@Boris Gjenero, try using the kernel parameter "iommu=soft" instead of
limiting the memory to 1GB. It will force the use of a 64MB swiotlb
bounce buffer to workaround this issue. Tested with Focal Fossa Beta ISO
(Kernel 5.4.0-21-generic) on my Optiplex 320 with 2GB of RAM.
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You received this bu
@Hans P Möller, i've tested with kernel 5.1.0-050100rc3-generic and the
b44 module loaded and worked fine, but it created some others warnings
in the dmesg:
[ 44.045886] b44 :02:09.0: swiotlb buffer is full (sz: 1566 bytes)
[ 44.045906] WARNING: CPU: 1 PID: 565 at kernel/dma/direct.c:43
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