Google Nexus 10 (samsung-manta)

Contributors

 * BakaOsaka
 * MartijnBraam
 * Blacksilver

How to enter flash mode

 * Connect a USB cable
 * Power the device off
 * Hold power + volume down
 * You should get a bootloader screen saying "Downloading... Do not turn off target !!"

Installation
See Installation guide. If this doesn't work, try Android Recovery Zip Installation.

In either case, the  partition isn't big enough for all but the smallest interfaces. So if you install anything bigger, use  or , depending on which way you install it, to choose a bigger partition. should have more than enough space.

Reverting back to stock / recreating broken partitions
Because postmarketOS uses partitions differently than android, reverting back to stock is a bit more complicated. These instructions should work in any situation, except if you managed to break the bootloader or physically damaged your device.


 * Have fastboot installed
 * Download and unzip the correct factory image. In most cases you'll probably want the latest one (LMY49J).
 * Open a terminal and navigate into the folder you just unzipped.
 * Connect your Nexus 10 via USB, and boot to bootloader (hold power+vol_up+vol_down until you see a screen that says bootloader)
 * On Linux/Mac:  On Windows:
 * The script will reflash the stock bootloader/recovery/system, wait for it to finish. Once it is done, the tablet will reboot and attempt to boot into android. Because some partitions are still broken, this means that it will be stuck at the android splash screen (if you chose the latest version, it's some colored dots flying around) indefinitely.
 * To solve this, boot to bootloader again (hold power+vol_up+vol_down), use the volume buttons to choose  and select it by tapping the power button.
 * After a short while, you should be at a mostly black screen, with a small android and a red triangle. To get to the actual recovery menu, tap the volume_up button while holding power.
 * Now choose, then  , and once it is finished, choose.
 * Wait until it shows you the first time setup screen for android, and everything should be fixed :)

Power
By default the device will drain its battery even if it is connected to your PC because USB does only provide ~100mA. This can be changed with:

If you want to use a standalone charger, the following commands have to be issued after you plugged in the charger:

Issue the following command to monitor the power consumption:

A positive current value means that the battery is charging while a negative current discharges the battery.

Touchscreen
After booting the UI doesn't react to user input. Restarting lightdm solves this:

Black screen after postmarketOS splash screen
For some unknown reason, most interfaces only show a black screen after booting. If you have your device connected via USB, you can execute  over ssh. Somehow, this seems to fix it, at least temporarily (plasma-desktop just goes back to showing a black screen after login).

Xfce4 tweaks
Increasing DPI from the default 96 (settings / appearance / fonts / DPI) by a factor of 2 (or more, actual screen DPI is 300) makes the desktop reasonably stylus accessible. The interface issues discussed above remain:
 * black screen -.
 * Possibly related to  info message in Xorg.log?
 * - manual intervention.
 * - becomes unresponsive after being idle for a few minutes. use   trick.

Photos

 * Nexus-10-weston.jpg


 * Screenshot-nexus-10-xfce4-dpi192-about-pwr.jpg


 * Screenshot-nexus-10-xfce4-dpi192-term.jpg

Mainline
The Exynos 5250 has support in the mainline kernel, so this tablet might be a good candidate.

There are even few 5250 devices which are pretty well supported by mainline kernel. The smdk5250 board is close to manta.

Volunteers to work on a manta dtb ?

Links

 * Original pull request
 * Touchscreen pull request
 * Wifi Audio pull request