Raspberry Pi WiFi issue

The Problem

My Raspberry Pi disconnected from WiFi randomly.

The Analysis

• This seems to have started with the last apt-get upgrade
• Dis- and reconnecting the WiFi-Stick didn't solve it
• Rebooting didn't, too

After some digging, I found:

• http://www.raspberrypi.org/forums/viewtopic.php?f=91&t=58963
• http://www.raspberrypi.org/forums/viewtopic.php?uid=41983&f=28&t=23544&start=0
• http://www.raspberrypi.org/forums/viewtopic.php?f=28&t=25854

The Solution

root@tomatomat:/home/pi# apt-get install rpi-update
Reading package lists… Done
[…]
Setting up rpi-update (20140321) ...
root@tomatomat:/home/pi# rpi-update
*** Raspberry Pi firmware updater by Hexxeh, enhanced by AndrewS
*** Performing self-update
[…]
*** Syncing changes to disk
*** If no errors appeared, your firmware was successfully updated to d9eb023ba98317d81fc53a3f9d6752b127a8dbbf
*** A reboot is needed to activate the new firmware
root@tomatomat:/home/pi# shutdown -r now

NOTE: THE PROBLEM REAPPEARED 3 YEARS LATER! SEE: Raspberry Pi WiFi issue (Solarcam)

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• Footnotes: