Intel 9260/9462/9560 can't connect to 5GHz AP

Bug #1736639 reported by AceLan Kao on 2017-12-06
8
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux (Ubuntu)
Undecided
AceLan Kao
Xenial
Undecided
Unassigned
linux-oem (Ubuntu)
Undecided
Unassigned
Xenial
Undecided
Unassigned

Bug Description

With 1009 oem(v4.13) kernel and latest linux-firmware[1], it connect to 2.4GHz APs without any issues.
But it fails to connect 5GHz APs.

It stucks when I select a 5GHz network AP, and after timeout it
connects to another configured 2.4GHz AP.
[ 512.404139] wlp0s20f3: authenticate with 2c:36:f8:fa:ec:00
[ 512.410781] wlp0s20f3: send auth to 2c:36:f8:fa:ec:00 (try 1/3)
[ 512.449561] wlp0s20f3: authenticated
[ 512.450625] wlp0s20f3: associate with 2c:36:f8:fa:ec:00 (try 1/3)
[ 512.452010] wlp0s20f3: RX AssocResp from 2c:36:f8:fa:ec:00
(capab=0x111 status=0 aid=8)
[ 512.454501] wlp0s20f3: associated
[ 512.542439] wlp0s20f3: Limiting TX power to 27 (30 - 3) dBm as
advertised by 2c:36:f8:fa:ec:00
[ 557.685247] wlp0s20f3: deauthenticating from 2c:36:f8:fa:ec:00 by
local choice (Reason: 3=DEAUTH_LEAVING)
[ 557.695875] wlp0s20f3: failed to remove key (1, ff:ff:ff:ff:ff:ff)
from hardware (-22)

1. c4276b6 (tag: refs/tags/iwlwifi-fw-2017-11-03) iwlwifi: add firmware version 33 for new 9000 series

AceLan Kao (acelankao) wrote :

The 2 patches can be found here, they have CC'ed stable, so they will be in artful kernel someday.

git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-fixes.git

Author: Sara Sharon <email address hidden>
Date: Mon Feb 8 23:30:47 2016 +0200

    iwlwifi: mvm: mark MIC stripped MPDUs

    When RADA is active, the hardware decrypts the packets and strips off
    the MIC as it is useless after decryption. Indicate that to mac80211.

    Cc: <email address hidden> # 4.13+
    [this is needed for the 9000-series HW to work properly]
    Signed-off-by: Sara Sharon <email address hidden>
    Signed-off-by: Luca Coelho <email address hidden>

commit 9d0fc5a50a0548f8e5d61243e5e5f26d5c405aef
Author: David Spinadel <email address hidden>
Date: Mon Nov 21 17:01:25 2016 +0200

    iwlwifi: mvm: enable RX offloading with TKIP and WEP

    Set the flag that indicates that ICV was stripped on if
    this option was enabled in the HW.

    Cc: <email address hidden> # 4.13+
    [this is needed for the 9000-series HW to work properly]
    Signed-off-by: David Spinadel <email address hidden>
    Signed-off-by: Luca Coelho <email address hidden>

Timo Aaltonen (tjaalton) on 2017-12-14
Changed in linux-oem (Ubuntu):
status: New → Invalid
Changed in linux (Ubuntu Xenial):
status: New → Invalid
Changed in linux-oem (Ubuntu Xenial):
status: New → Fix Committed
AceLan Kao (acelankao) on 2018-01-16
Changed in linux (Ubuntu):
status: In Progress → Fix Released
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