Public bug reported:
I have a realtek rtl8192_pci wireless card, which is regularly
disconecting from the access point after upgrading from 10.10 to 11.04.
While under continuous traffic, the disconnects do not happen (ping is
sufficient to remain connected), however normal web browsing is not
sufficient, and about once per minute the card will disconnect and re-
associate.
Information
----------------
Card:
02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8191SEvA
Wireless LAN Controller (rev 10)
Kernel:
Linux mosasaur 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:24 UTC 2011
x86_64 x86_64 x86_64 GNU/Linux
Loaded modules for wifi:
r8192se_pci 524220 0
cfg80211 178528 1 r8192se_pci
Network is WPA2 encrypted.
During a constant ping, dmesg has the following errors but the connection is
stable (two instances shown which occur 100 seconds apart):
[ 3038.006029] ===>rtl8192se_link_change():ieee->iw_mode is 2
[ 3038.060191] =====>rtl8192_set_chan()====ch:1
[ 3038.180078] =====>rtl8192_set_chan()====ch:2
[ 3038.300094] =====>rtl8192_set_chan()====ch:3
[ 3038.420063] =====>rtl8192_set_chan()====ch:4
[ 3038.540066] =====>rtl8192_set_chan()====ch:5
[ 3038.660073] =====>rtl8192_set_chan()====ch:6
[ 3038.780086] =====>rtl8192_set_chan()====ch:7
[ 3038.900059] =====>rtl8192_set_chan()====ch:8
[ 3039.029602] =====>rtl8192_set_chan()====ch:9
[ 3039.140069] =====>rtl8192_set_chan()====ch:10
[ 3039.260065] =====>rtl8192_set_chan()====ch:11
[ 3039.380052] =====>rtl8192_set_chan()====ch:12
[ 3039.500059] =====>rtl8192_set_chan()====ch:13
[ 3039.620084] =====>rtl8192_set_chan()====ch:6
[ 3039.630330] ===>rtl8192se_link_change():ieee->iw_mode is 2
[ 3039.630334] rtl8192_update_cap(): WLAN_CAPABILITY_SHORT_PREAMBLE
[ 3138.003814] ===>rtl8192se_link_change():ieee->iw_mode is 2
[ 3138.060171] =====>rtl8192_set_chan()====ch:1
[ 3138.180057] =====>rtl8192_set_chan()====ch:2
[ 3138.300090] =====>rtl8192_set_chan()====ch:3
[ 3138.420087] =====>rtl8192_set_chan()====ch:4
[ 3138.540063] =====>rtl8192_set_chan()====ch:5
[ 3138.660076] =====>rtl8192_set_chan()====ch:6
[ 3138.780075] =====>rtl8192_set_chan()====ch:7
[ 3138.900063] =====>rtl8192_set_chan()====ch:8
[ 3139.020069] =====>rtl8192_set_chan()====ch:9
[ 3139.140046] =====>rtl8192_set_chan()====ch:10
[ 3139.260067] =====>rtl8192_set_chan()====ch:11
[ 3139.380065] =====>rtl8192_set_chan()====ch:12
[ 3139.500068] =====>rtl8192_set_chan()====ch:13
[ 3139.620084] =====>rtl8192_set_chan()====ch:6
[ 3139.630325] ===>rtl8192se_link_change():ieee->iw_mode is 2
[ 3139.630332] rtl8192_update_cap(): WLAN_CAPABILITY_SHORT_PREAMBLE
During no traffic, the following appears in dmesg:
[ 2767.450318] ===>rtl819x_watchdog_wqcallback(): AP is power off,chan:6,
connect another one
[ 2767.450325] ===========>RemovePeerTS,94:0c:6d:f5:e7:c4
[ 2767.450330] ===>rtl8192se_link_change():ieee->iw_mode is 2
[ 2767.450389] notify_wx_assoc_event(): Tell user space disconnected
[ 2767.550886] =====>rtl8192_set_chan()====ch:1
[ 2767.670076] =====>rtl8192_set_chan()====ch:2
[ 2767.790059] =====>rtl8192_set_chan()====ch:3
[ 2767.910078] =====>rtl8192_set_chan()====ch:4
[ 2768.030073] =====>rtl8192_set_chan()====ch:5
[ 2768.150067] =====>rtl8192_set_chan()====ch:6
[ 2768.270096] =====>rtl8192_set_chan()====ch:7
[ 2768.390059] =====>rtl8192_set_chan()====ch:8
[ 2768.510084] =====>rtl8192_set_chan()====ch:9
[ 2768.630091] =====>rtl8192_set_chan()====ch:10
[ 2768.750111] =====>rtl8192_set_chan()====ch:11
[ 2768.870083] =====>rtl8192_set_chan()====ch:12
[ 2768.990071] =====>rtl8192_set_chan()====ch:13
[ 2769.111366] Linking with Mitchell,channel:6, qos:0, myHT:0, networkHT:0,
mode:6 cur_net.flags:0x406
[ 2769.111391] ===>rtllib_associate_procedure_wq(), chan:6
[ 2769.111395] HTSetConnectBwMode():pHTInfo->bCurBW40MHz:0
[ 2769.111400] =====>rtl8192_set_chan()====ch:6
[ 2769.121624] Linking with Mitchell,channel:6, qos:0, myHT:0, networkHT:0,
mode:6 cur_net.flags:0x406
[ 2769.121639] Linking with Mitchell,channel:6, qos:0, myHT:0, networkHT:0,
mode:6 cur_net.flags:0x406
[ 2769.122016] ===>rtllib_associate_procedure_wq(), chan:6
[ 2769.122021] HTSetConnectBwMode():pHTInfo->bCurBW40MHz:0
[ 2769.122025] =====>rtl8192_set_chan()====ch:6
[ 2769.133451] rtl8192_SetWirelessMode(), wireless_mode:4, bEnableHT = 0
[ 2769.135810] Associated successfully
[ 2769.135813] normal associate
[ 2769.135820] Using G rates:108
[ 2769.135823] Successfully associated, ht not enabled(0, 0)
[ 2769.135827] ===>rtl8192se_link_change():ieee->iw_mode is 2
[ 2769.135832] rtl8192_update_cap(): WLAN_CAPABILITY_SHORT_PREAMBLE
[ 2773.450336] ===>rtl819x_watchdog_wqcallback(): AP is power off,chan:6,
connect another one
[ 2773.450343] ===========>RemovePeerTS,94:0c:6d:f5:e7:c4
[ 2773.450348] ===>rtl8192se_link_change():ieee->iw_mode is 2
[ 2773.450408] notify_wx_assoc_event(): Tell user space disconnected
[ 2773.550904] =====>rtl8192_set_chan()====ch:1
[ 2773.670048] =====>rtl8192_set_chan()====ch:2
[ 2773.790056] =====>rtl8192_set_chan()====ch:3
[ 2773.910071] =====>rtl8192_set_chan()====ch:4
[ 2774.030067] =====>rtl8192_set_chan()====ch:5
[ 2774.150062] =====>rtl8192_set_chan()====ch:6
[ 2774.270077] =====>rtl8192_set_chan()====ch:7
[ 2774.390083] =====>rtl8192_set_chan()====ch:8
[ 2774.510082] =====>rtl8192_set_chan()====ch:9
[ 2774.630085] =====>rtl8192_set_chan()====ch:10
[ 2774.750099] =====>rtl8192_set_chan()====ch:11
[ 2774.870079] =====>rtl8192_set_chan()====ch:12
[ 2774.990054] =====>rtl8192_set_chan()====ch:13
[ 2775.110645] Linking with Mitchell,channel:6, qos:0, myHT:0, networkHT:0,
mode:6 cur_net.flags:0x406
[ 2775.110670] ===>rtllib_associate_procedure_wq(), chan:6
[ 2775.110675] HTSetConnectBwMode():pHTInfo->bCurBW40MHz:0
[ 2775.110678] =====>rtl8192_set_chan()====ch:6
[ 2775.120789] Linking with Mitchell,channel:6, qos:0, myHT:0, networkHT:0,
mode:6 cur_net.flags:0x406
[ 2775.120806] Linking with Mitchell,channel:6, qos:0, myHT:0, networkHT:0,
mode:6 cur_net.flags:0x406
[ 2775.121232] ===>rtllib_associate_procedure_wq(), chan:6
[ 2775.121235] HTSetConnectBwMode():pHTInfo->bCurBW40MHz:0
[ 2775.121237] =====>rtl8192_set_chan()====ch:6
[ 2775.133114] rtl8192_SetWirelessMode(), wireless_mode:4, bEnableHT = 0
[ 2775.135684] Associated successfully
[ 2775.135688] normal associate
[ 2775.135696] Using G rates:108
[ 2775.135699] Successfully associated, ht not enabled(0, 0)
[ 2775.135703] ===>rtl8192se_link_change():ieee->iw_mode is 2
[ 2775.135708] rtl8192_update_cap(): WLAN_CAPABILITY_SHORT_PREAMBLE
Some of the disconnections are enough to trigger an error in the system
tray, however this does not show for every entry in dmesg.
I will continue to test and try to narrow down this bug
** Affects: ubuntu
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/773976
Title:
Realtek 8192_pci regularly disconnects after upgrade to 11.04
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