Wifi Ad Hoc network problem

[betete]

Hello guys, probably I'm not the first to write about this problem, but I have already read most of the posts and I haven't found the answer.

I have a desktop PC, running Ubuntu 8.04 connected to ADSL Ethernet Modem to access internet, which is working. The PC also has a Realtek 8185 wifi pci card. I loaded the Windows driver using ndiswraper and had no problem, the card is working.

I also have a laptop running Windows XP, with wifi access. It works perfectly well.

I tried to establish and Ad Hoc network in order to share the internet connection between the PC and the Laptop. I followed all the steps in:
https://help.ubuntu.com/community/Wi...hroughWireless

I can see the network from my laptop, and I can even connect, but once it gets connected I cannot ping to the Ubuntu machine and of course I have no internet access.

The wired thing is that I've been trying for a couple of days and this morning I made it work. I connected both machines, the laptop could ping the desktop machine and the pc could ping the laptop, and I also had internet access on my laptop. I also try mounting some folders from my laptop and it worked.

The problem came when I restarted the desktop PC. Again, I went back to the beginning. I can see the network from my laptop and I can connect, but once it connects I try to ping from one to the other and nothing happens.

Here is the result of ifconfig
eth0 Link encap:Ethernet direcciónHW 00:13:d4:79:e0:64
ARRIBA DIFUSIÓN MULTICAST MTU:1500 Métrica:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
colisiones:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Interrupción:20

eth1 Link encap:Ethernet direcciónHW 00:08:54:28:73:60
dirección inet6: fe80::208:54ff:fe28:7360/64 Alcance:Vínculo
ARRIBA DIFUSIÓN CORRIENDO MULTICAST MTU:1500 Métrica:1
RX packets:6871 errors:0 dropped:0 overruns:0 frame:0
TX packets:7194 errors:0 dropped:0 overruns:0 carrier:0
colisiones:0 txqueuelen:1000
RX bytes:4578634 (4.3 MB) TX bytes:986997 (963.8 KB)
Interrupción:21 Dirección base: 0xd400

eth0:avahi Link encap:Ethernet direcciónHW 00:13:d4:79:e0:64
inet dirección:169.254.8.155 Difusión:169.254.255.255 Máscara:255.255.0.0
ARRIBA DIFUSIÓN MULTICAST MTU:1500 Métrica:1
Interrupción:20

eth1:avahi Link encap:Ethernet direcciónHW 00:08:54:28:73:60
inet dirección:169.254.4.213 Difusión:169.254.255.255 Máscara:255.255.0.0
ARRIBA DIFUSIÓN CORRIENDO MULTICAST MTU:1500 Métrica:1
Interrupción:21 Dirección base: 0xd400

lo Link encap:Bucle local
inet dirección:127.0.0.1 Máscara:255.0.0.0
dirección inet6: ::1/128 Alcance:Anfitrión
ARRIBA LOOPBACK CORRIENDO MTU:16436 Métrica:1
RX packets:1725 errors:0 dropped:0 overruns:0 frame:0
TX packets:1725 errors:0 dropped:0 overruns:0 carrier:0
colisiones:0 txqueuelen:0
RX bytes:85204 (83.2 KB) TX bytes:85204 (83.2 KB)

ppp0 Link encaprotocolo punto a punto
inet dirección:190.179.210.142 P-t-P:200.63.148.77 Máscara:255.255.255.255
ARRIBA PUNTO A PUNTO CORRIENDO NOARP MULTICAST MTU:1492 Métrica:1
RX packets:4103 errors:0 dropped:0 overruns:0 frame:0
TX packets:4150 errors:0 dropped:0 overruns:0 carrier:0
colisiones:0 txqueuelen:3
RX bytes:3051487 (2.9 MB) TX bytes:477529 (466.3 KB)

wlan0 Link encap:Ethernet direcciónHW 00:e0:4c:f1:4c:d4
inet dirección:192.168.0.1 Difusión:192.168.0.255 Máscara:255.255.255.0
ARRIBA DIFUSIÓN MULTICAST MTU:1500 Métrica:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:2 errors:0 dropped:0 overruns:0 carrier:0
colisiones:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:168 (168.0 B)
Interrupción:19 Memoria:efefb800-efefb825

And here it is the result of iwconfig
lo no wireless extensions.

eth0 no wireless extensions.

eth1 no wireless extensions.

wlan0 IEEE 802.11g ESSID:"'Ubuntu'"
Mode:Ad-Hoc Frequency:2.412 GHz Cell: 02:E0:B3:16:32:00
Bit Rate=11 Mb/s Tx-Power:46 dBm Sensitivity=0/3
RTS thrff Fragment thrff
Power Managementff
Link Quality:0 Signal level:0 Noise level:0
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0

ppp0 no wireless extensions.


Please, can you help me.

[betete]

IT'S WORKING.

I don't know why, but it's working now. I have internet access on my laptop, again.

The only thing I did was to uninstall firestarter. Could that be the problem? The last time it worked firestarter whas running.

Does anyone have an idea of what should I look in order to see what's different now that the network is working?

I don't know if next time I boot, it will still be working.

Thank you.

[betete]

Here I am again. I think I know what the problem is. I think that Ubuntu doesn't "connect" actually to the ad hoc network. Does anyone know if connection is established automatically with ifup? Or there is another way of connectiong?