Samsung Galaxy Note II (samsung-n7100)

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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-n7100
Released 2012
Category testing
Original software Android 4.1.1 on Linux 3.0.31
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
Features
USB Networking
Works
Flashing
Works
Touchscreen
Works
Display
Works
WiFi
Xwayland
FDE
Mainline
Battery
3D Acceleration
Accelerometer
Audio
Bluetooth
Camera
GPS
Mobile data
SMS
Calls
USB OTG


Contributors

  • Bloo

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 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