[Samsung Galaxy Note 9 (Exynos) ROMs, Kernels, Reco] Eamo5:
FAQ

A FAQ section will be established as kernel development progresses. If you have any explicit unanswered questions, feel free to ask away. If you must contact me due to an issue, please report your device variant, ROM, firmware, vendor and previous kernel.

1. I can’t unlock / boot my phone! What do I do?

If you're stuck in a lockscreen loop, make sure you're on a firmware with a matching ramdisk to the kernel. Do not mix a CSC1 kernel ramdisk with a CSA2 ROM for example. Anytime the ramdisk is changed, it will be listed in the changelog. Are you on the correct firmware and vendor? If not, you can always flash this zip or revert back to previous versions through the Android File Host folder. Can anyone else successfully flash the kernel? If yes, verify the MD5 sum by referencing and ensuring a matching MD5 sum between the local file and the Android File Host file. Did I just push an update? If yes, contact me on Telegram in the Endurance Kernel group for a faster response, and XDA for an eventual response. Does your ROM require a permissive SELinux status to boot? If yes, use the 'Magisk SELinux Manager' module to adjust your SELinux status. If none of this can solve your problem, contact me through the Endurance Kernel group.​

2. Why doesn't my camera work after flashing the kernel?

Verify that you are on the correct firmware, vendor and a ROM that supports the current kernels sources. If you are still encountering issues after verifying this is correct, then let me know! If you do not wish to update, you can maintain a version of the kernel that does support your ROM by reading the changelog and downloading the previous versions from the Android File Host folder​

3. Why doesn't my Bluetooth work after flashing the kernel?

Are you on a ROM that does not patch libsecure_storage, such as DevBase? If your Bluetooth is broken, the answer is probably. Instead you can use ianmacd's Magisk module 'libsecure_storage companion for rooted Samsung devices' or you can manually flash a zip to patch it yourself, without the need for Magisk.​

4. Why doesn't my WiFi work after flashing the kernel?

Make sure you have forgotten and rejoined all WiFi networks after installing the kernel if the device won't connect to the network. If the devices WiFi won't turn on at all, make sure you do not have ianmacd's 'libsecure_storage companion for rooted Samsung (Oreo) devices' installed. If you're still encountering issues, please contact me in the Telegram group or on XDA.​

5. Should I use the permissive or enforcing SELinux status?

The decision is yours. There is plenty of documentation available online outlining their differences. I strongly recommend enforcing, hence why permissive is not officially supported. Permissive is far less secure, and hence I do not condone the use of permissive. If you are using permissive, you should either have to due to a dependency or have another specific reason for doing so. eg. ROM requires disabled signature check. For most users, unless directed otherwise, use the default enforcing build.​

6. When will you update the kernel?

Once ELS is updated and the kernel is ready! This is just a side hobby and I do have a life outside of kernel development. Be patient, the update will arrive within a few days if not ASAP.​

7. Will you add CPU / GPU undervolting?

No, EAS (Energy Aware Scheduling) has mostly made CPU undervolting mostly irrelevant. Google EAS if you would like it find out more information as to why it is the case. I've included a detailed YouTube video outlining the scheduling mechanisms of EAS here. Currently, any GPU voltage control for Exynos 9810 devices does not work, hence I will not be including it in my kernel.​

8. Do I need to install Magisk?

Magisk is entirely optional with this kernel.​

9. Why does this kernel offer no additional governors?

Because most of them are unstable and cause the device to crash, as well as EAS' integration with schedutil and EHMP.​

10. Why does this kernel makes my device crash / battery poor / performance poor?

Because this kernel is still in beta. Since I can't personally verify anything with the kernel, it's possible there may be issues. If this is the case, report it on the XDA thread or Telegram group.​

11. Why is my WiFi performance worse when using this kernel?

This may be the case for some people. This kernel uses the Westwood+ TCP algorithm for enhanced WiFi speeds on certain networks. However there may be scenarios on poor signal networks, this TCP algorithm may cause packet loss at a greater rate than is default. This should hopefully not be an issue for anyone, however if it is, try using bic as default and contact me.​

12. Why is my battery still terrible?

Are you in an area with poor signal reception? Unfortunately that is one thing a custom kernel cannot compensate for due to the device modem having restricted access and also legal issues. That leaves us with optimizations that can only be done to the SOC of the device. How you use your device can also greatly lead to variation in battery stats. If you are in need of further battery, 'underclocking' is available and is explained in OP. If you want the best battery life, I advise you try out that build.​

13. Why does SafetyNet fail on the AOSP kernels?

This is a minor issue I don't believe I can address on my end. This can be worked around however to allow SafetyNet to pass. You will need the 'MagiskHideProps' module installed. After rebooting, using a Terminal Emulator app enter the following commands in the order listed without quotation marks.

Type 'su'

Type 'props'

Type '1' to edit the device fingerprint

Type 'f'

Type '13' to select Samsung

Type '23' or '24'

Reboot

14. How can I use F2FS?

To use F2FS, you must erase your data and format your data partition (and optionally cache partition) to F2FS using the N9 TWRP available here, even if you are on S9. From there you should be able to reboot your device and restore your data through a backup.​

15. Where can I donate?

I used to not accept donations but while I'm undertaking my degree, a small donation could go a long way. You can donate through my PayPal link here.​