Newsgroup: it.comp.os.linux.iniziare
Titolo: Problema di connessione WiFi -B- HelpMe

Ho installato sul mio PC Ubuntu. La connessione dovrebbe avvenire in modalita' WiFi. Configurato tutto il pc si connette, in alto c'e' l'icona di connessione che riporta i dati della connessione WiFi. 
In realta' FireFox e gli altri prg non riescono a scambiare dati. 
Lato router sembrerebbe tutto a posto.
Aggiungo, rispetto la precedente discussione altri dati:
link: 
http://yfrog.com/0fimmagineqdxp
http://yfrog.com/5jimmagine1yozp
inoltre allego il risulatato dell'ifconfig:
eth0      Link encap:Ethernet  HWaddr xx:xx:xx:xx:xx:xx  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
          Interrupt:11 Base address:0xe000 
lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:94 errors:0 dropped:0 overruns:0 frame:0
          TX packets:94 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:8448 (8.4 KB)  TX bytes:8448 (8.4 KB)
wlan0     Link encap:Ethernet  HWaddr xx:xx:xx:xx:xx:xx  
          inet addr:192.168.1.30  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: xxxx::xxx:xxx:xxx:xxxx/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:11 errors:0 dropped:0 overruns:0 frame:0
          TX packets:244 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:1556 (1.5 KB)  TX bytes:21762 (21.7 KB)
wmaster0  Link encap:UNSPEC  HWaddr xx-xx-xx-xx-xx-xx-xx-xx-00-00-00-00-00-00-00-00  
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
Suggerimenti risolutivi?
-- 
Questo articolo e` stato inviato dal sito web 
http://www.nonsolonews.it

 Suggerimenti risolutivi?
Probabilmente si tratta di un problema di DNS. I suggerimenti
risolutivi arriveranno dopo che fornirai l'output di questi comandi:
sudo iwconfig wlan0
route -n
ping 192.168.1.1
ping 208.67.220.220
ping 193.70.152.15
host 
google.com
 193.70.152.15
--
cercolavoro76


Ecco i risultati, inizio a temere sia un problema del router....
sudo iwconfig wlan0
wlan0     IEEE 802.11bg  ESSID:"3ComMyne"  
          Mode:Managed  Frequency:2.412 GHz  Access Point: xx:xx:xx:xx:xx:xx   
          Bit Rate=1 Mb/s   Tx-Power=6 dBm   
          Retry min limit:7   RTS thr:off   Fragment thr=2352 B   
          Encryption key:xxxx-xxxx-xxxx-xxxx-xxxx-xxxx-xxxx-xxxx [2]   Security mode:open
          Power Management:off
          Link Quality=66/100  Signal level:-84 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0
route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.1.0     0.0.0.0         255.255.255.0   U     2      0        0 wlan0
169.254.0.0     0.0.0.0         255.255.0.0     U     1000   0        0 wlan0
0.0.0.0         192.168.1.1     0.0.0.0         UG    0      0        0 wlan0
ping 192.168.1.1
PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.
64 bytes from 
192.168.1.1
: icmp_seq=1 ttl=64 time=13.0 ms
64 bytes from 
192.168.1.1
: icmp_seq=2 ttl=64 time=5.91 ms
64 bytes from 
192.168.1.1
: icmp_seq=3 ttl=64 time=6.24 ms
64 bytes from 
192.168.1.1
: icmp_seq=4 ttl=64 time=3.11 ms
64 bytes from 
192.168.1.1
: icmp_seq=7 ttl=64 time=4.59 ms
^X^C
--- 192.168.1.1 ping statistics ---
29 packets transmitted, 5 received, 82% packet loss, time 28177ms
rtt min/avg/max/mdev = 3.113/6.573/13.005/3.400 ms
ping 208.67.220.220
PING 208.67.220.220 (208.67.220.220) 56(84) bytes of data.
From 192.168.1.30 icmp_seq=19 Destination Host Unreachable
From 192.168.1.30 icmp_seq=20 Destination Host Unreachable
From 192.168.1.30 icmp_seq=21 Destination Host Unreachable
From 192.168.1.30 icmp_seq=24 Destination Host Unreachable
From 192.168.1.30 icmp_seq=27 Destination Host Unreachable
From 192.168.1.30 icmp_seq=28 Destination Host Unreachable
From 192.168.1.30 icmp_seq=30 Destination Host Unreachable
From 192.168.1.30 icmp_seq=31 Destination Host Unreachable
From 192.168.1.30 icmp_seq=34 Destination Host Unreachable
From 192.168.1.30 icmp_seq=37 Destination Host Unreachable
From 192.168.1.30 icmp_seq=40 Destination Host Unreachable
From 192.168.1.30 icmp_seq=41 Destination Host Unreachable
From 192.168.1.30 icmp_seq=43 Destination Host Unreachable
From 192.168.1.30 icmp_seq=44 Destination Host Unreachable
From 192.168.1.30 icmp_seq=47 Destination Host Unreachable
From 192.168.1.30 icmp_seq=50 Destination Host Unreachable
From 192.168.1.30 icmp_seq=53 Destination Host Unreachable
From 192.168.1.30 icmp_seq=56 Destination Host Unreachable
From 192.168.1.30 icmp_seq=57 Destination Host Unreachable
From 192.168.1.30 icmp_seq=59 Destination Host Unreachable
From 192.168.1.30 icmp_seq=60 Destination Host Unreachable
From 192.168.1.30 icmp_seq=63 Destination Host Unreachable
From 192.168.1.30 icmp_seq=66 Destination Host Unreachable
From 192.168.1.30 icmp_seq=69 Destination Host Unreachable
From 192.168.1.30 icmp_seq=70 Destination Host Unreachable
From 192.168.1.30 icmp_seq=72 Destination Host Unreachable
From 192.168.1.30 icmp_seq=73 Destination Host Unreachable
From 192.168.1.30 icmp_seq=76 Destination Host Unreachable
From 192.168.1.30 icmp_seq=79 Destination Host Unreachable
From 192.168.1.30 icmp_seq=82 Destination Host Unreachable
From 192.168.1.30 icmp_seq=83 Destination Host Unreachable
From 192.168.1.30 icmp_seq=85 Destination Host Unreachable
From 192.168.1.30 icmp_seq=86 Destination Host Unreachable
From 192.168.1.30 icmp_seq=89 Destination Host Unreachable
From 192.168.1.30 icmp_seq=92 Destination Host Unreachable
From 192.168.1.30 icmp_seq=95 Destination Host Unreachable
From 192.168.1.30 icmp_seq=96 Destination Host Unreachable
From 192.168.1.30 icmp_seq=99 Destination Host Unreachable
^C
--- 208.67.220.220 ping statistics ---
102 packets transmitted, 0 received, +38 errors, 100% packet loss, time 101361ms
, pipe 3
ping 208.67.220.220
PING 208.67.220.220 (208.67.220.220) 56(84) bytes of data.
From 192.168.1.30 icmp_seq=19 Destination Host Unreachable
From 192.168.1.30 icmp_seq=20 Destination Host Unreachable
From 192.168.1.30 icmp_seq=21 Destination Host Unreachable
From 192.168.1.30 icmp_seq=24 Destination Host Unreachable
From 192.168.1.30 icmp_seq=27 Destination Host Unreachable
From 192.168.1.30 icmp_seq=28 Destination Host Unreachable
From 192.168.1.30 icmp_seq=30 Destination Host Unreachable
From 192.168.1.30 icmp_seq=31 Destination Host Unreachable
From 192.168.1.30 icmp_seq=34 Destination Host Unreachable
From 192.168.1.30 icmp_seq=37 Destination Host Unreachable
From 192.168.1.30 icmp_seq=40 Destination Host Unreachable
From 192.168.1.30 icmp_seq=41 Destination Host Unreachable
From 192.168.1.30 icmp_seq=43 Destination Host Unreachable
From 192.168.1.30 icmp_seq=44 Destination Host Unreachable
From 192.168.1.30 icmp_seq=47 Destination Host Unreachable
From 192.168.1.30 icmp_seq=50 Destination Host Unreachable
From 192.168.1.30 icmp_seq=53 Destination Host Unreachable
From 192.168.1.30 icmp_seq=56 Destination Host Unreachable
From 192.168.1.30 icmp_seq=57 Destination Host Unreachable
From 192.168.1.30 icmp_seq=59 Destination Host Unreachable
From 192.168.1.30 icmp_seq=60 Destination Host Unreachable
From 192.168.1.30 icmp_seq=63 Destination Host Unreachable
From 192.168.1.30 icmp_seq=66 Destination Host Unreachable
From 192.168.1.30 icmp_seq=69 Destination Host Unreachable
From 192.168.1.30 icmp_seq=70 Destination Host Unreachable
From 192.168.1.30 icmp_seq=72 Destination Host Unreachable
From 192.168.1.30 icmp_seq=73 Destination Host Unreachable
From 192.168.1.30 icmp_seq=76 Destination Host Unreachable
From 192.168.1.30 icmp_seq=79 Destination Host Unreachable
From 192.168.1.30 icmp_seq=82 Destination Host Unreachable
From 192.168.1.30 icmp_seq=83 Destination Host Unreachable
From 192.168.1.30 icmp_seq=85 Destination Host Unreachable
From 192.168.1.30 icmp_seq=86 Destination Host Unreachable
From 192.168.1.30 icmp_seq=89 Destination Host Unreachable
From 192.168.1.30 icmp_seq=92 Destination Host Unreachable
From 192.168.1.30 icmp_seq=95 Destination Host Unreachable
From 192.168.1.30 icmp_seq=96 Destination Host Unreachable
From 192.168.1.30 icmp_seq=99 Destination Host Unreachable
^C
--- 208.67.220.220 ping statistics ---
102 packets transmitted, 0 received, +38 errors, 100% packet loss, time 101361ms
, pipe 3
ping 193.70.152.15
PING 193.70.152.15 (193.70.152.15) 56(84) bytes of data.
From 192.168.1.30 icmp_seq=1 Destination Host Unreachable
From 192.168.1.30 icmp_seq=2 Destination Host Unreachable
From 192.168.1.30 icmp_seq=3 Destination Host Unreachable
From 192.168.1.30 icmp_seq=4 Destination Host Unreachable
From 192.168.1.30 icmp_seq=5 Destination Host Unreachable
From 192.168.1.30 icmp_seq=6 Destination Host Unreachable
From 192.168.1.30 icmp_seq=7 Destination Host Unreachable
From 192.168.1.30 icmp_seq=8 Destination Host Unreachable
From 192.168.1.30 icmp_seq=9 Destination Host Unreachable
From 192.168.1.30 icmp_seq=10 Destination Host Unreachable
From 192.168.1.30 icmp_seq=11 Destination Host Unreachable
From 192.168.1.30 icmp_seq=12 Destination Host Unreachable
From 192.168.1.30 icmp_seq=13 Destination Host Unreachable
From 192.168.1.30 icmp_seq=14 Destination Host Unreachable
From 192.168.1.30 icmp_seq=15 Destination Host Unreachable
^C
--- 193.70.152.15 ping statistics ---
16 packets transmitted, 0 received, +15 errors, 100% packet loss, time 15080ms
, pipe 3
host 
google.com
 193.70.152.15 
;; connection timed out; no servers could be reached


 [...]
Intuisci bene.
Il router non ti fa uscire e la rete wireless si comporta in modo strano 
(solo 1Mb e 6dBm).
Comtrolla lo stato della connessione WAN (Internet) sull'interfaccia WEB 
del router e aumenta velocita' e potenza in uscita della scheda wireless:
sudo iwconfig wlan0 txpower 15 rate 54M
-- 
cercolavoro76

sudo iwconfig wlan0 txpower 15 rate 54M
Niente. Provato non va.Ho reinstallato WindowsXP e con quello funzia.... :( Altri suggerimenti?


> sull'interfaccia WEB 
In Windows fai qualcosa, per attivare la connessione?
Se ti colleghi con un browser all'indirizzo 192.168.1.1, riesci a vedere 
lo stato della connessione?
Forse hai uno di quegli access point che attivano il NAT solo se prendi 
l'indirizzo DHCP da loro. In Windows usi DHCP? Prova ad usare DHCP.
Hai firewall attivati?
sudo iptables -F
sudo iptables -P INPUT ACCEPT
sudo iptables -P OUTPUT ACCEPT
ping -c 3 208.67.220.220
-- 
cercolavoro76

ping -c 3 208.67.220.220
In Windows non faccio nulla.... 192.168.1.1 si mi collego al router.... non so e' un 3com. In Windows uso il DCHP, non firewall attivati su Linux. Grazie e a presto!


 [...] In Windows uso il DCHP [...]
Le immagini che avevi linkato mostravano indirizzi IP statici.
Usa il DHCP anche su Linux.
-- 
cercolavoro76