Date: Tue, 5 Dec 2000 07:13:55 GMT From: Keith Jones <keith@mithy.org> To: FreeBSD-gnats-submit@freebsd.org Subject: kern/23293: newpcm/emu10k: mono playback is distorted Message-ID: <200012050713.eB57DtO01043@celery.mithy.org> Resent-Message-ID: <200012050720.eB57K1w01771@freefall.freebsd.org>
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>Number: 23293
>Category: kern
>Synopsis: newpcm/emu10k: mono playback is distorted
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Mon Dec 04 23:20:00 PST 2000
>Closed-Date:
>Last-Modified:
>Originator: Keith Jones
>Release: FreeBSD 4.2-STABLE i386
>Organization:
no
>Environment:
(dmesg output follows)
Copyright (c) 1992-2000 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
The Regents of the University of California. All rights reserved.
FreeBSD 4.2-STABLE #0: Sat Nov 25 13:03:03 GMT 2000
root@celery.mithy.org:/usr/obj/usr/src/sys/CELERY
Timecounter "i8254" frequency 1193182 Hz
CPU: Pentium II/Pentium II Xeon/Celeron (400.91-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0x665 Stepping = 5
Features=0x183f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR>
real memory = 268435456 (262144K bytes)
avail memory = 258236416 (252184K bytes)
Preloaded elf kernel "kernel" at 0xc0320000.
VESA: v3.0, 4096k memory, flags:0x1, mode table:0xc02c92e2 (1000022)
VESA: NVidia
Pentium Pro MTRR support enabled
apm0: <APM BIOS> on motherboard
apm: found APM BIOS v1.2, connected at v1.2
npx0: <math processor> on motherboard
npx0: INT 16 interface
pcib0: <Intel 82443BX (440 BX) host to PCI bridge> on motherboard
pci0: <PCI bus> on pcib0
pcib1: <Intel 82443BX (440 BX) PCI-PCI (AGP) bridge> at device 1.0 on pci0
pci1: <PCI bus> on pcib1
isab0: <Intel 82371AB PCI to ISA bridge> at device 7.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <Intel PIIX4 ATA33 controller> port 0xf000-0xf00f at device 7.1 on pci0
ata0: at 0x1f0 irq 14 on atapci0
ata1: at 0x170 irq 15 on atapci0
pci0: <Intel 82371AB/EB (PIIX4) USB controller> at 7.2 irq 11
chip1: <Intel 82371AB Power management controller> port 0x5000-0x500f at device 7.3 on pci0
pcm0: <Creative EMU10K1> port 0xe400-0xe41f irq 11 at device 9.0 on pci0
pci0: <NVidia Riva TNT graphics accelerator> at 11.0 irq 5
ed0: <NE2000 PCI Ethernet (RealTek 8029)> port 0xec00-0xec1f irq 10 at device 13.0 on pci0
ed0: address 00:80:c8:fc:5c:66, type NE2000 (16 bit)
bktr0: <BrookTree 878> mem 0xdf000000-0xdf000fff irq 11 at device 17.0 on pci0
iicbb0: <I2C generic bit-banging driver> on bti2c0
iicbus0: <Philips I2C bus> on iicbb0 master-only
smbus0: <System Management Bus> on bti2c0
bktr0: Hauppauge Model 44354 A321
bktr0: Detected a MSP3415D-B3 at 0x80
bktr0: Hauppauge WinCast/TV, Philips FR1216 PAL FM tuner, msp3400c stereo, remote control.
pci0: <unknown card> (vendor=0x109e, dev=0x0878) at 17.1 irq 11
atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
atkbd0: <AT Keyboard> flags 0x1 irq 1 on atkbdc0
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: model IntelliMouse, device ID 3
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
sio0 at port 0x3f8-0x3ff irq 4 on isa0
sio0: type 16550A
sio1 at port 0x2f8-0x2ff irq 3 on isa0
sio1: type 16550A
ppc0: <Parallel port> at port 0x378-0x37f irq 7 on isa0
ppc0: Generic chipset (NIBBLE-only) in COMPATIBLE mode
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
fdc0: <NEC 72065B or clone> at port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on isa0
fdc0: FIFO enabled, 8 bytes threshold
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
ad0: 9671MB <IBM-DTTA-351010> [19650/16/63] at ata0-master UDMA33
ad1: 17206MB <WDC AC418000D> [34960/16/63] at ata0-slave UDMA33
acd0: CD-RW <CD-RW CRX100E> at ata1-master using WDMA2
acd1: DVD-ROM <HITACHI DVD-ROM GD-2500> at ata1-slave using WDMA2
Mounting root from ufs:/dev/ad0s2a
The specific card in question is a Soundblaster Live! Value (OEM) of around
June 1999.
>Description:
When playing back any mono audio, there is a lot of "noise" (usually
crackles and pops!) No such distortion is noticed when playing stereo
sound.
Judging by feedback on the mailing lists, this problem is not limited to
the Soundblaster Live! Value card but a range of SBLive! cards, all of
which use the newpcm/emu10k1 driver.
The card functions normally in other operating systems that support it.
>How-To-Repeat:
I tested this with a considerable number of stereo and mono WAV files and
MP3 files, using 'play' and 'amp' respectively. The sound quality of the
stereo files was as expected, but the mono audio output was distorted.
The same files have been tested under other operating systems that support
it, and this problem did not occur, which leads me to believe that it's a
driver problem.
>Fix:
No (yet), sorry!
>Release-Note:
>Audit-Trail:
>Unformatted:
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