From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?ISO-8859-1?Q?Torquil_Macdonald_S=F8rensen?= Date: Tue, 17 Aug 2010 18:10:33 +0200 Subject: [ath9k-devel] AR9285: Possible intermittent connection drop-outs Message-ID: <4C6AB479.2010603@gmail.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: ath9k-devel@lists.ath9k.org Hi guys! Essential, I'd like recommendations as to which ath9k debugging options I would want to use to effectively diagnose the following problem: I'm having some problems with my AR9285 based wireless card on an Asus X5DID laptop, using Linux 2.6.35.2 on Debian Sid. I'm connecting to a D-Link DIR-615 wireless router with the newest firmware. The problem is: sometimes, even though Network Manager displays a good connection strength, I loose communication with the router and therefore also the internet. In this state, which is temporary, I cannot ping the router. Typical scenario: While I am browsing, suddenly Firefox is no longer able to receive web pages. I typically try to ping the router at 192.168.0.1, but get no reply or very slow replies and many lost pings. I have a sneaking suspicion that my pinging efforts are able to "wake" the connection up to some degree, since often times web pages are able to load just after I start to ping. The problem fixes itself, usually after a few minutes. But the problem will come and go quite randomly. Network Manager never notices any of this. It happily displays a good connection all the time. Most of the time everything works fine. I'm quite certain that wireless in the Windows 7 OS on the same laptop works flawlessly, so its not a hardware or router problem. The other guy here uses Windows XP with a USB wireless card and never has similar problems. I have recompiled Linux to get some debugging going, but there are lots of debug options and some of them result in a massive amount of information being logged. So I'd like to get some recommendation as to which debugging option I should try first, out of these: http://wireless.kernel.org/en/users/Drivers/ath9k/debug The settings on the router are: Enable auto channel selection: on Transmission rate: Best (auto) WMM Enable: on (wireless QoS) Security mode: WPA/WPA2 Wireless Security (enhanced) Cipher type: AUTO (TKIP/AES) PSK/EAP: PSK Network Key: ******** (hidden) Beacon interval: 100ms RTS threshold: 2346 Fragmentation: 2346 DTIM interval: 1 Preamble type: Short CTS mode: Auto Wireless mode: 802.11 Mixed (g/b) From 'lspci': 04:00.0 Network controller: Atheros Communications Inc. AR9285 Wireless Network Adapter (PCI-Express) (rev 01)