Hi.
I have a laptop (hp dm1 4131 ef) which is using a broadcom BCM4313
chip on archlinux with a kernel 3.4.4. (detailed system information at
the end of the mail)
I'm able to connect to wifi network with this card, but only within a
really limited range (ie, acces point should be at no more than 3
meters from the laptop, else signal strength is quickly falling to 0).
I found one or two references to the same problem on forums, but
usually people have the same laptop too, so I'm wondering if it can
come from the hardware.
So what is the status of this chip? Is this issue known ? Is there a solution ?
Thank you for your time and please ask if you need more information
about my configuration or some test done.
Configuration details:
$ lspci -vvv
03:00.0 Network controller: Broadcom Corporation BCM4313 802.11b/g/n
Wireless LAN Controller (rev 01)
Subsystem: Hewlett-Packard Company Device 1795
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: 64 bytes
Interrupt: pin A routed to IRQ 16
Region 0: Memory at 90200000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [40] Power Management version 3
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=2 PME-
Capabilities: [58] Vendor Specific Information: Len=78 <?>
Capabilities: [48] MSI: Enable- Count=1/1 Maskable- 64bit+
Address: 0000000000000000 Data: 0000
Capabilities: [d0] Express (v1) Endpoint, MSI 00
DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s
<4us, L1 unlimited
ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
DevCtl: Report errors: Correctable- Non-Fatal- Fatal-
Unsupported-
RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
MaxPayload 128 bytes, MaxReadReq 128 bytes
DevSta: CorrErr+ UncorrErr- FatalErr- UnsuppReq+
AuxPwr+ TransPend-
LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L1,
Latency L0 <4us, L1 <64us
ClockPM+ Surprise- LLActRep+ BwNot-
LnkCtl: ASPM L1 Enabled; RCB 64 bytes Disabled-
Retrain- CommClk+
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train-
SlotClk+ DLActive+ BWMgmt- ABWMgmt-
Capabilities: [100 v1] Advanced Error Reporting
UESta: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt-
UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
UEMsk: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt-
UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
UESvrt: DLP+ SDES- TLP- FCP+ CmpltTO- CmpltAbrt-
UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
CESta: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
AERCap: First Error Pointer: 14, GenCap+ CGenEn- ChkCap+ ChkEn-
Capabilities: [13c v1] Virtual Channel
Caps: LPEVC=0 RefClk=100ns PATEntryBits=1
Arb: Fixed- WRR32- WRR64- WRR128-
Ctrl: ArbSelect=Fixed
Status: InProgress-
VC0: Caps: PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
Arb: Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256-
Ctrl: Enable+ ID=0 ArbSelect=Fixed TC/VC=ff
Status: NegoPending- InProgress-
Capabilities: [160 v1] Device Serial Number 00-00-3d-ff-ff-68-e4-d5
Capabilities: [16c v1] Power Budgeting <?>
Kernel driver in use: bcma-pci-bridge
$ uname -a
Linux hpdm1 3.4.4-2-ARCH #1 SMP PREEMPT Sun Jun 24 18:59:47 CEST 2012
x86_64 GNU/Linux
$ lsmod
Module Size Used by
aes_x86_64 7508 1
cryptd 8741 0
aes_generic 26138 1 aes_x86_64
arc4 1410 2
brcmsmac 528035 0
cordic 1105 1 brcmsmac
crc8 1186 1 brcmsmac
brcmutil 3152 1 brcmsmac
bcma 22757 1 brcmsmac
mac80211 395680 1 brcmsmac
cfg80211 170074 2 brcmsmac,mac80211
rfkill 15604 2 cfg80211
snd_hda_codec_idt 55508 1
snd_hda_codec_hdmi 23672 1
snd_hda_intel 24053 7
snd_hda_codec 94273 3
snd_hda_codec_hdmi,snd_hda_codec_idt,snd_hda_intel
uvcvideo 69437 0
videobuf2_vmalloc 2468 1 uvcvideo
videobuf2_memops 2246 1 videobuf2_vmalloc
videobuf2_core 20415 1 uvcvideo
fglrx 2619025 102
videodev 93086 1 uvcvideo
snd_hwdep 6300 1 snd_hda_codec
snd_pcm 74958 3 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel
snd_page_alloc 7217 2 snd_pcm,snd_hda_intel
snd_timer 18966 1 snd_pcm
snd 58997 21
snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_hda_codec_idt,snd_pcm,snd_hda_codec,snd_hda_intel
soundcore 5410 1 snd
r8169 49354 0
evdev 9754 7
serio_raw 4653 0
uas 9285 0
i2c_piix4 8224 0
ums_realtek 7391 0
i2c_core 20369 2 i2c_piix4,videodev
k10temp 2915 0
amd_iommu_v2 7359 1 fglrx
mii 4123 1 r8169
usb_storage 44792 1 ums_realtek
psmouse 70792 0
media 10213 2 uvcvideo,videodev
wmi 8475 0
processor 26567 2
microcode 12185 0
button 4502 1 fglrx
thermal 7959 0
battery 6517 0
video 11307 0
ac 2376 0
ext4 424175 3
crc16 1359 1 ext4
jbd2 73919 1 ext4
mbcache 5977 1 ext4
sd_mod 29239 5
ohci_hcd 21720 0
ahci 20549 4
libahci 20023 1 ahci
libata 167611 2 ahci,libahci
ehci_hcd 41026 0
scsi_mod 132942 4 uas,usb_storage,libata,sd_mod
usbcore 147565 7
uas,uvcvideo,ums_realtek,usb_storage,ohci_hcd,ehci_hcd
usb_common 954 1 usbcore
--
Guillaume
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