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Hi,
I am trying to use the Linux kernel driver for the RTL8723E wifi card.
While the card works flawlessly in Windows, it is unusable under Linux. For
low-signal APs, such as in public places, the kernel continuously drops the
AP connection and reconnects. This brings the transfer rate almost to a
stop. I compiled the sources of the unofficial kernel driver distributed by
Realtek to get this card working.
My question to you: is there a threshold parameter in the driver source
code that I can play with to stop the driver from dropping AP connections
even though the signal is low?
I would really appreciate any suggestions as this problem is rendering the
wifi card unusable.
Here are my system specifics:
# uname -a
Linux cenlap 3.4-trunk-amd64 #1 SMP Tue Jun 26 17:23:03 UTC 2012 x86_64
GNU/Linux
It's a Debian (Testing level). From dmesg:
Linux version 3.4-trunk-amd64 (Debian 3.4.4-1~experimental.1) (
debian-kernel@xxxxxxxxxxxxxxxx) (gcc version 4.6.3 (Debian 4.6.3-1) ) #1
SMP Tue Jun 26 17:23:03 UTC 2012
# lspci -v -s 03:00.0
03:00.0 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 d000 [size=256]
Memory at f7900000 (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
Using driver rtl_92ce_92se_92de_8723ae_
linux_mac80211_0006.0514.2012
I did have to comment out IEEE80211_HW_BEACON_FILTER (line 320 in base.c)
to be able to compile your kernel driver for my 3.4 kernel, following the
description here:
http://askubuntu.com/questions/139632/wireless-card-realtek-rtl8723ae-bt-is-not-recognized
Here are the errors I'm getting on dmesg and I can see WPA_GUI continuously
reconnecting every few seconds:
[ 7316.486880] wlan0: Connection to AP 00:0a:06:05:01:53 lost.
[ 7316.487711] cfg80211: Calling CRDA to update world regulatory domain
[ 7317.519557] wlan0: authenticate with 00:0a:06:05:01:53
[ 7317.551189] wlan0: send auth to 00:0a:06:05:01:53 (try 1/3)
[ 7317.754273] wlan0: send auth to 00:0a:06:05:01:53 (try 2/3)
[ 7317.958152] wlan0: send auth to 00:0a:06:05:01:53 (try 3/3)
[ 7318.162085] wlan0: authentication with 00:0a:06:05:01:53 timed out
[ 7329.506332] wlan0: authenticate with 00:0a:06:05:01:97
[ 7329.519585] wlan0: send auth to 00:0a:06:05:01:97 (try 1/3)
[ 7329.521128] wlan0: authenticated
[ 7329.536739] wlan0: associate with 00:0a:06:05:01:97 (try 1/3)
[ 7329.538853] wlan0: RX AssocResp from 00:0a:06:05:01:97 (capab=0x421
status=0 aid=1)
[ 7329.538858] wlan0: associated
[ 7332.527325] wlan0: Connection to AP 00:0a:06:05:01:97 lost.
[ 7332.531547] cfg80211: Calling CRDA for country: US
Thanks,
Cengiz
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