problem with iPhone and Samsung mobiles

"Adam Cécile (Le_Vert)" gandalf at le-vert.net
Wed Feb 18 10:17:43 EST 2009


Here is what I posted on this ML a few weeks ago (I haven't got any reply):

Hello,

Could you please help me to fix this issue ?
I just bought a Samsung Player Addict mobile phone which is running
Windows Mobile 6.1.
My gateway use an atheros miniPCI card with madwifi driver version
0.9.4+r3772.
I was using an old hostapd 0.5.10 from Debian and I just updated it to
0.6.6 (and used the good madwifi sources to build it).

The issue is still the same:
Sometimes connexion works for a few minutes, sometimes it can't connect
at all. After a while connexion gets broken.

Here is my config file:
interface=wlan
driver=madwifi
logger_syslog=-1
logger_syslog_level=2
logger_stdout=-1
logger_stdout_level=2
debug=0
dump_file=/tmp/hostapd.dump
ctrl_interface=/var/run/hostapd
ctrl_interface_group=0
ssid=LEVERT
hw_mode=g
channel=60
beacon_int=100
dtim_period=2
max_num_sta=255
rts_threshold=2347
fragm_threshold=2346
macaddr_acl=0
auth_algs=3
ignore_broadcast_ssid=0
wme_enabled=1
wme_ac_bk_cwmin=4
wme_ac_bk_cwmax=10
wme_ac_bk_aifs=7
wme_ac_bk_txop_limit=0
wme_ac_bk_acm=0
wme_ac_be_aifs=3
wme_ac_be_cwmin=4
wme_ac_be_cwmax=10
wme_ac_be_txop_limit=0
wme_ac_be_acm=0
wme_ac_vi_aifs=2
wme_ac_vi_cwmin=3
wme_ac_vi_cwmax=4
wme_ac_vi_txop_limit=94
wme_ac_vi_acm=0
wme_ac_vo_aifs=2
wme_ac_vo_cwmin=2
wme_ac_vo_cwmax=3
wme_ac_vo_txop_limit=47
wme_ac_vo_acm=0
eapol_key_index_workaround=0
eap_server=0
own_ip_addr=127.0.0.1
wpa=1
wpa_passphrase=mykey
wpa_key_mgmt=WPA-PSK
wpa_pairwise=TKIP CCMP

A full hostapd debug log is available here:
http://woippy.le-vert.net/divers/log.hostapd

Thanks a lot in advance,

Regards, Adam.


Jouni Malinen a écrit :
> On Wed, Feb 18, 2009 at 01:41:14PM +0100, Tamas Selmeci wrote:
>
>   
>> But there are problems: two mobile phones fail to surf the net. These 
>> phones are Samsung i780 and Apple iPhone.
>>     
>
>   
>> All the hostapd logging facilities are on (I'm watching the syslog). 
>> Have been tried with compat-ath9k-20090125 and compat-ath9k-20090211, 
>> nothing changed. Similarly, Atheros 5416 and 9160 behaved the same.
>>     
>
> I don't have either Samsung i780 or iPhone, but I would expect that iPod
> Touch has very similar wlan implementation with iPhone, so I should be
> able to test this with that. I'm mostly using AR9280, but I would expect
> the issue be more likely in power save mode processing and mac80211.
> Anyway, I can also test with AR5416 if no problems show up with the
> newer AR9280.
>
>   
>> Do you have any idea what could be wrong? Why is there problems with 
>> iPhone and Samsung i780? I was unable to figure out. Both phone receive 
>> the correct DNS, gateway and IP data. If my DNS server or DHCP server 
>> would be wrong then how could other devices work seamlessly?
>>     
>
> Quite a few mobile devices have shown odd issues with power save mode in
> general, so that would be my first assumption on what could be causing
> problems here. Usually this means that using a wireless sniffer to
> capture the frames is more or less the first thing to do.. If you can do
> that, it could speed up figuring out what is happening. Like I
> mentioned, I should able to do this with iPod Touch, but if there is any
> different behavior in iPhone or Samsung i780, I don't have an easy way
> to reproduce it myself.
>
>   



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