[Madwifi-users] Extensive packet loss on

[Ankur K. <an...@da...>]

Hey all,

I'm not seeing any errors on my WinXP laptop, but on my Linux machine
with the MadWifi driver I'm seeing the following "RX packets:15395
errors:28670" (this is an indication of my receive packet error ratio).
Hence my speeds are really slow. Any ideas what could be causing this?
I'm using the latest CVS code as of the 25th of March. My card is a
Netgear WG311 running on Debian with the 2.6.3-ck1 kernel.

Can I provide any more info to help identify the problem? I'm fine with
getting my hands dirty.

-- 
     _  _____________________________  _
    / )|                             |( \
   / / |        Ankur Kotwal         | \ \
_( (_ |    an...@da...    | _) )_
(((\ \>|_/->_____________________<-\_|</ /)))
(\\\\ \_/ /                       \ \_/ ////)
\       /                         \       /
  \    _/                           \_    /
  /   /                               \   \
/___/                                 \___\




James Bryan wrote:

>Michael,
>I've noticed the same packet loss too, on a IBM 802.11 a/b/g wireless
>mini-pci card. not sure if it's a setting or what, since there's very
>little packet loss in XP.
>
>James
>
>On Wed, 2004-03-17 at 10:11, Michael Reiher wrote:
>  
>
>>Hi!
>>
>>I recently bought a Netgear WG311 PCI WLAN adapter in order to setup an access 
>>point for my local network. I compiled and set up the madwifi driver, 
>>actually without problems. For testing purpose I have a Centrino notebook 
>>currently running Windows XP. The Laptop finds my access point, and I can 
>>even ping form one machine to the other. Didn't think it would be that 
>>easy!:) So good, so far. 
>>
>>The problem now is, that when I ping from the access point(with madwifi 
>>driver) to the notebook I have a packet loss of about 80%. Now the 
>>interessting thing is, that there is no paket loss at all when pinging the 
>>other way round i.e. from the notebook to the access point. So I suspect it 
>>to be a driver issue. I searched the net and the list archives but couldn't 
>>find anything that would help. Now I'm kinda clueless what to do next. Does 
>>anyone have a hint what I could do to track down the problem?
>>
>>The driver is CVS from yesterday. Oh, the notebook stands more or less right 
>>beside the access point and it show an "Excellent" signal strength.
>>
>>Here are a few outputs. Is there anything suspicious?
>>
>>dmesg:
>>
>>wlan: 0.7.3.1 BETA
>>ath_hal: 0.9.8.6
>>ath_pci: 0.8.5.4 BETA
>>ath0: mac 5.6 phy 4.1 5ghz radio 1.7 2ghz radio 2.3
>>ath0: 11b rates: 1Mbps 2Mbps 5.5Mbps 11Mbps
>>ath0: 11g rates: 1Mbps 2Mbps 5.5Mbps 11Mbps 6Mbps 9Mbps 12Mbps 18Mbps 24Mbps 
>>36Mbps 48Mbps 54Mbps
>>ath0: 802.11 address: 00:09:5b:96:e8:47
>>ath0: Atheros 5212: mem=0xed000000, irq=10
>>
>>iwconfig ath0:
>>
>>ath0      IEEE 802.11b  ESSID:"myaccess"
>>          Mode:Master  Frequency:2.412GHz  Access Point: 00:09:5B:96:E8:47
>>          Bit Rate:0kb/s   Tx-Power:50 dBm   Sensitivity=0/3
>>          Retry:off   RTS thr:off   Fragment thr:off
>>          Encryption key:off
>>          Power Management:off
>>          Link Quality:0/94  Signal level:-95 dBm  Noise level:-95 dBm
>>          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
>>          Tx excessive retries:0  Invalid misc:0   Missed beacon:0
>>
>>ifconfig ath0:
>>
>>ath0      Protokoll:Ethernet  Hardware Adresse 00:09:5B:96:E8:47
>>          inet Adresse:192.168.2.1  Bcast:192.168.2.255  Maske:255.255.255.0
>>          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>>          RX packets:1723 errors:12 dropped:0 overruns:0 frame:12
>>          TX packets:167 errors:33 dropped:0 overruns:0 carrier:0
>>          Kollisionen:0
>>          RX bytes:99075 (96.7 KiB)  TX bytes:18592 (18.1 KiB)
>>
>>
>>Every time a ping packet gets through ./athstats 1 shows a line like:
>>
>>input   output altrate   short    long xretry crcerr  crypt  phyerr rssi rate
>> 1946      387      39       0     735     84     12      0    3099   26   0M
>>
>>
>>I'd be glad for any help!
>>
>>Greets 
>>
>>Michael
>>
>>
>>
>>-------------------------------------------------------
>>This SF.Net email is sponsored by: IBM Linux Tutorials
>>Free Linux tutorial presented by Daniel Robbins, President and CEO of
>>GenToo technologies. Learn everything from fundamentals to system
>>administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click
>>_______________________________________________
>>Madwifi-users mailing list
>>Mad...@li...
>>https://lists.sourceforge.net/lists/listinfo/madwifi-users
>>    
>>