Switch L4T Ubuntu 5.1.2

L4T Ubuntu 5.1.2 Changelog

hekate 6.0.6 or newer is suggested for doing the necessary configuration to the bootstack and kernel.
Otherwise various features won't work correctly.

Kernel/Driver changes

• RAM for T210B01 is now actually allowed to reach max possible frequency
  In order for that to happen, DVFS was reworked to allow changes to GPU minimum voltage on the fly.
  If RAM frequency changes to one that requires more voltage, depends on GPU binning, it will now automatically get raised.
  That's dynamic and on idle or if ram bandwidth requirement and frequency drops, it switches back to stock minimum.
  That allows for more fine tuned power draws, without the need to have GPU min voltage raised all the time.
  Since RAM OC can raise GPU voltages, again, depends on GPU binning, consideration must be given based on needed workloads. Consult official wiki for more.
  All previous test results on max ram frequency are now obsolete.
• The memory PTSA driver's calculations were "reworked"
  That allows efficient use of ram when frequencies exceed 2133 MHz and especially when they exceed 2833 MHz
  Driver rework gets enabled automatically depending on bootloader version.
  On T210, that feature is disabled. Frequencies of > 2133 will just use the old method (exceeding 1.5 ratio).
• T210B01 RAM max frequency allowed is now 3200 MHz (raised from 3000)
• T210B RAM max frequency allowed is now 2366 MHz (raised from 2133)
• A critical issue was fixed that was disallowing a great number of Bluetooth devices to pair
• Fixed a rare bug that would cause a race condition and would stop the booting process
• Fixed all Nvidia bugs on T210B01's True RNG HW driver and a new driver was added to call it, so it can be used for rng seeding properly
• Joycon railed driver now allows more clones to work (for example non-bt clones that do not follow the proper procedure)
• An issue was fixed where the IMU input reports of Switch Lite gamepad would fail to be parsed if IMU chip was Invensense
• Fixed an issue where kernel would try to use CEC on docks with incompatible DP CEC emulation chip
• Added USB Serial driver for Silicon Labs CP210x

Ubuntu/Userspace changes

• Switch Multimedia package (ffmpeg-l4t, ffplay-l4t, mpv-l4t) was updated to allow proper fallback to software codecs.
  If pixel format of the medium is provided via probing, the hardware codec will check if it is out of spec (e.g x264/x265 instead of h264/hevc) and will use the software decoding for it.
  Additionally, lua/json scripting and osd-gui were enabled for mpv-l4t.
• System FFMpeg was updated with the same changes also
• mem-bench was updated to provide info on the selected timing reducing config. cfg: ### will show near the frequency.
• Added gpu-info-l4t command that reports an extensive info about the gpu included in the SoC
• Joystick to mouse/keyboard configuration was updated to properly reflect xpad-neo's mapping for Wireless Xbox controllers

Boot Stack changes

• Initramfs
  -- Now if Joycon BT pairing is redumped and Long Term Key (LTK) was changed, the bluetooth database gets updated with it.
  No need to remove the pairing or pairing files and reboot like before.
  -- Improved Volume button combo detection

• INI config
  -- ram_oc_vdd2, ram_oc_vddq now allow undervolting. Check wiki or config readme for minimum values.

• Misc
  -- Fixed an issue where 2397 MHz CPU frequency would not set
  -- UBoot-L4T was updated to latest

Full commit log:
https://github.com/CTCaer/switch-l4t-kernel-4.9/commits/linux-5.1.2
https://github.com/CTCaer/switch-l4t-kernel-nvidia/commits/linux-5.1.2
https://github.com/CTCaer/switch-l4t-platform-t210-nx/commits/linux-5.1.2

Wiki
Features: https://wiki.switchroot.org/en/Linux/FeaturesAndPrograms
Installation: https://wiki.switchroot.org/en/Linux/Ubuntu-Install-Guide

Switch L4T Ubuntu 5.1.1

L4T Ubuntu 5.1.1 Changelog

hekate 6.0.5 v2 or newer is mandatory for doing the necessary configuration to the bootstack and kernel.
Otherwise various features won't work correctly.

Kernel/Driver changes

• RAM OC support of 2133 for T210 and 3000 MHz for T210B01
• Improved calibration support for Lite Gamepad (Sio). Needs hekate v6.0.5 v2 or newer. Use the Dump Joy-Con BT.
• Fixed an issue where some Taishin/Silicon Power SD cards where they would fail to init
• Several extra checks were added for SD Card UHS DDR200 tuning.
  Any card that requires the Sandisk method of tuning and fails these checks is barred from using it and they fallback to UHS SDR104.
  ddr200_disable is now removed, since it was abused and no one reported the issue to the proper channels.
• Stick Calibration is now tighter for Joy-Con/Pro-Con/Lite controllers when factory or user calibration is empty or can't be acquired.
• Fixed an old railed Joy-Con issue which could make UART communications hang if it was plugged during suspend procedure.
• Added Generic and FTDI USB serial drivers as modules
• Support unfused BRCM4354 mascaraed as BRCM4356 WiFi chip on some old Switch units
• Add support for WiFi 5 GHz bonding restriction of VHT80 and VHT160 to mitigate possible bugs in the WiFi firmware if needed.

Ubuntu/Userspace changes

• mem-bench command was added. It is able to use most of RAM bandwidth. Use together with Perf OC All power profile for better results.
  Frequency reported there is the actual real frequency of RAM. Reason why it changes everytime, because of clock jitter.
• Fixed an issue with jc-dump-ltk command failing to acquire Pro-Con or Joy-Con Grip MAC addresses and LTK properly.

Boot Stack changes

• Initramfs
  -- Failed to find rootfs issues can now also be debugged via USB. Simply follow the instruction in the Red screen and connect to a PC.
  -- Added support for Procon auto BT pairing creation
  Simply add this in switchroot/joycon_mac.ini

  [joycon_02]
  type=3
  mac={MAC address of Procon}
  host={MAC address of Switch}
  ltk={LTK (connection key) of Procon}
  

  And fill in the {brackets} with the correct information. All of it can be acquired from the jc-dump-ltk command when you connect Procon via USB.
  Reminder that if the file is created anew, the line-endings MUST be Unix based. CRLF are not supported.

• INI config
  -- Added ram_oc_vdd2, ram_oc_vddq for fine tuning RAM voltage and improved ram_oc key. Read below for more.
  -- Added wifi_disable_vht80 key that can disable WiFi 5GHz bonding of VHT80 and VHT160 to mitigate possible bugs in the WiFi firmware if needed.
  All info can be found in README_CONFIG.txt also.

• Misc
  -- Added full proper factory calibration support for Lite Gamepad.
  Get latest hekate, v6.0.5 v2 or newer, and use Dump Joy-Con BT to enable it.

RAM Overclocking

RAM overclocking was significantly improved.
Now max frequencies allowed are 2133MHz for T210 and 3000 MHz for T210B01.
Can be set in ini. Guide will be in wiki also.

[ram_oc=0]

Set RAM Overclock frequency in KHz.

If you hang or get corruption or artifacts, try to reduce it.
Unlike HOS which uses encryption for storage, such situations are safer when
they are happening in L4T, so just set power profile to handheld and reboot.
mem-bench command can use almost all of the available bandwidth so it can be
used for a quick testing.
Actual stability can only be confirmed by memtester command on as high as
possible RAM temperature for several hours and with a big test size.
Running 2-4 instances of 128-256MB can help on running it on all RAM banks.
Running a secondary GPU benchmark can help raise temperature.

Creating more L4T boot entries in the ini with different RAM clocks can help
with fast testing. Especially when Reboot 2 Config from Switch tray icon is used.

Any clock increase will also increase RAM power consumption like a CPU/GPU OC.
For example on T210B01, with 1z-nm ram, going from 1866 to 2133 causes a
146 mW increase on active reads/writes which is 19.8%.
Any other state is affected only with a voltage change.

T210 (Erista max 2133 MHz):
List of supported frequencies:
1728000, 1795200, 1862400, 1894400, 1932800, 1958400, 1996800, 2035200,
2064000, 2099200, 2131200.

Input frequency is normalized to one of the above.

Suggested Jedec Frequencies:

• 1862400
• 2131200

Suggested Custom:

• Any, if it works.

T210B01 (Mariko max 3000 MHz):
List of supported frequencies:
1866000, 2133000, 2166000, 2200000, 2233000, 2266000, 2300000, 2333000,
2366000, 2400000, 2433000, 2466000, 2500000, 2533000, 2566000, 2600000,
2633000, 2666000, 2700000, 2733000, 2766000, 2800000, 2833000, 2866000,
2900000, 2933000, 2966000, 3000000.

Input frequency is generally normalized to one of the above.

Suggested Jedec Frequencies:

• 1866000
• 2133000
• 2400000
• 2666000

Suggested Custom Frequencies:

• Any, if it works.

Timing based overclocking:
To enable that, edit the last 2 (T210) or 3 (T210B01) digits of the frequency.

It's generally better to find a good base frequency before touching these.

Do not touch them at all for guaranteed stability on max possible frequency,
since without these, the whole configuration is exactly per Nvidia's and
RAM vendor's specifications.

Syntax:
T210: Freq MHz + BA. FFFFFBA. (1862400 -> 1862452)
T210B01: Freq MHz + CBA. FFFFCBA. (2133000 -> 2133252)

Description of F, A, B and C timing overclocking options:
[F]: Actual clock frequency.
Exceeding chip's real max is actual OC.

• Range: check above for T210 and T210B01 lists.

[A]: Base Latency reduction.
Base latency decreases based on selected frequency bracket.
Brackets: 1333/1600/1866/2133.

• Range: 0 - 3. 0 to -3 bracket change.
  Example 1: 1866 with 2 is 1333 base latency. Originally 1866 bracket.
  Example 1: 1866 with 3 is 1333 base latency. Originally 1866 bracket.
  Example 2: 1996 with 3 is 1333 base latency. Originally 2133 bracket.
  Example 3: 2133 with 2 is 1600 base latency. Originally 2133 bracket.
  Example 4: 2400 with 0 is 2133 base latency. Originally 2133 bracket.

[B]: Core Timings reduction.
Timings that massively get affected by temperatures are not touched.

• Range: 0 - 9. 0% to 45% reduction.

[C]: BW Increase. T210B01/LPDDR4x only. RAM Temperature limited timings.
Can cause significant ram data corruption if ram temperature exceeds max.
Reason is not allowed on T210 and LPDDR4.

• 0/1/2/3/4: for max 85/75/65/55/45 oC RAM temperature

RAM Temperature is only related to MEM/PLL sensors and not to Tdiode or Tboard.
45oC is 50/51 oC MEM/PLL (around 43 oC Tdiode, depends on temp equilibrium).
65oC is 68/69 oC MEM/PLL (around 60 oC Tdiode, depends on temp equilibrium).

Full Examples:

Old (no timing adjustments) OC equivalents:

• 1862 Old OC: 15% -> [A1,B3,C0] - 1866031
• 1996 Old OC: 25% -> [A2,B5,C0] - 2000052

T210:

• 1996800 -> 1996800: 1996 MHz with read/write base latency of 2133 MHz
  and proper 1996 MHz core timings.
• 1996800 -> 1996852: 1996 MHz with read/write base latency of 1600 MHz
  and reduced core timings by 25%.

T210B01:

• 2666000 -> 2666000: 2666 MHz with read/write base latency of 2133 MHz
  and proper 2666 MHz core timings.
• 2666000 -> 2666252: 2666 MHz with read/write base latency of 1600 MHz,
  reduced core timings by 25% and up to 65C operation.

Again, do not use them if you want the ram running like Nvidia and RAM vendor
made the tables, and write the frequency as is in that case.

[ram_oc_vdd2=0]

Changes VDDIO/VDDQ voltage for T210. VDDIO only for T210B01.
Can stabilize timing reduction. Do not use for zero reason.
It's useless on proper timings. It will just raise power draw for nothing.

• Range: 1100 - 1175. (Unit in mV).

[ram_oc_vddq=0]

Changes VDDQ voltage for T210B01.
Can stabilize timing reduction. Do not use for zero reason.
It's useless on proper timings. It will just raise power draw for nothing.

• Range: 600 - 650. (Unit in mV).

Full commit log:
https://github.com/CTCaer/switch-l4t-kernel-4.9/commits/linux-5.1.1
https://github.com/CTCaer/switch-l4t-kernel-nvidia/commits/linux-5.1.0
https://github.com/CTCaer/switch-l4t-platform-t210-nx/commits/linux-5.1.1

Wiki
Features: https://wiki.switchroot.org/en/Linux/FeaturesAndPrograms
Installation: https://wiki.switchroot.org/en/Linux/Ubuntu-Install-Guide

Switch L4T Ubuntu 5.1.0 r2

L4T Ubuntu 5.1.0 r2 Changelog

hekate 6.0.3 or newer is mandatory

Kernel/Driver changes

• SD/eMMC Dramatic Performance Increases
  Support for SD card UHS DDR200 allowing for up to 200MB/s on UHS-I bus (up from 104MB/s). (Needs hekate 6.0.3).
  That marks the first device in the world to even support this. (HW is 4 years older than DDR200 and doesn't provide official support).
  Read performance increased by 2-20% and write by 50-200% on SD and eMMC. That's by fixing an almost 2 decades old bug.
  Fixed an old Nvidia bug where it would decrease SD/eMMC performance by 60% after a deep sleep.
  Decreased latency/access times and improved random transfers (4k IOPS)
  Added support for SD card cache
  SD Card VDDC/VDDQ regulators are now disabled on deep sleep. Increases standby times dramatically on chipped switch that use the proper SD card VDD point.
  On failed inits, the SD card will now be power-cycled fully and driver will try to reduce bus timing progressively, instead of falling back to HS25 immediately. Finally, retries are now instant, instead of taking 2-5s.
  On 5.1.0 r2, SD cards that can't handle DDR200 without DLL tuning are barred from using it. For example Sandisk SD cards.
• Deep Sleep
  Significantly improved wake up speed on T210 and T210B01
  Significantly improved deep sleep on T210B01 (increased by ~10-15 days)
  Mitigated a T210B01 HW erratum and fixed several Nvidia driver bugs in SDMMC/PCIE/XUSB/USBPD drivers
• GPU DVFS for T210B01
  A new mode added for T210B01 that dramatically lowers power consumption on higher GPU clocks.
  That also allows GPU to reach 1228 MHz max on select binned GPUs.
  GPU clocks are now properly limited by max voltage and max power, increasing safety by not exceeding pmic current limits.
  That can also increase max GPU clock to 1152 MHz on select binned GPUs.
• Joy-Con/Pro-Con
  Improved Sio (Lite Gamepad) init
  Increased Sio input report rate to 120HZ (8ms) from 60Hz (16ms)
  Reduced traffic from rumble commands
  Added plug-in/removal detection via pins for railed Joy-Con
  Fixed an issue where the IMU input device would not be unregistered on removal of railed or wireless Joy/Pro-Con
• XBOX Controllers
  Added support for bluetooth XBOX controllers via XPAD Neo driver
  As with USB ones, userspace must load the module.
• WiFi/Bluetooth
  Updated firmware files to latest from HOS
  Fixed several bluetooth driver bugs
• USB-PD
  VCONN/VBUS is now managed on certain SKUs, increasing deep sleep dramatically.
• PCIE/XUSB
  Improvements to the drivers in all fronts.
  The Suspend/Resume fixes also increase deep sleep times dramatically.
  Fixed an issue where USB on dock would not work if booted docked.
• Built-in IMU
  Added support for STM LSM6DSO/LSM6DO and LSM6DSE 6-Axis IMU chips.
  Now the driver will also automatically choose between LSM6DS3H/DSO/DSE and ICM40607
• Added HW Random engine support for T210B01
• Fixed production settings for DisplayPort on T210B01
• Fixed several pmic settings
• Many more improvements/fixes

Ubuntu/Userspace changes

• Chromium Widevine Support for Movie/Series Streaming Services
  Chromium now supports Widevine DRM for streaming platforms. Most sites work via the normal icon.
  Others, like Netflix, need the Chromium Streaming one from the app menu.
• Switch Tray Icon
  The icon is now split into 2 sections. The Switch icon for tools and the Text profile one that allows Power/Fan management.
  The following features were added to the icon:
  Added Reboot 2 Config app for rebooting to a hekate boot entry with 2 simple steps
  Added OLED display color modes. You can now choose from several supported modes.
  Added Joy-Con Controls Mapping help. Shows how Joy-Con are mapped to keyboard/mouse and how to enable/disable it.
• Theme
  Unity Dash, the apps side bar, was updated to a modern flat theme.
• Apps
  Added tegrastats-l4t with better formatted output. Useful for live info and overlays. Can be launched from the Switch tray icon.
  Added jc-dump-ltk for dumping Bluetooth LTK key when user connects Pro Controller via USB. Can be also used for getting LTK from Joy-Con via Grip.
• Bluetooth
  Bluetooth now gets disabled in Sleep, for not needing user to turn off controllers manually.
  This also allows the whole wifi/bt combo chip to power down during sleep and thus decreasing power consumption.
• Optional support for DTS audio encoder (dcaenc) for DP/HDMI was added. If wanted, apt package is alsa-lib-dcaenc.
• Many more improvements/fixes

Boot Stack changes

• L4T Loader
  SD Card UHS DDR200 mode support (needs hekate 6.0.3 or newer)
  Allow early 2019 Samsung ram to be overclocked to 2133MHz for T210B01 (Mariko)
• INI config
  bt_ertm_disable allows disabling Bluetooth ERTM which might hinder usage of some Bluetooth devices
  ddr200_disable allows disabling the automatic SD Card UHS DDR200 support
  gpu_dvfsc allows dramatically decreasing GPU power consumption for Mariko on high clocks and allowing for higher clocks also
  limit_gpu_clk allows limiting max GPU clocks in case gpu_dvfsc is used and GPU can't withstand lower voltage
  As always, check README_CONFIG.txt for more info.
• Support for beefy pmic type of T210B01 devboards in U-BOOT

Full log:
https://github.com/CTCaer/switch-l4t-kernel-4.9/commits/linux-5.1.0_r2
https://github.com/CTCaer/switch-l4t-kernel-nvidia/commits/linux-5.1.0
https://github.com/CTCaer/switch-l4t-platform-t210-nx/commits/linux-5.1.0

Switch L4T Ubuntu 5.1.0

L4T Ubuntu 5.1.0 Changelog

hekate 6.0.3 or newer is mandatory

Kernel/Driver changes

• SD/eMMC Dramatic Performance Increases
  Support for SD card UHS DDR200 allowing for up to 200MB/s on UHS-I bus (up from 104MB/s). (Needs hekate 6.0.3).
  That marks the first device in the world to even support this. (HW is 4 years older than DDR200 and doesn't provide official support).
  Read performance increased by 2-20% and write by 50-200% on SD and eMMC. That's by fixing an almost 2 decades old bug.
  Fixed an old Nvidia bug where it would decrease SD/eMMC performance by 60% after a deep sleep.
  Decreased latency/access times and improved random transfers (4k IOPS)
  Added support for SD card cache
  SD Card VDDC/VDDQ regulators are now disabled on deep sleep. Increases standby times dramatically on chipped switch that use the proper SD card VDD point.
  On failed inits, the SD card will now be power-cycled fully and driver will try to reduce bus timing progressively, instead of falling back to HS25 immediately. Finally, retries are now instant, instead of taking 2-5s.
• Deep Sleep
  Significantly improved wake up speed on T210 and T210B01
  Significantly improved deep sleep on T210B01 (increased by ~10-15 days)
  Mitigated a T210B01 HW erratum and fixed several Nvidia driver bugs in SDMMC/PCIE/XUSB/USBPD drivers
• GPU DVFS for T210B01
  A new mode added for T210B01 that dramatically lowers power consumption on higher GPU clocks.
  That also allows GPU to reach 1228 MHz max on select binned GPUs.
  GPU clocks are now properly limited by max voltage and max power, increasing safety by not exceeding pmic current limits.
  That can also increase max GPU clock to 1152 MHz on select binned GPUs.
• Joy-Con/Pro-Con
  Improved Sio (Lite Gamepad) init
  Increased Sio input report rate to 120HZ (8ms) from 60Hz (16ms)
  Reduced traffic from rumble commands
  Added plug-in/removal detection via pins for railed Joy-Con
  Fixed an issue where the IMU input device would not be unregistered on removal of railed or wireless Joy/Pro-Con
• XBOX Controllers
  Added support for bluetooth XBOX controllers via XPAD Neo driver
  As with USB ones, userspace must load the module.
• WiFi/Bluetooth
  Updated firmware files to latest from HOS
  Fixed several bluetooth driver bugs
• USB-PD
  VCONN/VBUS is now managed on certain SKUs, increasing deep sleep dramatically.
• PCIE/XUSB
  Improvements to the drivers in all fronts.
  The Suspend/Resume fixes also increase deep sleep times dramatically.
  Fixed an issue where USB on dock would not work if booted docked.
• Built-in IMU
  Added support for STM LSM6DSO/LSM6DO and LSM6DSE 6-Axis IMU chips.
  Now the driver will also automatically choose between LSM6DS3H/DSO/DSE and ICM40607
• Added HW Random engine support for T210B01
• Fixed production settings for DisplayPort on T210B01
• Fixed several pmic settings
• Many more improvements/fixes

Ubuntu/Userspace changes

• Chromium Widevine Support for Movie/Series Streaming Services
  Chromium now supports Widevine DRM for streaming platforms. Most sites work via the normal icon.
  Others, like Netflix, need the Chromium Streaming one from the app menu.
• Switch Tray Icon
  The icon is now split into 2 sections. The Switch icon for tools and the Text profile one that allows Power/Fan management.
  The following features were added to the icon:
  Added Reboot 2 Config app for rebooting to a hekate boot entry with 2 simple steps
  Added OLED display color modes
  Added Joy-Con Controls Mapping help. Shows how Joy-Con are mapped to keyboard/mouse and how to enable/disable it.
• Theme
  Unity Dash, the apps side bar, was updated to a modern flat theme.
• Apps
  Added tegrastats-l4t with better formatted output. Useful for live info and overlays. Can be launched from the Switch tray icon.
  Added jc-dump-ltk for dumping Bluetooth LTK key when user connects Pro Controller via USB. Can be also used for getting LTK from Joy-Con via Grip.
• Bluetooth
  Bluetooth now gets disabled in Sleep, for not needing user to turn off controllers manually.
  This also allows the whole wifi/bt combo chip to power down during sleep and thus decreasing power consumption.
• Optional support for DTS audio encoder (dcaenc) for DP/HDMI was added. If wanted, apt package is alsa-lib-dcaenc.
• Many more improvements/fixes

Boot Stack changes

• L4T Loader
  SD Card UHS DDR200 mode support (needs hekate 6.0.3 or newer)
  Allow early 2019 Samsung ram to be overclocked to 2133MHz for T210B01 (Mariko)
• INI config
  bt_ertm_disable allows disabling Bluetooth ERTM which might hinder usage of some Bluetooth devices
  ddr200_disable allows disabling the automatic SD Card UHS DDR200 support
  gpu_dvfsc allows dramatically decreasing GPU power consumption for Mariko on high clocks and allowing for higher clocks also
  limit_gpu_clk allows limiting max GPU clocks in case gpu_dvfsc is used and GPU can't withstand lower voltage
  As always, check README_CONFIG.txt for more info.
• Support for beefy pmic type of T210B01 devboards in U-BOOT

Full log:
https://github.com/CTCaer/switch-l4t-kernel-4.9/commits/linux-5.1.0
https://github.com/CTCaer/switch-l4t-kernel-nvidia/commits/linux-5.1.0
https://github.com/CTCaer/switch-l4t-platform-t210-nx/commits/linux-5.1.0

Switch L4T Ubuntu 5.0.0

L4T Ubuntu 5.0.0 Changelog

hekate 6.0.1 or newer is mandatory to boot

Kernel/Driver changes

• RAM
  409MB RAM was freed from carveouts and was given to CMA so everything can easily use it with mmap
• Joycon/Procon driver
  Added support for Sio (Switch Lite gamepad)
  Improved HD Rumble and fix it once and for all
  Improved and reorder init sequence
  Improved high speed uart stability
  Fixed hangs when using hd rumble
  Changed Procon D-Pad from HAT to actual D-Pad
  Fixed HORI analog stick limits
• WiFi & Bluetooth
  Fully unlocked almost all WiFi channels,1-13 for 2.4GHz and 34-165 for 5GHz. 14/144 disabled).
  Many 5Ghz channels will only be used if there's an existing AP (radar detection), for regulation reasons.
  Fixed Bluetooth SCO mode (HSP/HFP). It now properly transmits audio instead of static
  Significantly improved signal on both WiFi 2.4GHz and Bluetooth since default is now USB2
  (USB3 can be enabled back via ini config)
• Battery Charger and Fuel Gauge
  Added Battery % regulation. Sets a limit to battery max % and it's quite useful for when device is always docked.
  Added support of charging disable via special GPIO
  Improve init sequence
• Audio
  Added Switch 2019/Lite/OLED speakers EQ
  Added fine controls for DAC speaker/headphone volumes
  Added minijack Mic support and Headset vs Headphones support
  Added Headset button support (all buttons work as play/pause)
  Refactored driver and improved init/deinit process
• R2P
  Refactored driver and added T210B01 support
  Check README_CONFIG.txt for more info on how it can be configured
• USB-C (DisplayPort/Power Delivery)
  Massively refactor USB-C driver, again.
  Support for PIN C (adapters that report 4 DisplayPort lanes only)
  Removed the requirement for at least 2 USB-PD profile to enable PD charging
  Added support for no DisplayPort (Switch Lite)
  Improve and make init sequence way faster
• Display
  Added OLED panel driver
  Added HDCP 1.x and 2.2 support for DisplayPort
  Fixed TSEC support
  Backlight will always get disabled before disabling LCD/OLED panel
• DisplayPort CEC
  Added support for CEC via DisplayPort
  Docking will change source to Switch automatically if supported
  CEC tv remote control
  Support for OLED dock
• Non-PD USB charger detect
  Added fine tuners for currents on USB charger detect
  Improve detection
  Set SDP when a gadget is enabled to 500mA only
• eMMC/SD driver
  Improve auto calibration
  Allow 1-bit mode
• XUSB
  Fixed T210B01 support
  Fixed USB3 device mode
  Added proper support for USB2-only mode
  Various fixes to USB phy and vbus
• Improved kernel driver init sequence. Saves around 4-6s of boot time.
• Added better panic error handling, the relevant log can now be dumped automatically by hekate.
• Added controls for disabling touch panel tuning on boot (some broken flex cables or panels might need that)
• Fixed IMU IRQ mode. This greatly improves IMU Acc/Gyro responsiveness. Also added new IMU chips support.
• Fixed an issue where Power button irq could be stack
• Fixed a hang on boot because of Squash FS driver
• Added DM-CRYPT support
• Fixed max77812 CPU/GPU/RAM regulator and enable it for T210B01
• Added max77801 3.3V regulator for Switch OLED
• Added a new TSKIN driver and changed temperatures and fan curves to match HOS exactly

Ubuntu/Userspace changes

• Theme and Icons
  Default theme and icons changed to more modern flat and dark one
  If you changed them before, you can use Tweaks from app menu to change it (Pop-Dark theme and Pop icons)
• On-Screen Keyboard
  Now rocks a new material you design look
  Add special key for Gamepads to Show/Hide it
  Enabled physical Keyboard detection
  Auto transparency on idle, so user can see behind it.
  Fixed an issue which would delay logout 2:30 minutes if osk is enabled
• Default settings
  Double click is now easier to do on touch
  Drag threshold increased to avoid miss-dragging instead of tapping
  ALS disabled for backlight control so user can enable it in ini config for emulators and games
  Changed Battery levels: Warns LOW at 15%, Warns Critical at 6%. Shutdowns at 4%
  Suspend after 10min idle at battery. Never at AC.
  Battery percentage always shown
  Cursor size default increased
  Default scaling changed
  Default Dash shorcuts changed so user can pin preferences without first unpinning
• Bluetooth A2DP profiles
  Automatic profile change
  Added AAC, AptX and AptX HD profiles
  Also fixed SCO HSP/HFP profiles
• Fixed 5.1 surround audio
• Dock-Handler
  Fully optimized and fast
  Saves boot time
  Works properly on Greeter
  CEC support
  PD power profile support (Will switch to Console if PD charger)
  Fixed crashes on boot
• Joycon Daemon
  Added Sio (Switch Lite Gamepad) support
  Now rumble works properly and also doesn't hang system
  Removed Procon management from Joycond. Now the controller can be used by any software
  IMU now accessible from every app
  Various bug fixes
• System FFMpeg updated to use latest HW Video codecs
• Switch Multimedia
  Updated to use the latest HW Video decoding/encoding
  (ffmpeg-l4t, ffplay-l4t and mpv-l4t)
  All video files now use SMPV Player by default for hw decoding
• Chromium Browser
  Full Vulkan HW acceleration support
  Full HW Video decoding support for H264 and VP8 videos
• Bluetooth is now disabled completely on sleep to save battery
  Enabled automatically on resume.
• Debloated and remade main image from scratch
• Joystick Mapping
  Based on L4T Megascript one and included by default
  Reworked all mappings to the following:
  A, B, X, Y --> Enter, Backspace, Esc, Task Switch
  Minus, Plus --> Rotate Screen, Show/Hide OSK
  L3, R3 --> Caps Lock, Middle Click
  Home --> Windows Key
  D-pad --> Arrow keys
  L/R Sticks --> Mouse, Scrolling
  Capture --> Disables(/Enables) mappings and allows it to be used as gamepad
• Now All updates can be done via APT. 5.0.0 will be the last image provided.
  Every new update will be done through Software Updates or Apt command.
• Updated ALSA profile to support all SKUs
• Added HDCP support if requested by an App that supports the api

Initramfs changes

• WiFi MAC address is now derived from SoC id
• BT MAC address if no joycon dump is derived from SoC id
• Added error checking at boot
  Fixes "bricks" where linux partition is corrupted but can be fixed
• Creating .reinit file flag in switchroot/ubuntu will force a re-extraction of Kernel and Modules/Firmware
  That should always be used if user updates BSP to another one (for example r32.7.3)
• If initramfs fails booting it will try to dump kernel log in sd first (l4t_initramfs_kmesg.log) before showing the red screen.

Boot Stack changes

• L4T Loader - specialized bootloader
• Full support for T210B01 (Switch 2019, Lite and OLED)
• .ini file is now the main configuration file and uenv.txt is obsolete (a backup is done for existing copies)
• All configs are described in README_CONFIG.txt
• Careful with what you are booting on T210B01 since it can create hangs in black screen or error messages.
  Error message will be shown if that's the case, to avoid a black screen hang.

L4T Ubuntu 3.4.0

Ubuntu Bionic 3.4.0

• Better performances in many scenarios (As always that should affect apps/games/emus/etc)
• Significant better deep sleep. (Measured at 582 hours. 440% better).
• Faster wake up from sleep.
• Saved 240MB ram (fb and active file page pool, aka always used pool)
• Memory remapping 800%-2000% speed up. Mostly used by emulators and VMs (and lot in android).
• Some other memory optimizations, plus enabled huge ram pages
• Faster kernel and OS boot.
• Fixed tearing issues for NVDEC/NVENC. (video hw accel)
• Lower latency for frame end calcs for builtin display
• Fixed Hori pads for joycond
• Fixed an issue where it would make railed jc to disconnect on rumble
• Joycon/Procon rumble was improved and intensity tuned for better user experience
• Kernel now uses the proper display panel init/deinit by checking panel id
• Improved dock/undock script
• Touch stays enabled now in dock mode. Users that use docks that do not cover the screen can use it as alternative input.
• Added low ram protection. Now instead of hanging for minutes it will only stutter for seconds until oom occurs and recovers ram
• Better seamless display on boot
• uenv.txt changed, read uenv_readme.txt. It's simple to transfer over custom settings.
• Reboot action can now be defined in new uenv.txt. Reboot back into Linux by changing reboot_action= from bootloader to via-payload.

Apps Changes:

• Full video HW decoding via new SMPV Player app (also supports youtube links)
• Full video HW encoding via ffmpeg-l4t
• Added L4T-Megascript app
  You can get or build various essential stuff, apps or emulators with a single click. All configured and optimized for Switch.
• Nvpmodel was updated to include Battery charging protection limits options
  Useful when you are constantly docked and want to protect battery's life.
  Limit gets saved and applied on boot.
  Reminder that discharging can't happen when plugged in. Even when charging is off, usb power is used to supplement system.
  So you need to discharge first if you want the battery % to go inside the limit.
  That also disables charging in sleep in order for the feature to work.
  If you reboot/shutdown, it gets disabled and re-enabled at the next L4T boot.

Full Changelog: linux-3.3.0...linux-3.4.0

L4T Ubuntu 3.3.0

Ubuntu Bionic 3.3.0

• Significant performance improvements
  CPU arch, RAM, GPU, general latency, etc optimizations.
  Affects gui, apps, games, emus, etc
• Significant deep sleep power draw fixes
  Now almost all non-needed devices power off on deep sleep and ram is set to appropriate frequency.
  (Touch panel, LCD, Joycon charging and many more devices now power off in deep sleep as they should)
• IO scheduler was changed to provide way faster storage IO
• Released 15 MiB extra ram
• Fixed voltage calculation for OC. It should provide more stable overclocking
• Refactored thermal management
  Fan profiles are now the same with HOS
  Added failsafes, throttling and force power off when very high temps for the board are reached
• Faster boot times
• Fixed issues with Joycon charging and Hori power on resume
• Fixed Power button issues
• Touch improvements
• Added Hori and Obirds rail support
• OTG now allows deep sleep, even if linux resides in a USB SSD.
• Various USB fixes
• Allow fuel gauge to wake up system and power off gracefully on empty battery
• Added support for many 3rd party docks
  These include Genki, Zenscreen, Nexdock and anything else that uses similar methods
  Basically, the support should reach 100% (docks that support DP via pin D)
• Fixed issues with fast charging when docked on boot
• Fixed other issues with charging on certain edge cases
• Fixed DP/HDMI when plugging console while sleeping
• Fixed DP/HDMI when already docked and waking up
• Dock led indicator now has a breathing light when sleeping
• Add exFAT partition support (boot driver still needs to be FAT32)
• Seamless display booting

Full Changelog: linux-3.2.0...linux-3.3.0

L4T Ubuntu 3.2.0

• DisplayPort support for non powered or powered hub
• PD and non PD ( SDP, CDP, DCP ) charger support
• OTG ( USB keys, HUB, displayport/hdmi/vga)
• Enabled swap compression ( ZSWAP & ZRAM )
• Improves IMU / Rotation coordinate - matrix
• Sleep/Wifi issues fixed

Full Changelog: https://github.com/CTCaer/switch-l4t-kernel-4.9/commits/linux-3.2.0