LinuxQuestions.org - "iwlagn Microcode SW error detected" -- Ubuntu v9.04 (Jaunty or Mint-7)

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- - "iwlagn Microcode SW error detected" -- Ubuntu v9.04 (Jaunty or Mint-7) (https://www.linuxquestions.org/questions/linux-networking-3/iwlagn-microcode-sw-error-detected-ubuntu-v9-04-jaunty-or-mint-7-a-800841/)

"iwlagn Microcode SW error detected" -- Ubuntu v9.04 (Jaunty or Mint-7)

I'm getting messages in [b]/var/log/kern.log

Code:

Mar 29 11:09:39 XYZZY kernel: [12761.511290] iwlagn: Microcode SW error detected.  Restarting 0x82000000.

Mar 29 11:09:39 XYZZY kernel: [12761.549222] iwlagn: Can't stop Rx DMA.

Mar 29 11:09:39 XYZZY kernel: [12761.550377] iwlagn: MAC is in deep sleep!

Mar 29 11:09:39 XYZZY kernel: [12761.550420] iwlagn: No space for Tx

Mar 29 11:09:39 XYZZY kernel: [12761.550426] iwlagn: Error sending SENSITIVITY_CMD: enqueue_hcmd failed: -28

Mar 29 11:09:39 XYZZY kernel: [12761.550434] iwlagn: SENSITIVITY_CMD failed

At this point, nothing works to wake the network except a full reboot. If I try using dig I'm told "no server available". If I try ping myGatewayIP I'm told "no route to host." If the wifi mu-code crashed (1) I'd expect it something to re-load and re-start, and (2) it is reasonable that network everthing has stopped until that restart.

I have these modules:

Code:

sudo lsmod | grep iwl

[sudo] password for saint: *****

iwlagn                100228  0

iwlcore                93184  1 iwlagn

mac80211              217208  2 iwlagn,iwlcore

led_class              12036  2 iwlcore,thinkpad_acpi

cfg80211              38032  3 iwlagn,iwlcore,mac80211



sudo modinfo iwlagn | grep iwl

filename:      /lib/modules/2.6.28-11-generic/kernel/drivers/net/wireless/iwlwifi/iwlagn.ko

alias:          iwl4965

firmware:      iwlwifi-4965-2.ucode

firmware:      iwlwifi-5000-1.ucode

depends:        iwlcore,cfg80211,mac80211

My hardware is, in fact:

Code:

*-network

    description: Wireless interface

    product: PRO/Wireless 4965 AG or AGN [Kedron] Network Connection

    vendor: Intel Corporation

    physical id: 0

    bus info: pci@0000:03:00.0

    logical name: wmaster0

    version: 61

    serial: 00:1d:e0:89:6b:1f

    width: 64 bits

    clock: 33MHz

    capabilities: bus_master cap_list logical ethernet physical 

wireless 

    configuration: broadcast=yes driver=iwlagn ip=192.168.42.192 latency=0 module=iwlagn multicast=yes wireless=IEEE 802.11abgn

Thoroughly stumpled ("stumped" + "trampled")
~~~ 0;-Dan

Here's a similar tale of woe:

Quote:

http://ubuntuforums.org/showthread.php?t=1142917

These days I've tried the new Ubuntu 9.04, but I've found that my Intel PRO/Wireless 5100AGN card is not working with encryption. If I turn off the encryption on my AP, I'm able to establish a wireless connection
...

I see that this error seems quite popular with intel wireless cards.
...

I am surprised because more than 3 months I was using Kubuntu 8,10 and all the time I've used my wifi with WPA-PSK encryption enabled and never had such kind of problem...

However, this might be a potential solution:

https://bugs.launchpad.net/linux/+bug/200509

Or perhaps this.

In in case, please see if a) disabling encryption makes a difference, and b) if either of these suggestions resolve the problem (*with* encryption ENABLED) Please let us know what happens!

Thanx in advance .. PSM