11.10 fresh install, wireless is very slow.

[rkrizan]

Completed a fresh install of Ubuntu 11.10, and now the wireless is extremely slow. I cannot get speeds over 10kbps, if that at all. However, my other laptop can download the same file from the same location at nearly 2Mbps. Any suggestions?

[rkrizan]

The laptop is a Dell E1505:

root@pharaoh:~# lspci|grep Network
0b:00.0 Network controller: Intel Corporation PRO/Wireless 4965 AG or AGN [Kedron] Network Connection (rev 61)
root@pharaoh:~# lsmod|grep iwl
iwl4965 123423 0
iwl_legacy 71673 1 iwl4965
mac80211 271515 2 iwl4965,iwl_legacy
cfg80211 169178 3 iwl4965,iwl_legacy,mac80211
root@pharaoh:~# dmesg|grep iwl
[ 17.114080] iwl4965: Intel(R) Wireless WiFi 4965 driver for Linux, in-tree:
[ 17.114083] iwl4965: Copyright(c) 2003-2011 Intel Corporation
[ 17.114171] iwl4965 0000:0b:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[ 17.114202] iwl4965 0000:0b:00.0: setting latency timer to 64
[ 17.114253] iwl4965 0000:0b:00.0: Detected Intel(R) Wireless WiFi Link 4965AGN, REV=0x4
[ 17.156665] iwl4965 0000:0b:00.0: device EEPROM VER=0x36, CALIB=0x5
[ 17.157681] iwl4965 0000:0b:00.0: Tunable channels: 11 802.11bg, 13 802.11a channels
[ 17.157836] iwl4965 0000:0b:00.0: irq 43 for MSI/MSI-X
[ 17.175236] iwl4965 0000:0b:00.0: loaded firmware version 228.61.2.24
[ 17.424261] ieee80211 phy0: Selected rate control algorithm 'iwl-4965-rs'
[ 103.746511] iwl4965 0000:0b:00.0: Aggregation not enabled for tid 0 because load = 0
[ 151.655683] iwl4965 0000:0b:00.0: iwl4965_tx_agg_start on ra = 00:24:b2:17:a3:ba tid = 0
[ 169.864892] iwl4965 0000:0b:00.0: Aggregation not enabled for tid 1 because load = 10
[ 1440.676102] iwl4965 0000:0b:00.0: iwl4965_tx_agg_start on ra = 00:24:b2:17:a3:ba tid = 1
[ 2281.534724] iwl4965 0000:0b:00.0: Error sending TX power (-5)
[ 2281.550232] iwl4965 0000:0b:00.0: Attempting to modify non-existing station 31
[ 2281.552523] iwl4965 0000:0b:00.0: Attempting to modify non-existing station 0
[ 2281.570436] iwl4965 0000:0b:00.0: Error sending TX power (-5)
[ 2281.613246] iwl4965 0000:0b:00.0: PCI INT A disabled
[ 2315.833840] iwl4965: Intel(R) Wireless WiFi 4965 driver for Linux, in-tree:
[ 2315.833843] iwl4965: Copyright(c) 2003-2011 Intel Corporation
[ 2315.833942] iwl4965 0000:0b:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[ 2315.833988] iwl4965 0000:0b:00.0: setting latency timer to 64
[ 2315.834217] iwl4965 0000:0b:00.0: Detected Intel(R) Wireless WiFi Link 4965AGN, REV=0x4
[ 2315.876711] iwl4965 0000:0b:00.0: device EEPROM VER=0x36, CALIB=0x5
[ 2315.876799] iwl4965 0000:0b:00.0: Tunable channels: 11 802.11bg, 13 802.11a channels
[ 2315.876934] iwl4965 0000:0b:00.0: irq 43 for MSI/MSI-X
[ 2315.880479] iwl4965 0000:0b:00.0: loaded firmware version 228.61.2.24
[ 2315.882659] ieee80211 phy1: Selected rate control algorithm 'iwl-4965-rs'
[ 2333.616126] iwl4965 0000:0b:00.0: iwl4965_tx_agg_start on ra = 00:24:b2:17:a3:ba tid = 0
[ 2566.711444] iwl4965 0000:0b:00.0: Aggregation not enabled for tid 0 because load = 2
[ 2703.136109] iwl4965 0000:0b:00.0: iwl4965_tx_agg_start on ra = 00:24:b2:17:a3:ba tid = 0
[ 2706.725598] iwl4965 0000:0b:00.0: iwl4965_tx_agg_start on ra = 00:24:b2:17:a3:ba tid = 1
[ 2963.141047] iwl4965 0000:0b:00.0: Error sending TX power (-5)
[ 2963.158411] iwl4965 0000:0b:00.0: Attempting to modify non-existing station 31
[ 2963.160706] iwl4965 0000:0b:00.0: Attempting to modify non-existing station 0
[ 2963.170462] iwl4965 0000:0b:00.0: Error sending TX power (-5)
[ 2963.222157] iwl4965 0000:0b:00.0: PCI INT A disabled
[ 2970.877086] iwlagn: Intel(R) Wireless WiFi Link AGN driver for Linux, in-tree:
[ 2970.877090] iwlagn: Copyright(c) 2003-2011 Intel Corporation
[ 3003.955910] iwl4965: Intel(R) Wireless WiFi 4965 driver for Linux, in-tree:
[ 3003.955917] iwl4965: Copyright(c) 2003-2011 Intel Corporation
[ 3003.956079] iwl4965 0000:0b:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[ 3003.956147] iwl4965 0000:0b:00.0: setting latency timer to 64
[ 3003.956579] iwl4965 0000:0b:00.0: Detected Intel(R) Wireless WiFi Link 4965AGN, REV=0x4
[ 3003.999627] iwl4965 0000:0b:00.0: device EEPROM VER=0x36, CALIB=0x5
[ 3003.999677] iwl4965 0000:0b:00.0: Tunable channels: 11 802.11bg, 13 802.11a channels
[ 3003.999918] iwl4965 0000:0b:00.0: irq 43 for MSI/MSI-X
[ 3004.003128] iwl4965 0000:0b:00.0: loaded firmware version 228.61.2.24
[ 3004.003528] ieee80211 phy2: Selected rate control algorithm 'iwl-4965-rs'
[ 3032.756120] iwl4965 0000:0b:00.0: iwl4965_tx_agg_start on ra = 00:24:b2:17:a3:ba tid = 0
[ 3040.565656] iwl4965 0000:0b:00.0: iwl4965_tx_agg_start on ra = 00:24:b2:17:a3:ba tid = 1
[ 3113.092614] iwl4965 0000:0b:00.0: Error sending TX power (-5)
[ 3113.110243] iwl4965 0000:0b:00.0: Attempting to modify non-existing station 31
[ 3113.112521] iwl4965 0000:0b:00.0: Attempting to modify non-existing station 0
[ 3113.126474] iwl4965 0000:0b:00.0: Error sending TX power (-5)
[ 3113.177662] iwl4965 0000:0b:00.0: PCI INT A disabled
[ 3134.786520] iwl4965: Intel(R) Wireless WiFi 4965 driver for Linux, in-tree:
[ 3134.786523] iwl4965: Copyright(c) 2003-2011 Intel Corporation
[ 3134.786616] iwl4965 0000:0b:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[ 3134.786662] iwl4965 0000:0b:00.0: setting latency timer to 64
[ 3134.786713] iwl4965 0000:0b:00.0: Detected Intel(R) Wireless WiFi Link 4965AGN, REV=0x4
[ 3134.829377] iwl4965 0000:0b:00.0: device EEPROM VER=0x36, CALIB=0x5
[ 3134.829406] iwl4965 0000:0b:00.0: Tunable channels: 11 802.11bg, 13 802.11a channels
[ 3134.829548] iwl4965 0000:0b:00.0: irq 43 for MSI/MSI-X
[ 3134.832960] iwl4965 0000:0b:00.0: loaded firmware version 228.61.2.24
[ 3134.833442] ieee80211 phy3: Selected rate control algorithm 'iwl-4965-rs'
[ 3152.136140] iwl4965 0000:0b:00.0: iwl4965_tx_agg_start on ra = 00:24:b2:17:a3:ba tid = 0
[ 3649.791751] iwl4965 0000:0b:00.0: Aggregation not enabled for tid 1 because load = 0
root@pharaoh:~#

[Flashman2003]

Same problem here with a vaio fz-21s

Very annoying (beside having to use unity)

[majed]

Same problem here on Lenovo Y430.. connecting the ethernet cable, speed is fine but wireless is SO slow!!!

All was fine when i was using 11.04 this morning but not now with 11.10

[majed]

WORKAROUND:

I disabled IPv6 as per http://www.unixmen.com/linux-tutoria...-natty-narwhal

Works fine now

I hope the issue will be fixed before we have to use IPv6!

[Flashman2003]

Same problem on vaio fz-21s. Disabling IPv6 does not work. And I need IPv6 anyway.

Ubuntu is using the iwl4965 driver and I can barely open a page. 56k flashback

Wifi works fine on windows.

I wonder if the problem is that i use wifi n and not b. What do you guys use?

[rkrizan]

That didn't work for me.

[Airward]

WORKAROUND:

I disabled IPv6 as per http://www.unixmen.com/linux-tutoria...-natty-narwhal

Works fine now

I hope the issue will be fixed before we have to use IPv6!

It seems, that my connection got even slower after this...