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My Content
8 Apr 2018
Interesting keyboard Mod. The howto is for Android but can be done also for other platforms.

Source : https://egg.5ch.net/test/read.cgi/notepc/1520308917/750

Google Translate :
Changing the key mapping on Android
Because it is a file rewrite in the / system partition, you need root privilege as a prerequisite.
There is a definition file in / system / usr / keylayout and / system / usr / keychars.
If you simply replace the key, rewrite the keylayout and restart it OK.
In my case, because I want to replace ". ↑, ← ↓" in the bottom two columns with US array, I need to create the following 5 lines of Generic.kl

key 51 COMMA
key 52 PERIOD
key 103 DPAD_UP
key 105 DPAD_LEFT
key 108 DPAD_DOWN

Rewrite as follows.

key 51 DPAD_LEFT
key 52 COMMA
key 103 PERIOD
key 105 DPAD_DOWN
key 108 DPAD_UP

It will become such an arrangement if restarted. comfortable.

I do not have it so I do not know what the definition file of the Japanese keyboard is.
IME on / off code should be different for IME.
In Droid 4 + ATOK, it assigns GRAVE and switches with one SYM key.
Since Gemini does not have a good key, I plan to go with the default Alt + Space.


5 Mar 2018
There has been some confusion around why the serial number is shown as 0123456789ABCDEF on all devices.

This issue was reported on the Indigogo comments section and on a Japanese twitter post and BBS comments.

Example: https://twitter.com/komecha/status/970512034742677504

The serial number is set at boot via a kernel parameter: androidboot.serialno=0123456789ABCDEF on all devices.

A real serial number should be found on the back (inside) of the Gemini as shown in this picture: (top sticker)


It is unclear if this can be corrected, but maybe Planet Computers can address this minor issue via an software update in the future. (?)

27 Feb 2018
Hi all,

we are very excited to hear about the announcement made by Jolla and Planet Computers at MWC 2018 to officially support Sailfish OS 3 on the Gemini PDA!

For the curious, here are more details : https://jolla.com/wp-content/uploads/2018/0...t_Computers.pdf

Not familiar with Sailfish OS ? No worries, have a look at these sites: https://sailfishos.org/ & https://en.wikipedia.org/wiki/Sailfish_OS

In regards to the current Sailfish OS support for the Gemini PDA: There are still quite a few questions unanswered & some hurdles need to be overcome to make it a smooth experience. The current Sailfish OS port seems to be preliminary, according some reports. https://www.engadget.com/2018/02/26/gemini-...jolla-hands-on/ . (This report contains a mistake, stating the Gemini PDA will feature 6GB of RAM, so take it with a grain of salt)

Nevertheless, we very much welcome the collaboration between Jolla and Plant Computers! This really feels like a good start and looks very promising! We hope to hear more from Planet Computers and Jolla in the near future in regards to Sailfish OS 3.

Are you an OpenSource Enthusiast ? Please understand that Sailfish OS does rely in some cases on closed source drivers and blobs, same as Android, but most of the UI and base are actually opensource.

Note: Please use this forum section for any Sailfish OS related questions or topics!


26 Feb 2018

if anyone has a Zaurus JTAG cable floating around and is willing to donate it, please let me know. I would cover shipping costs if needed.

The original is the Sharp CE-170TS cable.

There are some on Ebay, with hefty shipping costs...but before I opt to one of these as my last resort, I thought I better ask.

Your support would be very welcome


10 Feb 2018
Experimental Kernel for Sharp Zaurus C3x00 series

Download Link : Linux 4.14.18-c3x00-r0

Kernel 4.14.18

- boot.cfg only an example for use with kexecboot.
You will need to adjust your root= accordingly

- This in an experimental release!

-r0 Change Log

- Add support for SanDisk 8GB CF Card

- Set USB power level to 180mA (not sure this actually works)

- Reverted PCMCIA regulator additions by using soc_common.c/h to 4.6.7 version

- SPI fix included ( backlight: tdo24m: fix the spi cs between transfers )

- F2FS support (You will need kexecboot with F2FS support)
See this link for supported kexecboot kernels : https://github.com/greguu/linux-3.10.y-c3x0...xec-r0/releases

- Online charging may work again. This needs some testing.
Re-plug the power cord after a boot brings the charging LED on

Known Issues:

- The left SHIFT key on the keyboard does not work with several keys. Use the right SHIFT key instead if you come across the issue.
This has been fixed. You need to re-download the release from github and update the kernel zImage file on /boot only. Same if you downloaded the rootfs tar ball.

C1000 Users :

- This kernel may work with your Akita (C1000). For C1000 support, please see this post for more details : C1000/Akita support

Installation Instructions:

- Extract the zImage file to your /boot folder
- Extract the modules to /lib/modules
- Edit your /boot/boot.cfg accordingly !(A dual boot setup alongside the previous working kernel is recommended)
- Reboot and choose the new kernel at the kexecboot menu.

Example boot.cfg for internal CF card (F2FS):

APPEND=root=/dev/sda1 rootfstype=f2fs fbcon=rotate:1 noinitrd loglevel=3

APPEND=root=/dev/sda1 rootfstype=f2fs fbcon=rotate:1 noinitrd loglevel=7 debug

Example boot.cfg for external SD card (EXT4):

APPEND=root=/dev/mmcblk0p1 rootfstype=ext4 fbcon=rotate:1 noinitrd loglevel=3

APPEND=root=/dev/mmcblk0p1 rootfstype=ext4 fbcon=rotate:1 noinitrd loglevel=7 debug

Have fun ! Please provide feedback and report any kernel related issues in this thread.

An updated Arch Linux ARM RootFS, including kernel 4.14.18 has been released.


Screens anyone ?
Boot Process
In Action


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