[KERNEL][PIE/TEN]LuisKERNEL Linux 4.9.215 for GTS4LVWIFI & GTS4LVLTE devices

[DarkBuf0n]

Great kernel.
Thank you for your work.
2 errors on my device:
Volume control from headphones.
Screen rotated in GCAM.

Request / Suggestion
If it is possible to activate the HDR function of the screen?

Thank you

 

[hagbardceline23]

Networking Filesystem

Does this kernel include any networking file system (cifs/nfs) ?
If not, is it possible to include this, or is there already any existing kernel available ?

 

[Zer0Sense]

Could somebody help.
Installed this from TWRP on my S6 Galaxy Tab into boot partition. Can't start device neither enter the download mode. Could something be done?

Solved: with wire could enter download mode and flash TWRP

 

[Madmansdeath]

Could somebody help.
Installed this from TWRP on my S6 Galaxy Tab into boot partition. Can't start device neither enter the download mode. Could something be done?

Solved: with wire could enter download mode and flash TWRP

This is for the S5e not S6 ?.
I don't think they're interchangable.

 

[Lord Sithek]

@TiTiB
Hello bro. I know you have great experience in rooting S5e Tab. I still hesitate to do it because I don't have much experience with rooting Samsung devices. Actually, I'm bit scared reading of all people's issues here and there... So I'd like to ask few questions and if you'd be so kind to answer, I'd be very grateful
1. Do you use or have used Luis kernel? If yes, does it present any issues interrupting daily use? I know about PC connection issue and I'm not sure if it's been resolved yet. I see this kernel was updated several times (latest update from May), but I didn't find straightforward answer if this issue is resolved. This kernel seems to good way to introduce root, but too many uncertainties
2. If I'm going to flash TWRP, is it better to do it BEFORE rooting with Magisk (but after flashing VBMeta with Odin), like suggested in the OP here, or should I root the tablet following AHE_XDA's tutorial and only then try to introduce TWRP?
3. Is it necessary/important/helpful to pre-root TWRP image with Magisk before flashing it, like suggested here: https://twrp.me/samsung/samsunggalaxytabs5ewifi.html ? I don't find any other mention of this method on XDA, but it is strongly recommended on the official TWRP site...

Thank you in advance for your patience with noob :cyclops:

 

[TiTiB]

@TiTiB
Hello bro. I know you have great experience in rooting S5e Tab. I still hesitate to do it because I don't have much experience with rooting Samsung devices. Actually, I'm bit scared reading of all people's issues here and there... So I'd like to ask few questions and if you'd be so kind to answer, I'd be very grateful
1. Do you use or have used Luis kernel? If yes, does it present any issues interrupting daily use? I know about PC connection issue and I'm not sure if it's been resolved yet. I see this kernel was updated several times (latest update from May), but I didn't find straightforward answer if this issue is resolved. This kernel seems to good way to introduce root, but too many uncertainties
2. If I'm going to flash TWRP, is it better to do it BEFORE rooting with Magisk (but after flashing VBMeta with Odin), like suggested in the OP here, or should I root the tablet following AHE_XDA's tutorial and only then try to introduce TWRP?
3. Is it necessary/important/helpful to pre-root TWRP image with Magisk before flashing it, like suggested here: https://twrp.me/samsung/samsunggalaxytabs5ewifi.html ? I don't find any other mention of this method on XDA, but it is strongly recommended on the official TWRP site...

Thank you in advance for your patience with noob :cyclops:

1. I've only used LOS 15.1 and its default everything. FWIW, I've used, and, loved Luis's ROMs on other devices in the past.
2. I followed AHE_XDA's tutorial exactly (I helped him write/test it), so I added TWRP *after* Magisk root.
3. iirc, and that is definitely questionable, I used the TWRP app (the only time I've used it, I think) to test it so we could then recommend an easy TWRP install method to others. Not sure if this made it to the thread though.

All in all, if you follow the guide *exactly* you shouldn't have any problems. But if you do, there are also instructions to go back to stock; which I had to do 3 or 4 times during the testing phase.

I've rooted 5 different Samsung devices and am of the opinion that it's *very* unlikely that you'll brick your S5e. And I use the term "brick" in the way it is meant to be used; render your device completely unrecoverable/dead "As useful as a brick". BTW, there is no such a thing as "soft brick". It's like someone being "kinda dead"; you either are, or are not.

 

[Lord Sithek]

1. I've only used LOS 15.1 and its default everything. FWIW, I've used, and, loved Luis's ROMs on other devices in the past.
2. I followed AHE_XDA's tutorial exactly (I helped him write/test it), so I added TWRP *after* Magisk root.
3. iirc, and that is definitely questionable, I used the TWRP app (the only time I've used it, I think) to test it so we could then recommend an easy TWRP install method to others. Not sure if this made it to the thread though.

All in all, if you follow the guide *exactly* you shouldn't have any problems. But if you do, there are also instructions to go back to stock; which I had to do 3 or 4 times during the testing phase.

I've rooted 5 different Samsung devices and am of the opinion that it's *very* unlikely that you'll brick your S5e. And I use the term "brick" in the way it is meant to be used; render your device completely unrecoverable/dead "As useful as a brick". BTW, there is no such a thing as "soft brick". It's like someone being "kinda dead"; you either are, or are not.

Thanks a lot for your answer. Yea, I think I'll just follow the main root instruction and will give a thought to TWRP only then - if it is really necessary in my case... Yesterday I've read all the "Root instructions" thread and I encountered Extall's method with TWRP App (I think this is what you meant) and sounds promising.

If you don't mind, I would have just two more minor questions, just to make sure
1. Assuming I'm rooted without TWRP, if ever something goes wrong and I'm stuck on bootloop, what should I do to recover without loosing all data? Should I flash in Odin magisk_patched.tar prepared during the rooting process and that's all?
2. Have you ever tried to update the stock rom after rooting without erasing user data? I saw somewhere brief instruction on how to do it, but I want to make sure if it is safe and you seems to me competent guy to ask this question

Thanks again!

Sent from my mido using XDA Labs

 

[MikyMuch]

The performance is beter compared to the stock kernel, but I found this bugs:
1. The tablet screen does not turn off when closing the cover.
2. Sometimes the system ui process stops working.

One sugestion, adding the possibility to overclock would be great for gaming I know the tablet is not designed for gaming but the temperatures are great.
Anyways, excelent work and thank you.

Edit: I use magisk 20.4 with busybox and fde.ai app, without fde.ai the system ui doesn't almost crash.

 

[masad8]

While building the kernel source using linaro 4.9 toolchain, I am getting the following error:

CC crypto/memneq.o
security/selinux/hooks.c: In function 'selinux_inode_copy_up':
security/selinux/hooks.c:3812:19: warning: 'sid' may be used uninitialized in this function [-Wmaybe-uninitialized]
error, forbidden warning: hooks.c:3812
scripts/Makefile.build:339: recipe for target 'security/selinux/hooks.o' failed
make[2]: *** [security/selinux/hooks.o] Error 1
scripts/Makefile.build:653: recipe for target 'security/selinux' failed
make[1]: *** [security/selinux] Error 2
Makefile:1094: recipe for target 'security' failed
make: *** [security] Error 2
make: *** Waiting for unfinished jobs....

---------- Post added at 05:05 PM ---------- Previous post was at 04:48 PM ----------

With Linaro 7.5, I get the following error:

CC fs/xattr.o
fs/namespace.c: In function ‘vfs_kern_mount’:
fs/namespace.c:1223:2: warning: this ‘if’ clause does not guard... [-Wmisleading-indentation]
error, forbidden warning: namespace.c:1223
scripts/Makefile.build:339: recipe for target 'fs/namespace.o' failed
make[1]: *** [fs/namespace.o] Error 1
make[1]: *** Waiting for unfinished jobs....
CC mm/compaction.o
CC kernel/bpf/percpu_freelist.o
CC kernel/bpf/stackmap.o
CC mm/vmacache.o
CC mm/interval_tree.o
Makefile:1094: recipe for target 'fs' failed
make: *** [fs] Error 2
make: *** Waiting for unfinished jobs....

 

[jgn.kit]

Great work!
Could you also provide a LuisROM for the gts4lvlte?

I would also really appreciate that :angel:

 

[kingwicked]

Any Chance of the Android 10 TWRP and Luis kernel update
for latest Samsung Stock Q Roms ?

 

[Essentrix]

Hi,
Been using this kernel since day one... Only thing I miss is further CPU governor options... Any chance they can be added in further version? Cheers

Sent from my SM-T720 using Tapatalk

 

[IngoPan]

usable on Android 10? Just updated on 720, thanks.

 

[Essentrix]

usable on Android 10? Just updated on 720, thanks.

Doesn't work with Android 10 stock. If using TWRP you can always back up your boot and try, but not functioning for me.

Sent from my BASIC using Tapatalk

 

[jsommers]

Hi
I try to flash Luis kennel via TWRP and adb it's fail said the file is corrupt. Can you verify please.

 

[DrGreem]

Any updates in regards Android 10 stock rom support?

 

[Essentrix]

Any updates in regards Android 10 stock rom support?

Yes would be great to have this kernel operating with Stock Android 10... is that a possibility 8224Freak?

 

[Beninjam9]

1. I've only used LOS 15.1 and its default everything. FWIW, I've used, and, loved Luis's ROMs on other devices in the past.
2. I followed AHE_XDA's tutorial exactly (I helped him write/test it), so I added TWRP *after* Magisk root.
3. iirc, and that is definitely questionable, I used the TWRP app (the only time I've used it, I think) to test it so we could then recommend an easy TWRP install method to others. Not sure if this made it to the thread though.

All in all, if you follow the guide *exactly* you shouldn't have any problems. But if you do, there are also instructions to go back to stock; which I had to do 3 or 4 times during the testing phase.

I've rooted 5 different Samsung devices and am of the opinion that it's *very* unlikely that you'll brick your S5e. And I use the term "brick" in the way it is meant to be used; render your device completely unrecoverable/dead "As useful as a brick". BTW, there is no such a thing as "soft brick". It's like someone being "kinda dead"; you either are, or are not.

I followed AHE_XDA's tutorial to the letter with no issues, but after installing TWRP, I can no longer boot my device into a rooted state as TWRP boots instead as it uses the same key combo. Was this an issue for you?

Thanks in advance for your help

 

[jckelsall]

I have the LTE version of the tablet (SM-T725 running android 10 (fully up to date), UK). The device is (so far) unmodified. It was bought through Vodafone, but has never had a network lock.

To give a general overview of my experience, I have rooted the majority of my android devices in the past, but this is my first Samsung device for a several years.

I have a few questions, I hope someone can answer them.

1 - Will unlocking the bootloader and installing this kernel/twrp/magisk, result in any features being lost? (Dex, HDMI, USB storage [plugging storage devices into the tablet], HD netflix, anything relating to knox, good lock, etc.)

1A - If any features will be lost, is it possible to restore them through, for example, a magisk module, and if so, which ones?

2 - Are there any apps I should expect to stop working completely?

3 - Is it possible to backup the tablet's data prior to unlocking the bootloader in a way that allows it all to be restored after installing this kernel/twrp/magisk?

4 - Is there anything else I should know before unlocking the bootloader and installing this kernel/twrp/magisk?

Thanks in advance to anyone who can offer any help in answering these questions.

Edit to add:

5 - How will future system updates work? Obviously OTA is out of the question, but what other methods are available?

 

[guhvanoh]

I have the LTE version of the tablet (SM-T725 running android 10 (fully up to date), UK). The device is (so far) unmodified. It was bought through Vodafone, but has never had a network lock.

To give a general overview of my experience, I have rooted the majority of my android devices in the past, but this is my first Samsung device for a several years.

I have a few questions, I hope someone can answer them.

1 - Will unlocking the bootloader and installing this kernel/twrp/magisk, result in any features being lost? (Dex, HDMI, USB storage [plugging storage devices into the tablet], HD netflix, anything relating to knox, good lock, etc.)

1A - If any features will be lost, is it possible to restore them through, for example, a magisk module, and if so, which ones?

2 - Are there any apps I should expect to stop working completely?

3 - Is it possible to backup the tablet's data prior to unlocking the bootloader in a way that allows it all to be restored after installing this kernel/twrp/magisk?

4 - Is there anything else I should know before unlocking the bootloader and installing this kernel/twrp/magisk?

Thanks in advance to anyone who can offer any help in answering these questions.

Edit to add:

5 - How will future system updates work? Obviously OTA is out of the question, but what other methods are available?

Most of your questions should really be asked in the Q & A section. Then head over to the Guides, News, & Discussion section to learn about rooting and stuff. Finally, return here for stuff on this kernel.

Sent from my SM-T720 using XDA Labs