Bug 787446

Summary: Wireless Dropout - Tx aggregation enabled on ra
Product: [Fedora] Fedora Reporter: Simon Sigre <simon.sigre>
Component: kernelAssignee: John W. Linville <linville>
Status: CLOSED CURRENTRELEASE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: unspecified    
Version: 16CC: dave.mcneill, gansalmon, itamar, jonathan, kernel-maint, madhu.chinakonda, mcelwainejim, mikeandmore
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2012-02-06 15:11:44 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Simon Sigre 2012-02-05 06:18:30 UTC 
After a period of time, the wireless simply stops functioning... NetworkManager 
thinks its still connected.. but no network traffic works.
After a period of time (if left) sometimes it reconnects at G-54Mbit speed.. vs 'N' at around 270Mbit

The following are observed in dmesg:

[  505.669220] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:04:ed:bb:c6:fd tid = 0
[  555.202192] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:04:ed:bb:c6:fd tid = 0
[  588.834218] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:04:ed:bb:c6:fd tid = 0
[  617.740773] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:04:ed:bb:c6:fd tid = 0
[  690.116581] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:04:ed:bb:c6:fd tid = 0
[  742.430541] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:04:ed:bb:c6:fd tid = 0
[  788.704026] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:04:ed:bb:c6:fd tid = 0
[  801.676020] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:04:ed:bb:c6:fd tid = 0
[  962.686813] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:04:ed:bb:c6:fd tid = 0
[ 1015.634260] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:04:ed:bb:c6:fd tid = 0
[ 1099.420837] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:04:ed:bb:c6:fd tid = 0
[ 1107.568703] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:04:ed:bb:c6:fd tid = 0
[ 1119.465765] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:04:ed:bb:c6:fd tid = 0
[ 1147.984058] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:04:ed:bb:c6:fd tid = 0
[ 1213.937449] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:04:ed:bb:c6:fd tid = 0
[ 1239.211977] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:04:ed:bb:c6:fd tid = 0
[ 1352.128153] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:04:ed:bb:c6:fd tid = 0
[ 1428.874172] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:04:ed:bb:c6:fd tid = 0
[ 1467.239910] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:04:ed:bb:c6:fd tid = 0
[ 1501.816674] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:04:ed:bb:c6:fd tid = 0
[ 1585.802417] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:04:ed:bb:c6:fd tid = 0
[ 1638.777505] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:04:ed:bb:c6:fd tid = 0
[ 1669.836635] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:04:ed:bb:c6:fd tid = 0
[ 1706.886181] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:04:ed:bb:c6:fd tid = 0
[ 1733.298790] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:04:ed:bb:c6:fd tid = 0





Kernel; Linux greenback.local 3.2.2-1.fc16.x86_64 #1 SMP Thu Jan 26 03:21:58 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux






Some details as to the wireless adapter;

[    5.214347] Intel(R) Wireless WiFi Link AGN driver for Linux, in-tree:
[    5.214441] iwlwifi 0000:03:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[    5.214496] iwlwifi 0000:03:00.0: setting latency timer to 64
[    5.214542] iwlwifi 0000:03:00.0: pci_resource_len = 0x00002000
[    5.214544] iwlwifi 0000:03:00.0: pci_resource_base = ffffc900058a0000
[    5.214545] iwlwifi 0000:03:00.0: HW Revision ID = 0x34
[    5.214830] iwlwifi 0000:03:00.0: irq 50 for MSI/MSI-X
[    5.214919] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEBUG disabled
[    5.214921] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEBUGFS disabled
[    5.214922] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEVICE_TRACING disabled
[    5.214924] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEVICE_TESTMODE disabled
[    5.214925] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_P2P disabled
[    5.214956] iwlwifi 0000:03:00.0: Detected Intel(R) Centrino(R) Advanced-N 6205 AGN, REV=0xB0
[    5.215034] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[    5.225137] iwlwifi 0000:03:00.0: device EEPROM VER=0x715, CALIB=0x6
[    5.225140] iwlwifi 0000:03:00.0: Device SKU: 0x1F0
[    5.225142] iwlwifi 0000:03:00.0: Valid Tx ant: 0x3, Valid Rx ant: 0x3
[    5.225166] iwlwifi 0000:03:00.0: Tunable channels: 13 802.11bg, 24 802.11a channels
[    5.241189] iwlwifi 0000:03:00.0: loaded firmware version 17.168.5.3 build 42301
[    9.282736] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[    9.282928] iwlwifi 0000:03:00.0: Radio type=0x1-0x2-0x0
[    9.565154] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[    9.565344] iwlwifi 0000:03:00.0: Radio type=0x1-0x2-0x0
[   45.937516] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:04:ed:bb:c6:fd tid = 6
Comment 1 Jim McElwaine 2012-02-05 17:32:10 UTC 
I have this problem too. I'm using Fedora 16 with all the latest updates. It seems to have stopped working properly in the last few days.
To get my connection backup I have to
systemctl restart NetworkManager.service 

/var/log/messages is full of lines like
Feb  5 07:45:17 localhost kernel: [ 7143.937635] iwlwifi 0000:06:00.0: Tx aggregation enabled on ra = 00:26:5a:cc:6a:5d tid = 0

It is an incredibly annoying problem

kernel-3.2.2-1.fc16.x86_64
Comment 2 Jim McElwaine 2012-02-05 23:24:04 UTC 
I think this is a duplicate of 785561

making a file
 /etc/modprobe.d/iwlwifi.conf with a single line
 like this:
options iwlwifi 11n_disable=1
is a temporary fix

this line disables 11n and leaves things in g

There is also a thread from November 2011 on the kernel mailing list so why did this end up released when it's disastrous for anyone with this wifi card ?
Comment 3 Jim McElwaine 2012-02-05 23:29:32 UTC 
see this discussion
http://lkml.indiana.edu/hypermail/linux/kernel/1111.3/00007.html
Comment 4 Mike Qin 2012-02-06 01:59:38 UTC 
confirm this bug on kernel-3.2.2-1.fc16.x86_64.
Comment 5 Jim McElwaine 2012-02-06 02:06:58 UTC 
yes the problem is with kernel-3.2.2-1.fc16.x86_64
Comment 6 Simon Sigre 2012-02-06 09:47:39 UTC 
An update released just then into 'updates' reports to fix this, update includes kernel-3.2.3-2.fc16.x86_64
Comment 7 Simon Sigre 2012-02-06 09:49:47 UTC 
Currently connected back at 243 Mb/s ... this bug is VERY reminiscent of something around this time last year that had the same work around  'options iwlwifi 11n_disable=1'
Comment 8 John W. Linville 2012-02-06 15:11:44 UTC 
kernel-3.2.3-2.fc16 should address this issue.
Comment 9 Jim McElwaine 2012-02-06 16:29:47 UTC 
kernel-3.2.3-2.fc16.x86_64
appears to fix the problem
thank you