[mythtv-users] Strange Audio Behavior - Static in One Speaker
Dave Bixler
dbixler at wbs-wireless.com
Sun Jan 22 16:13:26 UTC 2006
I've been searching the lists for the last few days trying to find out
what I may have done wrong to cause the behavior that I'm experiencing
with no luck so I finally decided to ask for help here.
Everything is working very well and my system is stable. I can watch TV
using the TV Viewer in Redhat FC4 and if I un-mute the line in, audio is
flawless. Sound/music also plays flawlessly.
So, I have the patch cable from the Hauppauge WinTV Go Plus to the line
in of my Diamond Monster Sound audio card. When I run MythTV and select
Watch TV, it fires up fine. However, only the right speaker has audio.
The left speaker starts having a tiny amount of static. This static
then starts getting louder about every second preceded by a small "pop"
sound. Each time, it's as if the volume of the static is doubled until
it becomes so loud it just distorts horribly. If I use kmix and slide
the balance all the way to the right speaker, I still hear the audio
from the TV card fine. If I slide it all the way to the left, it's pure
static. Does anyone have ANY suggestions whatsoever? I'm including
potential hardware info at the end of this message and if I've forgotten
anything, or can include additional information, please let me know.
I'm dying to have this working, it's such a sweet application!
Thanks in advance for any insight!
System Summary: AMD Athlon 1800Mhz, Riva TNT2, Diamond Monster Sound
(Aureal Vortex 2 -- module: snd-au8830).
[root at bywater ~]# lspci -v
00:00.0 Host bridge: VIA Technologies, Inc. VT8378 [KM400/A] Chipset
Host Bridge
Subsystem: VIA Technologies, Inc. VT8378 [KM400/A] Chipset Host
Bridge
Flags: bus master, 66Mhz, medium devsel, latency 8
Memory at d0000000 (32-bit, prefetchable) [size=128M]
Capabilities: [80] AGP version 3.5
Capabilities: [c0] Power Management version 2
00:01.0 PCI bridge: VIA Technologies, Inc. VT8237 PCI Bridge (prog-if 00
[Normal decode])
Flags: bus master, 66Mhz, medium devsel, latency 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
Memory behind bridge: da000000-dbffffff
Prefetchable memory behind bridge: d8000000-d9ffffff
Capabilities: [80] Power Management version 2
00:08.0 Multimedia video controller: Brooktree Corporation Bt878 Video
Capture (rev 11)
Subsystem: Hauppauge computer works Inc. WinTV Series
Flags: bus master, medium devsel, latency 32, IRQ 11
Memory at dc044000 (32-bit, prefetchable) [size=4K]
Capabilities: [44] Vital Product Data
Capabilities: [4c] Power Management version 2
00:08.1 Multimedia controller: Brooktree Corporation Bt878 Audio Capture
(rev 11)
Subsystem: Hauppauge computer works Inc. WinTV Series
Flags: bus master, medium devsel, latency 32, IRQ 11
Memory at dc045000 (32-bit, prefetchable) [size=4K]
Capabilities: [44] Vital Product Data
Capabilities: [4c] Power Management version 2
00:09.0 Multimedia audio controller: Aureal Semiconductor Vortex 2 (rev fe)
Subsystem: Diamond Multimedia Systems Monster Sound II
Flags: bus master, medium devsel, latency 32, IRQ 5
Memory at dc000000 (32-bit, non-prefetchable) [size=256K]
I/O ports at c000 [size=8]
I/O ports at c400 [size=8]
Capabilities: [dc] Power Management version 1
00:0a.0 Ethernet controller: Linksys Gigabit Network Adapter (rev 12)
Subsystem: Linksys EG1032 v2 Instant Gigabit Network Adapter
Flags: bus master, 66Mhz, medium devsel, latency 32, IRQ 12
Memory at dc040000 (32-bit, non-prefetchable) [size=16K]
I/O ports at c800 [size=256]
Capabilities: [48] Power Management version 2
Capabilities: [50] Vital Product Data
00:0f.0 IDE interface: VIA Technologies, Inc.
VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06)
(prog-if 8a [Master SecP PriP])
Subsystem: VIA Technologies, Inc.
VT82C586/B/VT82C686/A/B/VT8233/A/C/VT8235 PIPC Bus Master IDE
Flags: bus master, medium devsel, latency 32
I/O ports at cc00 [size=16]
Capabilities: [c0] Power Management version 2
00:10.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1
Controller (rev 81) (prog-if 00 [UHCI])
Subsystem: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller
Flags: bus master, medium devsel, latency 32, IRQ 11
I/O ports at d000 [size=32]
Capabilities: [80] Power Management version 2
00:10.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1
Controller (rev 81) (prog-if 00 [UHCI])
Subsystem: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller
Flags: bus master, medium devsel, latency 32, IRQ 11
I/O ports at d400 [size=32]
Capabilities: [80] Power Management version 2
00:10.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1
Controller (rev 81) (prog-if 00 [UHCI])
Subsystem: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller
Flags: bus master, medium devsel, latency 32, IRQ 5
I/O ports at d800 [size=32]
Capabilities: [80] Power Management version 2
00:10.3 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1
Controller (rev 81) (prog-if 00 [UHCI])
Subsystem: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller
Flags: bus master, medium devsel, latency 32, IRQ 5
I/O ports at dc00 [size=32]
Capabilities: [80] Power Management version 2
00:10.4 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 86) (prog-if
20 [EHCI])
Subsystem: VIA Technologies, Inc. USB 2.0
Flags: bus master, medium devsel, latency 32, IRQ 12
Memory at dc046000 (32-bit, non-prefetchable) [size=256]
Capabilities: [80] Power Management version 2
00:11.0 ISA bridge: VIA Technologies, Inc. VT8237 ISA bridge
[KT600/K8T800/K8T890 South]
Subsystem: VIA Technologies, Inc. DFI KT600-AL Motherboard
Flags: bus master, stepping, medium devsel, latency 0
Capabilities: [c0] Power Management version 2
00:12.0 Ethernet controller: VIA Technologies, Inc. VT6102 [Rhine-II]
(rev 78)
Subsystem: Biostar Microtech Int'l Corp: Unknown device 2200
Flags: bus master, medium devsel, latency 32, IRQ 11
I/O ports at e000 [size=256]
Memory at dc047000 (32-bit, non-prefetchable) [size=256]
Capabilities: [40] Power Management version 2
01:00.0 VGA compatible controller: nVidia Corporation NV5 [RIVA TNT2
Ultra] (rev 11) (prog-if 00 [VGA])
Subsystem: Guillemot Corporation Maxi Gamer Xentor 32
Flags: bus master, 66Mhz, medium devsel, latency 32, IRQ 11
Memory at da000000 (32-bit, non-prefetchable) [size=16M]
Memory at d8000000 (32-bit, prefetchable) [size=32M]
[virtual] Expansion ROM at db000000 [disabled] [size=64K]
Capabilities: [60] Power Management version 1
Capabilities: [44] AGP version 2.0
-------------------------------------------------------------------------------------------------------------------------
[root at bywater ~]# dmesg | grep tv
bttv: driver version 0.9.16 loaded
bttv: using 8 buffers with 2080k (520 pages) each for capture
bttv: Bt8xx card found (0).
bttv0: Bt878 (rev 17) at 0000:00:08.0, irq: 11, latency: 32, mmio:
0xdc044000
bttv0: detected: Hauppauge WinTV [card=10], PCI subsystem ID is 0070:13eb
bttv0: using: Hauppauge (bt878) [card=10,autodetected]
bttv0: gpio: en=00000000, out=00000000 in=00ffffdb [init]
bttv0: Hauppauge/Voodoo msp34xx: reset line init [5]
tveeprom 1-0050: Hauppauge model 44981, rev E199, serial# 8228485
tveeprom 1-0050: tuner model is TCL 2002N 5H (idx 99, type 50)
tveeprom 1-0050: TV standards NTSC(M) (eeprom 0x08)
tveeprom 1-0050: audio processor is None (idx 0)
tveeprom 1-0050: decoder processor is BT878 (idx 14)
tveeprom 1-0050: has no radio, has IR remote
bttv0: using tuner=50
bttv0: i2c: checking for MSP34xx @ 0x80... not found
bttv0: i2c: checking for TDA9875 @ 0xb0... not found
bttv0: i2c: checking for TDA7432 @ 0x8a... not found
bttv0: i2c: checking for TDA9887 @ 0x86... not found
bttv0: registered device video0
bttv0: registered device vbi0
bttv0: PLL: 28636363 => 35468950 .. ok
bttv0: PLL can sleep, using XTAL (28636363).
-------------------------------------------------------------------------------------------------------------------------
[root at bywater ~]# dmesg
Linux version 2.6.14-1.1656_FC4 (bhcompile at tweety.build.redhat.com) (gcc
version 4.0.2 20051125 (Red Hat 4.0.2-8)) #1 Thu Jan 5 22:13:22 EST 2006
BIOS-provided physical RAM map:
BIOS-e820: 0000000000000000 - 00000000000a0000 (usable)
BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
BIOS-e820: 0000000000100000 - 0000000040000000 (usable)
BIOS-e820: 00000000fec00000 - 00000000fec01000 (reserved)
BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
BIOS-e820: 00000000ffff0000 - 0000000100000000 (reserved)
128MB HIGHMEM available.
896MB LOWMEM available.
Using x86 segment limits to approximate NX protection
On node 0 totalpages: 262144
DMA zone: 4096 pages, LIFO batch:1
Normal zone: 225280 pages, LIFO batch:31
HighMem zone: 32768 pages, LIFO batch:15
DMI 2.2 present.
ACPI: Unable to locate RSDP
Allocating PCI resources starting at 50000000 (gap: 40000000:bec00000)
Built 1 zonelists
Kernel command line: ro root=LABEL=/ rhgb quiet
Initializing CPU#0
CPU 0 irqstacks, hard=c03f3000 soft=c03f2000
PID hash table entries: 4096 (order: 12, 65536 bytes)
Detected 1826.353 MHz processor.
Using tsc for high-res timesource
Console: colour VGA+ 80x25
Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
Memory: 1034240k/1048576k available (2099k kernel code, 13500k reserved,
718k data, 172k init, 131072k highmem)
Checking if this processor honours the WP bit even in supervisor mode... Ok.
Calibrating delay using timer specific routine.. 3658.46 BogoMIPS
(lpj=7316935)
Security Framework v1.0.0 initialized
SELinux: Initializing.
SELinux: Starting in permissive mode
selinux_register_security: Registering secondary module capability
Capability LSM initialized as secondary
Mount-cache hash table entries: 512
CPU: After generic identify, caps: 0383fbff c1c3fbff 00000000 00000000
00000000 00000000 00000000
CPU: After vendor identify, caps: 0383fbff c1c3fbff 00000000 00000000
00000000 00000000 00000000
CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
CPU: L2 Cache: 512K (64 bytes/line)
CPU: After all inits, caps: 0383f3ff c1c3fbff 00000000 00000020 00000000
00000000 00000000
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#0.
mtrr: v2.0 (20020519)
CPU: AMD Athlon(tm) XP 2500+ stepping 00
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Checking 'hlt' instruction... OK.
checking if image is initramfs... it is
Freeing initrd memory: 1073k freed
NET: Registered protocol family 16
PCI: PCI BIOS revision 2.10 entry at 0xfb610, last bus=1
PCI: Using configuration type 1
ACPI: Subsystem revision 20050916
ACPI: Interpreter disabled.
Linux Plug and Play Support v0.97 (c) Adam Belay
pnp: PnP ACPI: disabled
usbcore: registered new driver usbfs
usbcore: registered new driver hub
PCI: Probing PCI hardware
PCI: Probing PCI hardware (bus 00)
Boot video device is 0000:01:00.0
PCI: Using IRQ router VIA [1106/3227] at 0000:00:11.0
PCI: Bridge: 0000:00:01.0
IO window: disabled.
MEM window: da000000-dbffffff
PREFETCH window: d8000000-d9ffffff
PCI: Setting latency timer of device 0000:00:01.0 to 64
apm: BIOS version 1.2 Flags 0x07 (Driver version 1.16ac)
audit: initializing netlink socket (disabled)
audit(1137841023.628:1): initialized
highmem bounce pool size: 64 pages
Total HugeTLB memory allocated, 0
VFS: Disk quotas dquot_6.5.1
Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
SELinux: Registering netfilter hooks
Initializing Cryptographic API
ksign: Installing public key data
Loading keyring
- Added public key 86D1D7472B6BE898
- User ID: Red Hat, Inc. (Kernel Module GPG key)
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
isapnp: Scanning for PnP cards...
isapnp: No Plug & Play device found
Real Time Clock Driver v1.12
Linux agpgart interface v0.101 (c) Dave Jones
agpgart: Detected VIA KM400/KM400A chipset
agpgart: AGP aperture is 128M @ 0xd0000000
PNP: No PS/2 controller found. Probing ports directly.
serio: i8042 AUX port at 0x60,0x64 irq 12
serio: i8042 KBD port at 0x60,0x64 irq 1
Serial: 8250/16550 driver $Revision: 1.90 $ 32 ports, IRQ sharing enabled
ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered
RAMDISK driver initialized: 16 RAM disks of 16384K size 1024 blocksize
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
VP_IDE: IDE controller at PCI slot 0000:00:0f.0
PCI: Via IRQ fixup for 0000:00:0f.0, from 255 to 0
VP_IDE: chipset revision 6
VP_IDE: not 100% native mode: will probe irqs later
VP_IDE: VIA vt8237 (rev 00) IDE UDMA133 controller on pci0000:00:0f.0
ide0: BM-DMA at 0xcc00-0xcc07, BIOS settings: hda:DMA, hdb:DMA
ide1: BM-DMA at 0xcc08-0xcc0f, BIOS settings: hdc:DMA, hdd:DMA
-------------------------------------------------------------------------------------------------------------------------
[root at bywater ~]# rpm --query mythtv
mythtv-0.18.1-117.rhfc4.at
-------------------------------------------------------------------------------------------------------------------------
More information about the mythtv-users
mailing list