I have a HitPoint HCMI-5.1CH-OF which uses the cmpci chipset. I am not an audiophile type (64kbps vorbis sounds good to me) but the sound quality is particularly bad in that there is a lot of hissing in the background even though I'm listening at a nominal volume. I would be inclined to think it was a hardware problem if it weren't for the fact that the sound quality is fine under Linux. Does anybody have any idea what the problem could be? Are there any settings that might make a difference (I've tried muting all the other channels)?
Thank. OpenBSD 3.9 (GENERIC) #617: Thu Mar 2 02:26:48 MST 2006 [EMAIL PROTECTED]:/usr/src/sys/arch/i386/compile/GENERIC cpu0: AMD Athlon(TM) XP 2000+ ("AuthenticAMD" 686-class, 256KB L2 cache) 1.66 GHz cpu0: FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE cpu0: AMD Powernow: TS real mem = 1073307648 (1048152K) avail mem = 972660736 (949864K) using 4278 buffers containing 53768192 bytes (52508K) of memory mainbus0 (root) bios0 at mainbus0: AT/286+(bf) BIOS, date 04/21/04, BIOS32 rev. 0 @ 0xf1aa0 apm0 at bios0: Power Management spec V1.2 apm0: AC on, battery charge unknown apm0: flags 30102 dobusy 0 doidle 1 pcibios at bios0 function 0x1a not configured bios0: ROM list: 0xc0000/0xd000 0xd0000/0x6000! cpu0 at mainbus0 pci0 at mainbus0 bus 0: configuration mode 1 (no bios) pchb0 at pci0 dev 0 function 0 "VIA VT8377 PCI" rev 0x00 ppb0 at pci0 dev 1 function 0 "VIA VT8235 AGP" rev 0x00 pci1 at ppb0 bus 1 vga1 at pci1 dev 0 function 0 "ATI Radeon 9200 PRO" rev 0x01 wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation) wsdisplay0: screen 1-5 added (80x25, vt100 emulation) "ATI Radeon 9200 PRO Sec" rev 0x01 at pci1 dev 0 function 1 not configured bce0 at pci0 dev 9 function 0 "Broadcom BCM4401" rev 0x01: irq 4, address 00:e0:18:a1:31:f0 bmtphy0 at bce0 phy 1: BCM4401 10/100baseTX PHY, rev. 0 cmpci0 at pci0 dev 11 function 0 "C-Media Electronics CMI8738/C3DX Audio" rev 0x10: irq 3 audio0 at cmpci0 ral0 at pci0 dev 14 function 0 "Ralink RT2560" rev 0x01: irq 10, address 00:0e:2e:5c:2d:0f ral0: MAC/BBP RT2560 (rev 0x04), RF RT2525 uhci0 at pci0 dev 16 function 0 "VIA VT83C572 USB" rev 0x80: irq 7 usb0 at uhci0: USB revision 1.0 uhub0 at usb0 uhub0: VIA UHCI root hub, rev 1.00/1.00, addr 1 uhub0: 2 ports with 2 removable, self powered uhci1 at pci0 dev 16 function 1 "VIA VT83C572 USB" rev 0x80: irq 7 usb1 at uhci1: USB revision 1.0 uhub1 at usb1 uhub1: VIA UHCI root hub, rev 1.00/1.00, addr 1 uhub1: 2 ports with 2 removable, self powered uhci2 at pci0 dev 16 function 2 "VIA VT83C572 USB" rev 0x80: irq 7 usb2 at uhci2: USB revision 1.0 uhub2 at usb2 uhub2: VIA UHCI root hub, rev 1.00/1.00, addr 1 uhub2: 2 ports with 2 removable, self powered ehci0 at pci0 dev 16 function 3 "VIA VT6202 USB" rev 0x82: irq 7 usb3 at ehci0: USB revision 2.0 uhub3 at usb3 uhub3: VIA EHCI root hub, rev 2.00/1.00, addr 1 uhub3: 6 ports with 6 removable, self powered viapm0 at pci0 dev 17 function 0 "VIA VT8235 ISA" rev 0x00 iic0 at viapm0 "unknown" at iic0 addr 0x18 not configured asbtm0 at iic0 addr 0x2d lm1 at iic0 addr 0x2f: W83791D pciide0 at pci0 dev 17 function 1 "VIA VT82C571 IDE" rev 0x06: ATA133, channel 0 configured to compatibility, channel 1 configured to compatibility wd0 at pciide0 channel 0 drive 0: <IC35L060AVVA07-0> wd0: 16-sector PIO, LBA, 58644MB, 120103200 sectors wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 5 atapiscsi0 at pciide0 channel 1 drive 0 scsibus0 at atapiscsi0: 2 targets cd0 at scsibus0 targ 0 lun 0: <PIONEER, DVD-RW DVR-108, 1.20> SCSI0 5/cdrom removable cd0(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 4 auvia0 at pci0 dev 17 function 5 "VIA VT8233 AC97" rev 0x50: irq 6 ac97: codec id 0x414c4720 (Avance Logic ALC650) ac97: codec features 20 bit DAC, 18 bit ADC, Realtek 3D audio1 at auvia0 isa0 at mainbus0 isadma0 at isa0 pckbc0 at isa0 port 0x60/5 pckbd0 at pckbc0 (kbd slot) pckbc0: using irq 1 for kbd slot wskbd0 at pckbd0: console keyboard, using wsdisplay0 pcppi0 at isa0 port 0x61 midi0 at pcppi0: <PC speaker> spkr0 at pcppi0 npx0 at isa0 port 0xf0/16: using exception 16 biomask fba5 netmask ffb5 ttymask ffb7 pctr: user-level cycle counter enabled mtrr: Pentium Pro MTRR support uhidev0 at uhub1 port 2 configuration 1 interface 0 uhidev0: Microsoft Microsoft 3-Button Mouse with IntelliEye(TM), rev 1.10/3.00, addr 2, iclass 3/1 ums0 at uhidev0: 3 buttons and Z dir. wsmouse0 at ums0 mux 0 dkcsum: wd0 matches BIOS drive 0x80 root on wd0a rootdev=0x0 rrootdev=0x300 rawdev=0x302 -- The bigger the theory the better.