After some more testing with 3.14-rc8 I can confirm that the situation is just a tiny bit better than in the repository kernel: * associating to the cellphone accesspoint does not always work and the syslog shows several attempts until it works if it works * if the connection is there, it is unstable and sometimes disconnects with traffic * packet loss and ping times are bad (see belowresults for pinging my personal homepage (hosted in switzerland) via my cellphone accesspoint
pinging from the computer with the 3.14-rc8 kernel and the WN8200ND hardware: ping-8192cu.txt --- www.peterschueller.com ping statistics --- 28 packets transmitted, 28 received, 0% packet loss, time 27045ms rtt min/avg/max/mdev = 157.014/496.532/2018.405/510.937 ms, pipe 3 pinging from my laptop (centrino ultimate-n 6300 wifi card): --- www.peterschueller.com ping statistics --- 29 packets transmitted, 21 received, 27% packet loss, time 28101ms rtt min/avg/max/mdev = 367.968/867.568/4077.452/835.474 ms, pipe 5 So the average roundtrip is actually better with the 8192cu but the deviation is greater and the packet loss is 27% compared to 0%. Some more observations: * the syslog shows frequent powersave messages, even if there is no extra traffic happening. * if I provoke traffic by downloading a 1.2 MB file, the file is downloaded completely before syslog shows that it went out of powersave mode (although tail -f on the syslog file might not be the optimal way to do such a test) short syslog excerpt Mar 30 16:58:29 oldie kernel: [ 2553.436071] rtw_set_ps_mode(): Busy Traffic , Leave 802.11 power save.. Mar 30 16:58:29 oldie kernel: [ 2553.436182] rtl8192c_set_FwPwrMode_cmd(): Mode = 0, SmartPS = 0 Mar 30 16:58:32 oldie kernel: [ 2557.332718] rtw_set_ps_mode(): Enter 802.11 power save mode... Mar 30 16:58:32 oldie kernel: [ 2557.332726] rtl8192c_set_FwPwrMode_cmd(): Mode = 1, SmartPS = 2 Mar 30 16:58:50 oldie kernel: [ 2575.005351] rtw_set_ps_mode(): Busy Traffic , Leave 802.11 power save.. Mar 30 16:58:50 oldie kernel: [ 2575.005473] rtl8192c_set_FwPwrMode_cmd(): Mode = 0, SmartPS = 0 Mar 30 16:58:53 oldie kernel: [ 2577.449566] issue_nulldata(wlan0) to b0:c4:e7:2a:01:d9, ch:6, 3/3 in 1056 ms Mar 30 16:58:53 oldie kernel: [ 2577.449574] survey done event(15) band:0 for wlan0 Mar 30 16:58:54 oldie kernel: [ 2579.376663] rtw_set_ps_mode(): Enter 802.11 power save mode... Mar 30 16:58:54 oldie kernel: [ 2579.376672] rtl8192c_set_FwPwrMode_cmd(): Mode = 1, SmartPS = 2 Mar 30 16:58:54 oldie kernel: [ 2579.409536] OnAction_back Mar 30 16:58:54 oldie kernel: [ 2579.409556] OnAction_back, action=2 Mar 30 16:58:54 oldie kernel: [ 2579.409560] OnAction_back(): DELBA: 0(0) Mar 30 16:58:54 oldie kernel: [ 2579.413849] Drop duplicate management frame with seq_num = 825. Mar 30 16:58:54 oldie kernel: [ 2579.413868] Drop duplicate management frame with seq_num = 825. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1298802 Title: 2357:0100 USB Wifi TP-Link WN8200ND cannot associate to access points To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1298802/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
