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Re: b43 with 14e4 gives DMA error

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On Sun, Nov 1, 2009 at 1:51 PM, Thomas Wiecki
<thomas.wiecki@xxxxxxxxxxxxxx> wrote:
> 0c:00.0 Network controller [0280]: Broadcom Corporation BCM4312
> 802.11b/g [14e4:4315] (rev 01)
>        Subsystem: Dell Device [1028:000c]
>        Flags: bus master, fast devsel, latency 0, IRQ 17
>        Memory at f1ffc000 (64-bit, non-prefetchable) [size=16K]
>        Capabilities: <access denied>
>        Kernel driver in use: wl
>        Kernel modules: wl, ssb
>
> A variable delay after loading the most recent b43 driver I get a lot
> of (I hope last nights patches would have fixed the problems, but they
> didn't):
> [ 6895.111946] b43-phy0 ERROR: Fatal DMA error: 0x00000800,
> 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
> [ 6895.111955] b43-phy0: Controller RESET (DMA error) ...
> [ 6895.336490] b43-phy0: Loading firmware version 478.104 (2008-07-01 00:50:23)
> [ 6900.841372] b43-phy0: Controller restarted
>
> After installing the driver for the first time, I have a few minutes I
> can use the wifi card, after that the DMA errors start to occur. Once
> they occured after the first loading, they appear immediatly after
> each loading.
>
> Ubuntu 9.04 (most recent) with kernel 2.6.31-14-generic
>
> Laptop is Dell E6500.
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Does noacpi/noapic or blacklisting module "processor" have any effect on this?

Also, is this on PhoenixBIOS?

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