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Old 11-11-2004, 10:43 PM   #1
sal_paradise42
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Thumbs down wireless on Linux dying when I bring another wireless device in the LAN


I have a Linux box in my laundry room with no mouse,keyboard or monitor the only way for me to get to it is ssh (not even X installed), I depend on this box a great deal, is running Apache, Samba, Proftpd, Bind, and MySQL. The problem started when I got my new IBOOK with MAC OS X with a wireless G integrated card in it, when I bring the MAC in the LAN the Linux box connectivity goes down, I can't even ping it I have to do a cold reboot (no monitor and all). This does not happen when I'm away and I have the IBOOK with me, is just when I bring it in, I can connect to it for like 10 minutes and then it goes down. The Wireless card is Texas instruments compiled with this module acx100 (it was a pain to get it done, but it has worked until now) this is the start up script for it
ESSID="any" # THIS IS CASE SeNsItIvE!! any == associate to any ESSID
# Default rate configured as 11Mbps to not cause connection problems with non-22Mbps hardware...
RATE=11M
AUTORATE=1
CHAN=6 # it's useful to try to stick to channels 1, 6 or 11 only, since these don't overlap with oth
er channels
SHORTPREAMBLE=1 #set a value of 1 in order to use "Short Preamble" (incompatible with very old WLAN
hardware!)
#TXPOWER=18 # 0..20 (dBm) (18dBm is firmware default) overly large setting might perhaps destroy you
r radio eventually!
MODE=Auto # Auto == auto-select Managed or Ad-Hoc depending on environment
DEBUG=0xb
KEY="XXXXXXXXXXXXXXXXXXXXXX" # WEP128
#KEY0="1234567890" #WEP64
#KEY1="1234567890"
#KEY2="1234567890"
#KEY3="1234567890"
ALG=open # open == Open System, restricted == Shared Key

USE_DHCP=0 # set to 1 for auto configuration instead of fixed IP setting
IP=192.168.1.106
NETMASK=255.255.255.0
GATEWAY=192.168.1.101

This is what my logs tell me
Nov 11 19:53:20 webmonster kernel: several excessive Tx retry errors occurred, attempting to recalibrate the radio!! This radio drift *might* be due to increasing card temperature, so you may want to verify proper card temperature, since recalibration might delay card over-temperature failure until it's too late (final fatal card damage). Just a (over?)cautious warning...

and this is what iwconfig tells me
[root@webmonster root]# iwconfig
lo no wireless extensions.

sit0 no wireless extensions.

Warning: Driver for device wlan0 has been compiled with version 16
of Wireless Extension, while this program is using version 15.
Some things may be broken...

wlan0 IEEE 802.11b+ ESSIDff/any Nickname:"acx100 v0.2.0pre8"
Mode:Auto Channel:6 Access Point: 00:0C:41:B7:70:94
Bit Rate:11Mb/s Tx-Power:18 dBm Sensitivity=187/0
Retry min limit:7 RTS thrff
Encryption key:XXXXXXXXXXXXXXXXXX Encryption modepen
Power Managementff
Link Quality:89/0 Signal level:-168 dBm Noise level:-255 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:1 Invalid misc:0 Missed beacon:0




but it works fine when the MAC OS X is not around !!!!
is it my wireless router, MAC OS X, or Linux? and what can I do to fix this

thanks
 
Old 11-11-2004, 11:05 PM   #2
linux_terror
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ip conflict?
 
Old 11-11-2004, 11:29 PM   #3
sal_paradise42
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no ipconflict

apple 192.1.168.110
Linux_server 192.168.1.106
Linux_router 192.168.1.101
Windows_xp 192.168.1.122
 
Old 11-11-2004, 11:43 PM   #4
n0xvb
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Registered: Sep 2004
Location: 127.0.0.1
Distribution: Slackware 13; openSUSE 11.2
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Could your Mac be trying to run in AP mode also? Try setting the ESSID on the linux box to match your existing AP. Since it is set to any it may be getting confused once it sees the Mac.
 
Old 11-13-2004, 12:58 AM   #5
sal_paradise42
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I tried that, it seemed pretty valid but its still happening.
I noticed that everthing stays the same(ip_configuration,routing table) I can't even tell is down until I try to ping
anybody seen this???
 
Old 11-14-2004, 04:38 AM   #6
n0xvb
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No I've not seen this, sorry that didn't help. Only other thing I can possibly think of is the wireless signal dropping low enough to lose the connection, but I don't know if that downs your interface as well.
 
  


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