On 10/31/2012 11:54 PM, Akira Nonaka wrote: > Dear all, > > I have a problem RTl8723 wifi connection. I can connect the access point > fine but exactly 10 seconds later, the connection will be lost. This is > 100% reproducible. Here is the "iw event" log. > > --- > 1351707196.317590: wlan0 (phy #0): scan started > 1351707197.302943: wlan0 (phy #0): scan finished: 2412 2417 2422 2427 > 2432 2437 2442 2447 2452 2457 2462 2467 2472, "" > 1351707210.124514: wlan0 (phy #0): scan started > 1351707211.109857: wlan0 (phy #0): scan finished: 2412 2417 2422 2427 > 2432 2437 2442 2447 2452 2457 2462 2467 2472, "" > 1351707212.091111: wlan0 (phy #0): scan started > 1351707213.075847: wlan0 (phy #0): scan finished: 2412 2417 2422 2427 > 2432 2437 2442 2447 2452 2457 2462 2467 2472, "WHRG300N" > 1351707213.125596: wlan0: new station 00:24:a5:b4:d6:28 > 1351707213.128086: wlan0 (phy #0): auth 00:24:a5:b4:d6:28 -> > 74:e5:43:d3:83:1f status: 0: Successful [frame: b0 00 3a 01 74 e5 43 d3 > 83 1f 00 24 a5 b4 d6 28 00 24 a5 b4 d6 28 40 02 00 00 02 00 00 00] > 1351707213.190419: wlan0 (phy #0): assoc 00:24:a5:b4:d6:28 -> > 74:e5:43:d3:83:1f status: 0: Successful ... > 1351707213.190577: wlan0 (phy #0): connected to 00:24:a5:b4:d6:28 > 1351707222.948847: wlan0: unknown event 20 > 1351707222.965529: wlan0 (phy #0): deauth 74:e5:43:d3:83:1f -> > 00:24:a5:b4:d6:28 reason 4: Disassociated due to inactivity [frame: c0 > 00 00 00 00 24 a5 b4 d6 28 74 e5 43 d3 83 1f 00 24 a5 b4 d6 28 00 00 04 00] > 1351707222.965603: wlan0 (phy #0): disconnected (local request) > 1351707222.979348: phy #0: regulatory domain change: set to world > roaming by the wireless core upon initialization request > 1351707222.982223: regulatory domain change: set to JP by a user request > --- > > Does anyone have the same problem? Can someone tell me what is "wlan0: > unknown event 20"? I suspect this is the cause of the disconnection. I > am no wifi expert. Where should I take look at in the source code? > > I am using Fedora 16 kernel 3.4.9 with some minor patches and Realktek > driver provided from my vendor, > "8723AE_linux_WiFimac80211_0007.0809.2012.tar.gz". > > And here is lspci info. > > 02:00.0 Network controller: Realtek Semiconductor Co., Ltd. Device 8723 > Subsystem: Realtek Semiconductor Co., Ltd. Device 0726 > Flags: bus master, fast devsel, latency 0, IRQ 18 > I/O ports at e000 [size=256] > Memory at f7b00000 (64-bit, non-prefetchable) [size=16K] > Capabilities: [40] Power Management version 3 > Capabilities: [50] MSI: Enable- Count=1/1 Maskable- 64bit+ > Capabilities: [70] Express Endpoint, MSI 00 > Capabilities: [100] Advanced Error Reporting > Capabilities: [140] Virtual Channel > Capabilities: [160] Device Serial Number 01-23-87-fe-ff-4c-e0-00 > Kernel driver in use: rtl8723e > Kernel modules: rtl8723e > > I have sent the same question to the Realtek support but I also > appreciate your help. According to the table at http://etutorials.org/Networking/Wireless+lan+security/Chapter+4.+WLAN+Fundamentals/Basic+Choreography/, event 20 is "Invalid AKMP". That acronym stands for Active Key Management Protocol. I have some questions: (1) What version of the vendor driver are you using? (2) Are the memset errors fixed? There are a number of calls where args 2 and 3 are reversed. (3) Can you build your own kernel? If so, check http://www'lwfinger.com/realtek_drivers/rtl8723ae_master_patch. That will patch a 3.4 kernel to include the driver rtl8723ae that has been submitted for inclusion in kernel 3.8. Larry -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
