Hi,
I have a new notebook (HP DM1-4125) onto which I have installed openSUSE 12.1.
Generally, all is well. But (isn't there always!) I am having problems with the
wireless (wlan and bt).
The radio module is a Broadcom BCM94313HMGB. Which, I think is a BCM4313 plus a
BCM20702AW bluetooth component?
My problem is that the rx signal is VERY poor.
For example with BCM94313 (wlan0) installed in a testbed alongside a (very old
but) known working unit (wlan1). At only 30cm from the AP, I see these figures:
#iwlist scan
wlan0 Scan completed :
Cell 01 - Address: 00:21:63:30:0B:E8
Channel:11
Frequency:2.462 GHz (Channel 11)
**********Quality=37/70 Signal level=-73 dBm*************
Encryption key:on
ESSID:"myAP0"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
9 Mb/s; 12 Mb/s; 18 Mb/s
Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=00000000127b4180
Extra: Last beacon: 166ms ago
*****Truncated*******
wlan1 Scan completed :
Cell 01 - Address: 00:21:63:30:0B:E8
Channel:11
Frequency:2.462 GHz (Channel 11)
**********Quality=70/70 Signal level=-33 dBm***********
Encryption key:on
ESSID:"myAP0"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
9 Mb/s; 12 Mb/s; 18 Mb/s
Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=00000000127f062e
Extra: Last beacon: 169ms ago
******TRUNCATED*****
When, I move more that 5 meters away from the AP, all connection is lost via the
Broadcom. I have to increase the distance to over 20m before the other wlan
connection starts complaining. Any suggestions on how to increase the range for
the broadcom will be appreciated.
One possible cause that comes to mind is the Antenna Diversity?
Is the antenna switch introducing this massive loss? Can this antenna switch be
bypassed via software or is it purely a hardware function?
Incidentally, the bluetooth function is nowhere to be seen!! But I guess that
this is a whole different (driver) issue?
I hope that any details that may be useful are listed here:
#hwinfo --wlan
25: PCI 300.0: 0282 WLAN controller
[Created at pci.319]
Unique ID: y9sn.N0h4zxfwtV0
Parent ID: H0_h.4N97gW8nvQ8
SysFS ID: /devices/pci0000:00/0000:00:06.0/0000:03:00.0
SysFS BusID: 0000:03:00.0
Hardware Class: network
Model: "Broadcom WLAN controller"
Vendor: pci 0x14e4 "Broadcom"
Device: pci 0x4727
SubVendor: pci 0x103c "Hewlett-Packard Company"
SubDevice: pci 0x1795
Revision: 0x01
Driver: "brcmsmac"
Driver Modules: "brcmsmac"
Device File: wlan0
Features: WLAN
Memory Range: 0xfe3fc000-0xfe3fffff (rw,non-prefetchable)
IRQ: 18 (no events)
HW Address: 60:d8:19:99:39:12
Link detected: no
WLAN channels: 1 2 3 4 5 6 7 8 9 10 11 12 13 14
WLAN frequencies: 2.412 2.417 2.422 2.427 2.432 2.437 2.442 2.447 2.452 2.457
2.462 2.467 2.472 2.484
WLAN encryption modes: WEP40 WEP104 TKIP CCMP
WLAN authentication modes: open sharedkey wpa-psk wpa-eap
Module Alias: "pci:v000014E4d00004727sv0000103Csd00001795bc02sc80i00"
Driver Info #0:
Driver Status: brcmsmac is active
Driver Activation Cmd: "modprobe brcmsmac"
Driver Info #1:
Driver Status: bcma is active
Driver Activation Cmd: "modprobe bcma"
Driver Info #2:
Driver Status: wl is active
Driver Activation Cmd: "modprobe wl"
Config Status: cfg=no, avail=yes, need=no, active=unknown
Attached to: #4 (PCI bridge)
27: PCMCIA 00.0: 0282 WLAN controller
[Created at pcmcia.84]
Unique ID: pz0h.lG4e6KMEdl8
Parent ID: +QnG.J5lSzbB0WR8
SysFS ID: /devices/pci0000:00/0000:00:14.4/0000:04:06.0/0.0
SysFS BusID: 0.0
Hardware Class: network
Model: "TOSHIBA Wireless LAN Card"
Hotplug: CardBus
Socket: 0
Vendor: pcmcia 0x0156 "TOSHIBA"
Device: pcmcia 0x0002 "Wireless LAN Card"
Driver: "orinoco_cs"
Driver Modules: "orinoco_cs"
Device File: eth1
Features: WLAN
HW Address: 00:02:2d:13:2d:ea
Link detected: no
WLAN channels: 1 2 3 4 5 6 7 8 9 10 11
WLAN frequencies: 2.412 2.417 2.422 2.427 2.432 2.437 2.442 2.447 2.452 2.457
2.462
WLAN encryption modes: WEP40 WEP104 TKIP
WLAN authentication modes: open sharedkey wpa-psk wpa-eap
Module Alias:
"pcmcia:m0156c0002f06fn00pfn00paB4585A1Apb0B537C13pcD27DEB1Apd00000000"
Driver Info #0:
Driver Status: hostap_cs is not active
Driver Activation Cmd: "modprobe hostap_cs"
Driver Info #1:
Driver Status: orinoco_cs is active
Driver Activation Cmd: "modprobe orinoco_cs"
Extra Info: TOSHIBA, Wireless LAN Card, Version 01.01
Config Status: cfg=no, avail=yes, need=no, active=unknown
Attached to: #26 (CardBus bridge)
Regards, Martin
--
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
