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      Raspberry Pi 2 with gentoo linux

      Gentoo Linux for Raspberry PI 2 Raw Disk Image Download

      The Raspberry Pi 2 Model B is a quad-core arm 900 MHz 32bit core based single board computer for experimenting with programming languages and hardware control. It has got 1G DDR2 RAM, HDMI, 4 USB 2.0 ports, 100 Mbit Lan, MicroSD card slot, a 40 pin GPIO and power from miniusb. Completely compatible with rpi. Python is a good choice to use with the RPI. And (also) for GUIs PyQt library (in QT Designer) is recommended. The code must not be compiled and runs on almost any machines ...

      targets: [install/download] [modules] [hw/sf lists] [display link / dual monitors / usb vga adapter / xrandr] [set usb snd default] [rpi projects] [openbox theme] [accelerated x driver]


    • this hardware is successfully running on a Rpi2:



    • Storage option:

      Install notes ...

      building your own linux
      https://github.com/raspberrypi/firmware (sys-boot/raspberrypi-firmware)
      
       root # cd /tmp/
       root # git clone --depth 1 git://github.com/raspberrypi/firmware/
       root # cd firmware/boot
       root # cp -r * /mnt/gentoo/boot/
       root # cp -r ../modules /mnt/gentoo/lib/ 


      https://wiki.gentoo.org/wiki/Raspberry_Pi
      https://wiki.gentoo.org/wiki/Raspberry_Pi/Quick_Install_Guide
      https://wiki.gentoo.org/wiki/LXDE < this takes about 1 day (compiling with all dependencies) ~550MB

      after installing base system and desktop is about 3,4 G

      Kernel Modules

    • this modules must be loaded when using hardware listed on top in:/etc/conf.d/modules
    • :
      
       #load the modules in the right order (depends)
       modules="bcm2708-rng"
       modules="bcm2808-rng"
       modules="bcm2835_rng"
       modules="bluetooth"
       modules="snd"
       modules="snd-timer"
       modules="snd-pcm"
       modules="snd-card-sb8"
       modules="btusb"
       modules="8192cu"
       modules="8712u"
       modules="cfg80211"
       modules="snd-usb-audio"
       modules="snd-bcm2835"
       modules="i2c-bcm2708"
       modules="i2c-dev"
       modules="cifs"
       modules="udl"
       modules="udlfb"
       #modprobe snd_bmc2835 manually - if does not load ># modprobe --show-depends snd_bcm2835
       #cifs and snd-bcm2835 does not load
       #basename -s ".ko" $(find /lib/modules/$(uname -r) -type f -name "*.ko")
       

      after preparing the sd card and installing kernel and modules (like this)-

      save building time: use my gentoo!

      Raspbian packages are outdated, so here is my alternative:
      a image of my clean (german) linux can be downloaded
      here ~3,4 G 2017-01-22
      checksum: 4075a1514561cb9e56590b4340aad540 (Kernel 4.4.44, including 1GB swap partition) : it can be expand with more software that is available in portage. The source files are still included if you want to re-emerge with new USEFLAGS (/etc/portage/make.conf). Remove unused disfiles with
    • eclean-dist
    • .
      Make sure your card is larger than 16GB (min. use 16gb microsd uhs-1 class 10 (rpi2 can not write faster than 25mb/s) is about 7€ > this is optimal )
      >load kernel modules I have payed attention that you can start with python immediately (it is integral in gentoo).
      gunzip -c gentoo.img.gz | sudo dd of=/dev/sdX
       # X is your disk
       #this will erase all data!
       #note: you can check partition table of extracted image with #fdisk -l gentoo.img
       #mount boot partition eg (512 x startsector):#mount -o loop,ro,offset=1048576 gentoo.img /mnt/iso 
       # after this insert microsd, boot pi2, login (w. standard user and pwd like in raspbian / pi:raspberry)
       # and expand filesystem:
       sudo resize2fs /dev/mmcblk0p3
        

      Login Screen:

      .. it comes with:

      used hardware :lshw installed software :world desktop modifications :lxdemod
      Sorry, but there is no flash plugin available for arm, yet ...
      Have fun with this lightweight ram saving out-of-the-box solution on your RPI2!

      set usb soundcard default (
    • /etc/modprobe.d/alsa.conf
    • )
      
       options snd-usb-audio index=0
       options snd-bcm2835 index=1
       # and also comment this lines  
       #options snd-pcsp index=-2
       #options snd-usb-audio index=-2
       #reboot !
       speaker-test -c 2 -l 3 -D sysdefault:CARD=0
       


      Display link, dual monitors with usb vga adapter and xrandr

      >click here to read more<
      >linuxweb obenbox theme download <
      Look & Feel:


      It should be enough to update system with:
      emerge --sync
       emerge --ask -uDU --with-bdeps=y @world --keep-going


      Feedback Wanted!! >here< or in forum on raspberrypi.org
      to do: dual boot(usb), memtest
      my publication post on raspberrypi.org

      other rpi projects

      Retropie (emulation station)
      Noobs (Raspbian)
      OpenElec (Mediacenter) (with Amazon TV support)
      Rpi Compute Modul
      RPI Cluster Beowulf
      Adafruit 16x2 LCD
      Vielen Dank an Christian Roch fr das Bild vom grnen Baumpython und an Oc2k1 der mir Linux nher gebracht hat!

      - 21744 Chars - 963 Wörter , Views: 97899
      Bewerten:           Rating:3.12

      letzte Aktualisierung 2022-07-05 01:46:35 von admin

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