or less intended behaviour.
There had been a recent announcement by a Google employee that wiping the battery stats has no visible battery life improvement. All it does is wipe the statistics file that shows you what uses your battery. What you can merely do is run the battery down to 20~% (wouldn't go below that as the failsafe might go off) and then back to 100% for 3-4 times, so that the Battery Meter can become more accurate. From there it is ideal to run it down to 20-30% twice every month in order to keep the battery health in good shape.
MIUI was merely created to be iPhone-ish, cool looking, and very user friendly. It looks awesome, inarguably, but battery life isn't it's strong point. I wouldn't be surprised if it draw more than Sense itself, too. ROM's that have the best battery life are barebones. These have a lot of features suppressed in order to save up in RAM as well as battery consumption. There's also little customizing you can do to them.
However, if you want a good battery life ROM that does not cost you anything in features, you should try Tsubus' ILWT CM7 ROM. It is a CyanogenMod 7 based ROM, that has been fine tuned for speed and battery life alike. I've been a user for a long time and the phones takes me easily through a day with plenty of juice left (about 40-50%). You will have to go through the above meter calibration process again.

Yeah I know and don't get me wrong, MIUI gets me through a day no problem, maybe I was just being a bit too hopeful.
Have to say though that I have fallen in love with MIUI, I can't imagine using another rom now.

well if you are looking to use the bulletproof addon then i made a rom myself with some mods included in it... you can check it out from the link in my signature...