Android 11 [2021] Base Releases

CIV_01.21.03.39_A11

  • This is a Production Binary Release for evaluation and development purposes . This release is supported on Intel NUC Kit NUC11PAQI7 Celadon in VM.

Intended audience

Customer support

Introduction

New in this release

  • New features

    • Power Management - Suspend/Resume - Stability

    • Intel Sensor Hub

    • Config WLAN

    • Audio HDA Mediation

    • Compliance production targets achieved

  • Existing features

    • This release uses start_civ.sh to launch Link -https://docs.01.org/celadon/getting-started/on-vm.html?highlight=start_civ#use-start-civ-sh

    • AAC-LC, AAC-ELD, HEAAC, HEAAC-V2, VORBIS, OPUS, FLAC, PCM/WAV formats

    • Power Management - Suspend/Resume

    • Local Video Playback with Widevine DRM - Level 3

    • External USB Camera

    • API Level 30 & FCM target Level 5

    • Other Changes that came as part of API level Up

      • AIDL for Power and Light HALs

      • Audio & Audio effects HAL 6.0

      • Health HAL 2.1

      • Boot HAL upgraded to 1.1

    • Upgraded Mainline modules

    • Soft restart

    • Updatable APEX

    • Config store HAL deprecated

    • Graphics Memory Allocator (Gralloc) 4.0

    • HWC 2.4 support for Display

    • Trusty Hardware Seed binding

    • Power Management - Suspend,Resume

    • Android* key Input Manager Framework is implemented for Power & Volume buttons

    • Integrated Sensor Hub Enablement for Android Supported Sensors

    • Android Thermal HAL and Thermal Manager Service

    • BZIP2 performance improvements

    • Bluetooth Control from Android in VM

    • HDMI Audio Output Support

    • Virtio-gpu Support

    • SDHCI mediation enabled and supported SD card

      • CIV launch script for SD Card: sudo -E ./scripts/start_civ.sh -d GVT-d -b /dev/mmcblk0p1 –passthrough-pci-usb

    • Graphics GVT-d support

    • HDMI and DP display support

    • Mass Storage USB 2.0 and 3.x devices is supported

    • Adb over WIFI and Ethernet is supported

    • Audio playback over USB Headset, 3.5mm and HDMI are supported

    • Setting Proxy for Wireless Network

    • Wi-Fi 802.11 a/b/g/n/ac/ax and Bluetooth 4.2

    • Ethernet works fine with Ethernet to USB converter

    • Wifi Control from Android in VM using usb passthrough

    • To passthrough USB host controller in NUC11PAQI7, run the CIV launch script like this: sudo E ./scripts/start_civ.sh -g GVT-d –passthrough-pci-usb

    • Power Management - Shutdown and Reboot

    • Android Time keeping with Host OS

    • Product Information to Guest OS

    • ODM partition for vendor customizations

    • Only logitech C922 pro stream webcam is supported for all camera related testing

    • HW Video Codecs support on celadon

      Decoder

      • AVC High profile @ Level 5.1 (4k@30fps)

      • HEVC Main and Main 10 profile @ Level 5 (4k@30fps)(Main 10 with BT2020 and ST2084 information is not supported)

      • VP9 profile 0 @ Level 5 (4k@30fps)

      • Vp8 8 bits 1080p@60fps

      Encoder

    • Audio decoders supported: MP3, AAC-LC, AAC-ELD, HEAAC, HEAAC-V2, VORBIS, OPUS, MIDI, FLAC, PCM/WAV

    • Generic storage HAL supported

    • SATA emulation is supported

    • 9pfs based file transfer

    • Security SELinux enforcing, Trusty TEE, File Based Encryption, Trusty, Keymaster 3.0

      • User guide:

        • SELinux Configuration and Rules

        • How to Enable or Disable Trusty for Debugging

  • Changes to existing features

    • Dynamic routing to HDMI audio devices

  • Unsupported or discontinued features

Known issues

  • Android UI Flicker when booted with eDP Display

  • Blank screen is displayed while video playback [Configuration : GLrenderer-Virtio] & [GLrenderer-Softpipe]

  • Camera Preview Flickers while using MultiCamera application

  • IPV6 network does not work for usb2ethernet converter in recovery mode

  • Modification of time zone when “Use network-provided time” should be disabled

Where to find the release

System Requirements

  • Recommended system requirements for Host:

    • CPU: 4 cores or more

    • RAM: 8 GB or more

    • Hard-Disk: 250 GB [Desired]

How to install this release

  • Steps to sync to this release

  • Android build commands

    • For Compilation please use Ubuntu 18.04

    • source build/envsetup.sh

    • lunch caas-userdebug

    • make flashfiles -jN

  • Steps To build the host kernel for this manifest

    • Download caas-releasefiles-userdebug.tar.gz and put it under ~/civ

    • cd ~/civ && tar zxvf caas-releasefiles-userdebug.tar.gz

    • cd patches/kernel/lts2019-chromium

    • ./build_weekly.sh

    • Deb files will be generated in patches/kernel/lts2019-chromium/host_kernel

    • sudo dpkg -i *.deb

    • Update grub to wait indefinitely for kernel selection on boot

      • sudo vim /etc/default/grub

      • Comment out GRUB_TIMEOUT_STYLE=hidden #GRUB_TIMEOUT_STYLE=hidden

      • Uncomment the following line and modify grub timeout to -1 for indefinite wait or 5 for 5secs wait #GRUB_TIMEOUT=-1

      • Save the file

      • sudo update-grub

    • sudo reboot

    • Select compiled kernel from “Advanced options for Ubuntu”

  • Flash and run steps

    • Download flash-files [https://github.com/projectceladon/celadon-binary]

    • Untar <flash-files>

    • sudo -E ./scripts/setup_host -u headless

    • sudo -E ./scripts/start_flash_usb.sh caas-flashfiles-eng.<user>.zip –display-off

    • sudo -E ./scripts/start_civ.sh -g GVT-d

Validation results

Celadon build has been validated on Intel NUC Kit NUC11PAQI7 in the following function domains:

Component

Results

Comments

Wi-Fi

OK

Host wifi is switched to Android UI in QEMU using usb pass through

BT

OK

Bluetooth is working

Audio Playback

OK

MP3, AAC-LC, AAC-ELD, HEAAC, HEAAC-V2, VORBIS, OPUS, FLAC, PCM/WAV formats supported

Adb connect over WIFI

OK

Adb connect over Ethernet

OK

Display /Touch and Gesture

OK

Security

OK

Boot

OK

Boots on QEMU 4.2.0

Ethernet

OK

Image Flash

OK

Web browsing

OK

Video playback

OK

H264/H265/MPEG2/VP8/VP9 Video Playback

USB

OK

Keyboard , Mouse , Pen drive

Reference configuration

  • Supported hardware

    • Product - NUC11PAQI7

  • Supported software

    • AOSP Version - android-11.0.0_r39

    • NUC11PAQI7 Host Kernel - -5.4.142-cvhb

    • NUC11PAQI7 Guest kernel - -5.4.142-cvhb

Acronyms and terms

  • CIV - Celadon in Virtual Machine

CIV_00.21.02.27_A11

  • This is a Pre-Production Binary Release for evaluation and development purposes and it cannot be used for production purposes. This release is supported on Intel NUC Kit NUC11PAQI7 Celadon in VM.

Intended audience

Customer support

Introduction

New in this release

  • New features

    • AAC-LC, AAC-ELD, HEAAC, HEAAC-V2, VORBIS, OPUS, FLAC, PCM/WAV formats

    • Power Management - Suspend/Resume

    • Local Video Playback with Widevine DRM - Level 3

    • External USB Camera

  • Existing features

    • This release uses start_civ.sh to launch Link -https://docs.01.org/celadon/getting-started/on-vm.html?highlight=start_civ#use-start-civ-sh

    • API Level 30 & FCM target Level 5

    • Other Changes that came as part of API level Up

      • AIDL for Power and Light HALs

      • Audio & Audio effects HAL 6.0

      • Health HAL 2.1

      • Boot HAL upgraded to 1.1

    • Upgraded Mainline modules

    • Soft restart

    • Updatable APEX

    • Config store HAL deprecated

    • Graphics Memory Allocator (Gralloc) 4.0

    • HWC 2.4 support for Display

    • Trusty Hardware Seed binding

    • Power Management - Suspend,Resume

    • Android* key Input Manager Framework is implemented for Power & Volume buttons

    • Integrated Sensor Hub Enablement for Android Supported Sensors

    • Android Thermal HAL and Thermal Manager Service

    • BZIP2 performance improvements

    • Bluetooth Control from Android in VM

    • HDMI Audio Output Support

    • Virtio-gpu Support

    • SDHCI mediation enabled and supported SD card

      • CIV launch script for SD Card: sudo -E ./scripts/start_android_qcow2.sh –sdonly

    • Graphics GVT-d support

    • HDMI and DP display support

    • Mass Storage USB 2.0 and 3.x devices is supported

    • Adb over WIFI and Ethernet is supported

    • Audio playback over USB Headset, 3.5mm and HDMI are supported

    • Setting Proxy for Wireless Network

    • Wi-Fi 802.11 a/b/g/n/ac/ax and Bluetooth 4.2

    • Ethernet works fine with Ethernet to USB converter

    • Wifi Control from Android in VM using usb passthrough

    • To passthrough USB host controller in NUC11PAQI7, run the CIV launch script like this: sudo E ./scripts/start_civ.sh -g GVT-d –passthrough-pci-usb

    • Power Management - Shutdown and Reboot

    • Android Time keeping with Host OS

    • Product Information to Guest OS

    • ODM partition for vendor customizations

    • Only logitech C922 pro stream webcam is supported for all camera related testing

    • HW Video Codecs support on celadon

      Decoder

      • AVC High profile @ Level 5.1 (4k@30fps)

      • HEVC Main and Main 10 profile @ Level 5 (4k@30fps)(Main 10 with BT2020 and ST2084 information is not supported)

      • VP9 profile 0 @ Level 5 (4k@30fps)

      • Vp8 8 bits 1080p@60fps

      Encoder

    • Audio decoders supported: MP3, AAC-LC, AAC-ELD, HEAAC, HEAAC-V2, VORBIS, OPUS, MIDI, FLAC, PCM/WAV

    • Generic storage HAL supported

    • SATA emulation is supported

    • 9pfs based file transfer

    • Security SELinux enforcing, Trusty TEE, File Based Encryption, Trusty, Keymaster 3.0

      • User guide:

        • SELinux Configuration and Rules

        • How to Enable or Disable Trusty for Debugging

  • Changes to existing features

  • Unsupported or discontinued features

Known issues

  • Android UI Flicker when booted with eDP Display

  • Blank screen is displayed while video playback [Configuration : GLrenderer-Virtio] & [GLrenderer-Softpipe]

  • Camera Preview Flickers while using MultiCamera application

Where to find the release

How to install this release

  • Steps to sync to this release

  • Android build commands

    • For Compilation please use Ubuntu 18.04

    • source build/envsetup.sh

    • lunch caas-userdebug

    • make flashfiles -jN

  • Steps To build the host kernel for this manifest

    • Download caas-releasefiles-userdebug.tar.gz and put it under ~/civ

    • cd ~/civ && tar zxvf caas-releasefiles-userdebug.tar.gz

    • cd patches/kernel/lts2019-chromium

    • ./build_weekly.sh

    • Deb files will be generated in patches/kernel/lts2019-chromium/host_kernel

    • sudo dpkg -i *.deb

    • Update grub to wait indefinitely for kernel selection on boot

      • sudo vim /etc/default/grub

      • Comment out GRUB_TIMEOUT_STYLE=hidden #GRUB_TIMEOUT_STYLE=hidden

      • Uncomment the following line and modify grub timeout to -1 for indefinite wait or 5 for 5secs wait #GRUB_TIMEOUT=-1

      • Save the file

      • sudo update-grub

    • sudo reboot

    • Select compiled kernel from “Advanced options for Ubuntu”

  • Flash and run steps

    • Download flash-files [https://github.com/projectceladon/celadon-binary]

    • Untar <flash-files>

    • sudo -E ./scripts/setup_host -u headless

    • sudo -E ./scripts/start_flash_usb.sh caas-flashfiles-eng.<user>.zip –display-off

    • sudo -E ./scripts/start_civ.sh -g GVT-d

Validation results

Celadon build has been validated on Intel NUC Kit NUC11PAQI7 in the following function domains:

Component

Results

Comments

Wi-Fi

OK

Host wifi is switched to Android UI in QEMU using usb pass through

BT

OK

Bluetooth is working

Audio Playback

OK

MP3, AAC-LC, AAC-ELD, HEAAC, HEAAC-V2, VORBIS, OPUS, FLAC, PCM/WAV formats supported

Adb connect over WIFI

OK

Adb connect over Ethernet

OK

Display /Touch and Gesture

OK

Security

OK

Boot

OK

Boots on QEMU 4.2.0

Ethernet

OK

Image Flash

OK

Web browsing

OK

Video playback

OK

H264/H265/MPEG2/VP8/VP9 Video Playback

USB

OK

Keyboard , Mouse , Pen drive

Reference configuration

  • Supported hardware

    • Product - NUC11PAQI7

  • Supported software

    • AOSP Version - android-11.0.0_r38

    • NUC11PAQI7 Host Kernel - -5.4.121-cvhb

    • NUC11PAQI7 Guest kernel - -5.4.121-cvhb

Acronyms and terms

  • CIV - Celadon in Virtual Machine

Helpful hints / related documents

CIV_00.21.02.25_A11

  • This is a Pre-Production Manifest Release for evaluation and development purposes and it cannot be used for production purposes. This release is supported on Intel NUC Kit NUC11PAQI7 Celadon in VM.

Intended audience

Customer support

Introduction

New in this release

  • New features

    • AAC-LC, AAC-ELD, HEAAC, HEAAC-V2, VORBIS, OPUS, FLAC, PCM/WAV formats

    • Power Management - Suspend/Resume

    • Local Video Playback with Widevine DRM - Level 3

    • External USB Camera

  • Existing features

    • This release uses start_civ.sh to launch Link -https://docs.01.org/celadon/getting-started/on-vm.html?highlight=start_civ#use-start-civ-sh

    • API Level 30 & FCM target Level 5

    • Other Changes that came as part of API level Up

      • AIDL for Power and Light HALs

      • Audio & Audio effects HAL 6.0

      • Health HAL 2.1

      • Boot HAL upgraded to 1.1

    • Upgraded Mainline modules

    • Soft restart

    • Updatable APEX

    • Config store HAL deprecated

    • Graphics Memory Allocator (Gralloc) 4.0

    • HWC 2.4 support for Display

    • Trusty Hardware Seed binding

    • Power Management - Suspend,Resume

    • Android key Input Manager Framework is implemented for Power and Volume buttons

    • Integrated Sensor Hub Enablement for Android Supported Sensors

    • Android Thermal HAL and Thermal Manager Service

    • BZIP2 performance improvements

    • Bluetooth Control from Android in VM

    • HDMI Audio Output Support

    • Virtio-gpu Support

    • SDHCI mediation enabled and supported SD card

      • CIV launch script for SD Card: sudo -E ./scripts/start_android_qcow2.sh –sdonly

    • Graphics GVT-d support

    • HDMI and DP display support

    • Mass Storage USB 2.0 and 3.x devices is supported

    • Adb over WIFI and Ethernet is supported

    • Audio playback over USB Headset, 3.5mm and HDMI are supported

    • Setting Proxy for Wireless Network

    • Wi-Fi 802.11 a/b/g/n/ac/ax and Bluetooth 4.2

    • Ethernet works fine with Ethernet to USB converter

    • Wifi Control from Android in VM using usb passthrough

    • To passthrough USB host controller in NUC11PAQI7, run the CIV launch script like this: sudo E ./scripts/start_civ.sh -g GVT-d –passthrough-pci-usb

    • Power Management - Shutdown and Reboot

    • Android Time keeping with Host OS

    • Product Information to Guest OS

    • ODM partition for vendor customizations

    • Only logitech C922 pro stream webcam is supported for all camera related testing

    • HW Video Codecs support on celadon

      Decoder

      • AVC High profile @ Level 5.1 (4k@30fps)

      • HEVC Main and Main 10 profile @ Level 5 (4k@30fps) (Main 10 with BT2020 and ST2084 information is not supported)

      • VP9 profile 0 @ Level 5 (4k@30fps)

      • Vp8 8 bits 1080p@60fps

      Encoder

    • Audio decoders supported: MP3, AAC-LC, AAC-ELD, HEAAC, HEAAC-V2, VORBIS, OPUS, MIDI, FLAC, PCM/WAV

    • Generic storage HAL supported

    • SATA emulation is supported

    • 9pfs based file transfer

    • Security SELinux enforcing, Trusty TEE, File Based Encryption, Trusty, Keymaster 3.0

      • User guide:

        • SELinux Configuration and Rules

        • How to Enable or Disable Trusty for Debugging

  • Changes to existing features

  • Unsupported or discontinued features

Known issues

  • Android UI Flicker when booted with eDP Display

  • Blank screen is displayed while video playback [Configuration : GLrenderer-Virtio] & [GLrenderer-Softpipe]

  • Camera Preview Flickers while using MultiCamera application

Where to find the release

How to install this release

  • Steps to sync to this release

  • Android build commands

    • For Compilation please use Ubuntu 18.04

    • source build/envsetup.sh

    • lunch caas-userdebug

    • make flashfiles -jN

  • Steps To build the host kernel for this manifest

    • Download caas-releasefiles-userdebug.tar.gz and put it under ~/civ

    • cd ~/civ && tar zxvf caas-releasefiles-userdebug.tar.gz

    • cd patches/kernel/lts2019-chromium

    • ./build_weekly.sh

    • Deb files will be generated in patches/kernel/lts2019-chromium/host_kernel

    • sudo dpkg -i *.deb

    • Update grub to wait indefinitely for kernel selection on boot

      • sudo vim /etc/default/grub

      • Comment out GRUB_TIMEOUT_STYLE=hidden #GRUB_TIMEOUT_STYLE=hidden

      • Uncomment following line and modify grub timeout to -1 for indefinite wait or 5 for 5secs wait #GRUB_TIMEOUT=-1

      • Save the file

      • sudo update-grub

    • sudo reboot

    • Select compiled kernel from “Advanced options for Ubuntu”

  • Flash and run steps

    • Download flash-files [https://github.com/projectceladon/celadon-binary]

    • Untar <flash-files>

    • sudo -E ./scripts/setup_host -u headless

    • sudo -E ./scripts/start_flash_usb.sh caas-flashfiles-eng.<user>.zip –display-off

    • sudo -E ./scripts/start_civ.sh -g GVT-d

Validation results

Celadon build has been validated on Intel NUC Kit NUC11PAQI7 in the following function domains:

Component

Results

Comments

Wi-Fi

OK

Host wifi is switched to Android UI in QEMU using usb pass through

BT

OK

Bluetooth is working

Audio Playback

OK

MP3, AAC-LC, AAC-ELD, HEAAC, HEAAC-V2, VORBIS, OPUS, FLAC, PCM/WAV formats supported

Adb connect over WIFI

OK

Adb connect over Ethernet

OK

Display /Touch and Gesture

OK

Security

OK

Boot

OK

Boots on QEMU 4.2.0

Ethernet

OK

Image Flash

OK

Web browsing

OK

Video playback

OK

H264/H265/MPEG2/VP8/VP9 Video Playback

USB

OK

Keyboard , Mouse , Pen drive

Reference configuration

  • Supported hardware

    • Product - NUC11PAQI7

  • Supported software

    • AOSP Version - android-11.0.0_r37

    • NUC11PAQI7 Host Kernel - -5.4.121-cvhb

    • NUC11PAQI7 Guest kernel - -5.4.121-cvhb

Acronyms and terms

  • CIV - Celadon in Virtual Machine

Helpful hints / Related documents

CIV_00.21.01.12_A11

  • This is a Pre-Production Release for evaluation and development purposes and it cannot be used for production purposes. This release is supported on Intel NUC Kit NUC11PAQI7 Celadon in VM.

New features

  • Supports Intel Core 11th Gen

  • ADB over DbC support

  • Widevine Ready for NUC11PAQI7

  • WFA Security- Enhanced Open (OWE) support

Existing Features

  • Other Changes that came as part of API level Up

    • AIDL for Power and Light HALs

    • Audio & Audio effects HAL 6.0

    • Health HAL 2.1

    • Boot HAL upgraded to 1.1

  • Upgraded Mainline modules

  • Soft restart

  • Updatable APEX

  • Config store HAL deprecated

  • Graphics Memory Allocator (Gralloc) 4.0

  • HWC 2.4 support for Display

  • Trusty Hardware Seed binding

  • Power Management - Suspend,Resume

  • Android key Input Manager Framework is implemented for Power and Volume buttons

  • Integrated Sensor Hub Enablement for Android Supported Sensors

  • Android Thermal HAL and Thermal Manager Service

  • BZIP2 performance improvements

  • Bluetooth Control from Android in VM

  • HDMI Audio Output Support

  • Virtio-gpu Support

  • SDHCI mediation enabled and supported SD card

    • CIV launch script for SD Card: sudo -E ./scripts/start_android_qcow2.sh –sdonly

  • Graphics GVT-d support

  • HDMI and DP display support

  • Mass Storage USB 2.0 and 3.x devices is supported

  • Adb over WIFI and Ethernet is supported

  • Audio playback over USB Headset, 3.5mm and HDMI are supported

  • Setting Proxy for Wireless Network

  • Wi-Fi 802.11 a/b/g/n/ac/ax and Bluetooth 4.2

  • Ethernet works fine with Ethernet to USB converter

  • Wifi Control from Android in VM using usb passthrough

  • To passthrough USB host controller in NUC11PAQI7, run the CIV launch script like this: sudo E ./scripts/start_civ.sh -g GVT-d –passthrough-pci-usb

  • Power Management - Shutdown and Reboot

  • Android Time keeping with Host OS

  • Product Information to Guest OS

  • ODM partition for vendor customizations

  • Only logitech C922 pro stream webcam is supported for all camera related testing

  • HW Video Codecs support on celadon

    Decoder

    • AVC High profile @ Level 5.1 (4k@30fps)

    • HEVC Main and Main 10 profile @ Level 5 (4k@30fps) (Main 10 with BT2020 and ST2084 information is not supported)

    • VP9 profile 0 @ Level 5 (4k@30fps)

    • Vp8 8 bits 1080p@60fps

    Encoder

  • Audio decoders supported: MP3, AAC-LC, AAC-ELD, HEAAC, HEAAC-V2, VORBIS, OPUS, MIDI, FLAC, PCM/WAV

  • Generic storage HAL supported

  • SATA emulation is supported

  • 9pfs based file transfer

  • Security SELinux enforcing, Trusty TEE, File Based Encryption, Trusty, Keymaster 3.0

    • User guide:

      • SELinux Configuration and Rules

      • How to Enable or Disable Trusty for Debugging

Important remarks

  • For CaaS-CIV

    • Recommended system requirements for Host

      • CPU: 4 cores or more

      • RAM: 4GB or more

      • Disk: 40GB or more

    • Recommended configuration for CPU cores & Memory allocated to Guest VM

      • CPU: [default 1 core]

      • RAM: [default 2GB]

Known issues

  • After recording the video in MultiCamera, it can be successfully played in MUltiCamera, but the playback in photos app fails

  • Android is not Booting UI after “adb reboot” when connected with eDP Display

  • Possible Buffer overflow with strncat in hcitools

  • Camera Preview Flickers

  • CFI failure seen during suspend/resume , This is merged on Latest HEAD

  • Android UI is flickering sometimes

  • Android UI doesn’t launch in Mosaic mode

  • Captured Photo shows Black in ImageView.[AOSP Camera]

  • ADB goes offline after performing adb root/remount operation , this issue is fixed on the latest HEAD

  • Direct LAN to NUC11PAQI7 ethernet port is not working in this release

  • Android UI Flicker when booted with eDP Display

Validation results

Celadon build has been validated on Intel NUC Kit NUC11PAQI7 in the following function domains:

Component

Results

Comments

Wi-Fi

OK

Host wifi is switched to Android UI in QEMU using usb pass through

BT

OK

Bluetooth is working

Audio Playback

OK

MP3, AAC-LC, AAC-ELD, HEAAC, HEAAC-V2, VORBIS, OPUS, FLAC, PCM/WAV formats supported

Adb connect over WIFI

OK

Adb connect over Ethernet

OK

Display /Touch and Gesture

OK

Security

OK

Boot

OK

Boots on QEMU 4.2.0

Ethernet

OK

Image Flash

OK

Web browsing

OK

Video playback

OK

H264/H265/MPEG2/VP8/VP9 Video Playback

USB

OK

Keyboard , Mouse , Pen drive

Tools/Configuration

  • QEMU Version 4.2.0

  • Host Ubuntu 20.04

  • Host Kernel Version 5.4.76 [Build kernel from the tar ball of this release -Steps Below under hints section]

  • Guest kernel 5.4.76