Re: [Acx100-devel] acx-mac80211-20070610 has problems

[Stefan H. <lis...@th...>]

Jeff Williams schrieb:
> 
> On Thu, 19 Jul 2007, Stefan Hellermann wrote:
> 
>> Sorry, haven't searched for eventually existing files there, thought you would
>> post them in the mailing-list.
> 
> Ok, sorry.
> 
>> The new patch is not much better, I think it lasts longer until get stuck, but
>> happens after a few minutes. Dmesg says I should check the card's temperature,
>> but it's okay!
> 
> That's left over from the non-mac80211 version. It's more likely that 
> we're having TKIP(WEP) issues.
> 
>> Also one time I got a kernel-crash, but can't collect information about it.
>>
>> here the last dmesg-lines:
>>
>> wlan3: TKIP decrypt failed for RX frame from 00:15:e9:5f:71:e3 (res=-2)
>> wlan3: TKIP decrypt failed for RX frame from 00:15:e9:5f:71:e3 (res=-2)
>> wlan3: TKIP decrypt failed for RX frame from 00:15:e9:5f:71:e3 (res=-2)
>> wlan3: TKIP decrypt failed for RX frame from 00:15:e9:5f:71:e3 (res=-3)
>> wlan3: TKIP decrypt failed for RX frame from 00:15:e9:5f:71:e3 (res=-1)
>> wlan3: TKIP decrypt failed for RX frame from 00:15:e9:5f:71:e3 (res=-3)
>> wlan3: TKIP decrypt failed for RX frame from 00:15:e9:5f:71:e3 (res=-3)
> 
> Out of curiousity, is 00:15:e9:5f:71:e3 the AP you are connected to?
> 

Yes, it is.

> Is the connection stalling when you don't encrypt? Are you able to 
> successfully move data with the TKIP on? Can I get an 'iwlist sc', an 
> 'iwconfig' and a complete 'dmesg'? Oh and your wpa_supplicant.conf file 
> (without password of course)
> 

Okay, I've done more testing, with WPA-encryption and unencrypted.

First my idea was to copy files over the connection to test it, but NFS and 
CIFS had any problems with server does not response, so I used a 
XDMCP-Connection (remote-X) and watched a video over it.(It looked more like a 
dia-show, the wlan-connection is to slow for 800x600 uncompressed video)
With this workload I get about 11-13MBit load on the connection, with NFS a 
really short time up to 26MBit, but then the connection get stuck.

It works a time with WPA-encryption, despite of the encryption-failed 
messages.  But after a time (beetween 30s and 10m) the connection get stuck 
with no new dmesg-output.

It also works a time without encryption, the dmesg-output is different, and 
the time is longer as with WPA, sometimes 3m, one time about an hour.(Tested 
both about 5 times). This time there is dmesg-output, see attached files.

In unencrypted mode I also tried to reconnect to the AP with an ifdown+ifup, 
but then the acx-mac80211 crashed and many obscure things happend, but I could 
save dmesg, then I tried to rmmod acx-mac80211 and the machine freezed hard.

I've much output, so I've attached some files.

The firmware I used: 1.2.0.30 (from a USR-Driver for windows which works 
almost ok, the D-Link Driver is unusable but has firmware 2.?.?.?)

One thing: I don't know if the AP works reliable, some times I think it 
crashed (only while testing, with an atheros-based wlan-card it works fine for 
many month). The AP is about 3ft away from my notebook, the signal-strength 
should be 100%.
The AP is an D-Link DWL-2000AP+, it's a recommend one for use with my D-Link 
DWL-G650+.


> Thanks,
> Jeff
> 

Thanks
Stefan