loaded sound / snd_ess dmesg shows: pcm0: <ESS Technology Maestro-2E> port 0xd800-0xd8ff irq 5 at device 8.0 on pci0 pcm0: cannot allocate DMA memory device_attach: pcm0 attach returned 6 pcm0: <ESS Technology Maestro-2E> port 0xd800-0xd8ff irq 5 at device 8.0 on pci0 pcm0: cannot allocate DMA memory ???