I am suffering from the same problem. My NIC is an Intel 6205:
03:00.0 Network controller: Intel Corporation Centrino Advanced-N 6205 (rev 34)
Subsystem: Intel Corporation Centrino Advanced-N 6205 AGN
Flags: bus master, fast devsel, latency 0, IRQ 49
Memory at f2500000 (64-bit, non-prefetchable) [size=8K]
Capabilities: <access denied>
Kernel driver in use: iwlwifi
Kernel modules: iwlwifi
My observations are:
Almost all WiFi networks work flawless using NetworkManager. However,
with some networks I have persistent problems. I get a connection for a
few minutes following boot-up, after that the NetworkManager icon goes
to "scanning" and the syslog fllls up with "direct probe timed out
messages. I experience this problem *only* in my university. They use
exclusively Cisco equipment. I can look up the access point models if
necessary.
I am rather sure that NetworkManager is part of the problem. I
experience the problem even when trying to connect to an unencrypted
network at my university. However, when I stop NetworkManager and
connect manually (iwconfig wlan0 essid FOO; ifconfig wlan0 up; dhclient
wlan0) the bug does not occur even after hours.
I also tried "iwconfig wlan0 power off" but this does not fix the
"direct probe timeout" problem.
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https://bugs.launchpad.net/bugs/924082
Title:
NM fails to connect to campus Wi-Fi network; wicd succeeds -- Centrino
Ultimate-N 6300 iwlwifi
Status in “network-manager” package in Ubuntu:
Confirmed
Bug description:
The iwlwifi drivers give exceptional performance on all APs I have
connected to, be they WEP, WPA or open. The only time this system lets
me down is when connecting to my campus wireless network.
NetworkManager will only sometimes connect, and even manually
configuring with iwconfig does not always work.
The error usually given is either:
Jan 30 01:07:51 Beast kernel: [ 8777.748471] wlan0: direct probe to
00:1a:1e:a0:3b:c0 (try 1/3)
Jan 30 01:07:51 Beast kernel: [ 8777.945384] wlan0: direct probe to
00:1a:1e:a0:3b:c0 (try 2/3)
Jan 30 01:07:51 Beast kernel: [ 8778.144952] wlan0: direct probe to
00:1a:1e:a0:3b:c0 (try 3/3)
Jan 30 01:07:52 Beast kernel: [ 8778.344474] wlan0: direct probe to
00:1a:1e:a0:3b:c0 timed out
or:
Nov 30 19:01:27 Beast kernel: [ 1924.850725] wlan0: authenticate with
00:24:6c:60:d0:00 (try 1)
Nov 30 19:01:27 Beast kernel: [ 1924.852183] wlan0: 00:24:6c:60:d0:00 denied
authentication (status 17)
Other people report that this error may be linked to MAC filtering by
the AP, but this should not be the case: my old computer with a
Broadcom BCM4312 had no trouble.
This bug is also different from several bug reports that complain of
limited speed or packet loss: when I can connect, the connection is
flawless. But very often I cannot connecct. The connection is
generally worse in crowded areas, or areas with many access points.
lspci:
Network controller [0280]: Intel Corporation Centrino Ultimate-N 6300
[8086:4238] (rev 3e)
ifconfig wlan0:
wlan0 Link encap:Ethernet HWaddr 24:77:03:26:e8:50
inet addr:130.64.153.137 Bcast:130.64.153.255 Mask:255.255.255.0
inet6 addr: fe80::2677:3ff:fe26:e850/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1288307 errors:0 dropped:0 overruns:0 frame:0
TX packets:296448 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1016044127 (1.0 GB) TX bytes:27674773 (27.6 MB)
iwconfig wlan0:
wlan0 IEEE 802.11abgn ESSID:"tuftswireless"
Mode:Managed Frequency:5.785 GHz Access Point: 00:24:6C:60:D0:10
Bit Rate=300 Mb/s Tx-Power=15 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=61/70 Signal level=-49 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:2749 Invalid misc:7 Missed beacon:0
lsmod | grep iw:
iwlwifi 320164 0
mac80211 506154 1 iwlwifi
cfg80211 209294 2 iwlwifi,mac80211
dmesg | grep wlan:
[ 12.059405] wlan0: direct probe to 00:24:6c:60:d0:00 (try 1/3)
[ 12.258109] wlan0: direct probe to 00:24:6c:60:d0:00 (try 2/3)
[ 12.457695] wlan0: direct probe to 00:24:6c:60:d0:00 (try 3/3)
[ 12.657205] wlan0: direct probe to 00:24:6c:60:d0:00 timed out
[ 20.624778] wlan0: direct probe to 00:24:6c:60:d0:00 (try 1/3)
[ 20.822683] wlan0: direct probe to 00:24:6c:60:d0:00 (try 2/3)
[ 21.022217] wlan0: direct probe to 00:24:6c:60:d0:00 (try 3/3)
[ 21.221788] wlan0: direct probe to 00:24:6c:60:d0:00 timed out
[ 29.105117] wlan0: direct probe to 00:24:6c:60:d0:00 (try 1/3)
[ 29.303463] wlan0: direct probe to 00:24:6c:60:d0:00 (try 2/3)
[ 29.503007] wlan0: direct probe to 00:24:6c:60:d0:00 (try 3/3)
[ 29.702581] wlan0: direct probe to 00:24:6c:60:d0:00 timed out
[ 37.888734] wlan0: direct probe to 00:24:6c:60:d0:00 (try 1/3)
[ 38.087513] wlan0: direct probe to 00:24:6c:60:d0:00 (try 2/3)
[ 38.287083] wlan0: direct probe to 00:24:6c:60:d0:00 (try 3/3)
[ 38.486602] wlan0: direct probe to 00:24:6c:60:d0:00 timed out
[ 46.376942] wlan0: authenticate with 00:24:6c:60:d0:00 (try 1)
[ 46.411091] wlan0: 00:24:6c:60:d0:00 denied authentication (status 17)
syslog:
Nov 30 19:01:27 Beast kernel: [ 1924.850725] wlan0: authenticate with
00:24:6c:60:d0:00 (try 1)
Nov 30 19:01:27 Beast kernel: [ 1924.852183] wlan0: 00:24:6c:60:d0:00 denied
authentication (status 17)
Nov 30 19:02:24 Beast NetworkManager[1332]: <warn> Activation
(wlan0/wireless): association took too long, failing activation.
Nov 30 19:02:24 Beast NetworkManager[1332]: <info> (wlan0): device state
change: config -> failed (reason 'supplicant-timeout') [50 120 11]
Nov 30 19:02:24 Beast NetworkManager[1332]: <warn> Activation (wlan0) failed
for access point (tuftswireless)
Nov 30 19:02:24 Beast NetworkManager[1332]: <warn> Activation (wlan0) failed.
Nov 30 19:02:24 Beast NetworkManager[1332]: <info> (wlan0): device state
change: failed -> disconnected (reason 'none') [120 30 0]
Nov 30 19:02:24 Beast NetworkManager[1332]: <info> (wlan0): deactivating
device (reason 'none') [0]
Nov 30 19:02:24 Beast NetworkManager[1332]: <info> (wlan0): supplicant
interface state: authenticating -> disconnected
Nov 30 19:02:24 Beast NetworkManager[1332]: <warn> Couldn't disconnect
supplicant interface: This interface is not connected.
Nov 30 19:02:27 Beast NetworkManager[1332]: <info> Auto-activating connection
'Auto hpsetup'.
Nov 30 19:02:27 Beast NetworkManager[1332]: <info> Activation (wlan0)
starting connection 'Auto hpsetup'
Nov 30 19:02:27 Beast NetworkManager[1332]: <info> (wlan0): device state
change: disconnected -> prepare (reason 'none') [30 40 0]
Nov 30 19:02:27 Beast NetworkManager[1332]: <info> Activation (wlan0) Stage 1
of 5 (Device Prepare) scheduled...
Nov 30 19:02:27 Beast NetworkManager[1332]: <info> Activation (wlan0) Stage 1
of 5 (Device Prepare) started...
Nov 30 19:02:27 Beast NetworkManager[1332]: <info> Activation (wlan0) Stage 2
of 5 (Device Configure) scheduled...
Nov 30 19:02:27 Beast NetworkManager[1332]: <info> Activation (wlan0) Stage 1
of 5 (Device Prepare) complete.
Nov 30 19:02:27 Beast NetworkManager[1332]: <info> Activation (wlan0) Stage 2
of 5 (Device Configure) starting...
Nov 30 19:02:27 Beast NetworkManager[1332]: <info> (wlan0): device state
change: prepare -> config (reason 'none') [40 50 0]
Nov 30 19:02:27 Beast NetworkManager[1332]: <info> Activation
(wlan0/wireless): connection 'Auto hpsetup' requires no security. No secrets
needed.
Nov 30 19:02:27 Beast NetworkManager[1332]: <info> Config: added 'ssid' value
'tuftswireless'
Nov 30 19:02:27 Beast NetworkManager[1332]: <info> Config: added 'scan_ssid'
value '1'
Nov 30 19:02:27 Beast NetworkManager[1332]: <info> Config: added 'key_mgmt'
value 'NONE'
Nov 30 19:02:27 Beast NetworkManager[1332]: <info> Activation (wlan0) Stage 2
of 5 (Device Configure) complete.
Nov 30 19:02:27 Beast NetworkManager[1332]: <info> Config: set interface
ap_scan to 1
Nov 30 19:02:27 Beast NetworkManager[1332]: <info> (wlan0): supplicant
interface state: disconnected -> scanning
Nov 30 19:02:30 Beast wpa_supplicant[6090]: Trying to authenticate with
00:24:6c:60:d0:00 (SSID='tuftswireless' freq=2437 MHz)
Nov 30 19:02:30 Beast NetworkManager[1332]: <info> (wlan0): supplicant
interface state: scanning -> authenticating
Nov 30 19:02:30 Beast kernel: [ 1987.684183] wlan0: authenticate with
00:24:6c:60:d0:00 (try 1)
Nov 30 19:02:30 Beast kernel: [ 1987.687421] wlan0: 00:24:6c:60:d0:00 denied
authentication (status 17)
sudo iwlist scan:
wlan0 Scan completed :
Cell 01 - Address: 00:24:6C:60:D0:10
Channel:157
Frequency:5.785 GHz
Quality=57/70 Signal level=-53 dBm
Encryption key:off
ESSID:"tuftswireless"
Bit Rates:12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s; 48 Mb/s
54 Mb/s
Mode:Master
Extra:tsf=0000005a132e5c6a
Extra: Last beacon: 76ms ago
IE: Unknown: 000D7475667473776972656C657373
IE: Unknown: 010698243048606C
IE: Unknown: 03019D
IE: Unknown:
2D1A4E001BFFFF000000000000000000000000000000000000000000
IE: Unknown:
3D169D051B000000FF000000000000000000000000000000
IE: Unknown:
DD1E00904C334E001BFFFF000000000000000000000000000000000000000000
IE: Unknown:
DD1A00904C349D051B000000FF000000000000000000000000000000
IE: Unknown:
DD180050F2020101800003A4000027A4000042435E0062322F00
IE: Unknown: DD0A00037F04010000000000
Cell 02 - Address: 00:0B:86:58:19:A0
Channel:1
Frequency:2.412 GHz (Channel 1)
Quality=39/70 Signal level=-71 dBm
Encryption key:off
ESSID:"tuftswireless"
Bit Rates:2 Mb/s; 6 Mb/s; 9 Mb/s; 11 Mb/s; 12 Mb/s
18 Mb/s; 24 Mb/s; 36 Mb/s
Bit Rates:48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=0000000202533181
Extra: Last beacon: 9104ms ago
IE: Unknown: 000D7475667473776972656C657373
IE: Unknown: 0108840C121618243048
IE: Unknown: 030101
IE: Unknown: 2A0100
IE: Unknown: 3202606C
IE: Unknown:
DD180050F2020101800003A4000027A4000042435E0062322F00
IE: Unknown: DD0A00037F04010000000000
Cell 03 - Address: 00:24:6C:60:CF:A0
Channel:6
Frequency:2.437 GHz (Channel 6)
Quality=50/70 Signal level=-60 dBm
Encryption key:off
ESSID:"tuftswireless"
Bit Rates:2 Mb/s; 11 Mb/s; 6 Mb/s; 9 Mb/s; 12 Mb/s
18 Mb/s; 24 Mb/s; 36 Mb/s
Bit Rates:48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=0000000c808e35af
Extra: Last beacon: 8704ms ago
IE: Unknown: 000D7475667473776972656C657373
IE: Unknown: 010884160C1218243048
IE: Unknown: 030106
IE: Unknown: 050400010100
IE: Unknown: 2A0100
IE: Unknown: 3202606C
IE: Unknown:
2D1A4C101BFFFF000000000000000000000000000000000000000000
IE: Unknown:
3D1606001B000000FF000000000000000000000000000000
IE: Unknown:
DD1E00904C334C101BFFFF000000000000000000000000000000000000000000
IE: Unknown:
DD1A00904C3406001B000000FF000000000000000000000000000000
IE: Unknown:
DD180050F2020101800003A4000027A4000042435E0062322F00
IE: Unknown: DD0A00037F04010000000000
Cell 04 - Address: 00:0B:86:58:1F:A0
Channel:11
Frequency:2.462 GHz (Channel 11)
Quality=38/70 Signal level=-72 dBm
Encryption key:off
ESSID:"tuftswireless"
Bit Rates:2 Mb/s; 11 Mb/s; 6 Mb/s; 9 Mb/s; 12 Mb/s
18 Mb/s; 24 Mb/s; 36 Mb/s
Bit Rates:48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=00000006687da181
Extra: Last beacon: 7328ms ago
IE: Unknown: 000D7475667473776972656C657373
IE: Unknown: 010884160C1218243048
IE: Unknown: 03010B
IE: Unknown: 050400010180
IE: Unknown: 2A0102
IE: Unknown: 3202606C
IE: Unknown:
DD180050F2020101800003A4000027A4000042435E0062322F00
IE: Unknown: DD0A00037F04010000000000
Cell 05 - Address: 00:24:6C:60:CF:B0
Channel:36
Frequency:5.18 GHz (Channel 36)
Quality=41/70 Signal level=-69 dBm
Encryption key:off
ESSID:"tuftswireless"
Bit Rates:12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s; 48 Mb/s
54 Mb/s
Mode:Master
Extra:tsf=0000002e94c969ed
Extra: Last beacon: 7072ms ago
IE: Unknown: 000D7475667473776972656C657373
IE: Unknown: 010698243048606C
IE: Unknown: 030124
IE: Unknown:
2D1A4E001BFFFF000000000000000000000000000000000000000000
IE: Unknown:
3D1624050A000000FF000000000000000000000000000000
IE: Unknown:
DD1E00904C334E001BFFFF000000000000000000000000000000000000000000
IE: Unknown:
DD1A00904C3424050A000000FF000000000000000000000000000000
IE: Unknown:
DD180050F2020101800003A4000027A4000042435E0062322F00
IE: Unknown: DD0A00037F04010000000000
Cell 06 - Address: 00:0B:86:59:FD:C8
Channel:40
Frequency:5.2 GHz (Channel 40)
Quality=31/70 Signal level=-79 dBm
Encryption key:off
ESSID:"tuftswireless"
Bit Rates:12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s; 48 Mb/s
54 Mb/s
Mode:Master
Extra:tsf=0000005a137c235f
Extra: Last beacon: 6560ms ago
IE: Unknown: 000D7475667473776972656C657373
IE: Unknown: 010698243048606C
IE: Unknown: 030128
IE: Unknown:
DD180050F2020101800003A4000027A4000042435E0062322F00
IE: Unknown: DD0A00037F04010000000000
Cell 07 - Address: 00:24:6C:60:D5:50
Channel:44
Frequency:5.22 GHz (Channel 44)
Quality=37/70 Signal level=-73 dBm
Encryption key:off
ESSID:"tuftswireless"
Bit Rates:12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s; 48 Mb/s
54 Mb/s
Mode:Master
Extra:tsf=0000005a1328778d
Extra: Last beacon: 6336ms ago
IE: Unknown: 000D7475667473776972656C657373
IE: Unknown: 010698243048606C
IE: Unknown: 03012C
IE: Unknown:
2D1A4E001BFFFF000000000000000000000000000000000000000000
IE: Unknown:
3D162C0508000000FF000000000000000000000000000000
IE: Unknown:
DD1E00904C334E001BFFFF000000000000000000000000000000000000000000
IE: Unknown:
DD1A00904C342C0508000000FF000000000000000000000000000000
IE: Unknown:
DD180050F2020101800003A4000027A4000042435E0062322F00
IE: Unknown: DD0A00037F04010000000000
Cell 08 - Address: 00:0B:86:58:1F:A8
Channel:48
Frequency:5.24 GHz (Channel 48)
Quality=34/70 Signal level=-76 dBm
Encryption key:off
ESSID:"tuftswireless"
Bit Rates:12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s; 48 Mb/s
54 Mb/s
Mode:Master
Extra:tsf=0000005a13a8e1c3
Extra: Last beacon: 6124ms ago
IE: Unknown: 000D7475667473776972656C657373
IE: Unknown: 010698243048606C
IE: Unknown: 030130
IE: Unknown:
DD180050F2020101800003A4000027A4000042435E0062322F00
IE: Unknown: DD0A00037F04010000000000
Cell 09 - Address: 00:24:6C:60:CF:F0
Channel:149
Frequency:5.745 GHz
Quality=37/70 Signal level=-73 dBm
Encryption key:off
ESSID:"tuftswireless"
Bit Rates:12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s; 48 Mb/s
54 Mb/s
Mode:Master
Extra:tsf=0000005a131955bb
Extra: Last beacon: 764ms ago
IE: Unknown: 000D7475667473776972656C657373
IE: Unknown: 010698243048606C
IE: Unknown: 030195
IE: Unknown:
2D1A4E001BFFFF000000000000000000000000000000000000000000
IE: Unknown:
3D16950508000000FF000000000000000000000000000000
IE: Unknown:
DD1E00904C334E001BFFFF000000000000000000000000000000000000000000
IE: Unknown:
DD1A00904C34950508000000FF000000000000000000000000000000
IE: Unknown:
DD180050F2020101800003A4000027A4000042435E0062322F00
IE: Unknown: DD0A00037F04010000000000
lsb_release -d:
Description: Ubuntu 11.10
uname -a:
Linux Beast 3.0.0-13-generic #22-Ubuntu SMP Wed Nov 2 13:27:26 UTC 2011
x86_64 x86_64 x86_64 GNU/Linux
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