sudo is a program for Unix-like computer operating systems that allows users to run programs/commands with the security privileges of another user, normally the superuser or root. Not all the users can call sudo, only the sudoers, architech user is a sudoer. When you run a command preceeded by sudo Linux will ask you the user password, for architech user the password is architech.
Pengwyn Board can be powered directly from the USB connector, the power consumption is about 250mA without any option installed. When powered from USB, the board can supply enough current to a USB keyboard (or a USB mouse) and to the DVI interface. If you want to connect something more power hungry to the USB port, we suggest you to power the board with an external power supply or to use externally powered USB devices.
Please, refer to:
The simplest reason could be that the SD card is write protected or locked, please double check that.
Commercially licensed recipes are disabled by default. Your conf/local.conf file, contained in your build directory (by default is /home/architech/architech_sdk/architech/pengwyn/yocto/build/), has a (commented) line starting with:
# LICENSE_FLAGS_WHITELIST
uncomment it (delete # symbol).
For the details, please refer to the official Yocto Project documentation.
~$ mkdir -p /home/architech/Documents/linux-kernel
~$ cd /home/architech/Documents/linux-kernel
~/Documents/linux-kernel$ cp /home/architech/architech_sdk/architech/pengwyn/yocto/poky/meta-silica/recipes-kernel/linux/linux-pengwyn-3.2/linux-pengwyn* .
~/Documents/linux-kernel$ tar -xzf linux-pengwyn_3.2.tar.gz
~/Documents/linux-kernel$ patch -p1 -d linux-pengwyn_3.2 < linux-pengwyn_3.2.patch
patching file ...
~/Documents/linux-kernel$ cd linux-pengwyn_3.2/drivers
In this directory there are all kernel linux drivers.
make menuconfig
Once opened go in Device Drivers.
If you have already built the kernel before modify it, you need purge all file objects. To do this use the following command:
make ARCH=arm mrproper
will cleanup totally the sources. See How to customize the Linux Kernel for details.
Open your .pro project file and add a new line under QT += core gui:
QT += webkit
If yuor company uses proxy then read this page to configure correctly yocto: Working Behind a Network Proxy.
Please, refer to How to update the repository in the vm