Jump to content

nikolaos1969

  • Content Count

    102
  • Joined

  • Last visited

  • Country

    Greece

About nikolaos1969

  • Rank
    Sophomore Member

Personal Information

  • Location
    Greece, Athens

Recent Profile Visitors

626 profile views

Bookmarks

  1. How is the Pi 4?
    How is the Pi 4?

    Now we could add JCAT USB Card XE thanks to the PCIe 2.0 x1 slot on the I/O board

     

    https://www.cnx-software.com/2020/10/19/raspberry-pi-cm4-cm4lite-modules/

     


  2. How is the Pi 4?
    How is the Pi 4?

    (Make sure that we're connecting Pi 4 to a reliable power source before the update is applied, and then it must be done with the official Raspberry Pi OS available @ https://downloads.raspberrypi.org/raspios_lite_armhf/images/raspios_lite_armhf-2020-08-24/2020-08-20-raspios-buster-armhf-lite.zip . There's no need to keep that micro SD card afterwards.)

     


     

    How to Boot Raspberry Pi 4 From a USB SSD or Flash Drive

    https://www.tomshardware.com/how-to/boot-raspberry-pi-4-usb

    https://www.reddit.com/r/raspberry_pi/comments/hwzzs7/question_regarding_disabling_power_for_the_rpi4bs/

    Quote

    uhubctl does work to completely disable USB power on RPi4B. Make sure you update VL805 firmware to latest version (00137ad), and use latest uhubctl (version 2.2.0).

     

    FYI - piCorePlayer mentioned above already included uhubctl version 2.2.0

     

    https://www.my-hiend.com/vbb/showthread.php?13157-piCorePlayer6-1-0-Xenomai-44-1-48KHz雙機入門簡易安裝教學

    https://archive.is/dQAY2

    https://archive.is/eYcRa

    https://archive.is/7B2P7

     

    cLEE8aB.jpg

    3JYAZZt.jpg

     

    Let's say USB drive is plugged into P1 and USB DAC / DDC is connected to P4 respectively, therefore P2 could be powered off right away

     

    sudo /home/tc/uhubctl -l2 -p2 -a0

     

    Same deal with P3

     

    sudo /home/tc/uhubctl -l2 -p3 -a0

     

    Finally we'll wait for a few minutes before powering off P1 while leaving P4 alone

     

    sleep 300;sudo /home/tc/uhubctl -l2 -p1 -a0

     

    Everything could be combined together as shown below

     

    sudo /home/tc/uhubctl -l2 -p2 -a0;sudo /home/tc/uhubctl -l2 -p3 -a0;sleep 300;sudo /home/tc/uhubctl -l2 -p1 -a0

     

    Squeezelite itself doesn't need to write anything back to the USB drive, therefore nothing will share the same bus with the USB DAC when 3 outta 4 USB ports are powered off.

     

    LMS itself doesn't run completely off RAM since the database is located at the USB drive, that's why I linked to a guide for running two units of Pi 4 separately with two different piCorePlayer images. (Support for TIDAL was removed from that specific image for LMS.)

     

    BTW, here's the link to get uhubctl for other distros

     

    https://github.com/mvp/uhubctl


×
×
  • Create New...