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
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
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 ?
see this discussion http://lkml.indiana.edu/hypermail/linux/kernel/1111.3/00007.html
confirm this bug on kernel-3.2.2-1.fc16.x86_64.
yes the problem is with kernel-3.2.2-1.fc16.x86_64
An update released just then into 'updates' reports to fix this, update includes kernel-3.2.3-2.fc16.x86_64
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'
kernel-3.2.3-2.fc16 should address this issue.
kernel-3.2.3-2.fc16.x86_64 appears to fix the problem thank you