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Trying to figure out some ath9k problems.
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Joined: 05 Mar 2004
Posts: 766

PostPosted: Sun May 01, 2016 6:09 pm    Post subject: Trying to figure out some ath9k problems. Reply with quote

I am putting this here since this is not exactly a support request, but a question if anyone else is having this issue.
With the latest stable kernel 4.4.6 I will occasionally loose all dns stuff on the laptop. It is still is connected to the router but it acts as if i have no internet connection.

I am wondering if this change is the culprit.
commit 1ab2f1e2aab12c0fcdfa29ed00785563c45c1462
Author: Felix Fietkau <>
Date:   Thu Feb 18 19:49:18 2016 +0100

    mac80211: minstrel_ht: set default tx aggregation timeout to 0
    commit 7a36b930e6ed4702c866dc74a5ad07318a57c688 upstream.
    The value 5000 was put here with the addition of the timeout field to
    ieee80211_start_tx_ba_session. It was originally added in mac80211 to
    save resources for drivers like iwlwifi, which only supports a limited
    number of concurrent aggregation sessions.
    Since iwlwifi does not use minstrel_ht and other drivers don't need
    this, 0 is a better default - especially since there have been
    recent reports of aggregation setup related issues reproduced with
    ath9k. This should improve stability without causing any adverse
    Acked-by: Avery Pennarun <>
    Signed-off-by: Felix Fietkau <>
    Signed-off-by: Johannes Berg <>
    Signed-off-by: Greg Kroah-Hartman <>

I have this card.

2:00.0 Network controller: Qualcomm Atheros AR928X Wireless Network Adapter (PCI-Express) (rev 01)
   Subsystem: Foxconn International, Inc. T77H047.31 802.11bgn Wireless Half-size Mini PCIe Card [AR9283]
   Flags: bus master, fast devsel, latency 0, IRQ 19
   Memory at b3400000 (64-bit, non-prefetchable) [size=64K]
   Capabilities: [40] Power Management version 2
   Capabilities: [50] MSI: Enable- Count=1/1 Maskable- 64bit-
   Capabilities: [60] Express Legacy Endpoint, MSI 00
   Capabilities: [90] MSI-X: Enable- Count=1 Masked-
   Capabilities: [100] Advanced Error Reporting
   Capabilities: [140] Virtual Channel
   Capabilities: [160] Device Serial Number 00-00-00-00-00-00-00-00
   Kernel driver in use: ath9k
   Kernel modules: ath9k

with hardware encryption turned off.
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