Underworld Sense Kernel
This is a little something I have been working on. Thank you to those who tested under the "saturday morning" thread. Hopefully I will be able to continue to improve this kernel and add in additional modifications as time goes on.
And please remember this is a work in progress, so please let me know your results.
What's in this Kernel
Features
Stock Kernel 2.6.35.10
Patched to 2.6.35.14
Enabled Wireless N
Perflock Disabled
HDMI Fix
GPS Fix
3 Point Touch Check
10 Point Touch
Audio Boosted with On/Off Toggle (default setting is on)
Fast USB Charge with On/Off Toggle (default setting is off)
Reduced Wifi Voltage (battery savings)
Read Ahead Buffer Upped to 1024kb
O/C to 1.229Ghz
HAVS with Sysfs
Undervolted to LEE Kernel Settings (tiamat)
Compiler Optimizations
Superior Battery Charging (SBC)
Boosted Audio More
Extend Wifi Range
Removed CIQ (Please note - you may encounter problems if you rom has ciq in it)
Flashlight Cutoff Reduced to 10% from 15%
Increased GPU Memory Allocation
CIFS (compiled as module)
TUNS (compiled as module)
Front Facing Camera Fix (for inverted) (should work on all gingerbread sense)
Swap Enabled
Fixed Hotspot for some users
2 Way Call Record
Memory/Scheduler tweaks
RCU Tweaks
LZMA Compression
Removed Some Debug Code
Enabled EXT4 Support (applied performance patch)
Add ZRAM (Lzo_compress/decompress) as modules)
Add HTC Kineto_gan support for wifi calling
Reduce vfs_cache_pressure from 70 to 50
Wifi is PM_FAST in standby
Increased Min Voltages from 925 to 950
Governors
SmartassV2 (set as default)
InteractiveX
Intellidemand
OndemandX
Smartass
Conservative
Ondemand
Userspace
Performance
Interactive
Schedulers
SIO (set as default)
NOOP
Deadline
CFQ
v(R)
BFQ
Instructions
Apply with your preferred custom recovery.
For Kernel Install
Make sure to wipe Dalvik Cache and Cache.
For SBC
And make sure the phone is fully booted before plugging it in.
For HAVS with sysfs interface
You will be able to use Vipermod to change the voltages. To be able to save changes you will need a rom with init.d support baked in. The kernel has already been undervolted, but since everyone results vary depending on their devices, this interface will allow you to drop it lower, just like you have been able to in the AOSP roms.
For Audio Boost to turn on and off
For USB Fast Charge to turn on and off
The below code will toggle it in the terminal, but a cool way to turn it on and off would be to support the original dev who put this mod together, chad0989 by purchasing his widget that controls this version of usb fast charge as well as the patch version. LINK TO WIDGET
Thanks to Capt_Throwback for finding out a reason for some of the lag complaints. It appears that the Vipermod script installs an older copy of busybox onto the phone. I have attached a copy of the vipermod install script that does not install any busybox.
Credits
I am grateful to all, from the developers, to the end users who
provide the feedback and use what is created.
More specifically (in alphabetical order) I would like to credit
the following developers for their work.
atyoung
barnacles10
cayniarb
chad0989
detcup4evr
drellisdee
faux123
lithid
ms79723
netarchy
paulmck
TeamWin
tiny4579
toastcfh
ziggy471
Also I would like to thank 2 alpha testers who kept me going
swagstr
tommytomatoe
Also I would like to thank the man who tested the front facing camera fix
buckhunter (tested all 4 options I wanted to check) and is now almost constantly testing whatever insane thing I ask him to flash and test, lol
sclarktay4
And a special thanks to the following donators who gave me some diaper money for the son.
eggsack
Wisiwyg
Disclaimer
As with all things, not every variant can be accounted for. Please use at your own risk. I am not responsible for any damages/bricks/etc that may accompany use of this kernel.
Bug Reporting
Post a reply in this thread or pm me, and I will do my best to assist and/or correct bugs.
Update History
v0.8
Enable ext4 support
Ext4 performance patch
Add zram (lzo_compress/decompress) as external modules
Add HTC kineto_gan support for WiFi calling
Reduce vfs_cache_pressure from 70 to 50
Wifi is PM_FAST in standby
Increase min voltages to 950 to make more universal
Upgrade bfq to BFQ-v3r1
Modified several of the governors
Added no Havs versions
v0.7
RCU Tweaks
rcu: repair code-duplication FIXMEs
rcu: combine duplicate code, courtesy of CONFIG_PREEMPT_RCU
rcu: apply TINY_PREEMPT_RCU read-side speedup to TREE_PREEMPT_RCU
rcu: fix sparse errors in rcutorture.c
rcu: Add tracing data to support queueing models
use lzma instead of gzip
removed some debugging code to clean things up
v0.6
Tiny_Preempt_Rcu Added (smaller footprint)
Changed Audio boost to on/off toggle
USB Fast Charge and on/off toggle
Patched up to 2.6.35.14
Tweaked SIO/VR/Deadline Schedulers
2 Way Call Record Added per Request
Memory/Tweaks:
Reduce vfs_cache_pressure from 100 to 70
SLQB Memory allocator added
Tweak io schedulers for flash devices (deadline,sio,vr)
Ashmem: fix deadlock when system is low on memory
Interactive/InteractiveX fix possible divide by 0
Some memory copy macros and functions
Add 10 microsec delay before fetching setup_data (usb)
Fix scaling_available_frequencies sysfs
v0.5
BFQ Scheduler Added
OndemandX Governor Added
Swap Enabled
Fixed Hotspot for some users
v0.4
Fixed the front facing camera with kernel modfications
v0.3
Removed CIQ
Extended Wifi Range
Flashlight cutoff reduced to 10%
Increased GPU memory allocation
CIFS (compiled as module)
TUNS (compiled as module)
Tweaked Smartassv2
Fixed SIO to be default scheduler (again, lol)
Added Interactive Governor
v0.2 - Initial Release
v0.1 - Test Release.
Links
Underworld v08 HAVS, No SBC
Underworld v08 No HAVS, No SBC
Underworld v08 No HAVS, SBC
Underworld v08 HAVS, No SBC
Github
This is a little something I have been working on. Thank you to those who tested under the "saturday morning" thread. Hopefully I will be able to continue to improve this kernel and add in additional modifications as time goes on.
And please remember this is a work in progress, so please let me know your results.
What's in this Kernel
Features
Stock Kernel 2.6.35.10
Patched to 2.6.35.14
Enabled Wireless N
Perflock Disabled
HDMI Fix
GPS Fix
3 Point Touch Check
10 Point Touch
Audio Boosted with On/Off Toggle (default setting is on)
Fast USB Charge with On/Off Toggle (default setting is off)
Reduced Wifi Voltage (battery savings)
Read Ahead Buffer Upped to 1024kb
O/C to 1.229Ghz
HAVS with Sysfs
Undervolted to LEE Kernel Settings (tiamat)
Compiler Optimizations
Superior Battery Charging (SBC)
Boosted Audio More
Extend Wifi Range
Removed CIQ (Please note - you may encounter problems if you rom has ciq in it)
Flashlight Cutoff Reduced to 10% from 15%
Increased GPU Memory Allocation
CIFS (compiled as module)
TUNS (compiled as module)
Front Facing Camera Fix (for inverted) (should work on all gingerbread sense)
Swap Enabled
Fixed Hotspot for some users
2 Way Call Record
Memory/Scheduler tweaks
RCU Tweaks
LZMA Compression
Removed Some Debug Code
Enabled EXT4 Support (applied performance patch)
Add ZRAM (Lzo_compress/decompress) as modules)
Add HTC Kineto_gan support for wifi calling
Reduce vfs_cache_pressure from 70 to 50
Wifi is PM_FAST in standby
Increased Min Voltages from 925 to 950
Governors
SmartassV2 (set as default)
InteractiveX
Intellidemand
OndemandX
Smartass
Conservative
Ondemand
Userspace
Performance
Interactive
Schedulers
SIO (set as default)
NOOP
Deadline
CFQ
v(R)
BFQ
Instructions
Apply with your preferred custom recovery.
For Kernel Install
Make sure to wipe Dalvik Cache and Cache.
For SBC
And make sure the phone is fully booted before plugging it in.
For HAVS with sysfs interface
You will be able to use Vipermod to change the voltages. To be able to save changes you will need a rom with init.d support baked in. The kernel has already been undervolted, but since everyone results vary depending on their devices, this interface will allow you to drop it lower, just like you have been able to in the AOSP roms.
For Audio Boost to turn on and off
Code:
Audio Boost On
echo 1 > /sys/kernel/audio_boost/aboost
Audio Boost Off
echo 0 > /sys/kernel/audio_boost/aboost
Query Audio Boost Status
cat /sys/kernel/audio_boost/aboostThe below code will toggle it in the terminal, but a cool way to turn it on and off would be to support the original dev who put this mod together, chad0989 by purchasing his widget that controls this version of usb fast charge as well as the patch version. LINK TO WIDGET
Code:
USB Fast Charge On
echo 1 > /sys/kernel/fast_charge/fast_charge_usb
USB Fast Charge Off
echo 0 > /sys/kernel/fast_charge/fast_charge_usb
Query USB Fast Charge Status
cat /sys/kernel/fast_charge/fast_charge_usbCredits
I am grateful to all, from the developers, to the end users who
provide the feedback and use what is created.
More specifically (in alphabetical order) I would like to credit
the following developers for their work.
atyoung
barnacles10
cayniarb
chad0989
detcup4evr
drellisdee
faux123
lithid
ms79723
netarchy
paulmck
TeamWin
tiny4579
toastcfh
ziggy471
Also I would like to thank 2 alpha testers who kept me going
swagstr
tommytomatoe
Also I would like to thank the man who tested the front facing camera fix
buckhunter (tested all 4 options I wanted to check) and is now almost constantly testing whatever insane thing I ask him to flash and test, lol
sclarktay4
And a special thanks to the following donators who gave me some diaper money for the son.
eggsack
Wisiwyg
Disclaimer
As with all things, not every variant can be accounted for. Please use at your own risk. I am not responsible for any damages/bricks/etc that may accompany use of this kernel.
Bug Reporting
Post a reply in this thread or pm me, and I will do my best to assist and/or correct bugs.
Update History
v0.8
Enable ext4 support
Ext4 performance patch
Add zram (lzo_compress/decompress) as external modules
Add HTC kineto_gan support for WiFi calling
Reduce vfs_cache_pressure from 70 to 50
Wifi is PM_FAST in standby
Increase min voltages to 950 to make more universal
Upgrade bfq to BFQ-v3r1
Modified several of the governors
Added no Havs versions
v0.7
RCU Tweaks
rcu: repair code-duplication FIXMEs
rcu: combine duplicate code, courtesy of CONFIG_PREEMPT_RCU
rcu: apply TINY_PREEMPT_RCU read-side speedup to TREE_PREEMPT_RCU
rcu: fix sparse errors in rcutorture.c
rcu: Add tracing data to support queueing models
use lzma instead of gzip
removed some debugging code to clean things up
v0.6
Tiny_Preempt_Rcu Added (smaller footprint)
Changed Audio boost to on/off toggle
USB Fast Charge and on/off toggle
Patched up to 2.6.35.14
Tweaked SIO/VR/Deadline Schedulers
2 Way Call Record Added per Request
Memory/Tweaks:
Reduce vfs_cache_pressure from 100 to 70
SLQB Memory allocator added
Tweak io schedulers for flash devices (deadline,sio,vr)
Ashmem: fix deadlock when system is low on memory
Interactive/InteractiveX fix possible divide by 0
Some memory copy macros and functions
Add 10 microsec delay before fetching setup_data (usb)
Fix scaling_available_frequencies sysfs
v0.5
BFQ Scheduler Added
OndemandX Governor Added
Swap Enabled
Fixed Hotspot for some users
v0.4
Fixed the front facing camera with kernel modfications
v0.3
Removed CIQ
Extended Wifi Range
Flashlight cutoff reduced to 10%
Increased GPU memory allocation
CIFS (compiled as module)
TUNS (compiled as module)
Tweaked Smartassv2
Fixed SIO to be default scheduler (again, lol)
Added Interactive Governor
v0.2 - Initial Release
v0.1 - Test Release.
Links
Underworld v08 HAVS, No SBC
Underworld v08 No HAVS, No SBC
Underworld v08 No HAVS, SBC
Underworld v08 HAVS, No SBC
Github
Last edited:
