Wireless link unstable (BCM4331)
Hong Xu
hong at topbug.net
Thu Jan 1 14:04:41 PST 2015
Hi,
I'm using b43 driver with my BCM4331 chip, but the connection is very unstable -- the ping time to
the router range from 1ms to a few thousand ms.
It happens randomly. There is no definite way to reproduce it.
Here are some info of the wlan configuration copied from NetworkManager system-connection files.
[connection]
type=wifi
[wifi]
mode=infrastructure
security=802-11-wireless-security
[wifi-security]
key-mgmt=wpa-psk
[ipv4]
method=auto
[ipv6]
method=auto
ip6-privacy=2
I also tried to switch to different channels on the router settings, but not helpful. Other wireless
devices have no stability problem when connecting to this router, but I also haven't observed
another router which this laptop with b43 has problem with.
Here are some system information.
$ uname -a
Linux hong-MacBook 3.18.1-3-ck #1 SMP PREEMPT Mon Dec 22 14:40:44 EST 2014 x86_64 GNU/Linux
# lspci -vvn | grep 43 -A7
04:00.0 0280: 14e4:4331 (rev 02)
Subsystem: 106b:00ef
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 256 bytes
Interrupt: pin A routed to IRQ 17
Region 0: Memory at c1900000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [40] Power Management version 3
dmesg output is attached.
Thanks!
Hong
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