Hello,
I'm submitting a problem regarding a wireless connection (ad-hoc)
between two computers using both a Netgear N150 WMA1000M USB adapter
(rtl8192cu chipset). Setup seem to be correct (I can detect my
neighbor's networks) but pinging and trying to ssh between my two
machines gives no result, in neither direction. Each computer can ping
to itself. I searched a lot on the Internet, I noticed that others have
a quite similar problem but I couldn't find an answer, so I'm posting
here :-)
More information on my setup:
- Debian Squeeze 6.0.5, kernel 3.2 (bpo)
- machine#1: Pentium4 2.66GHz, kernel 686
- machine#2: Celeron Core 2x2.4GHz, kernel amd64
- firmware-realtek 0.35 (bpo) installed
- wireless-tools installed
- firewalls are down, I also disabled all wired connections
- both modules rtl-8192cu and ath9k_htc seem to work
- no WPA enabled
- the machines are close to each other (just one brick wall in between)
- yes, I also tried with no brick walls in between, using a laptop with
the same N150 adapter - and with the same result
I'm posting more details below.
Is it an incorrect setup on my part, or maybe a hardware issue?
Any suggestion will be really appreciated.
Thank you,
Andrew
P.S. Sorry for my non native english
-----------------------------------------------------
# /etc/network/interfaces
------------------------->>
[machine#1]
auto wlan0
iface wlan0 inet static
address 192.168.15.2
netmask 255.255.255.0
wireless-mode ad-hoc
wireless-channel 7
wireless-essid wlnxnetwork
[machine#2]
auto wlan0
iface wlan0 inet static
address 192.168.15.2
netmask 255.255.255.0
wireless-mode ad-hoc
wireless-channel 7
wireless-essid wlnxnetwork
~# hwinfo --usb
--------------->>
[snip]
10: USB 00.0: 0000 Unclassified device
[Created at usb.122]
UDI: /org/freedesktop/Hal/devices/usb_device_846_9041_00e04c000001_if0
Unique ID: 6Vab.2GCN8NqTrPB
Parent ID: PYMB.WvppkBPnhU7
SysFS ID: /devices/pci0000:00/0000:00:1d.2/usb4/4-1/4-1.4/4-1.4:1.0
SysFS BusID: 4-1.4:1.0
Hardware Class: unknown
Model: "NetGear 802.11n WLAN Adapter"
Hotplug: USB
Vendor: usb 0x0846 "NetGear, Inc."
Device: usb 0x9041 "802.11n WLAN Adapter"
Revision: "2.00"
Serial ID: "00e04c000001"
Driver: "rtl8192cu"
Driver Modules: "rtl8192cu"
Device File: wlan0
Speed: 12 Mbps
HW Address: 4c:60:de:5c:56:59
Link detected: no
Module Alias: "usb:v0846p9041d0200dc00dsc00dp00icFFiscFFipFF"
Driver Info #0:
Driver Status: rtl8192cu is active
Driver Activation Cmd: "modprobe rtl8192cu"
Config Status: cfg=new, avail=yes, need=no, active=unknown
[snip]
~# ifup wlan0
------------->>
[/var/log/syslog]
[snip]
Jun 1 17:01:56 debmachine kernel: [ 4070.586552] rtl8192cu: MAC auto ON
okay!
Jun 1 17:01:57 debmachine kernel: [ 4070.845527] rtl8192cu: Tx queue
select: 0x05
Jun 1 17:01:57 debmachine kernel: [ 4070.849538] rtl8192c_common:
Loading firmware file rtlwifi/rtl8192cufw.bin
Jun 1 17:01:57 debmachine avahi-daemon[1865]: Joining mDNS multicast
group on interface wlan0.IPv4 with address 192.168.15.3.
Jun 1 17:01:57 debmachine avahi-daemon[1865]: New relevant interface
wlan0.IPv4 for mDNS.
Jun 1 17:01:57 debmachine avahi-daemon[1865]: Registering new address
record for 192.168.15.3 on wlan0.IPv4.
Jun 1 17:01:57 debmachine kernel: [ 4071.513687] wlan0: Trigger new
scan to find an IBSS to join
Jun 1 17:01:58 debmachine avahi-daemon[1865]: Joining mDNS multicast
group on interface wlan0.IPv6 with address fe80::4e60:deff:fe5c:5659.
Jun 1 17:01:58 debmachine avahi-daemon[1865]: New relevant interface
wlan0.IPv6 for mDNS.
Jun 1 17:01:58 debmachine avahi-daemon[1865]: Registering new address
record for fe80::4e60:deff:fe5c:5659 on wlan0.*.
Jun 1 17:02:00 debmachine kernel: [ 4073.663775] wlan0: Trigger new
scan to find an IBSS to join
Jun 1 17:02:02 debmachine kernel: [ 4075.813877] wlan0: Trigger new
scan to find an IBSS to join
Jun 1 17:02:04 debmachine kernel: [ 4078.168935] wlan0: Trigger new
scan to find an IBSS to join
Jun 1 17:02:05 debmachine kernel: [ 4078.680978] wlan0: Creating new
IBSS network, BSSID 46:68:c6:ee:2b:5b
Jun 1 17:02:07 debmachine kernel: [ 4081.568018] wlan0: no IPv6 routers
present
~# iwconfig wlan0
----------------->>
wlan0 IEEE 802.11bgn ESSID:"wlnxnetwork"
Mode:Ad-Hoc Frequency:2.442 GHz Cell: 46:68:C6:EE:2B:5B
Tx-Power=20 dBm
Retry long limit:7 RTS thr=2347 B Fragment thr:off
Encryption key:off
Power Management:on
~# iwlist wlan0 scan
-------------------->>
wlan0 Scan completed :
Cell 01 - Address: 46:68:C6:EE:2B:5B
Channel:7
Frequency:2.442 GHz (Channel 7)
Quality=70/70 Signal level=0 dBm
Encryption key:off
ESSID:"wlnxnetwork"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
9 Mb/s; 12 Mb/s; 18 Mb/s
Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Ad-Hoc
Extra:tsf=0000000000000000
Extra: Last beacon: 343560ms ago
IE: Unknown: 000B776C6E786E6574776F726B
IE: Unknown: 010882040B160C121824
IE: Unknown: 030107
IE: Unknown: 06020000
IE: Unknown: 32043048606C
IE: Unknown: DD070050F202000100
~# route
-------->>
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
192.168.15.0 * 255.255.255.0 U 0 0 0
wlan0
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