All, Hello I am new to the list and apologize if I am breaking etiquette, I've been searching on google for days to solve this annoying problem but maybe I just haven't hit upon the right search terms yes. I'm hoping you can help because you probably know more about these wireless cards than anyone else, even the manufacturers.
Anyway, my problem is this. My card is recognized, ath9k is loaded as kernel module and the machine successfully obtains an IP-Address lease from the DHCP server, all without problem. My machine (varie) has full connectivity to the local subnet and to the beyond (internet). The issue is when other machines attempt to connect to it. When I try to ping my machine (varie) from another machine (tessa) on the same subnet, usually I get the "Destination Host Unreachable" error. If, on the other hand, varie has recently (say within 1 minute) ping-ed tessa, then tessa is able to find a route to varie and the ping is successful. The issue is compounded by the fact that occasionally persistent TCP connections into varie are dropped, whereas outbound persistent connections are never dropped. If, for example, I have an ssh session established from varie to tessa, the connection will never drop. On the other hand, if tessa initiated the connection to varie, that connection will almost certainly die at some point while I am using it. Okay, hopefully that explains the issue well enough, now for some details: Model: Acer Revo (NVIDIA ION based) OS: Ubuntu 9.04 Module: ath9k r...@varie:~# lsmod | grep ath ath9k 263352 0 mac80211 217592 1 ath9k led_class 12036 1 ath9k I tried following the instructions on how to debug, but I guess my ath9k module was not compiled with debug support, as there is no ath9k entry in /sys/kernel/debug/. There are, however, some interesting entries under /sys/kernel/debug/ieee80211/phy0/: r...@varie:~# ls -la /sys/kernel/debug/ieee80211/phy0/ total 0 drwxr-xr-x 7 root root 0 2009-08-10 23:33 . drwxr-xr-x 3 root root 0 2009-08-10 23:33 .. -r-------- 1 root root 0 2009-08-10 23:33 antenna_sel_rx -r-------- 1 root root 0 2009-08-10 23:33 antenna_sel_tx -r-------- 1 root root 0 2009-08-10 23:33 fragmentation_threshold -r-------- 1 root root 0 2009-08-10 23:33 frequency drwxr-xr-x 3 root root 0 2009-08-10 23:33 keys -r-------- 1 root root 0 2009-08-10 23:33 long_retry_limit drwxr-xr-x 2 root root 0 2009-08-10 23:33 netdev:wlan0 drwxr-xr-x 2 root root 0 2009-08-10 23:33 rc -r-------- 1 root root 0 2009-08-10 23:33 rts_threshold -r-------- 1 root root 0 2009-08-10 23:33 short_retry_limit drwxr-xr-x 3 root root 0 2009-08-10 23:33 stations drwxr-xr-x 2 root root 0 2009-08-10 23:33 statistics -r-------- 1 root root 0 2009-08-10 23:33 total_ps_buffered -r-------- 1 root root 0 2009-08-10 23:33 wep_iv This is interesting to me because it's obviously wireless connectivity related, but there is no mention of ath9k anywhere. I am new to this voodoo land, so please go easy on me. Any help would be appreciated, as long as it doesn't tell me to check firewall settings. Believe me, I have been through iptables/tcpwrappers hell before, this is unlike any networking issue I've ever seen. It's not a security thing, it's something much lower level. That's why I'm talking to you. Thanks for any help or redirection, Regards, Patrick
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