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#1 2014-01-27 16:09:10

silenceleaf
Member
Registered: 2013-03-16
Posts: 38

Intel AC7260 wireless hardware interrupt randomly

Hi,

My Intel AC7260 wireless hardware have someting wrong. It works fine until recently.

The bug occurs randomly, may be several hours. When that bug occurs, I have to reconnect my wifi or reboot my laptop to bring network back.

I check my kernel log, the most useful information like this:

2014-01-27 10:44:07 iwlwifi 0000    3:00.0: Error sending ADD_STA: time out after 2000ms.
2014-01-27 10:44:07 iwlwifi 0000    3:00.0: Current CMD queue read_ptr 125 write_ptr 126
2014-01-27 10:44:07 wlp3s0  HW problem - can not stop rx aggregation for 00:24:a5:d7:a1:d4 tid 1
2014-01-27 10:45:42 iwlwifi 0000    3:00.0: Error sending SCAN_REQUEST_CMD: time out after 2000ms.
2014-01-27 10:45:42 iwlwifi 0000    3:00.0: Current CMD queue read_ptr 125 write_ptr 127
2014-01-27 10:45:42 iwlwifi 0000    3:00.0: Scan failed! status 0x1 ret -110
2014-01-27 10:47:42 iwlwifi 0000    3:00.0: Error sending SCAN_REQUEST_CMD: time out after 2000ms.
2014-01-27 10:47:42 iwlwifi 0000    3:00.0: Current CMD queue read_ptr 125 write_ptr 128
2014-01-27 10:47:42 iwlwifi 0000    3:00.0: Scan failed! status 0x1 ret -110

I find a very similar problem as mine in this: http://www.spinics.net/lists/linux-wire … 14360.html

and this: https://bbs.archlinux.org/viewtopic.php?id=172184

My kernel is 3.12.9  x86_64


-------30 Jan EST Edit------------------------

after tracking the email subscrib, I find that this problem is caused by PCIe power management, and may be a kernel fix is developing.

the email subscrib is here
http://www.spinics.net/lists/linux-wire … 16482.html

Last edited by silenceleaf (2014-01-30 18:13:39)

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#2 2014-01-27 16:16:25

silenceleaf
Member
Registered: 2013-03-16
Posts: 38

Re: Intel AC7260 wireless hardware interrupt randomly

lspci show this hardware like this:

03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 73)

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#3 2014-01-28 01:29:53

silenceleaf
Member
Registered: 2013-03-16
Posts: 38

Re: Intel AC7260 wireless hardware interrupt randomly

This bug almost make crazy ....

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#4 2014-01-28 18:29:18

silenceleaf
Member
Registered: 2013-03-16
Posts: 38

Re: Intel AC7260 wireless hardware interrupt randomly

I find in 5GHz, it worked fine.

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#5 2014-01-30 18:29:41

silenceleaf
Member
Registered: 2013-03-16
Posts: 38

Re: Intel AC7260 wireless hardware interrupt randomly

I just update post, the kernel patch is here:

https://bugzilla.kernel.org/show_bug.cgi?id=64541

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