Using the dribers included in Kernel 2.6.19 My hardware is a Samsung Q35 Pro (Intel Core 2 Duo T5500) Loading snd_hda_intel without parameters produces strong high frequency noise. I am now using model=3stack which works fine and also shows the SPDIF output controls (I could not test SPDIF, though). Feel free to contact me for any further information. --Michael lspci -nv follows 00:00.0 0600: 8086:27a0 (rev 03) Subsystem: 144d:c504 Flags: bus master, fast devsel, latency 0 Capabilities: <access denied> 00:02.0 0300: 8086:27a2 (rev 03) Subsystem: 144d:c504 Flags: bus master, fast devsel, latency 0, IRQ 17 Memory at d8100000 (32-bit, non-prefetchable) [size=512K] I/O ports at 1800 [size=8] Memory at c0000000 (32-bit, prefetchable) [size=256M] Memory at d8200000 (32-bit, non-prefetchable) [size=256K] Capabilities: <access denied> 00:02.1 0380: 8086:27a6 (rev 03) Subsystem: 144d:c504 Flags: fast devsel Memory at d8180000 (32-bit, non-prefetchable) [size=512K] Capabilities: <access denied> 00:1b.0 0403: 8086:27d8 (rev 02) Subsystem: 144d:c504 Flags: bus master, fast devsel, latency 0, IRQ 19 Memory at d8240000 (64-bit, non-prefetchable) [size=16K] Capabilities: <access denied> 00:1c.0 0604: 8086:27d0 (rev 02) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=02, subordinate=02, sec-latency=0 I/O behind bridge: 00002000-00002fff Memory behind bridge: d4000000-d5ffffff Prefetchable memory behind bridge: 00000000d0000000-00000000d1f00000 Capabilities: <access denied> 00:1c.1 0604: 8086:27d2 (rev 02) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=03, subordinate=04, sec-latency=0 Capabilities: <access denied> 00:1d.0 0c03: 8086:27c8 (rev 02) Subsystem: 144d:c504 Flags: bus master, medium devsel, latency 0, IRQ 22 I/O ports at 1820 [size=32] 00:1d.1 0c03: 8086:27c9 (rev 02) Subsystem: 144d:c504 Flags: bus master, medium devsel, latency 0, IRQ 23 I/O ports at 1840 [size=32] 00:1d.2 0c03: 8086:27ca (rev 02) Subsystem: 144d:c50400:1d.3 0c03: 8086:27cb (rev 02) Subsystem: 144d:c504 Flags: bus master, medium devsel, latency 0, IRQ 17 I/O ports at 1880 [size=32] 00:1d.7 0c03: 8086:27cc (rev 02) (prog-if 20) Subsystem: 144d:c504 Flags: bus master, medium devsel, latency 0, IRQ 22 Memory at d8444000 (32-bit, non-prefetchable) [size=1K] Capabilities: <access denied> 00:1e.0 0604: 8086:2448 (rev e2) (prog-if 01) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=05, subordinate=09, sec-latency=32 I/O behind bridge: 00003000-00003fff Memory behind bridge: d8000000-d80fffff Prefetchable memory behind bridge: 0000000050000000-0000000051f00000 Capabilities: <access denied> 00:1f.0 0601: 8086:27b9 (rev 02) Subsystem: 144d:c504 Flags: bus master, medium devsel, latency 0 Capabilities: <access denied> 00:1f.1 0101: 8086:27df (rev 02) (prog-if 8a) Subsystem: 144d:c504 Flags: bus master, medium devsel, latency 0, IRQ 20 I/O ports at <unassigned> I/O ports at <unassigned> I/O ports at <unassigned> I/O ports at <unassigned> I/O ports at 1810 [size=16] 00:1f.3 0c05: 8086:27da (rev 02) Subsystem: 144d:c504 Flags: medium devsel, IRQ 23 I/O ports at 18a0 [size=32] 02:00.0 0280: 8086:4222 (rev 02) Subsystem: 8086:1001 Flags: bus master, fast devsel, latency 0, IRQ 17 Memory at d4000000 (32-bit, non-prefetchable) [size=4K] Capabilities: <access denied> 05:05.0 0200: 14e4:170c (rev 02)05:09.0 0607: 1180:0476 (rev b4) Subsystem: 144d:c504 Flags: bus master, medium devsel, latency 168, IRQ 18 Memory at d8004000 (32-bit, non-prefetchable) [size=4K] Bus: primary=05, secondary=06, subordinate=09, sec-latency=176 Memory window 0: 50000000-51fff000 (prefetchable) Memory window 1: 52000000-53fff000 I/O window 0: 00003000-000030ff I/O window 1: 00003400-000034ff 16-bit legacy interface ports at 0001 05:09.1 0c00: 1180:0552 (rev 09) (prog-if 10) Subsystem: 144d:c024 Flags: bus master, medium devsel, latency 64, IRQ 21 Memory at d8002000 (32-bit, non-prefetchable) [size=2K] Capabilities: <access denied> 05:09.2 0805: 1180:0822 (rev 18) Subsystem: 144d:c024 Flags: bus master, medium devsel, latency 64, IRQ 19 Memory at d8002800 (32-bit, non-prefetchable) [size=256] Capabilities: <access denied> 05:09.3 0880: 1180:0843 Subsystem: 144d:c024 Flags: medium devsel, IRQ 255 Memory at d8002c00 (32-bit, non-prefetchable) [disabled] [size=256] Capabilities: <access denied> 05:09.4 0880: 1180:0592 (rev 09) Subsystem: 144d:c024 Flags: medium devsel, IRQ 255 Memory at d8003000 (32-bit, non-prefetchable) [disabled] [size=256] Capabilities: <access denied> 05:09.5 0880: 1180:0852 (rev 04) Subsystem: 144d:c024 Flags: medium devsel, IRQ 255 Memory at d8003400 (32-bit, non-prefetchable) [disabled] [size=256] Capabilities: <access denied> Subsystem: 144d:c504 Flags: bus master, fast devsel, latency 32, IRQ 19 Memory at d8000000 (32-bit, non-prefetchable) [size=8K] Capabilities: <access denied> Flags: bus master, medium devsel, latency 0, IRQ 20 I/O ports at 1860 [size=32] ------------------------------------------------------------------------- Take Surveys. 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