Raspberry Pi Troubleshooting List

This is a place to store notes and tips when I run into troubleshooting issues on the Raspberry Pi.

Wireless Issues:

  1. If using a USB wi-fi dongle that has the Ralink RT5370 ** chip. I have been experiencing lost signals and shutoff after using for short and long periods of time. This dongle has a power management feature that is causing issues. From the command line on Pi type iwconfig . Do you see an entry for Wlan0 that mentions power management: on  ?
    Hop into your interfaces file at the command line using

    sudo nano /etc/network/interfaces

    Add the following line. wireless-power off in the file. Exit and reboot.
    There is a good forum discussion on the topic here. http://www.raspberrypi.org/forums/viewtopic.php?f=28&t=40474#p330868

  2. If you’ve made a change to /etc/network/interfaces you can restart networking with the command:
    sudo /etc/init.d/networking restart

RaspBian Package Updates & Reinstalls:

  1. Clear your package cache :
    sudo apt-get clean
  2. If you know the name of the package and want to remove it:
    sudo apt-get --purge remove packagename
  3. Install and use the Synaptic Package Manager:
    sudo apt-get install synaptic

    Then=>

    sudo synaptic
  4. Distribution upgrade command: sudo apt-get dist-upgrade
  5. Remove unneeded packages, fix broken installs, update package list, upgrade installed packages).
    sudo apt-get autoremove && sudo apt-get -f install && sudo apt-get update && sudo apt-get upgrade -y
  6. List all packages installed

     

    dpkg-query -l

     

    List packages using a search pattern

     

    It is possible to add a search pattern to list packages:

    dpkg-query -l 'foo*'

     

    Show status of all packages on the system

     

    To check the status of all packages on your system:

    dpkg -l | more

     

    This will show all packages (1 line each) that are in various stages of install (this includes packages that were removed but not purged). To show only the installed:

    dpkg -l | grep '^i'

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