R&D mode

2011-05-07T18:03:43Z

83.117.208.157:

You can enable R&D mode by passing the <code>--enable-rd-mode</code> flag to the [[Documentation/Maemo 5 Developer Guide/Development Environment/Maemo Flasher-3.5|flasher]].

Note: This flag does not need to be passed to the EMMC image if you are flashing that as well.

You must use a Linux or a Mac OS X computer to enable R&D Mode, as the Windows update wizard will not allow you to enable/disable R&D Mode. Although, the Windows flasher will disable R&D Mode if you use it to reflash a device that has R&D Mode already enabled.

To switch back to production mode, use <code>--disable-rd-mode</code>.

== What R&D mode does ==

*<code>sudo gainroot</code> in the console can be used, without installing anything [[root access|extra]], to gain a root shell.

*The power button turns on the tablet with a shortpress press as opposed to the longpress normally required.

*[[Nokia N900|N900]]: The keyboard backlight behind the left and right side of the keyboard flickers in response to system activity.

== R&D mode flags ==

You can enable some R&D mode flags (<code>flasher-3.5 --set-rd-flags=''<flag>''</code>) for various features:

*<code>no-lifeguard-reset</code> - Disables the lifeguard process (lifeguard reboots the device when an important system process crashes).
*<code>serial-console</code> - Enables the serial console (the serial port pins are next to the battery) and causes a shorter battery life.
*<code>no-omap-wd</code> - Disables the watchdog on the OMAP processor.
*<code>no-retu-wd</code> - Disables the watchdog on retu.
*<code>no-usb-timeout</code> - Unknown
*<code>no-charging</code> - Disables charging via the USB port. bme will still be running in the background.

[[Category:Power users]]

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R&D mode