From owner-freebsd-multimedia@FreeBSD.ORG Sat Mar 18 13:58:41 2006 Return-Path: X-Original-To: freebsd-multimedia@freebsd.org Delivered-To: freebsd-multimedia@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id BA84116A422 for ; Sat, 18 Mar 2006 13:58:41 +0000 (UTC) (envelope-from nik@cs.chalmers.se) Received: from anubis.medic.chalmers.se (anubis.medic.chalmers.se [129.16.30.218]) by mx1.FreeBSD.org (Postfix) with ESMTP id 0445043D5F for ; Sat, 18 Mar 2006 13:58:35 +0000 (GMT) (envelope-from nik@cs.chalmers.se) Received: from [83.226.117.213] (c-d575e253.1530-1-64736c11.cust.bredbandsbolaget.se [83.226.117.213]) by anubis.medic.chalmers.se (Postfix) with ESMTP id BEA0C8B89 for ; Sat, 18 Mar 2006 14:58:34 +0100 (CET) Message-ID: <441C11F5.8070001@cs.chalmers.se> Date: Sat, 18 Mar 2006 14:58:13 +0100 From: Niklas Sorensson User-Agent: Thunderbird 1.5 (X11/20060119) MIME-Version: 1.0 To: freebsd-multimedia@freebsd.org Content-Type: multipart/mixed; boundary="------------050907020709000201040102" Subject: Poor sound quality with snd_via8233 X-BeenThere: freebsd-multimedia@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Multimedia discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 18 Mar 2006 13:58:41 -0000 This is a multi-part message in MIME format. --------------050907020709000201040102 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Hello, I experience constant poor sound quality with the snd_8233 driver, ie not interruptions due to temporary load or anything like that, but constant distortion. I've been able to live with it because its good enough to use for Skype, but I really would like to be able to listen to music as well. I've searched mailing lists and googled, but couldn't find any problem description that fits mine. I'm running current, on an ASUS K8V Deluxe board. My kernel config and details about the sound setup is attached. Any advice on how to improve the situation is appreciated /Niklas --------------050907020709000201040102 Content-Type: text/plain; name="APA" Content-Transfer-Encoding: 7bit Content-Disposition: inline; filename="APA" # # GENERIC -- Generic kernel configuration file for FreeBSD/i386 # # For more information on this file, please read the handbook section on # Kernel Configuration Files: # # http://www.FreeBSD.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig-config.html # # The handbook is also available locally in /usr/share/doc/handbook # if you've installed the doc distribution, otherwise always see the # FreeBSD World Wide Web server (http://www.FreeBSD.org/) for the # latest information. # # An exhaustive list of options and more detailed explanations of the # device lines is also present in the ../../conf/NOTES and NOTES files. # If you are in doubt as to the purpose or necessity of a line, check first # in NOTES. # # $FreeBSD: src/sys/i386/conf/GENERIC,v 1.438 2006/01/21 12:38:35 marius Exp $ cpu I686_CPU ident APA options CPU_ENABLE_SSE # To statically compile in device wiring instead of /boot/device.hints #hints "GENERIC.hints" # Default places to look for devices. #makeoptions DEBUG=-g # Build kernel with gdb(1) debug symbols #options SCHED_ULE # ULE scheduler options SCHED_4BSD # 4BSD scheduler options PREEMPTION # Enable kernel thread preemption options INET # InterNETworking #options INET6 # IPv6 communications protocols options FFS # Berkeley Fast Filesystem options SOFTUPDATES # Enable FFS soft updates support #options UFS_ACL # Support for access control lists options UFS_DIRHASH # Improve performance on big directories options MD_ROOT # MD is a potential root device #options NFSCLIENT # Network Filesystem Client #options NFSSERVER # Network Filesystem Server #options NFS_ROOT # NFS usable as /, requires NFSCLIENT options MSDOSFS # MSDOS Filesystem options CD9660 # ISO 9660 Filesystem options PROCFS # Process filesystem (requires PSEUDOFS) options PSEUDOFS # Pseudo-filesystem framework options GEOM_GPT # GUID Partition Tables. options COMPAT_43 # Compatible with BSD 4.3 [KEEP THIS!] options COMPAT_43TTY # BSD 4.3 TTY compat [KEEP THIS!] options COMPAT_FREEBSD4 # Compatible with FreeBSD4 options COMPAT_FREEBSD5 # Compatible with FreeBSD5 options SCSI_DELAY=5000 # Delay (in ms) before probing SCSI options KTRACE # ktrace(1) support options SYSVSHM # SYSV-style shared memory options SYSVMSG # SYSV-style message queues options SYSVSEM # SYSV-style semaphores options _KPOSIX_PRIORITY_SCHEDULING # POSIX P1003_1B real-time extensions options KBD_INSTALL_CDEV # install a CDEV entry in /dev #options AHC_REG_PRETTY_PRINT # Print register bitfields in debug # # output. Adds ~128k to driver. #options AHD_REG_PRETTY_PRINT # Print register bitfields in debug # # output. Adds ~215k to driver. options ADAPTIVE_GIANT # Giant mutex is adaptive. options STOP_NMI # Stop CPUS using NMI instead of IPI #options NETSMB options HWPMC_HOOKS device hwpmc device apic # Debugging for use in -current #options KDB # Enable kernel debugger support. #options DDB # Support DDB. #options GDB # Support remote GDB. #options INVARIANTS # Enable calls of extra sanity checking #options INVARIANT_SUPPORT # Extra sanity checks of internal structures, required by INVARIANTS #options WITNESS # Enable checks to detect deadlocks and cycles #options WITNESS_SKIPSPIN # Don't run witness on spinlocks for speed # Bus support. device eisa device pci # ATA and ATAPI devices device ata device atadisk # ATA disk drives device atapicam #device ataraid # ATA RAID drives #device atapicd # ATAPI CDROM drives options ATA_STATIC_ID # Static device numbering # SCSI peripherals device scbus # SCSI bus (required for SCSI) #device ch # SCSI media changers device da # Direct Access (disks) device cd # CD device pass # Passthrough device (direct SCSI access) # atkbdc0 controls both the keyboard and the PS/2 mouse device atkbdc # AT keyboard controller device atkbd # AT keyboard device psm # PS/2 mouse device vga # VGA video card driver device splash # Splash screen and screen saver support # syscons is the default console driver, resembling an SCO console device sc device agp # support several AGP chipsets # Add suspend/resume support for the i8254. #device pmtimer # PCI Ethernet NICs that use the common MII bus controller code. # NOTE: Be sure to keep the 'device miibus' line in order to use these NICs! device miibus # MII bus support device sk # SysKonnect SK-984x & SK-982x gigabit Ethernet # Pseudo devices. device loop # Network loopback device random # Entropy device device ether # Ethernet support device tun # Packet tunnel. device pty # Pseudo-ttys (telnet etc) device md # Memory "disks" #device gif # IPv6 and IPv4 tunneling #device faith # IPv6-to-IPv4 relaying (translation) # The `bpf' device enables the Berkeley Packet Filter. # Be aware of the administrative consequences of enabling this! # Note that 'bpf' is required for DHCP. device bpf # Berkeley packet filter # USB support device uhci # UHCI PCI->USB interface device ohci # OHCI PCI->USB interface device ehci # EHCI PCI->USB interface (USB 2.0) device usb # USB Bus (required) #device udbp # USB Double Bulk Pipe devices device ugen # Generic device uhid # "Human Interface Devices" #device ukbd # Keyboard #device ulpt # Printer device umass # Disks/Mass storage - Requires scbus and da #device ums # Mouse # FireWire support #device firewire # FireWire bus code #device sbp # SCSI over FireWire (Requires scbus and da) device sound device "snd_via8233" --------------050907020709000201040102 Content-Type: text/plain; name="apa-setup" Content-Transfer-Encoding: 7bit Content-Disposition: inline; filename="apa-setup" -------------------------------------------------------------------------------- apa# uname -a FreeBSD apa 7.0-CURRENT FreeBSD 7.0-CURRENT #16: Thu Mar 16 17:14:27 CET 2006 nik@apa:/usr/obj/usr/src/sys/APA i386 -------------------------------------------------------------------------------- apa# pciconf -lv | grep -B 4 audio pcm0@pci0:17:5: class=0x040100 card=0x80b01043 chip=0x30591106 rev=0x60 hdr=0x00 vendor = 'VIA Technologies Inc' device = 'VT8233/33A/8235/8237 AC97 Enhanced Audio Controller' class = multimedia subclass = audio -------------------------------------------------------------------------------- apa# dmesg | grep ^pcm pcm0: port 0xc800-0xc8ff irq 22 at device 17.5 on pci0 pcm0: pcm0: -------------------------------------------------------------------------------- apa# sysctl hw.snd.verbose=2 ; cat /dev/sndstat hw.snd.verbose: 1 -> 2 FreeBSD Audio Driver (newpcm) Installed devices: pcm0: at io 0xc800 irq 22 (1p/1r/1v channels duplex default) [pcm0:play:0]: spd 48000, fmt 0x10000010, flags 0x00103000, 0x00000000 interrupts 224, underruns 0, ready 0 [b:4096/2048/2|bs:4096/2048/2] {userland} -> feeder_vchan_s16(0x10000010) -> {hardware} pcm0:play:0[pcm0:virtual:0]: spd 22050/48000, fmt 0x00000020/0x10000010, flags 0x10000000, 0x00000010 interrupts 0, underruns 0, ready 0 [b:0/2048/0|bs:131072/1024/128] {userland} -> feeder_root(0x00000020) -> feeder_endian16(0x00000020 -> 0x00000010) -> feeder_monotostereo16(0x00000010 -> 0x10000010) -> feeder_rate(22050 -> 48000) -> {hardware} [pcm0:record:0]: spd 8000, fmt 0x00000008, flags 0x00000000, 0x00000000 interrupts 0, overruns 0, hfree 256, sfree 131072 [b:256/128/2|bs:131072/128/1024] {hardware} -> feeder_root(0x00000008) -> {userland} -------------------------------------------------------------------------------- apa# sysctl hw.snd hw.snd.targetirqrate: 32 hw.snd.report_soft_formats: 1 hw.snd.feeder_rate_ratemin: 4000 hw.snd.feeder_rate_ratemax: 1102500 hw.snd.feeder_rate_scaling: 5 hw.snd.feeder_rate_buffersize: 8192 hw.snd.verbose: 2 hw.snd.unit: 0 hw.snd.maxautovchans: 10 hw.snd.pcm0.buffersize: 4096 hw.snd.pcm0.vchans: 1 hw.snd.pcm0.vchanrate: 48000 -------------------------------------------------------------------------------- apa# /usr/sbin/mixer Mixer vol is currently set to 100:100 Mixer pcm is currently set to 100:100 Mixer line is currently set to 100:100 Mixer mic is currently set to 100:100 Mixer cd is currently set to 100:100 Mixer rec is currently set to 100:100 Mixer igain is currently set to 100:100 Mixer ogain is currently set to 10:10 Mixer line1 is currently set to 75:75 Mixer phin is currently set to 0:0 Mixer phout is currently set to 0:0 Recording source: mic --------------050907020709000201040102--