I am wondering how Kernel and ROM compatibility work, in simple terms. How do I know if a Kernel will work with a custom ROM?
For example, I was on a rom which came with M-Kernel, lean kernel, and stock kernel as options. I also am using Franco kernel on my phone. I've just flashed a new rom that did not have a kernel choice. How would I know if could use M-Kernel (or any kernel for that matter) with this ROM?
I know sometimes ROMs will list what kernels are recommended and some kernel pages will recommend roms, but what if they don't? Can any kernel work on any rom?
Thank you!
Each kernel thread will list what type of ROM they work on, AOKP, AOSP, Stock etc.
You can't always use any kernel you need to check the thread.
I'm actualy on AndroidParanoid 4+ Beta2 by Nims11 (i9100), Not the best perfomance, but this is still beta phase. And I'm litle confuse about kernel. Which one is the best option for this ROM? Any experience. Thanks.
Hello, i didn't find any answer so here's my question :
ROM :
What's the differences between 2 customs ROM ?
I mean, i have seen like 10 different ROM based on the same android version but i don't see any difference.
Why shouldn't I stay on Cyanogen ? I don't get it.
Kernel :
I think i kind of understand the benefit on a custom kernel (overclock, maybe better battery life ?) but isn't it too risky ?
How does kernel compatibility work ? Is it based on an Android version ? Do 5.0.0 kernel will be compatible with a 5.1.1 version ?
Do you really feel the difference compared to the stock cyanogen one ?
And my last question will be : does cyanogen 12 (and 12.1) have OTA update or do i have to flash new zip every day ?
Thanks !!
GinjiBan said:
Hello, i didn't find any answer so here's my question :
ROM :
What's the differences between 2 customs ROM ?
I mean, i have seen like 10 different ROM based on the same android version but i don't see any difference.
Why shouldn't I stay on Cyanogen ? I don't get it.
Kernel :
I think i kind of understand the benefit on a custom kernel (overclock, maybe better battery life ?) but isn't it too risky ?
How does kernel compatibility work ? Is it based on an Android version ? Do 5.0.0 kernel will be compatible with a 5.1.1 version ?
Do you really feel the difference compared to the stock cyanogen one ?
And my last question will be : does cyanogen 12 (and 12.1) have OTA update or do i have to flash new zip every day ?
Thanks !!
Click to expand...
Click to collapse
The ROMs might look the same but they're not. Features are implemented in different ways, plus there's a lot of unique code that you don't see which can affect many things, like speed and battery life. Also, you'll find that different ROMs have different feature sets. All in all it's up to you to decide which one is best for you, so have a look through them and pick one to test out. If you don't like it you can always flash another.
Custom kernels can offer extra features like overclocking, undervolting, fast charge while connected to a usb power source. There are risks involved, like if you overclock it can reduce the long term life of your CPU, undervolting too much will lead to instability.
CM12 (and 12.1) are nightlies which means there's a new build every day to update to (if you choose). You can either flash them manually or download via the OTA system. Not all ROMs have the OTA system.
Transmitted via Bacon
Thank you very much !!
Maybe i should dig more into the ROM's topic because their customs features are not listed anywhere.. That's too bad ^^
Do you know if all the gestures are implemented on CM 12 / 12.1 (not only double tap but all of them) ?
GinjiBan said:
Thank you very much !!
Maybe i should dig more into the ROM's topic because their customs features are not listed anywhere.. That's too bad ^^
Do you know if all the gestures are implemented on CM 12 / 12.1 (not only double tap but all of them) ?
Click to expand...
Click to collapse
Yes, as far as I know the gestures are implemented, they have been on all ROMs that I've tried anyway.
Transmitted via Bacon
timmaaa said:
Yes, as far as I know the gestures are implemented, they have been on all ROMs that I've tried anyway.
Transmitted via Bacon
Click to expand...
Click to collapse
Thanks again !
How come custom kernel like Franco's one can improve your battery life ? I've seen everyone talking about it ..
GinjiBan said:
Thanks again !
How come custom kernel like Franco's one can improve your battery life ? I've seen everyone talking about it ..
Click to expand...
Click to collapse
There are various differences between stock CM kernel and custom kernels, far too many for me to go into. Honestly though, the difference in battery life really isn't all that much. I never use a custom kernel and I still get great battery life.
Transmitted via Bacon
Hey guys, you who used stock 5.1 and custom ROMS that are having the latest Android version (5.1.1): what differences do you notice?
As we all know 5.1.1 is the latest version which fixes the memory leak, and Moto is still a version behind on 5.1.1: stock only is Android 5.1.
How would you compare stock to the latest Android version with the latest bugfixes and memory leak fix?
Would it be possible that Moto backported 5.1.1 fixes to stock 5.1?
Can a moderator edit "bases ROM's" to "5.1.1-based custom ROMS? I made a typo
Sparubens said:
Hey guys, you who used stock 5.1 and custom ROMS that are having the latest Android version (5.1.1): what differences do you notice?
As we all know 5.1.1 is the latest version which fixes the memory leak, and Moto is still a version behind on 5.1.1: stock only is Android 5.1.
How would you compare stock to the latest Android version with the latest bugfixes and memory leak fix?
Would it be possible that Moto backported 5.1.1 fixes to stock 5.1?
Click to expand...
Click to collapse
It is more a question of CM12.1 vs Stock ROM.
With the Stock Motorola Lollipop you have (at least in theory) a bug free ROM, it will work in every situation and scenarios.
Where with a custom ROM you will have more experimental features, a more tunable kernel and settings (that can either improve or break a ROM) and, to be honest, more support as they update almost every week where Motorola go very slow.
Pupet_Master said:
It is more a question of CM12.1 vs Stock ROM.
With the Stock Motorola Lollipop you have (at least in theory) a bug free ROM, it will work in every situation and scenarios.
Where with a custom ROM you will have more experimental features, a more tunable kernel and settings (that can either improve or break a ROM) and, to be honest, more support as they update almost every week where Motorola go very slow.
Click to expand...
Click to collapse
Yeah that's true. I was just wondering if the 5.1 version still has the memory leak which was resolved in 5.1.1. Also, CM12 based roms don't support notification tickers anymore, not even through Xposed so that's a bit pity too. But they do have features you can't find in stock or Xposed.
Just wondering which ROM gives the best performance, CM12 or optimized stock or just plain AOSP without any tweaks.
Sparubens said:
Yeah that's true. I was just wondering if the 5.1 version still has the memory leak which was resolved in 5.1.1. Also, CM12 based roms don't support notification tickers anymore, not even through Xposed so that's a bit pity too. But they do have features you can't find in stock or Xposed.
Just wondering which ROM gives the best performance, CM12 or optimized stock or just plain AOSP without any tweaks.
Click to expand...
Click to collapse
I can't say if Motorola fix the Memory issue or not. I can say too that some CM12.1 ROMs did have memory issues even at 5.1.1 but i think all are gone now.
About performance, a custom ROM for sure will bring you that. I'm not a big fan of motorola "optimizations" for our devices, in fact i would say they don't do at all.
It all depends really, you could get stock 5.1 with moggy kernel v12 which is very smooth being a linaro based kernel with other optimizations as well. (I was running that earlier today)
But you could also get a custom ROM such as blisspop. Which is very very poorly developed on our device.
A ROM that the developer uses as a daily driver is likely to be better than stock. However you'll find ROMs such as BlissPop where the developer does not run the ROM on our device and merely syncs with latest sources and uploads the builds without testing them first.
Those ROMs are likely to provide worse performance and definitely less stability than stock. Unless of course you flash a custom kernel over it, but then you've just got a sugar coated turd. And nobody wants a turd.
Sent from my XT1045 running CM 12.1 7/23 build with Optimus Kernel R38 using XDA Free mobile app
Travisholt92 said:
It all depends really, you could get stock 5.1 with moggy kernel v12 which is very smooth being a linaro based kernel with other optimizations as well. (I was running that earlier today)
But you could also get a custom ROM such as blisspop. Which is very very poorly developed on our device.
A ROM that the developer uses as a daily driver is likely to be better than stock. However you'll find ROMs such as BlissPop where the developer does not run the ROM on our device and merely syncs with latest sources and uploads the builds without testing them first.
Those ROMs are likely to provide worse performance and definitely less stability than stock. Unless of course you flash a custom kernel over it, but then you've just got a sugar coated turd. And nobody wants a turd.
Sent from my XT1045 running CM 12.1 7/23 build with Optimus Kernel R38 using XDA Free mobile app
Click to expand...
Click to collapse
YEs that is true, also there are some ROMs that are much more experimental then stable.
So a research would be need.
That being said, stock is always the safest bet but a nice custom ROM will be superior if he find one.
I'm personally very happy with Euphoria and the R35 version of the Optimus Kernel.
But you (@Sparubens ) would need to flash all the roms to find the one who fit you better, stock and non stock
It's worth considering the difference in Battery-life of Stock Firmware / ROMs in comparison to non-Stock custom ROMs. That could be an interesting thread.
Pupet_Master said:
YEs that is true, also there are some ROMs that are much more experimental then stable.
So a research would be need.
That being said, stock is always the safest bet but a nice custom ROM will be superior if he find one.
I'm personally very happy with Euphoria and the R35 version of the Optimus Kernel.
But you (@Sparubens ) would need to flash all the roms to find the one who fit you better, stock and non stock
Click to expand...
Click to collapse
I did flash almost every ROM here but there always seems to be an issue:
-CM12.1 is stable and fast, but doesn't have 4 tiles per row option in QS Settings and doesn't support notification ticker anymore (Xposed), SaberMod is smooth (Beeto) but there's a bug where you can't access SuperSU without dialing a code
- SlimROM wasn't a good experience when trying it to use as daily driver, sluggish and bad multitasking
- CM12.1 based ROMS like CrDroid and Euphoria I do really like, have some bugs like screen pinning causing reboot (CrDroid) and also no real Xposed support for CrDroid and Euphoria doesn't register all touches on the keyboard and makes my phone a bit hot, otherwise I would be very happy to have it as a daily driver, AICP was running okayish but there's been a bug for over a month that when opening the data quick menu, the percentage is misaligned, and it still hasn't been fixed.
- Stock 5.1 is nice, but it's a version behind 5.1.1 so that's not very nice either. Also heavily lacking in options, but I can use Xposed. Also there are 2 carrier labels on the lockscreen which makes no sense at all..
Also, in custom ROMS the torch doesn't seem to be functioning fully, the light density is not at it fullest. Sadly there seem to be some quirks with every ROM.
I'm ready to make compromises and have a ROM as daily driver which doesn't support notification ticker (basically all of them atm) but then there's also the torch issue sadly which pushes me more back to stock. But then again, nobody knows if stock still has the memory leak and opinions have been very different from person to person about stock 5.1.
Some interesting opinions over here, keep 'em coming!
@lost101 I personally think that there's no custom ROM that can match the battery life of stock, it has been impressive, surely on Lollipop.
Sparubens said:
Also, in custom ROMS the torch doesn't seem to be functioning fully, the light density is not at it fullest.
Click to expand...
Click to collapse
A solution for this problem seems not to be far away
http://forum.xda-developers.com/showpost.php?p=62028617&postcount=155
Sparubens said:
I did flash almost every ROM here but there always seems to be an issue:
-CM12.1 is stable and fast, but doesn't have 4 tiles per row option in QS Settings and doesn't support notification ticker anymore (Xposed), SaberMod is smooth (Beeto) but there's a bug where you can't access SuperSU without dialing a code
- SlimROM wasn't a good experience when trying it to use as daily driver, sluggish and bad multitasking
- CM12.1 based ROMS like CrDroid and Euphoria I do really like, have some bugs like screen pinning causing reboot (CrDroid) and also no real Xposed support for CrDroid and Euphoria doesn't register all touches on the keyboard and makes my phone a bit hot, otherwise I would be very happy to have it as a daily driver, AICP was running okayish but there's been a bug for over a month that when opening the data quick menu, the percentage is misaligned, and it still hasn't been fixed.
- Stock 5.1 is nice, but it's a version behind 5.1.1 so that's not very nice either. Also heavily lacking in options, but I can use Xposed. Also there are 2 carrier labels on the lockscreen which makes no sense at all..
Also, in custom ROMS the torch doesn't seem to be functioning fully, the light density is not at it fullest. Sadly there seem to be some quirks with every ROM.
I'm ready to make compromises and have a ROM as daily driver which doesn't support notification ticker (basically all of them atm) but then there's also the torch issue sadly which pushes me more back to stock. But then again, nobody knows if stock still has the memory leak and opinions have been very different from person to person about stock 5.1.
Some interesting opinions over here, keep 'em coming!
@lost101 I personally think that there's no custom ROM that can match the battery life of stock, it has been impressive, surely on Lollipop.
Click to expand...
Click to collapse
That's why we have a lot of roms outthere, everyone can choose what match better with everyone, if you want something without issues choose stock, but don't have the optimizations options, if you prefer the options, choose the one you consider is better, but always have to sacrifice something
Enviado desde mi peregrine mediante Tapatalk
Hi bro i want to know can i use same old kernel to ever updating CM rom will i face compatibility issue like please update your kernel or your kernel is too old ? Do kernel needs to be updated like rom?
Thanks&Regards
Rohan
If there is are significant changes in the rom after some updates; the kernel may become incompatible and hence flashing a more recent one will be required. You won't get any notifications/warning though, the now-incompatabile kernel will simply cause a bootloop. For example, the x-infinity is now not working anymore.
Broadcasted from Zeta Reticuli
Hello everybody,
I'm new to the rom and kernel community and have an ageing pixel 2 device as a DD. After spending a lot of time looking for the perfect combo (rom+kernel) for my device I still am unable to zero in on the right combo for me. I know that Performance and battery are the aspects I look for the most while keeping the build as stock to google as possible without losing features and everything worked if not the same, better than before. I need help from the community to choose.
I have read about numerous builds like Pixel experience, Lineage, Proton aosp, and kernels like kirisakura, sultan, xenial (v5/v6), kazuki etc. I wanted to make the jump to the latest a12 or 13 build available but did not know which rom to go for while not compromising on battery and performance. People ask to stay on a11 and update kernel instead, for that I know it will be xenial kernel since it is apparently better than even the regularly updated sultan (also xenial isnt built for a12+ which sucks) citing it has the most number of commits or whatever. Is there anyone who faced this and chose a route that made sense? I was thinking of Pixel experience or LOS 19 or proton maintained by Enes and flashing sultan considering he updates regularly. If there is an a11 that is inherently better than any a12 rom out there please let me know so I can just flash that and also flash the inherently better xenial kernel along with it. Bonus if you think blackened mod or PK's tuning script makes a difference and is better than new kernel and new rom.
Thanks in advance.