Public bug reported:

Something odd that I have only seen in Ubuntu, Debian, and derivatives
thereof affects something that most of us use every day, and can be a
real hassle to beginners from what I've noticed: Many USB WiFi drivers
will connect to an access point like usual and after long periods of
inactivity on the network combined with user inactivity on the PC alone
is when this problem appears to arise: The WiFi disconnects and does not
connect again to the same hotspot using the same USB WiFi dongle unless
the computer is restarted or reset, and a lot of the time, that doesn't
immediately stop this error and even if so, the computer will disconnect
yet again not too long from then.

And why does this happen? It puzzles me. Maybe it's the USB chipset
inside the WiFi dongle, or maybe it's a communication error between the
Linux kernel and the automated firewall systems integrated in most
routers and base stations today, it's hard to say. What I know is that
this doesn't just happen on my computer, testing done by myself on
several other computers in different locations using different WiFi
hardware on Ubuntu, Debian, Linux Mint, or derivatives thereof gets the
exact same result as I am experiencing now.

I have gone digging through Debian, Ubuntu, and Linux Mint forums to try
and find the "cure" patch for my computer or router and the answer as to
why this is happening, and the best answer I could find is that within
my system's WiFi Settings, I need to set the BSSID of the hotspot I am
current using as the MAC address of the router which that hotspot is
transmitting.

Upon setting my BSSID to a clone of the Router's MAC address followed by
a system restart, I noticed instant improvement when it comes to
connection reliability, speed, and time to connect, yet after days of
having that MAC as the BSSID, things went back to the usual chaos of an
unreliable connection that no other device within the household has
encountered, not even Android telephones and tablets that use much of
the same underlying Linux code. I performed restarts, updates, more
updates, resets, and even more derivatives of Debian or Ubuntu and this
is still more of an issue than ever.

Via further digging and through a process of trial-and-error, I enabled
the "IPv4 is required for this connection" check box along with changing
the BSSID to a clone of the router's MAC address in hopes it was a
compatibility issue with the "newer" IPv6 Internet Protocol architecture
in an attempt to basically 'force' the machine to get that digital
handshake with the router in a more 'legacy' mode with IPv4, at least to
get some connection. That worked for a bit as well, but didn't hold up
just like before.

I am now sitting here at my computer, still experiencing this issue on
and off, currently having the issue stabilized and stalled at the moment
with the "IPv4 is required for this connection" check box on, NO BSSID
set, NO cloned MAC address, and NO "Restrict to Device" settings opted-
in, hoping this time around this combination of settings will work, but
it's a game of trial-and-error for me at this point now, like mentioned
before.

Has anyone else experienced such terrible connectivity issues only in
Debian-based distributions recently? I have been using Linux for ages
now and I feel as if this issue is now just arising within the past
year, 2014.

A HardInfo report generated from my computer is attached to this bug
report. I hope we can figure out a solution soon to get pushed to all
Debian and Debian-like distros soon! Nobody wants a bad connection.


Current OS: Linux Mint 17 "Qiana"
Kernel: Linux 3.13.0-24-generic (x86_64)
Processor: AMD Phenom II X4 (850)
RAM: 8GB DDR3

IWLIST OUTPUT:
jeb@MINT-PARTITION:~ > sudo iwlist wlan0 scan
[sudo] password for jeb: 
wlan0     Scan completed :
          Cell 01 - Address: F8:7B:8C:06:57:8D
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Quality=60/70  Signal level=-50 dBm  
                    Encryption key:on
                    ESSID:"Belkin-EXT"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s
                    Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=0000000597f8a929
                    Extra: Last beacon: 72ms ago
                    IE: Unknown: 000A42656C6B696E2D455854
                    IE: Unknown: 010882848B960C121824
                    IE: Unknown: 030106
                    IE: Unknown: 2A0100
                    IE: Unknown: 32043048606C
                    IE: Unknown: 
2D1AEE191EFFFF000000000000000000000000000000000000000000
                    IE: Unknown: 
3D1606000000000000000000000000000000000000000000
                    IE: Unknown: 4A0E14000A00B400C800140005001900
                    IE: Unknown: 7F0101
                    IE: WPA Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 
DD180050F2020101000003A4000027A4000042435E0062322F00
                    IE: Unknown: 
DD1E00904C33EE191EFFFF000000000000000000000000000000000000000000
                    IE: Unknown: 
DD1A00904C3406000000000000000000000000000000000000000000
                    IE: Unknown: DD0600E04C0201E0
                    IE: Unknown: 
DD9E0050F204104A0001101044000102103B0001031047001063041253101920061228F87B8C06578D1021001B5265616C74656B2053656D69636F6E647563746F7220436F72702E1023000752544C387878781024000D45562D323030392D30322D30361042000F3132333435363738393031323334371054000800060050F2040001101100135265616C74656B20576972656C657373204150100800020086
          Cell 02 - Address: 08:86:3B:26:59:50
                    Channel:2
                    Frequency:2.417 GHz (Channel 2)
                    Quality=36/70  Signal level=-74 dBm  
                    Encryption key:on
                    ESSID:"belkin.950"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 9 Mb/s
                              18 Mb/s; 36 Mb/s; 54 Mb/s
                    Bit Rates:6 Mb/s; 12 Mb/s; 24 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=0000002395603d46
                    Extra: Last beacon: 72ms ago
                    IE: Unknown: 000A62656C6B696E2E393530
                    IE: Unknown: 010882848B961224486C
                    IE: Unknown: 030102
                    IE: Unknown: 2A0104
                    IE: Unknown: 32040C183060
                    IE: Unknown: 
2D1AEE1117FFFFFF00010000000000000000000000000C1846471100
                    IE: Unknown: 
3D1602050000000000000000000000000000000000000000
                    IE: Unknown: 3E0100
                    IE: WPA Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 
DD180050F2020101000003A4000027A4000042435E0062322F00
                    IE: Unknown: 0B0500000B127A
                    IE: Unknown: 4A0E14000A002C01C800140005001900
                    IE: Unknown: 7F0101
                    IE: Unknown: DD07000C4307000000
                    IE: Unknown: 
DDB10050F204104A0001101044000102103B000103104700102880288028801880A88008863B2659501021001442656C6B696E20496E7465726E6174696F6E616C1023001B42656C6B696E204E34353020576972656C65737320526F757465721024000746394B313030331042000E31323334353647383930313233341054000800060050F20400011011001B42656C6B696E204E34353020576972656C65737320526F75746572100800020084103C000101
          Cell 03 - Address: 00:7F:28:2E:0F:84
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Quality=38/70  Signal level=-72 dBm  
                    Encryption key:on
                    ESSID:"KCS96"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s
                    Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=00000001058f7d22
                    Extra: Last beacon: 72ms ago
                    IE: Unknown: 00054B43533936
                    IE: Unknown: 010882848B960C121824
                    IE: Unknown: 030106
                    IE: Unknown: 200100
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 2A0100
                    IE: Unknown: 32043048606C
                    IE: Unknown: 
DD180050F2020101040003A4000027A4000042435E0062322F00
                    IE: Unknown: 
2D1A8C131BFFFF000000000000000000000000000000000000000000
                    IE: Unknown: 
3D1606080800000000000000000000000000000000000000
                    IE: Unknown: DD0900037F01010000FF7F
                    IE: Unknown: DD0A00037F04010000000000
                    IE: Unknown: 0706555320010B1B

jeb@MINT-PARTITION:~ >

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: wireless-tools 30~pre9-8ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.5
Architecture: amd64
CurrentDesktop: KDE
Date: Fri Oct 31 17:55:56 2014
Dependencies:
 gcc-4.9-base 4.9.1-0ubuntu1
 libc6 2.19-0ubuntu6.3
 libgcc1 1:4.9.1-0ubuntu1
 libiw30 30~pre9-8ubuntu1
 multiarch-support 2.19-0ubuntu6.3
InstallationDate: Installed on 2014-10-23 (8 days ago)
InstallationMedia: Linux Mint 17 "Qiana" - Release amd64 20140619
SourcePackage: wireless-tools
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: broadcom-sta
     Importance: Undecided
         Status: New

** Affects: linux
     Importance: Undecided
         Status: New

** Affects: linuxmint
     Importance: Undecided
         Status: Confirmed

** Affects: mint-control-center-xfce
     Importance: Undecided
         Status: New

** Affects: unity
     Importance: Undecided
         Status: New

** Affects: wireless-drivers
     Importance: Undecided
         Status: Confirmed

** Affects: wireless-tools
     Importance: Undecided
         Status: New

** Affects: wireless-tools (Ubuntu)
     Importance: Undecided
         Status: Confirmed


** Tags: amd64 apport-bug internet intranet lts qiana trusty wifi wireless

** Attachment added: "HardInfo Report from October 31st, 2014."
   
https://bugs.launchpad.net/bugs/1388278/+attachment/4250341/+files/hardinfo_report_OCTOBER31.2014.html

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https://bugs.launchpad.net/bugs/1388278

Title:
  WiFi randomly disconnects and won't connect again

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