Wlan MAC in deep sleep. Please help debug

Hi,
I have begun experiencing a most distrubing error with my wlan0 recently (perhaps within the last week; at the most 14 days). My wlan0 stops working and disconnect entirely from the system for some to me unknown reason.
Here is a bit from my /var/log/errors.log:
Mar 21 20:08:29 localhost kernel: [ 7479.211040] iwlwifi 0000:03:00.0: MAC is in deep sleep!. CSR_GP_CNTRL = 0xFFFFFFFF
Mar 21 20:08:31 localhost kernel: [ 7481.321124] iwlwifi 0000:03:00.0: Error sending REPLY_ADD_STA: time out after 2000ms.
Mar 21 20:08:31 localhost kernel: [ 7481.321129] iwlwifi 0000:03:00.0: Current CMD queue read_ptr 212 write_ptr 216
Mar 21 20:08:33 localhost kernel: [ 7483.321134] iwlwifi 0000:03:00.0: Error sending REPLY_ADD_STA: time out after 2000ms.
Mar 21 20:08:33 localhost kernel: [ 7483.321144] iwlwifi 0000:03:00.0: Current CMD queue read_ptr 212 write_ptr 219
Mar 21 20:08:35 localhost kernel: [ 7485.321132] iwlwifi 0000:03:00.0: Error sending REPLY_QOS_PARAM: time out after 2000ms.
Mar 21 20:08:35 localhost kernel: [ 7485.321142] iwlwifi 0000:03:00.0: Current CMD queue read_ptr 212 write_ptr 222
Mar 21 20:08:35 localhost kernel: [ 7485.321149] iwlwifi 0000:03:00.0: Failed to update QoS
Mar 21 20:08:37 localhost kernel: [ 7487.321168] iwlwifi 0000:03:00.0: Error sending REPLY_RXON: time out after 2000ms.
Mar 21 20:08:37 localhost kernel: [ 7487.321178] iwlwifi 0000:03:00.0: Current CMD queue read_ptr 212 write_ptr 225
Mar 21 20:08:37 localhost kernel: [ 7487.321186] iwlwifi 0000:03:00.0: Error clearing ASSOC_MSK on BSS (-110)
[Repeated x times]
Mar 21 20:08:51 localhost kernel: [ 7501.345062] iwlwifi 0000:03:00.0: No space in command queue
Mar 21 20:08:51 localhost kernel: [ 7501.345070] iwlwifi 0000:03:00.0: Restarting adapter queue is full
Mar 21 20:08:51 localhost kernel: [ 7501.345082] iwlwifi 0000:03:00.0: Error sending REPLY_ADD_STA: enqueue_hcmd failed: -28
Mar 21 20:08:51 localhost kernel: [ 7501.345094] ieee80211 phy0: failed to remove key (1, ff:ff:ff:ff:ff:ff) from hardware (-28)
Mar 21 20:08:52 localhost kernel: [ 7501.361358] iwlwifi 0000:03:00.0: MAC is in deep sleep!. CSR_GP_CNTRL = 0xFFFFFFFF
[Repeated y times]
Mar 21 20:08:57 localhost kernel: [ 7507.418156] iwlwifi 0000:03:00.0: Could not load the INST uCode section
Mar 21 20:08:57 localhost kernel: [ 7507.418169] iwlwifi 0000:03:00.0: Failed to start RT ucode: -110
I have no idea what causes this and I do not know what it indicates. In particular I do not know if this is a software failure or (worse) a hardware failure. I have been downgraded by kernel and linux-firmware, but it does not seem to have solve the issue.
Does anybody know (i) what might have caused this? Or (ii) how to diagnose it further?
My system is a Thinkpad X200s with Intel Wifi. Here is output from dmesg
$ dmesg | grep -i wifi
[ 8.390471] Intel(R) Wireless WiFi Link AGN driver for Linux, in-tree:
[ 8.390525] iwlwifi 0000:03:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[ 8.390535] iwlwifi 0000:03:00.0: setting latency timer to 64
[ 8.390574] iwlwifi 0000:03:00.0: pci_resource_len = 0x00002000
[ 8.390576] iwlwifi 0000:03:00.0: pci_resource_base = ffffc900050fc000
[ 8.390579] iwlwifi 0000:03:00.0: HW Revision ID = 0x0
[ 8.390662] iwlwifi 0000:03:00.0: irq 46 for MSI/MSI-X
[ 8.390705] iwlwifi 0000:03:00.0: Detected Intel(R) Ultimate N WiFi Link 5300 AGN, REV=0x24
[ 8.390762] iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S
[ 8.410097] iwlwifi 0000:03:00.0: device EEPROM VER=0x11e, CALIB=0x4
[ 8.410100] iwlwifi 0000:03:00.0: Device SKU: 0Xf0
[ 8.410109] iwlwifi 0000:03:00.0: Tunable channels: 13 802.11bg, 24 802.11a channels
[ 8.432477] iwlwifi 0000:03:00.0: loaded firmware version 8.83.5.1 build 33692
[ 17.569927] iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S
[ 17.570357] iwlwifi 0000:03:00.0: Radio type=0x0-0x2-0x0
[ 17.725860] iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S
[ 17.726286] iwlwifi 0000:03:00.0: Radio type=0x0-0x2-0x0
Thanks in advance,
Rasmus

Some searching around lead me to this (long thread), which suggests this might be an aspm related bug/issue.
Just for the sake of testing, could you try if the issue also occurs if you disable aspm (add "pcie_aspm=off" to your kernel line in your bootloader config)?
Last edited by Gcool (2012-03-22 06:56:15)

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