I have the same problem with Quantal on a Toshiba Satellite U305-S2812.
None of my devices can detect or connect to the hotspot.
uname -a
Linux kbook 3.5.0-25-generic #39-Ubuntu SMP Mon Feb 25 19:02:34 UTC 2013
i686 i686 i686 GNU/Linux
dmesg
[64571.793407] wlan0: Trigger new scan to find an IBSS to join
[64574.248847] wlan0: Trigger new scan to find an IBSS to join
[64577.992028] wlan0: Trigger new scan to find an IBSS to join
[64579.676124] wlan0: Creating new IBSS network, BSSID 1e:9b:e2:d9:c3:9e
[64579.728350] iwl4965 0000:04:00.0: Unable to find TIM Element in beacon
[64579.732553] iwl4965 0000:04:00.0: Unable to find TIM Element in beacon
[64579.741253] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[64580.897054] ip_tables: (C) 2000-2006 Netfilter Core Team
[64580.928352] nf_conntrack version 0.5.0 (16384 buckets, 65536 max)
[64608.189137] wlan0: No active IBSS STAs - trying to scan for other IBSS
networks with same SSID (merge)
[64639.416191] wlan0: No active IBSS STAs - trying to scan for other IBSS
networks with same SSID (merge)
[64670.322606] wlan0: No active IBSS STAs - trying to scan for other IBSS
networks with same SSID (merge)
[64702.428591] wlan0: No active IBSS STAs - trying to scan for other IBSS
networks with same SSID (merge)
[64754.597525] wlan0: No active IBSS STAs - trying to scan for other IBSS
networks with same SSID (merge)
[64793.048703] wlan0: No active IBSS STAs - trying to scan for other IBSS
networks with same SSID (merge)
[64843.414796] iwl4965 0000:04:00.0: C_REM_STA failed
[64843.414806] iwl4965 0000:04:00.0: failed to remove IBSS station
00:00:00:00:00:00
[64847.854108] wlan0: Trigger new scan to find an IBSS to join
[64850.060980] wlan0: Trigger new scan to find an IBSS to join
[64852.292964] wlan0: Trigger new scan to find an IBSS to join
[64854.495343] wlan0: Trigger new scan to find an IBSS to join
[64854.874299] wlan0: Creating new IBSS network, BSSID aa:5a:31:aa:7c:6a
[64854.909370] iwl4965 0000:04:00.0: Unable to find TIM Element in beacon
[64854.911470] iwl4965 0000:04:00.0: Unable to find TIM Element in beacon
lspci -v
04:00.0 Network controller: Intel Corporation PRO/Wireless 4965 AG or AGN
[Kedron] Network Connection (rev 61)
Subsystem: Intel Corporation Vaio VGN-SZ79SN_C
Flags: bus master, fast devsel, latency 0, IRQ 47
Memory at f0200000 (64-bit, non-prefetchable) [size=8K]
Capabilities: [c8] Power Management version 3
Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [e0] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Device Serial Number 00-1d-e0-ff-xx-xx-xx-xx
Kernel driver in use: iwl4965
Kernel modules: iwl4965
ethtool -i wlan0
driver: iwl4965
version: 3.5.0-25-generic
firmware-version: 228.61.2.24
bus-info: 0000:04:00.0
supports-statistics: yes
supports-test: no
supports-eeprom-access: no
supports-register-dump: no
supports-priv-flags: no
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https://bugs.launchpad.net/bugs/786697
Title:
Unable to find TIM Element in beacon
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