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Samsung Galaxy Note II (samsung-t03g): Difference between revisions

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| manufacturer = Samsung
| manufacturer = Samsung
| name = Galaxy Note II
| name = Galaxy Note II
| codename = samsung-n7100
| codename = samsung-t03g
| image = File:Samsung Galaxy Note II.png
| image = File:Samsung Galaxy Note II.png
| imagecaption = Samsung Galaxy Note II
| imagecaption = Samsung Galaxy Note II

Revision as of 05:38, 17 April 2022

Note This device is still running on armhf, although the processor supports armv7. If you own it, change it and test it that way.
Samsung Galaxy Note II
Samsung Galaxy Note II
Samsung Galaxy Note II
Manufacturer Samsung
Name Galaxy Note II
Codename samsung-t03g
Released 2012
Hardware
Chipset Exynos 4412 Quad
CPU Quad-core 1.6 GHz Cortex-A9
GPU Mali-400 MP4
Display 720x1280 AMOLED
Storage 16/32/64 GB
Memory 2 GB
Architecture armv7
Software
Original software Android 4.1.1 on Linux 3.0.31
postmarketOS
Category testing
Pre-built images no
Mainline yes
Features
Flashing
Works
USB Networking
Works
Internal storage
No data
SD card
No data
Battery
No data
Screen
Works
Touchscreen
Works
Multimedia
3D Acceleration
Works
Audio
No data
Camera
No data
Camera Flash
No data
Connectivity
WiFi
No data
Bluetooth
No data
GPS
No data
NFC
No data
Modem
Calls
No data
SMS
No data
Mobile data
No data
Miscellaneous
FDE
No data
USB OTG
No data
HDMI/DP
No data
Sensors
Accelerometer
No data
Magnetometer
No data
Ambient Light
No data
Proximity
No data
Hall Effect
No data
Haptics
No data
Barometer
No data

Contributors

  • Bloo

Users owning this device


Basic info

What works

  • Compiling the kernel
  • Flashing with Heimdall
  • Booting initramfs
  • SSH
  • Touch screen fully calibrated

What does not work

  • Sound
  • Weston

Not tested

  • WiFi (needs kernel modules compiling first)

How to enter flash mode

Press and hold "volume down + home + power" simultaneously. Then click volume up to confirm.

Installing system

The device package and kernel is now available, pre-built, from the repositories.

You can install the OS to an SD card or your system partition. I've only tried an SD card:

$ pmbootstrap install --sdcard=/dev/sdb

You will need a 1GB SD card in order for this to work, also keep in mind that this will format the sd card.

Please also note, that you cannot flash directly to the system due to an error in Heimdall.

Next you want to put your phone in download mode by holding power + vol down + home all together until you enter download mode, press volume up again to continue past the warning.

Now you can flash the boot image:

$ pmbootstrap flasher flash_kernel

We're using flash_kernel because the N7100 packages its kernel and initfs file into one boot image, where as some other phones have separate partitions for each unlike the N7100.

If everything checks out OK, your N7100 should reboot and you should see the Samsung logo. Dont worry if the screen is flashing on and off and its taking a while, after a minute or 2 it should show up the pmOS splash!

Getting the S Pen to work

To get the S Pen working, you might have to do the following:

  • Write the following into /etc/udev/hwdb.d/60-evdev.hwdb:
$ sudo cat /etc/udev/hwdb.d/60-evdev.hwdb
evdev:name:*e-pen*
 EVDEV_ABS_00=::300
 EVDEV_ABS_01=::300

(Note: The file's contents should be improved)

  • Possibly: update the hwdb
$ sudo udevadm hwdb --update
  • Restart the phone

Issues

  • Weston does not run, presumably because of missing API calls. This should be fixed once the device runs mainline.
  • The kernel seems to have a bug which causes it to reboot a large number of times. It will eventually be able to boot properly though. ([1])

Mainline U-Boot

According to this blog there is a working U-Boot port on the N7100 (and some others). Build from this repository, U-Boot works successfully with SD-card. Unfortunately my device instance has dead eMMC memory so I can't test U-Boot with eMMC.

Mainline Kernel

Thanks in large part to the Midas on Mainline work that was done a few years ago, we now have initial mainline support for this device. The pmOS patch that added initial support is here.

The pmports repo for this device's linux-postmarketos-exynos4 mainline kernel is here.

There is a downstream patch to create a necessary exynos4412-n7100 specific DTS for this device in the mainline kernel, as opposed to the current more generic exynos4412-n710x DTS, but it has yet to be submitted upstream. Please feel free to submit this patch on behalf of the author if you are willing and able.

The Replicant project is interested in further mainlining this device and replacing the bootloader with u-boot and would like to collaborate with us [2].

This device's Qualcomm Gobi MDM9615 Modem has limited mainline kernel support: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/drivers/clk/qcom/gcc-mdm9615.c?h=v5.2.7