2013-03-17 19:03:09

by Antonio Maretzek

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Subject: rtl8723ae losing IP connectivity (3.8.2 + 3.9-rc2)

(please CC me)
I have a "rtl8723ae" losing connectivity.
I can reproduce that. So, if somebody wants to send me patches, I think
I can test them.
(this machine is for Win7, not Linux, and I have to hand it out soon)
Toshiba Sat. Pro C850-1F5, PN PSCBXE-01800CEP,
lspci: 02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. Device [10ec:8723]
Kernel: tested with 3.8.2 + 3.9-rc2
Don't know for sure if they behave excatly the same.
Firmware: rtl8723fw_B blob-993c7f6ecea30c5bae914c4c22152735d8eb0d61 (20130312)

Behaviour depends on power-on path. Power-on -> Win7 -> reboot -> Linux
results in a different behaviour from Power-on -> Linux.

(Power-on -> Linux)
- DHCP gets done, some ping to the laptop make it through.
- Then, pings to the laptop get lost, may start working again, or not.
- Transferrates are about 500 kB/s, AP at about 1 m.
- If pings are comming back and ping is stopped, restarting ping
will not show pings comming back immediatly (see below).
- ping response to the laptop is ok when a ping from the laptop is active.
(started from a script in inittab)
(Power-on -> Win7 -> reboot -> Linux)
- pings don't fail (at least for 3.9-rc2) initially.
- Transferrates are about 250 kB/s

Hope this was useful...

Some additional info:

(Power-on -> Linux, 3.9-rc2)
PING ( 56(84) bytes of data.
64 bytes from icmp_req=1 ttl=64 time=194266 ms
64 bytes from icmp_req=2 ttl=64 time=193266 ms
64 bytes from icmp_req=3 ttl=64 time=192266 ms
64 bytes from icmp_req=4 ttl=64 time=191267 ms
64 bytes from icmp_req=5 ttl=64 time=190268 ms
64 bytes from icmp_req=6 ttl=64 time=189269 ms
64 bytes from icmp_req=7 ttl=64 time=188272 ms
64 bytes from icmp_req=8 ttl=64 time=187275 ms
64 bytes from icmp_req=193 ttl=64 time=2276 ms
64 bytes from icmp_req=194 ttl=64 time=1277 ms
64 bytes from icmp_req=195 ttl=64 time=279 ms
64 bytes from icmp_req=196 ttl=64 time=2.15 ms
64 bytes from icmp_req=197 ttl=64 time=1.67 ms
64 bytes from icmp_req=198 ttl=64 time=3.58 ms
64 bytes from icmp_req=199 ttl=64 time=1.59 ms
64 bytes from icmp_req=200 ttl=64 time=1.41 ms
--- ping statistics ---
200 packets transmitted, 16 received, 92% packet loss, time 199005ms
rtt min/avg/max/mdev = 1.418/95624.968/194266.838/95159.788 ms, pipe 195

Regards, Antonio (Maretzek)