[!] Found packet with bad FCS, skipping... I read all issues related to this problem

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0. What version of Reaver are you using?  (Only defects against the latest
version will be considered.)
Reaver v1.4 WiFi. Build today from source code

1. What operating system are you using (Linux is the only supported OS)?
Linux host 2.6.32-29-generic #58-Ubuntu SMP Fri Feb 11 20:52:10 UTC 2011 x86_64 
GNU/Linux

2. Is your wireless card in monitor mode (yes/no)?
yes

3. What is the signal strength of the Access Point you are trying to crack?
100%

4. What is the manufacturer and model # of the device you are trying to
crack?
Asus WL520g

5. What is the entire command line string you are supplying to reaver?
reaver -i mon0 -b MAC_OF_ACCESS_POINT -vv

6. Please describe what you think the issue is.
Reaver should to start brute pins, but nothing.

7. Paste the output from Reaver below.

Reaver v1.4 WiFi Protected Setup Attack Tool
Copyright (c) 2011, Tactical Network Solutions, Craig Heffner 
<cheffner@tacnetsol.com>

[+] Waiting for beacon from MAC_OF_ACCESS_POINT
[+] Switching mon0 to channel 1
[+] Associated with MAC_OF_ACCESS_POINT (ESSID: Wpstest)

-- additional info --
And nothing (i waited about ~30 min). I'm using Linksys WUSB54GC v1 adapter 
(Ralink RT73). When i start wash:
ash -i mon0

Wash v1.4 WiFi Protected Setup Scan Tool
Copyright (c) 2011, Tactical Network Solutions, Craig Heffner 
<cheffner@tacnetsol.com>

BSSID                  Channel       RSSI       WPS Version       WPS Locked    
    ESSID
--------------------------------------------------------------------------------
-------------------------------
[!] Found packet with bad FCS, skipping...
[!] Found packet with bad FCS, skipping...
[!] Found packet with bad FCS, skipping...
[!] Found packet with bad FCS, skipping...

And no one SSID in log.
I try to start wash with -C option (--ignore-fcs)
wash -i mon0 -C

Wash v1.4 WiFi Protected Setup Scan Tool
Copyright (c) 2011, Tactical Network Solutions, Craig Heffner 
<cheffner@tacnetsol.com>

BSSID                  Channel       RSSI       WPS Version       WPS Locked    
    ESSID
--------------------------------------------------------------------------------
-------------------------------

And nothing (waiting about ~40 mins)

airodump-ng works
$ airodump-ng -i mon0
And I can see my wifi point
 CH  1 ][ Elapsed: 32 s ][ 2013-01-31 16:36                                         

 BSSID              PWR  Beacons    #Data, #/s  CH  MB   ENC  CIPHER AUTH ESSID                                                                                                                                                             

 MAC_OF_ACCESS_POINT  -57        7        3    0   1  54   WPA2 CCMP   PSK  Wpstest                                                                                                                                                          

 BSSID              STATION            PWR   Rate    Lost  Packets  Probes                                                                                                                                                                  

 (not associated)   00:21:29:5F:40:05    0    0 - 1      0       11                                                                                                                                                                          
 (not associated)   20:54:76:93:F6:76  -71    0 - 1      0        2                 

I try te reboot and/or plug/unplug wifi card. But nothing.
Any advices?

Thanks,
Sergey

Original issue reported on code.google.com by SergeyBeLove on 31 Jan 2013 at 9:38

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i have  the same promplem..with my alfa awus036h..Linux bt 3.2.6 #1 SMP Fri Feb 
17 10:40:05 EST 2012 i686 GNU/Linux
...reaver 1.4..any help plz?

Original comment by darklordpaunik8880 on 8 Feb 2013 at 10:15

[GoogleCodeExporter]

Same: root@muffinsecurity:~# wash -i mon0
Wash v1.4 WiFi Protected Setup Scan Tool
Copyright (c) 2011, Tactical Network Solutions, Craig Heffner 
<cheffner@tacnetsol.com>

BSSID                  Channel       RSSI       WPS Version       WPS Locked    
    ESSID
--------------------------------------------------------------------------------
-------------------------------
[!] Found packet with bad FCS, skipping...
[!] Found packet with bad FCS, skipping...
[!] Found packet with bad FCS, skipping...
[!] Found packet with bad FCS, skipping...
[!] Found packet with bad FCS, skipping...
[!] Found packet with bad FCS, skipping...
[!] Found packet with bad FCS, skipping...
[!] Found packet with bad FCS, skipping...
[!] Found packet with bad FCS, skipping...
[!] Found packet with bad FCS, skipping...
[!] Found packet with bad FCS, skipping...
And it goes on till I Ctrl-C it.

Original comment by ktwagne...@gmail.com on 7 Apr 2013 at 1:43

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try 'wash -i mon0 -C'

works for me. cards a alfa AWUS036NEH

Original comment by roamingn...@gmail.com on 17 Apr 2013 at 4:32

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works for me too!!!
tks

Original comment by javierho...@gmail.com on 29 Jun 2013 at 9:27

[GoogleCodeExporter]

To avoid the Found packet with bad FCS, skiping...

Try running: wash -i mon0 --ignore-fcs

Works for me, but sometimes it doesnt list all the APs available so i need do 
specify -c or -b . If the AP is still NOT listed, means WPS attack is not 
possible.

Hope this helps someone.

Original comment by Troikaop...@gmail.com on 24 Sep 2013 at 4:50

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hey guys.......I wana crack a wpa which starts with alphabets......actually im 
unable to do it.....signal quality is excellent......please help...

Original comment by atrocks...@gmail.com on 5 Mar 2014 at 12:07

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wash -i mon0 --ignore-fcs

Original comment by katawu...@entronica.co.th on 30 Jun 2015 at 3:35

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hey guys i tried all the ways you have said but it didn't work an still says 
found packet with bad FCS, skipping.... and my router is TP-Link WN722N and 
--ignore-fcs didn't work too i will be glad too have your advices

Original comment by yaserMO...@gmail.com on 3 Jul 2015 at 1:30