Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751861AbWAEWft (ORCPT ); Thu, 5 Jan 2006 17:35:49 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751929AbWAEWfs (ORCPT ); Thu, 5 Jan 2006 17:35:48 -0500 Received: from mustang.oldcity.dca.net ([216.158.38.3]:62416 "HELO mustang.oldcity.dca.net") by vger.kernel.org with SMTP id S1751861AbWAEWfr (ORCPT ); Thu, 5 Jan 2006 17:35:47 -0500 Subject: Re: 2.6.15 USB-Audio produces loud noise From: Lee Revell To: Edgar Toernig Cc: linux-kernel@vger.kernel.org, alsa-devel In-Reply-To: <20060104205347.46f62718.froese@gmx.de> References: <20060104205347.46f62718.froese@gmx.de> Content-Type: text/plain Date: Thu, 05 Jan 2006 17:35:44 -0500 Message-Id: <1136500545.847.61.camel@mindpipe> Mime-Version: 1.0 X-Mailer: Evolution 2.5.3 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 10561 Lines: 265 [added alsa-devel to cc] On Wed, 2006-01-04 at 20:53 +0100, Edgar Toernig wrote: > Hi, > > my USB-speakers only work sporadical with 2.6.15. Sometimes everything's > fine, sometimes they only produces loud noise as if the low and high bytes > are swapped or the samples are not properly aligned. With 2.6.13 I never > had this problem. > > This occures either with alsaplayer or with OSS apps using the kernel > OSS emulation. Furthermore, it seems to be a startup problem. If > playback starts correct it stays correct, if it starts wrong it stays > wrong - at least as long as it keeps streaming. If playback is paused, > the problem may trigger again. > > I tried UP, SMP (P4-HT), gcc-2.95, gcc-3.3.5 - no change. All drivers > build in. > > [dmesg, lspci, and lsusb output below] > > Any fix known? I had a short look at the 2.6.13->15 diffs of usbaudio.c > but they are rather big and I don't even know whether it's an USB or an > Alsa problem... > > Ciao, ET. > > > dmesg: (stripped) > > ACPI: PCI Interrupt 0000:00:13.0[A] -> GSI 19 (level, low) -> IRQ 18 > ohci_hcd 0000:00:13.0: OHCI Host Controller > drivers/usb/core/inode.c: creating file '002' > ohci_hcd 0000:00:13.0: new USB bus registered, assigned bus number 2 > ohci_hcd 0000:00:13.0: irq 18, io mem 0xec304000 > ohci_hcd 0000:00:13.0: resetting from state 'reset', control = 0x0 > ohci_hcd 0000:00:13.0: OHCI controller state > ohci_hcd 0000:00:13.0: OHCI 1.0, NO legacy support registers > ohci_hcd 0000:00:13.0: control 0x083 HCFS=operational CBSR=3 > ohci_hcd 0000:00:13.0: cmdstatus 0x00000 SOC=0 > ohci_hcd 0000:00:13.0: intrstatus 0x00000044 RHSC SF > ohci_hcd 0000:00:13.0: intrenable 0x8000001a MIE UE RD WDH > ohci_hcd 0000:00:13.0: hcca frame #0005 > ohci_hcd 0000:00:13.0: roothub.a 02000203 POTPGT=2 NPS NDP=3(3) > ohci_hcd 0000:00:13.0: roothub.b 00000000 PPCM=0000 DR=0000 > ohci_hcd 0000:00:13.0: roothub.status 00008000 DRWE > ohci_hcd 0000:00:13.0: roothub.status 00008000 DRWE > ohci_hcd 0000:00:13.0: roothub.portstatus [0] 0x00010100 CSC PPS > ohci_hcd 0000:00:13.0: roothub.portstatus [1] 0x00000100 PPS > ohci_hcd 0000:00:13.0: roothub.portstatus [2] 0x00000100 PPS > ohci_hcd 0000:00:13.0: created debug files > usb usb2: default language 0x0409 > usb usb2: new device strings: Mfr=3, Product=2, SerialNumber=1 > usb usb2: Product: OHCI Host Controller > usb usb2: Manufacturer: Linux 2.6.15 ohci_hcd > usb usb2: SerialNumber: 0000:00:13.0 > usb usb2: hotplug > usb usb2: adding 2-0:1.0 (config #1, interface 0) > usb 2-0:1.0: hotplug > hub 2-0:1.0: usb_probe_interface > hub 2-0:1.0: usb_probe_interface - got id > hub 2-0:1.0: USB hub found > hub 2-0:1.0: 3 ports detected > hub 2-0:1.0: standalone hub > hub 2-0:1.0: no power switching (usb 1.0) > hub 2-0:1.0: global over-current protection > hub 2-0:1.0: power on to power good time: 4ms > hub 2-0:1.0: local power source is good > hub 2-0:1.0: no over-current condition exists > hub 2-0:1.0: global over-current protection > hub 2-0:1.0: power on to power good time: 4ms > hub 2-0:1.0: local power source is good > hub 2-0:1.0: no over-current condition exists > hub 2-0:1.0: debounce: port 1: total 100ms stable 100ms status 0x101 > ohci_hcd 0000:00:13.0: GetStatus roothub.portstatus [0] = 0x00100103 PRSC PPS PE > S CCS > usb 2-1: new full speed USB device using ohci_hcd and address 2 > ohci_hcd 0000:00:13.0: GetStatus roothub.portstatus [0] = 0x00100103 PRSC PPS PE > S CCS > usb 2-1: ep0 maxpacket = 8 > usb 2-1: skipped 4 descriptors after interface > usb 2-1: skipped 2 descriptors after interface > usb 2-1: skipped 1 descriptor after endpoint > usb 2-1: default language 0x0409 > usb 2-1: new device strings: Mfr=1, Product=2, SerialNumber=0 > usb 2-1: Product: USB Audio > usb 2-1: Manufacturer: C-Media INC. > usb 2-1: hotplug > usb 2-1: adding 2-1:1.0 (config #1, interface 0) > usb 2-1:1.0: hotplug > usb 2-1: adding 2-1:1.1 (config #1, interface 1) > usb 2-1:1.1: hotplug > drivers/usb/core/inode.c: creating file '002' > Advanced Linux Sound Architecture Driver Version 1.0.10rc3 (Mon Nov 07 13:30:21 > 2005 UTC). > ACPI: PCI Interrupt 0000:00:14.5[B] -> GSI 17 (level, low) -> IRQ 17 > snd-usb-audio 2-1:1.0: usb_probe_interface > snd-usb-audio 2-1:1.0: usb_probe_interface - got id > usbcore: registered new driver snd-usb-audio > ALSA device list: > #0: ATI IXP rev 0 with ALC650F at 0xec305000, irq 17 > #1: C-Media INC. USB Audio at usb-0000:00:13.0-1, full speed > > > lspci: > > 0000:00:13.0 USB Controller: ATI Technologies Inc OHCI USB Controller #1 (rev 01) (prog-if 10 [OHCI]) > Subsystem: Holco Enterprise Co, Ltd/Shuttle Computer: Unknown device f362 > Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- > Status: Cap- 66Mhz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- SERR- Latency: 64, cache line size 20 > Interrupt: pin A routed to IRQ 18 > Region 0: Memory at ec304000 (32-bit, non-prefetchable) [size=4K] > > > lsusb: > > Bus 002 Device 002: ID 0d8c:0001 C-Media Electronics, Inc. USB Speaker > Device Descriptor: > bLength 18 > bDescriptorType 1 > bcdUSB 1.10 > bDeviceClass 0 (Defined at Interface level) > bDeviceSubClass 0 > bDeviceProtocol 0 > bMaxPacketSize0 8 > idVendor 0x0d8c C-Media Electronics, Inc. > idProduct 0x0001 USB Speaker > bcdDevice 0.10 > iManufacturer 1 C-Media INC. > iProduct 2 USB Audio > iSerial 0 > bNumConfigurations 1 > Configuration Descriptor: > bLength 9 > bDescriptorType 2 > wTotalLength 110 > bNumInterfaces 2 > bConfigurationValue 1 > iConfiguration 0 > bmAttributes 0x80 > MaxPower 500mA > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 0 > bAlternateSetting 0 > bNumEndpoints 0 > bInterfaceClass 1 Audio > bInterfaceSubClass 1 Control Device > bInterfaceProtocol 0 > iInterface 0 > AudioControl Interface Descriptor: > bLength 9 > bDescriptorType 36 > bDescriptorSubtype 1 (HEADER) > bcdADC 1.00 > wTotalLength 40 > bInCollection 1 > baInterfaceNr( 0) 1 > AudioControl Interface Descriptor: > bLength 12 > bDescriptorType 36 > bDescriptorSubtype 2 (INPUT_TERMINAL) > bTerminalID 1 > wTerminalType 0x0101 USB Streaming > bAssocTerminal 0 > bNrChannels 2 > wChannelConfig 0x0003 > Left Front (L) > Right Front (R) > iChannelNames 0 > iTerminal 0 > AudioControl Interface Descriptor: > bLength 10 > bDescriptorType 36 > bDescriptorSubtype 6 (FEATURE_UNIT) > bUnitID 13 > bSourceID 1 > bControlSize 1 > bmaControls( 0) 0x03 > Mute > Volume > bmaControls( 1) 0x00 > bmaControls( 2) 0x00 > iFeature 0 > AudioControl Interface Descriptor: > bLength 9 > bDescriptorType 36 > bDescriptorSubtype 3 (OUTPUT_TERMINAL) > bTerminalID 3 > wTerminalType 0x0301 Speaker > bAssocTerminal 0 > bSourceID 13 > iTerminal 0 > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 1 > bAlternateSetting 0 > bNumEndpoints 0 > bInterfaceClass 1 Audio > bInterfaceSubClass 2 Streaming > bInterfaceProtocol 0 > iInterface 0 > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 1 > bAlternateSetting 1 > bNumEndpoints 1 > bInterfaceClass 1 Audio > bInterfaceSubClass 2 Streaming > bInterfaceProtocol 0 > iInterface 0 > AudioStreaming Interface Descriptor: > bLength 7 > bDescriptorType 36 > bDescriptorSubtype 1 (AS_GENERAL) > bTerminalLink 1 > bDelay 1 frames > wFormatTag 1 PCM > AudioStreaming Interface Descriptor: > bLength 11 > bDescriptorType 36 > bDescriptorSubtype 2 (FORMAT_TYPE) > bFormatType 1 (FORMAT_TYPE_I) > bNrChannels 2 > bSubframeSize 2 > bBitResolution 16 > bSamFreqType 1 Discrete > tSamFreq[ 0] 48000 > Endpoint Descriptor: > bLength 9 > bDescriptorType 5 > bEndpointAddress 0x06 EP 6 OUT > bmAttributes 9 > Transfer Type Isochronous > Synch Type Adaptive > Usage Type Data > wMaxPacketSize 0x00c0 1x 192 bytes > bInterval 1 > bRefresh 0 > bSynchAddress 0 > AudioControl Endpoint Descriptor: > bLength 7 > bDescriptorType 37 > bDescriptorSubtype 1 (EP_GENERAL) > bmAttributes 0x00 > bLockDelayUnits 0 Undefined > wLockDelay 0 Undefined > > EOF > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/