error audio card

[Luca]

Hi, I have an error when the kernel start to load the audio card:

hda_codec: Unknown model for ALC880, trying auto-probe from BIOS...
hda_codec: num_steps = 0 for NID=0x8
hda_codec: num_steps = 0 for NID=0x9
hda_codec: num_steps = 0 for NID=0x9
hda_codec: num_steps = 0 for NID=0x9
hda_codec: num_steps = 0 for NID=0x9
hda_codec: num_steps = 0 for NID=0x9
hda_codec: num_steps = 0 for NID=0x9
hda_codec: num_steps = 0 for NID=0x9
hda_codec: num_steps = 0 for NID=0x9
hda_codec: num_steps = 0 for NID=0x9
hda_codec: num_steps = 0 for NID=0x9
hda_codec: num_steps = 0 for NID=0x9
hda_codec: num_steps = 0 for NID=0x9
hda_codec: num_steps = 0 for NID=0x9
hda_codec: num_steps = 0 for NID=0x9
hda_codec: num_steps = 0 for NID=0x9
hda_codec: num_steps = 0 for NID=0x9

Why this error? Why somethimes?

tnks
Luca
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