On Tue, 16 Sep 2003, hellekin wrote:
Hello,
I'm trying to setup a low latency kernel for using with Pd but I'm having trouble finding the right configuration. Pd goes red (DIO errors) as soon as I run it, whatever -audiobuf or -blocksize I choose.
The sound card I use is the internal MAESTRO2 with ALSA 0.9.6.
Can someone point me to useful resources regarding this issue ?
Have you tried both, alsa and oss mode ? Try to run pd -oss and check if you have the same results. In general the Meastro is not really a good sound card.
Guenter
Configuration : Compaq Armada E500 running linux 2.4.21 w/ lowlatency and preempt patches.
$ lspci -vvv 00:00.0 Host bridge: Intel Corp. 440BX/ZX/DX - 82443BX/ZX/DX Host bridge (rev 03) Subsystem: Compaq Computer Corporation Armada M700 Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ >SERR- <PERR+ Latency: 48 Region 0: Memory at 50000000 (32-bit, prefetchable) [size=64M] Capabilities: [a0] AGP version 1.0 Status: RQ=32 Iso- ArqSz=0 Cal=0 SBA+ ITACoh- GART64- HTrans- 64bit- FW- AGP3- Rate=x2 Command: RQ=1 ArqSz=0 Cal=0 SBA+ AGP+ GART64- 64bit- FW- Rate=x2
00:01.0 PCI bridge: Intel Corp. 440BX/ZX/DX - 82443BX/ZX/DX AGP bridge (rev 03) (prog-if 00 [Normal decode]) Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap- 66Mhz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Bus: primary=00, secondary=01, subordinate=01, sec-latency=0 I/O behind bridge: 00002000-00002fff Memory behind bridge: 40000000-410fffff Prefetchable memory behind bridge: fff00000-000fffff BridgeCtl: Parity- SERR- NoISA+ VGA+ MAbort- >Reset- FastB2B+
00:04.0 CardBus bridge: Texas Instruments PCI1225 (rev 01) Subsystem: Compaq Computer Corporation: Unknown device b121 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 48, cache line size 08 Interrupt: pin A routed to IRQ 11 Region 0: Memory at 41100000 (32-bit, non-prefetchable) [size=4K] Bus: primary=00, secondary=02, subordinate=02, sec-latency=176 Memory window 0: 10000000-103ff000 (prefetchable) Memory window 1: 10400000-107ff000 I/O window 0: 00004400-000044ff I/O window 1: 00004800-000048ff BridgeCtl: Parity- SERR- ISA- VGA- MAbort- >Reset+ 16bInt+ PostWrite+ 16-bit legacy interface ports at 0001
00:04.1 CardBus bridge: Texas Instruments PCI1225 (rev 01) Subsystem: Compaq Computer Corporation: Unknown device b121 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 48, cache line size 08 Interrupt: pin A routed to IRQ 11 Region 0: Memory at 41180000 (32-bit, non-prefetchable) [size=4K] Bus: primary=00, secondary=03, subordinate=03, sec-latency=176 Memory window 0: 10800000-10bff000 (prefetchable) Memory window 1: 10c00000-10fff000 I/O window 0: 00004c00-00004cff I/O window 1: 00005400-000054ff BridgeCtl: Parity- SERR- ISA- VGA- MAbort- >Reset- 16bInt- PostWrite+ 16-bit legacy interface ports at 0001
00:07.0 Bridge: Intel Corp. 82371AB/EB/MB PIIX4 ISA (rev 02) Control: I/O+ Mem+ BusMaster+ SpecCycle+ MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 0
00:07.1 IDE interface: Intel Corp. 82371AB/EB/MB PIIX4 IDE (rev 01) (prog-if 80 [Master]) Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 48 Region 4: I/O ports at 3420 [size=16]
00:07.2 USB Controller: Intel Corp. 82371AB/EB/MB PIIX4 USB (rev 01) (prog-if 00 [UHCI]) Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 48 Interrupt: pin D routed to IRQ 11 Region 4: I/O ports at 3400 [size=32]
00:07.3 Bridge: Intel Corp. 82371AB/EB/MB PIIX4 ACPI (rev 03) Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Interrupt: pin ? routed to IRQ 9
00:08.0 Multimedia audio controller: ESS Technology ES1978 Maestro 2E (rev 10) Subsystem: Compaq Computer Corporation Armada M700 Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 8 (500ns min, 6000ns max) Interrupt: pin A routed to IRQ 11 Region 0: I/O ports at 3000 [size=256] Capabilities: [c0] Power Management version 2 Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA PME(D0-,D1+,D2+,D3hot+,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:09.0 Communication controller: Lucent Microelectronics WinModem 56k (rev 01) Subsystem: Compaq Computer Corporation: Unknown device b14e Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Interrupt: pin A routed to IRQ 11 Region 0: Memory at 41200000 (32-bit, non-prefetchable) [size=256] Region 1: I/O ports at 3430 [size=8] Region 2: I/O ports at 3800 [size=256] Capabilities: [f8] Power Management version 2 Flags: PMEClk- DSI+ D1- D2+ AuxCurrent=0mA PME(D0-,D1-,D2+,D3hot+,D3cold+) Status: D0 PME-Enable- DSel=0 DScale=0 PME-
01:00.0 VGA compatible controller: ATI Technologies Inc Rage Mobility P/M AGP 2x (rev 64) (prog-if 00 [VGA]) Subsystem: Compaq Computer Corporation: Unknown device b160 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping+ SERR- FastB2B- Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 64 (2000ns min), cache line size 08 Interrupt: pin A routed to IRQ 11 Region 0: Memory at 40000000 (32-bit, non-prefetchable) [size=16M] Region 1: I/O ports at 2000 [size=256] Region 2: Memory at 41000000 (32-bit, non-prefetchable) [size=4K] Expansion ROM at <unassigned> [disabled] [size=128K] Capabilities: [50] AGP version 1.0 Status: RQ=256 Iso- ArqSz=0 Cal=0 SBA+ ITACoh- GART64- HTrans- 64bit- FW- AGP3- Rate=x1,x2 Command: RQ=1 ArqSz=0 Cal=0 SBA- AGP- GART64- 64bit- FW- Rate=<none> Capabilities: [5c] Power Management version 1 Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME-
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10) Subsystem: Billionton Systems Inc: Unknown device 0200 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 128 (8000ns min, 16000ns max) Interrupt: pin A routed to IRQ 11 Region 0: I/O ports at 4c00 [size=256] Region 1: Memory at 10c00000 (32-bit, non-prefetchable) [size=512] Capabilities: [50] Power Management version 2 Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0-,D1+,D2+,D3hot+,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME-
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