ctrl_interface=DIR=/data/system/
wpa_supplicant GROUP=system
update_config=1
ap_scan=2
network={
ssid="xperia"
scan_ssid=1
key_mgmt=NONE
mode=1
}

hi fssid
our x10 not support ad hoc wifi network
so here are some tricks to connect to our laptop wifi to use internet.


here you are:
!) well at first you need to create an ad-hoc(any name you can use for it, my ad-hoc name is xperia)
2) then sharing your internet on it!!
3) trun on your x10s wifi.
4) create a network on your x10 with the same name!!!(add Wi-Fi network)
5) turn off x10s wifi
6) go to data/misc/wif/


after you open wpa_supplicant.conf


you should see this text:


ctrl_interface=DIR=/data/system/
wpa_supplicant GROUP=system
update_config=1


network={
ssid="xperia"
scan_ssid=1
key_mgmt=NONE
}


change it like this:


ctrl_interface=DIR=/data/system/
wpa_supplicant GROUP=system
update_config=1
ap_scan=2
network={
ssid="xperia"
scan_ssid=1
key_mgmt=NONE
mode=1
}


dont forget the backup!!


if ur on android 2.1
than u will see wifi instead of system in wpa_supplicant Group=wifi..leave it as it is..just add some line as above..

ctrl_interface=DIR=/data/system/
wpa_supplicant GROUP=wifi
update_config=1
Note: ssid is the name you give to your adhoc connection, in my case it is simply called xperia.
Save & Exit, and turn on wifi. It should connect to your adhoc connection. Works like a charm; however, I noticed the added lines can sometimes vanish by themselves, no idea about that.