Please help - what is causing these errors and how do I fix them

machine is Dell i1545 laptop

tail of /var/log/messages

Apr  2 16:48:18 localhost kernel: b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
Apr  2 16:48:19 localhost kernel: __ratelimit: 4 callbacks suppressed
Apr  2 16:48:19 localhost kernel: b43-phy0: Controller restarted
Apr  2 16:48:19 localhost kernel: b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
Apr  2 16:48:19 localhost kernel: b43-phy0: Controller RESET (DMA error) ...
Apr  2 16:48:19 localhost kernel: b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
Apr  2 16:48:21 localhost kernel: b43-phy0: Controller restarted
Apr  2 16:48:21 localhost kernel: b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
Apr  2 16:48:21 localhost kernel: b43-phy0: Controller RESET (DMA error) ...
Apr  2 16:48:21 localhost kernel: b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)

info from lspci

0c:00.0 Network controller: Broadcom Corporation BCM4312 802.11b/g (rev 01)
Subsystem: Dell Wireless 1397 WLAN Mini-Card
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 17
Region 0: Memory@f69fc000 (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: [e8] 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 L0s L1, Latency L0 <4us, L1 <64us
ClockPM+ Surprise- LLActRep- BwNot-
LnkCtl: ASPM L0s 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 PATEntrySize=0
Arb: Fixed- WRR32- WRR64- WRR128- 100ns- - - onfig- TableOffset=0
Ctrl: ArbSelect=Fixed
Status: InProgress-
VC0: Caps: PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
Arb: Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256- Fixed- RR32-
Ctrl: Enable+ ID=0 ArbSelect=Fixed TC/VC=01
Status: NegoPending- InProgress-
Capabilities: [160 v1] Device Serial Number 5f-42-5f-ff-ff-7e-00-22
Capabilities: [16c v1] Power Budgeting <?>
Kernel driver in use: b43-pci-bridge
Kernel modules: ssb

Some lines from dmesg

Linux version 2.6.32.10-90.fc12.x86_64 (mockbuild at x86-04.phx2.fedoraproject.org) (gcc version 4.4.3 20100127 (Red Hat 4.4.3-4) (GCC) ) #1 SMP Tue Mar 23 09:47:08 UTC 2010

b43-pci-bridge 0000:0c:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17 b43-pci-bridge 0000:0c:00.0: setting latency timer to 64

cfg80211: Calling CRDA to update world regulatory domain
b43-phy0: Broadcom 4312 WLAN found (core revision 15)
cfg80211: World regulatory domain updated:
(start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
phy0: Selected rate control algorithm 'minstrel'
Registered led device: b43-phy0::tx
Registered led device: b43-phy0::rx
Registered led device: b43-phy0::radio
Broadcom 43xx driver loaded [ Features: PMLS, Firmware-ID: FW13 ]
cfg80211: Calling CRDA for country: US
cfg80211: Regulatory domain changed to country: US
(start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2700 mBm) (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 1700 mBm) (5250000 KHz - 5330000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) (5490000 KHz - 5600000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) (5650000 KHz - 5710000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 3000 mBm)

[drm:drm_mode_rmfb] *ERROR* tried to remove a fb that we didn't own
fuse init (API version 7.13)
b43 ssb0:0: firmware: requesting b43/ucode15.fw
b43 ssb0:0: firmware: requesting b43/lp0initvals15.fw
b43 ssb0:0: firmware: requesting b43/lp0bsinitvals15.fw
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
ADDRCONF(NETDEV_UP): wlan0: link is not ready
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
__ratelimit: 3 callbacks suppressed
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
__ratelimit: 6 callbacks suppressed
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
__ratelimit: 4 callbacks suppressed
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
__ratelimit: 4 callbacks suppressed
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
__ratelimit: 2 callbacks suppressed
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
__ratelimit: 6 callbacks suppressed
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
__ratelimit: 4 callbacks suppressed
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
__ratelimit: 2 callbacks suppressed
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
__ratelimit: 4 callbacks suppressed
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
__ratelimit: 4 callbacks suppressed
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
__ratelimit: 2 callbacks suppressed
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
CE: hpet increasing min_delta_ns to 15000 nsec
b43-phy0: Controller restarted
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
__ratelimit: 2 callbacks suppressed
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
__ratelimit: 2 callbacks suppressed
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
__ratelimit: 2 callbacks suppressed
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
__ratelimit: 2 callbacks suppressed
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
__ratelimit: 2 callbacks suppressed
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
__ratelimit: 2 callbacks suppressed
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
__ratelimit: 4 callbacks suppressed
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
__ratelimit: 2 callbacks suppressed
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
__ratelimit: 4 callbacks suppressed
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
__ratelimit: 4 callbacks suppressed
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
__ratelimit: 2 callbacks suppressed
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
__ratelimit: 4 callbacks suppressed
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
__ratelimit: 4 callbacks suppressed
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
__ratelimit: 4 callbacks suppressed
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
__ratelimit: 4 callbacks suppressed
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Controller RESET (DMA error) ...
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
b43-phy0: Controller restarted
b43-phy0 ERROR: Fatal DMA error: 0x00000400, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)

Use the Broadcom wl driver or configure b43 for PIO. Did you do any searching on this problem?

Thanks. I did searching a few months ago, and had everything working at that time, but I guess I need to do a fresh search. I'm not sure what it means to do either of the two things you suggest. There is a b43 module that came with the kernel I am running - are you saying I need to get the source and recompile it with something different done? Should that have been done by the Fedora people when they made the kernel? Or is there a way to tell whether it is or is not compiled with PIO?

I wish things would Just Work sometimes.

We do to. Unfortunately, some boxes with Intel CPU and Phoenix BIOS get this kind of error. We do not know why and have put a lot of effort into the search since this problem was first reported.

If you can find a late enough Fedora kernel, it will automatically switch to PIO when the DMA error happens. Otherwise, you might get that functionality with compat-wireless packages. I'm an openSUSE user and do not know the inner details of the Fedora system.

Larry