Public bug reported:
With the latest raring kernel image (linux-signed-image-3.8.0-18-generic) my
wireless connection becomes very slow after a few minutes (ping to my AP
increases from < 1ms to ~ 900ms).
Kernel 3.8.0.17.27 is still fine, other wireless devices continue to work fine
if the problem occurs.
HW is AR9485 (ath9k) 1x1 802.11n in Asus G75VX laptop, AP is Asus RT-AC66U.
# apt-cache policy linux-signed-image-3.8.0-18-generic
linux-signed-image-3.8.0-18-generic:
Installed: 3.8.0-18.28
Candidate: 3.8.0-18.28
Version table:
*** 3.8.0-18.28 0
500 http://nl.archive.ubuntu.com/ubuntu/ raring-proposed/main amd64
Packages
100 /var/lib/dpkg/status
03:00.0 Network controller: Atheros Communications Inc. AR9485 Wireless Network
Adapter (rev 01)
Subsystem: AzureWave Device 2c97
Flags: bus master, fast devsel, latency 0, IRQ 17
Memory at f5200000 (64-bit, non-prefetchable) [size=512K]
Expansion ROM at f5280000 [disabled] [size=64K]
Capabilities: [40] Power Management version 2
Capabilities: [50] MSI: Enable- Count=1/4 Maskable+ 64bit+
Capabilities: [70] Express Endpoint, MSI 00
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
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Incomplete
** Tags: raring
** Attachment added: "complete lspci output"
https://bugs.launchpad.net/bugs/1168819/+attachment/3643727/+files/lspci-vnvn.log
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https://bugs.launchpad.net/bugs/1168819
Title:
Slow wireless with AR9485 ath9k
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