[linux-audio-user] Stuttering via HDSP, Cardbus, Multiface? More Info

Timothy Polashek tim at tdpmusic.com
Fri Mar 26 14:22:27 EST 2004


It is great to see others have experienced this problem, and are trying 
to find a solution!

The jitter/granular distortion that Tim (the other Tim!), Ico, and Derek 
describe seems to match exactly what I am experiencing, however I think 
my hardware is completely different.

I wanted to post information about my current state for the record 
before I start experimenting with acpi and all the other suggestions.
I am only on the CCRMA and LAU list, so feel free to forward this info 
to other lists, such as alsa or whatever.

Thanks!

-Tim

----------------------

I am running stock model ACER TavelMate254, which actually seems like a 
decent quality machine:

TM254ELCi, LX.T3206.187
Processor Intel® Pentium® 4 processor 2.80GHz
Memory 512MB Hard Drive 40GB
Optical Drive CD-RW/DVD combo
TFT Display 15.0" XGA
Graphics Intel® Extreme Graphics 2

----------------------

I am running the latest PlanetCCRMA kernel and their alsa flavors.

----------------------

here is my lspci output:

00:00.0 Host bridge: Intel Corp. 82852/855GM Host Bridge (rev 02)
    Flags: bus master, fast devsel, latency 0
    Memory at <unassigned> (32-bit, prefetchable)
    Capabilities: <available only to root>

00:00.1 System peripheral: Intel Corp. 855GM/GME GMCH Memory I/O Control 
Registers (rev 02)
    Subsystem: Acer Incorporated [ALI]: Unknown device 0039
    Flags: bus master, fast devsel, latency 0

00:00.3 System peripheral: Intel Corp. 855GM/GME GMCH Configuration 
Process Registers (rev 02)
    Subsystem: Acer Incorporated [ALI]: Unknown device 0039
    Flags: bus master, fast devsel, latency 0

00:02.0 VGA compatible controller: Intel Corp. 82852/855GM Integrated 
Graphics Device (rev 02) (prog-if 00 [VGA])
    Subsystem: Acer Incorporated [ALI]: Unknown device 0039
    Flags: bus master, fast devsel, latency 0, IRQ 5
    Memory at e8000000 (32-bit, prefetchable) [size=128M]
    Memory at e0000000 (32-bit, non-prefetchable) [size=512K]
    I/O ports at 1800 [size=8]
    Capabilities: <available only to root>

00:02.1 Display controller: Intel Corp. 82852/855GM Integrated Graphics 
Device (rev 02)
    Subsystem: Acer Incorporated [ALI]: Unknown device 0039
    Flags: fast devsel
    Memory at f0000000 (32-bit, prefetchable) [size=128M]
    Memory at e0080000 (32-bit, non-prefetchable) [size=512K]
    Capabilities: <available only to root>

00:1d.0 USB Controller: Intel Corp. 82801DB (ICH4) USB UHCI #1 (rev 03) 
(prog-if 00 [UHCI])
    Subsystem: Acer Incorporated [ALI]: Unknown device 0039
    Flags: bus master, medium devsel, latency 0, IRQ 5
    I/O ports at 1820 [size=32]

00:1d.1 USB Controller: Intel Corp. 82801DB (ICH4) USB UHCI #2 (rev 03) 
(prog-if 00 [UHCI])
    Subsystem: Acer Incorporated [ALI]: Unknown device 0039
    Flags: bus master, medium devsel, latency 0, IRQ 11
    I/O ports at 1840 [size=32]

00:1d.2 USB Controller: Intel Corp. 82801DB (ICH4) USB UHCI #3 (rev 03) 
(prog-if 00 [UHCI])
    Subsystem: Acer Incorporated [ALI]: Unknown device 0039
    Flags: bus master, medium devsel, latency 0, IRQ 4
    I/O ports at 1860 [size=32]

00:1d.7 USB Controller: Intel Corp. 82801DB (ICH4) USB2 EHCI Controller 
(rev 03) (prog-if 20 [EHCI])
    Subsystem: Acer Incorporated [ALI]: Unknown device 0039
    Flags: bus master, medium devsel, latency 0, IRQ 10
    Memory at e0100000 (32-bit, non-prefetchable) [size=1K]
    Capabilities: <available only to root>

00:1e.0 PCI bridge: Intel Corp. 82801BAM/CAM PCI Bridge (rev 83) 
(prog-if 00 [Normal decode])
    Flags: bus master, fast devsel, latency 0
    Bus: primary=00, secondary=02, subordinate=02, sec-latency=64
    I/O behind bridge: 00003000-00003fff
    Memory behind bridge: e0200000-e02fffff
    Prefetchable memory behind bridge: e0500000-e05fffff

00:1f.0 ISA bridge: Intel Corp. 82801DBM LPC Interface Controller (rev 03)
    Flags: bus master, medium devsel, latency 0

00:1f.1 IDE interface: Intel Corp. 82801DBM (ICH4) Ultra ATA Storage 
Controller (rev 03) (prog-if 8a [Master SecP PriP])
    Subsystem: Acer Incorporated [ALI]: Unknown device 0039
    Flags: bus master, medium devsel, latency 0, IRQ 4
    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]
    Memory at 20000000 (32-bit, non-prefetchable) [size=1K]

00:1f.3 SMBus: Intel Corp. 82801DB/DBM (ICH4) SMBus Controller (rev 03)
    Subsystem: Acer Incorporated [ALI]: Unknown device 0039
    Flags: medium devsel, IRQ 10
    I/O ports at 1880 [size=32]

00:1f.5 Multimedia audio controller: Intel Corp. 82801DB (ICH4) AC'97 
Audio Controller (rev 03)
    Subsystem: Acer Incorporated [ALI]: Unknown device 0039
    Flags: bus master, medium devsel, latency 0, IRQ 10
    I/O ports at 1c00 [size=256]
    I/O ports at 18c0 [size=64]
    Memory at e0100c00 (32-bit, non-prefetchable) [size=512]
    Memory at e0100800 (32-bit, non-prefetchable) [size=256]
    Capabilities: <available only to root>

00:1f.6 Modem: Intel Corp. 82801DB (ICH4) AC'97 Modem Controller (rev 
03) (prog-if 00 [Generic])
    Subsystem: Acer Incorporated [ALI]: Unknown device 0038
    Flags: bus master, medium devsel, latency 0, IRQ 10
    I/O ports at 2400 [size=256]
    I/O ports at 2000 [size=128]
    Capabilities: <available only to root>

02:04.0 CardBus bridge: Texas Instruments PCI1250 PC card Cardbus 
Controller (rev 01)
    Subsystem: Acer Incorporated [ALI]: Unknown device 0039
    Flags: bus master, medium devsel, latency 168, IRQ 10
    Memory at 20001000 (32-bit, non-prefetchable) [size=4K]
    Bus: primary=02, secondary=03, subordinate=03, sec-latency=176
    Memory window 0: 20400000-207ff000 (prefetchable)
    Memory window 1: 20800000-20bff000 (prefetchable)
    I/O window 0: 00004000-000040ff
    I/O window 1: 00004400-000044ff
    16-bit legacy interface ports at 0001

02:04.1 CardBus bridge: Texas Instruments PCI1250 PC card Cardbus 
Controller (rev 01)
    Subsystem: Acer Incorporated [ALI]: Unknown device 0039
    Flags: bus master, medium devsel, latency 168, IRQ 10
    Memory at 20002000 (32-bit, non-prefetchable) [size=4K]
    Bus: primary=02, secondary=04, subordinate=04, sec-latency=176
    Memory window 0: 20c00000-20fff000 (prefetchable)
    Memory window 1: 21000000-213ff000 (prefetchable)
    I/O window 0: 00004800-000048ff
    I/O window 1: 00004c00-00004cff
    16-bit legacy interface ports at 0001

02:05.0 Network controller: Harris Semiconductor: Unknown device 3872 
(rev 01)
    Subsystem: AMBIT Microsystem Corp.: Unknown device 0200
    Flags: bus master, medium devsel, latency 64, IRQ 11
    Memory at e0500000 (32-bit, prefetchable) [size=4K]
    Capabilities: <available only to root>

02:0a.0 Ethernet controller: Realtek Semiconductor Co., Ltd. 
RTL-8139/8139C/8139C+ (rev 10)
    Subsystem: Acer Incorporated [ALI]: Unknown device 0039
    Flags: bus master, medium devsel, latency 64, IRQ 11
    I/O ports at 3000 [size=256]
    Memory at e0200000 (32-bit, non-prefetchable) [size=256]
    Expansion ROM at <unassigned> [disabled] [size=64K]
    Capabilities: <available only to root>

03:00.0 Multimedia audio controller: Xilinx Corporation RME Hammerfall 
DSP (rev 0b)
    Flags: bus master, stepping, medium devsel, latency 64, IRQ 10
    Memory at 20800000 (32-bit, non-prefetchable) [size=64K]

----------------------

proc / interrupts.

           CPU0      
  0:     747357          XT-PIC  timer
  1:        699          XT-PIC  keyboard
  2:          0          XT-PIC  cascade
  4:          0          XT-PIC  usb-uhci
  5:          0          XT-PIC  usb-uhci
  8:          1          XT-PIC  rtc
  9:          9          XT-PIC  acpi
 10:          0          XT-PIC  ehci_hcd, Texas Instruments PCI1250 PC 
card Cardbus Controller, Texas Instruments PCI1250 PC card Cardbus 
Controller (#2), hdsp
 11:        106          XT-PIC  usb-uhci, eth0
 12:       9397          XT-PIC  PS/2 Mouse
 14:      21038          XT-PIC  ide0
 15:      11051          XT-PIC  ide1
NMI:          0
ERR:          0




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