[alsa-devel] Alsa: USB Class 2 Audio soundcard device disappears suddenly
Daniel Mack
zonque at gmail.com
Tue Jul 31 13:38:20 CEST 2012
On 31.07.2012 12:12, Joao Bonina wrote:
>
>
> It doesn't show anything when that happens.
Well, it shows:
[ 349.789200] hub 1-0:1.0: port 4 disabled by hub (EMI?), re-enabling...
I guess this about the time when the streaming stops? How does your USB
wiring setup look like and what kind of system is that? Smells like a
hardware issue, to be honest. You could do some stress-testing by
transferring huge amounts of data from one USB storage media to another.
Also try replacing the cables maybe.
I'm Cc'ing the linux-usb list, maybe someone there has an idea.
Daniel
>
> Looking at dmesg (I'm attaching it), it shows this:
> [ 350.170478] usb 1-4: config 1 has an invalid interface number: 3 but max is 2
> [ 350.170500] usb 1-4: config 1 has no interface number 2
> [ 350.170843] usb 1-4: config 1 has an invalid interface number: 3 but max is 2
> [ 350.170864] usb 1-4: config 1 has no interface number 2
> [ 350.171344] usb 1-4: New USB device found, idVendor=21b4, idProduct=0230
>
> [ 350.171366] usb 1-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
> [ 350.171385] usb 1-4: Product: Ayre USB Interface
> [ 350.171401] usb 1-4: Manufacturer: Ayre Acoustics
> [ 350.171418] usb 1-4: SerialNumber: (C) 2010 XMOS/Wavelength Audio
>
>
> Don't know if those 'invalid interface number' messages are relevant for the issue.
>
> Joao
>
>
> ----- Original Message -----
> From: Daniel Mack <zonque at gmail.com>
> To: Joao Bonina <bonina_2001 at yahoo.com>
> Cc: "alsa-devel at alsa-project.org" <alsa-devel at alsa-project.org>
> Sent: Tuesday, 31 July 2012, 6:24
> Subject: Re: [alsa-devel] Alsa: USB Class 2 Audio soundcard device disappears suddenly
>
> On 31.07.2012 00:32, Joao Bonina wrote:
>> Hi,
>>
>> I'm using an USB Class 2 Audio DAC (basically a soundcard) with my Linux box and MPD software.
>>
>> It works great when playing files stored in a remote share, but when
>> playing files from an USB pen, it stops playing in a few minutes.
>>
>> Mpd.log shows this:
>>
>> Code:
>> Jul 30 13:03 : output: "USB" [alsa] failed to play: No such device
>> Jul 30 13:03 : output: closed plugin=alsa name="USB"
>> ALSA lib pcm_hw.c:1401:(_snd_pcm_hw_open) Invalid value for card
>> Jul 30 13:03 : output: Failed to open "USB" [alsa]: Failed to open ALSA device "hw:0,0": No such file or directoryIt seems to be somewhat related to the USB bus not being able to
>> cope with both PCM streaming to the soundcard and reading from the flash pen simultaneously, I guess.
>>
>> So, anybody faced this issue previously and can provide some hints to solve this?
>>
>> MPD is 0.17, kernel is 3.2.17, alsa-utils is 1.0.25.
>
> Does the kernel log or 'dmesg' show anything weird what that happens?
>
>
> Daniel
>
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[ 0.000000] Initializing cgroup subsys cpuset
[ 0.000000] Initializing cgroup subsys cpu
[ 0.000000] Linux version 3.2.17-rt28 (root at debian) (gcc version 4.4.5 (Debian 4.4.5-8) ) #1 PREEMPT RT Sat Jul 28 23:51:42 WEST 2012
[ 0.000000] KERNEL supported cpus:
[ 0.000000] AMD AuthenticAMD
[ 0.000000] BIOS-provided physical RAM map:
[ 0.000000] BIOS-e820: 0000000000000000 - 000000000009e800 (usable)
[ 0.000000] BIOS-e820: 000000000009e800 - 00000000000a0000 (reserved)
[ 0.000000] BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
[ 0.000000] BIOS-e820: 0000000000100000 - 000000000f7c0000 (usable)
[ 0.000000] BIOS-e820: 00000000ffff0000 - 0000000100000000 (reserved)
[ 0.000000] Notice: NX (Execute Disable) protection missing in CPU!
[ 0.000000] DMI not present or invalid.
[ 0.000000] e820 update range: 0000000000000000 - 0000000000010000 (usable) ==> (reserved)
[ 0.000000] e820 remove range: 00000000000a0000 - 0000000000100000 (usable)
[ 0.000000] last_pfn = 0xf7c0 max_arch_pfn = 0x100000
[ 0.000000] initial memory mapped : 0 - 01800000
[ 0.000000] Base memory trampoline at [c009d000] 9d000 size 4096
[ 0.000000] init_memory_mapping: 0000000000000000-000000000f7c0000
[ 0.000000] 0000000000 - 0000400000 page 4k
[ 0.000000] 0000400000 - 000f400000 page 2M
[ 0.000000] 000f400000 - 000f7c0000 page 4k
[ 0.000000] kernel direct mapping tables up to f7c0000 @ 17fb000-1800000
[ 0.000000] RAMDISK: 0b7cd000 - 0ba10000
[ 0.000000] ACPI Error: A valid RSDP was not found (20110623/tbxfroot-219)
[ 0.000000] 0MB HIGHMEM available.
[ 0.000000] 247MB LOWMEM available.
[ 0.000000] mapped low ram: 0 - 0f7c0000
[ 0.000000] low ram: 0 - 0f7c0000
[ 0.000000] Zone PFN ranges:
[ 0.000000] DMA 0x00000010 -> 0x00001000
[ 0.000000] Normal 0x00001000 -> 0x0000f7c0
[ 0.000000] HighMem empty
[ 0.000000] Movable zone start PFN for each node
[ 0.000000] early_node_map[2] active PFN ranges
[ 0.000000] 0: 0x00000010 -> 0x0000009e
[ 0.000000] 0: 0x00000100 -> 0x0000f7c0
[ 0.000000] On node 0 totalpages: 63310
[ 0.000000] free_area_init_node: node 0, pgdat c13303e0, node_mem_map cf5cf200
[ 0.000000] DMA zone: 32 pages used for memmap
[ 0.000000] DMA zone: 0 pages reserved
[ 0.000000] DMA zone: 3950 pages, LIFO batch:0
[ 0.000000] Normal zone: 464 pages used for memmap
[ 0.000000] Normal zone: 58864 pages, LIFO batch:15
[ 0.000000] Allocating PCI resources starting at f7c0000 (gap: f7c0000:f0830000)
[ 0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
[ 0.000000] pcpu-alloc: [0] 0
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 62814
[ 0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-3.2.17-rt28 root=UUID=db00af1b-7a21-4968-9087-92bb7cb92ee0 ro quiet clocksource=acpi_pm maxcpus=1
[ 0.000000] PID hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.000000] Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
[ 0.000000] Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
[ 0.000000] Initializing CPU#0
[ 0.000000] Initializing HighMem for node 0 (00000000:00000000)
[ 0.000000] Memory: 244832k/253696k available (2169k kernel code, 8408k reserved, 1112k data, 260k init, 0k highmem)
[ 0.000000] virtual kernel memory layout:
[ 0.000000] fixmap : 0xfffe5000 - 0xfffff000 ( 104 kB)
[ 0.000000] pkmap : 0xff800000 - 0xffc00000 (4096 kB)
[ 0.000000] vmalloc : 0xcffc0000 - 0xff7fe000 ( 760 MB)
[ 0.000000] lowmem : 0xc0000000 - 0xcf7c0000 ( 247 MB)
[ 0.000000] .init : 0xc1335000 - 0xc1376000 ( 260 kB)
[ 0.000000] .data : 0xc121e645 - 0xc1334980 (1112 kB)
[ 0.000000] .text : 0xc1000000 - 0xc121e645 (2169 kB)
[ 0.000000] Checking if this processor honours the WP bit even in supervisor mode...Ok.
[ 0.000000] NR_IRQS:16 nr_irqs:16 16
[ 0.000000] CPU 0 irqstacks, hard=cf008000 soft=cf00a000
[ 0.000000] Console: colour VGA+ 80x25
[ 0.000000] console [tty0] enabled
[ 0.000000] Fast TSC calibration using PIT
[ 0.000000] Detected 498.120 MHz processor.
[ 0.002005] Calibrating delay loop (skipped), value calculated using timer frequency.. 996.24 BogoMIPS (lpj=498120)
[ 0.002033] pid_max: default: 32768 minimum: 301
[ 0.002333] Mount-cache hash table entries: 512
[ 0.003245] Initializing cgroup subsys cpuacct
[ 0.003264] Initializing cgroup subsys devices
[ 0.003278] Initializing cgroup subsys freezer
[ 0.003292] Initializing cgroup subsys net_cls
[ 0.003408] CPU: Geode(TM) Integrated Processor by AMD PCS stepping 02
[ 0.003630] Performance Events: no PMU driver, software events only.
[ 0.004660] devtmpfs: initialized
[ 0.005498] print_constraints: dummy:
[ 0.005739] NET: Registered protocol family 16
[ 0.007809] PCI: PCI BIOS revision 2.10 entry at 0xfa980, last bus=0
[ 0.011107] bio: create slab <bio-0> at 0
[ 0.011435] ACPI: Interpreter disabled.
[ 0.011763] PCI: Probing PCI hardware
[ 0.011777] PCI: Probing PCI hardware (bus 00)
[ 0.012136] pci 0000:00:01.0: [1022:2080] type 0 class 0x000600
[ 0.012302] pci 0000:00:01.0: reg 10: [io 0xac1c-0xac1f]
[ 0.013302] pci 0000:00:01.1: [1022:2081] type 0 class 0x000300
[ 0.013698] pci 0000:00:01.1: reg 10: [mem 0xee000000-0xeeffffff]
[ 0.014029] pci 0000:00:01.1: reg 14: [mem 0xeffec000-0xeffeffff]
[ 0.014327] pci 0000:00:01.1: reg 18: [mem 0xeffe8000-0xeffebfff]
[ 0.014625] pci 0000:00:01.1: reg 1c: [mem 0xefff8000-0xefffbfff]
[ 0.014923] pci 0000:00:01.1: reg 20: [mem 0xefff4000-0xefff7fff]
[ 0.015824] pci 0000:00:01.2: [1022:2082] type 0 class 0x001010
[ 0.016241] pci 0000:00:01.2: reg 10: [mem 0xefff0000-0xefff3fff]
[ 0.018178] pci 0000:00:0d.0: [1106:3053] type 0 class 0x000200
[ 0.018275] pci 0000:00:0d.0: reg 10: [io 0xfc00-0xfcff]
[ 0.018337] pci 0000:00:0d.0: reg 14: [mem 0xeffff000-0xeffff0ff]
[ 0.018649] pci 0000:00:0d.0: supports D1 D2
[ 0.018666] pci 0000:00:0d.0: PME# supported from D0 D1 D2 D3hot D3cold
[ 0.018698] pci 0000:00:0d.0: PME# disabled
[ 0.018874] pci 0000:00:0f.0: [1022:2090] type 0 class 0x000601
[ 0.019226] pci 0000:00:0f.0: reg 10: [io 0x6000-0x6007]
[ 0.019568] pci 0000:00:0f.0: reg 14: [io 0x6100-0x61ff]
[ 0.019910] pci 0000:00:0f.0: reg 18: [io 0x6200-0x623f]
[ 0.020348] pci 0000:00:0f.0: reg 1c: [io 0x0000-0x001f]
[ 0.020696] pci 0000:00:0f.0: reg 20: [io 0x9d00-0x9d7f]
[ 0.021025] pci 0000:00:0f.0: reg 24: [io 0x9c00-0x9c3f]
[ 0.021699] pci 0000:00:0f.2: [1022:209a] type 0 class 0x000101
[ 0.023147] pci 0000:00:0f.2: reg 20: [io 0xff00-0xff0f]
[ 0.024176] pci 0000:00:0f.5: [1022:2095] type 0 class 0x000c03
[ 0.024640] pci 0000:00:0f.5: reg 10: [mem 0xefffe000-0xefffefff]
[ 0.026638] pci 0000:00:0f.5: PME# supported from D0 D3hot D3cold
[ 0.026741] pci 0000:00:0f.5: PME# disabled
[ 0.028580] pci 0000:00:0f.0: NatSemi IRQ router [1022:2090]
[ 0.028818] PCI: pci_cache_line_size set to 32 bytes
[ 0.029267] reserve RAM buffer: 000000000009e800 - 000000000009ffff
[ 0.029285] reserve RAM buffer: 000000000f7c0000 - 000000000fffffff
[ 0.029781] Switching to clocksource pit
[ 0.029945] pnp: PnP ACPI: disabled
[ 0.040779] PCI: max bus depth: 0 pci_try_num: 1
[ 0.040824] pci 0000:00:0f.0: BAR 3: assigned [io 0x1000-0x101f]
[ 0.040922] pci 0000:00:0f.0: BAR 3: set to [io 0x1000-0x101f] (PCI address [0x1000-0x101f])
[ 0.040948] pci_bus 0000:00: resource 0 [io 0x0000-0xffff]
[ 0.040969] pci_bus 0000:00: resource 1 [mem 0x00000000-0xffffffff]
[ 0.041151] NET: Registered protocol family 2
[ 0.041367] IP route cache hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.041814] TCP established hash table entries: 8192 (order: 4, 65536 bytes)
[ 0.042067] TCP bind hash table entries: 8192 (order: 5, 196608 bytes)
[ 0.042795] TCP: Hash tables configured (established 8192 bind 8192)
[ 0.042810] TCP reno registered
[ 0.042829] UDP hash table entries: 128 (order: 1, 8192 bytes)
[ 0.042902] UDP-Lite hash table entries: 128 (order: 1, 8192 bytes)
[ 0.043221] NET: Registered protocol family 1
[ 0.043341] pci 0000:00:01.1: Boot video device
[ 0.043825] PCI: setting IRQ 5 as level-triggered
[ 0.043844] pci 0000:00:0f.5: assigned PCI INT D -> IRQ 5
[ 0.044355] PCI: CLS 32 bytes, default 32
[ 0.044636] Unpacking initramfs...
[ 0.515824] Freeing initrd memory: 2316k freed
[ 0.518564] platform rtc_cmos: registered platform RTC device (no PNP device found)
[ 0.519194] scx200: NatSemi SCx200 Driver
[ 0.519876] audit: initializing netlink socket (disabled)
[ 0.519921] type=2000 audit(1343728315.518:1): initialized
[ 0.708277] HugeTLB registered 4 MB page size, pre-allocated 0 pages
[ 0.708903] VFS: Disk quotas dquot_6.5.2
[ 0.708975] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[ 0.709449] msgmni has been set to 482
[ 0.710148] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 253)
[ 0.710166] io scheduler noop registered
[ 0.710179] io scheduler deadline registered
[ 0.710236] io scheduler cfq registered (default)
[ 0.791206] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[ 0.812106] serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
[ 0.832959] serial8250: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A
[ 0.834642] i8042: PNP: No PS/2 controller found. Probing ports directly.
[ 0.837231] serio: i8042 KBD port at 0x60,0x64 irq 1
[ 0.837273] serio: i8042 AUX port at 0x60,0x64 irq 12
[ 0.838001] rtc_cmos rtc_cmos: rtc core: registered rtc_cmos as rtc0
[ 0.838225] rtc0: alarms up to one day, 114 bytes nvram
[ 0.838693] rtc-test rtc-test.0: rtc core: registered test as rtc1
[ 0.839112] rtc-test rtc-test.1: rtc core: registered test as rtc2
[ 0.839141] cpuidle: using governor ladder
[ 0.839570] TCP cubic registered
[ 0.839727] NET: Registered protocol family 10
[ 0.840468] Mobile IPv6
[ 0.840483] NET: Registered protocol family 17
[ 0.840508] Registering the dns_resolver key type
[ 0.841224] registered taskstats version 1
[ 0.842190] rtc_cmos rtc_cmos: setting system clock to 2012-07-31 09:51:56 UTC (1343728316)
[ 0.842994] Freeing unused kernel memory: 260k freed
[ 0.843603] Write protecting the kernel text: 2172k
[ 0.843737] Write protecting the kernel read-only data: 948k
[ 0.933920] udev[44]: starting version 164
[ 1.523045] Switching to clocksource tsc
[ 1.567124] SCSI subsystem initialized
[ 2.094375] libata version 3.00 loaded.
[ 2.104990] pata_amd 0000:00:0f.2: version 0.4.1
[ 2.112743] scsi0 : pata_amd
[ 2.113658] scsi1 : pata_amd
[ 2.113959] ata1: PATA max UDMA/100 cmd 0x1f0 ctl 0x3f6 bmdma 0xff00 irq 14
[ 2.113980] ata2: PATA max UDMA/100 cmd 0x170 ctl 0x376 bmdma 0xff08 irq 15
[ 2.267206] spurious 8259A interrupt: IRQ7.
[ 2.276376] ata1.00: CFA: TS4GCF133, 20110407, max UDMA/66
[ 2.276397] ata1.00: 7831152 sectors, multi 0: LBA
[ 2.276438] ata1.01: ATA-0: PQI IDE DiskOnModule, YUAN1026, max UDMA/33
[ 2.276460] ata1.01: 1015056 sectors, multi 0: LBA
[ 2.283283] ata1.00: configured for UDMA/66
[ 2.286273] ata1.01: configured for UDMA/33
[ 2.297413] scsi 0:0:0:0: Direct-Access ATA TS4GCF133 2011 PQ: 0 ANSI: 5
[ 2.299255] scsi 0:0:1:0: Direct-Access ATA PQI IDE DiskOnMo YUAN PQ: 0 ANSI: 5
[ 2.301427] ata2: port disabled--ignoring
[ 2.350975] sd 0:0:0:0: [sda] 7831152 512-byte logical blocks: (4.00 GB/3.73 GiB)
[ 2.351297] sd 0:0:0:0: [sda] Write Protect is off
[ 2.351319] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
[ 2.351430] sd 0:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[ 2.354674] sd 0:0:1:0: [sdb] 1015056 512-byte logical blocks: (519 MB/495 MiB)
[ 2.354919] sd 0:0:1:0: [sdb] Write Protect is off
[ 2.354940] sd 0:0:1:0: [sdb] Mode Sense: 00 3a 00 00
[ 2.355347] sd 0:0:1:0: [sdb] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[ 2.356127] sda: sda1 sda2
[ 2.359915] sdb: unknown partition table
[ 2.364252] sd 0:0:0:0: [sda] Attached SCSI removable disk
[ 2.364290] sd 0:0:1:0: [sdb] Attached SCSI disk
[ 2.854524] EXT3-fs (sda1): mounted filesystem with ordered data mode
[ 2.855667] kjournald starting. Commit interval 5 seconds
[ 3.651393] udev[161]: starting version 164
[ 4.021770] AMD Geode RNG detected
[ 4.055504] cs5535-mfd 0000:00:0f.0: 5 devices registered.
[ 4.063278] PCI: setting IRQ 11 as level-triggered
[ 4.063301] Geode LX AES 0000:00:01.2: found PCI INT A -> IRQ 11
[ 4.064184] pci 0000:00:01.1: IRQ routing conflict: have IRQ 10, want IRQ 11
[ 4.064240] Geode LX AES 0000:00:01.2: IRQ routing conflict: have IRQ 10, want IRQ 11
[ 4.086509] via_rhine: v1.10-LK1.5.0 2010-10-09 Written by Donald Becker
[ 4.106113] geode-aes: GEODE AES engine enabled.
[ 4.106844] PCI: setting IRQ 10 as level-triggered
[ 4.106866] via-rhine 0000:00:0d.0: found PCI INT A -> IRQ 10
[ 4.107002] via-rhine 0000:00:0d.0: IRQ routing conflict: have IRQ 11, want IRQ 10
[ 4.107192] via-rhine 0000:00:0d.0: setting latency timer to 64
[ 4.184403] via-rhine 0000:00:0d.0: eth0: VIA Rhine III (Management Adapter) at 0xeffff000, 00:0d:b9:0e:0d:28, IRQ 11
[ 4.199971] via-rhine 0000:00:0d.0: eth0: MII PHY found at address 1, status 0x786d advertising 05e1 Link cde1
[ 4.464417] cs5535-mfgpt cs5535-mfgpt: reserved resource region [io 0x6200-0x623f]
[ 4.464446] cs5535-mfgpt cs5535-mfgpt: 4 MFGPT timers available
[ 4.592612] cs5535-gpio cs5535-gpio: reserved resource region [io 0x6100-0x61ff]
[ 4.592761] cs5535-gpio cs5535-gpio: GPIO support successfully loaded.
[ 4.630513] cs5535-smb cs5535-smb: SCx200 device 'CS5535 ACB0' registered
[ 4.731332] usbcore: registered new interface driver usbfs
[ 4.731454] usbcore: registered new interface driver hub
[ 4.741190] usbcore: registered new device driver usb
[ 4.775581] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 4.775826] ehci_hcd 0000:00:0f.5: found PCI INT D -> IRQ 5
[ 4.785390] ehci_hcd 0000:00:0f.5: setting latency timer to 64
[ 4.785462] ehci_hcd 0000:00:0f.5: EHCI Host Controller
[ 4.785558] ehci_hcd 0000:00:0f.5: new USB bus registered, assigned bus number 1
[ 4.814153] ehci_hcd 0000:00:0f.5: irq 5, io mem 0xefffe000
[ 4.820074] ehci_hcd 0000:00:0f.5: USB 2.0 started, EHCI 1.00
[ 4.820198] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[ 4.820220] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 4.820239] usb usb1: Product: EHCI Host Controller
[ 4.820255] usb usb1: Manufacturer: Linux 3.2.17-rt28 ehci_hcd
[ 4.820272] usb usb1: SerialNumber: 0000:00:0f.5
[ 4.825364] hub 1-0:1.0: USB hub found
[ 4.825394] hub 1-0:1.0: 4 ports detected
[ 5.127110] usb 1-2: new high-speed USB device number 2 using ehci_hcd
[ 5.241789] usb 1-2: New USB device found, idVendor=1a40, idProduct=0201
[ 5.241812] usb 1-2: New USB device strings: Mfr=0, Product=1, SerialNumber=0
[ 5.241831] usb 1-2: Product: USB 2.0 Hub [MTT]
[ 5.242719] hub 1-2:1.0: USB hub found
[ 5.242905] hub 1-2:1.0: 7 ports detected
[ 5.346116] usb 1-3: new high-speed USB device number 3 using ehci_hcd
[ 5.465393] usb 1-3: New USB device found, idVendor=0951, idProduct=1643
[ 5.465416] usb 1-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 5.465434] usb 1-3: Product: DataTraveler G3
[ 5.465450] usb 1-3: Manufacturer: Kingston
[ 5.465466] usb 1-3: SerialNumber: 001CC0EC346CBC51171B0070
[ 5.569072] usb 1-4: new high-speed USB device number 4 using ehci_hcd
[ 5.683467] usb 1-4: config 1 has an invalid interface number: 3 but max is 2
[ 5.683489] usb 1-4: config 1 has no interface number 2
[ 5.683837] usb 1-4: config 1 has an invalid interface number: 3 but max is 2
[ 5.683858] usb 1-4: config 1 has no interface number 2
[ 5.684338] usb 1-4: New USB device found, idVendor=21b4, idProduct=0230
[ 5.684360] usb 1-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 5.684379] usb 1-4: Product: Ayre USB Interface
[ 5.684395] usb 1-4: Manufacturer: Ayre Acoustics
[ 5.684411] usb 1-4: SerialNumber: (C) 2010 XMOS/Wavelength Audio
[ 5.796093] Initializing USB Mass Storage driver...
[ 5.796584] scsi2 : usb-storage 1-3:1.0
[ 5.798866] usbcore: registered new interface driver usb-storage
[ 5.798882] USB Mass Storage support registered.
[ 6.022209] usbcore: registered new interface driver snd-usb-audio
[ 6.878244] scsi 2:0:0:0: Direct-Access Kingston DataTraveler G3 PMAP PQ: 0 ANSI: 0 CCS
[ 7.070956] EXT3-fs (sda1): using internal journal
[ 7.256508] fuse init (API version 7.17)
[ 8.436629] sd 2:0:0:0: [sdc] 61408128 512-byte logical blocks: (31.4 GB/29.2 GiB)
[ 8.437229] sd 2:0:0:0: [sdc] Write Protect is off
[ 8.437251] sd 2:0:0:0: [sdc] Mode Sense: 23 00 00 00
[ 8.437860] sd 2:0:0:0: [sdc] No Caching mode page present
[ 8.437878] sd 2:0:0:0: [sdc] Assuming drive cache: write through
[ 8.443364] sd 2:0:0:0: [sdc] No Caching mode page present
[ 8.443383] sd 2:0:0:0: [sdc] Assuming drive cache: write through
[ 8.464206] sdc: sdc1
[ 8.470498] sd 2:0:0:0: [sdc] No Caching mode page present
[ 8.470517] sd 2:0:0:0: [sdc] Assuming drive cache: write through
[ 8.470538] sd 2:0:0:0: [sdc] Attached SCSI removable disk
[ 8.535321] w83627hf: w83627hf: Found W83627HF chip at 0x290
[ 8.583768] ppdev: user-space parallel port driver
[ 8.611663] parport0: PC-style at 0x378 (0x778) [PCSPP,TRISTATE,EPP]
[ 8.612355] parport0: irq 7 detected
[ 9.621503] EXT3-fs (sdb): warning: maximal mount count reached, running e2fsck is recommended
[ 9.621645] kjournald starting. Commit interval 5 seconds
[ 9.635548] EXT3-fs (sdb): using internal journal
[ 9.635571] EXT3-fs (sdb): mounted filesystem with ordered data mode
[ 9.643714] EXT3-fs (sda2): mounted filesystem with ordered data mode
[ 9.646086] kjournald starting. Commit interval 5 seconds
[ 11.183985] via-rhine 0000:00:0d.0: eth0: link up, 100Mbps, full-duplex, lpa 0xCDE1
[ 11.805579] FAT-fs (sdc1): utf8 is not a recommended IO charset for FAT filesystems, filesystem will be case sensitive!
[ 22.082042] eth0: no IPv6 routers present
[ 123.396170] hub 1-0:1.0: port 4 disabled by hub (EMI?), re-enabling...
[ 123.396194] usb 1-4: USB disconnect, device number 4
[ 123.661067] usb 1-4: new high-speed USB device number 5 using ehci_hcd
[ 123.775498] usb 1-4: config 1 has an invalid interface number: 3 but max is 2
[ 123.775520] usb 1-4: config 1 has no interface number 2
[ 123.775865] usb 1-4: config 1 has an invalid interface number: 3 but max is 2
[ 123.775886] usb 1-4: config 1 has no interface number 2
[ 123.776366] usb 1-4: New USB device found, idVendor=21b4, idProduct=0230
[ 123.776387] usb 1-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 123.776406] usb 1-4: Product: Ayre USB Interface
[ 123.776422] usb 1-4: Manufacturer: Ayre Acoustics
[ 123.776439] usb 1-4: SerialNumber: (C) 2010 XMOS/Wavelength Audio
[ 293.957030] sched: RT throttling activated
[ 349.789200] hub 1-0:1.0: port 4 disabled by hub (EMI?), re-enabling...
[ 349.789224] usb 1-4: USB disconnect, device number 5
[ 350.056082] usb 1-4: new high-speed USB device number 6 using ehci_hcd
[ 350.170478] usb 1-4: config 1 has an invalid interface number: 3 but max is 2
[ 350.170500] usb 1-4: config 1 has no interface number 2
[ 350.170843] usb 1-4: config 1 has an invalid interface number: 3 but max is 2
[ 350.170864] usb 1-4: config 1 has no interface number 2
[ 350.171344] usb 1-4: New USB device found, idVendor=21b4, idProduct=0230
[ 350.171366] usb 1-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 350.171385] usb 1-4: Product: Ayre USB Interface
[ 350.171401] usb 1-4: Manufacturer: Ayre Acoustics
[ 350.171418] usb 1-4: SerialNumber: (C) 2010 XMOS/Wavelength Audio
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