that my issue for this problem :
For me it's ok with option nosmp to the kernel .
I'have, hp dv9000ea laptop , with broadcom 4310 , my graphic card is nvidia
7600 .
I use nvidia proprietary drivers and ndiswrapper for the wifi .
But the performance are reduced.
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BCM1390M (broadcom 4311)
with kernel 2.6.20 , i'have a black screen .
so i will keep last kernel which work
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BCM1390M (broadcom 4311) with ndiswrapper and nvidia IRQ conflicts
https://launchpad.net/bugs/57355
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