Hi,
My sister's Yarvik PMP400 MP4 player refuses to stay connected on any
kernel version and on any computer I try. The player is not broken and
should not require special drivers, as it works with Windows 7 without
installation of third party software or drivers. Using kernel
3.4.0-rc6, here is some dmesg output illustrating the problem:
===== dmesg output =====
[ 1764.765492] usb 2-1.1: new high-speed USB device number 5 using ehci_hcd
[ 1764.859858] scsi8 : usb-storage 2-1.1:1.0
[ 1765.857389] scsi 8:0:0:0: Direct-Access Maxm Media Player
4GB 1.00 PQ: 0 ANSI: 0
[ 1765.858135] scsi 8:0:0:1: Direct-Access Maxm Media Player
4GB 1.00 PQ: 0 ANSI: 0
[ 1765.860585] sd 8:0:0:0: Attached scsi generic sg2 type 0
[ 1765.861296] sd 8:0:0:1: Attached scsi generic sg3 type 0
[ 1765.862402] sd 8:0:0:0: [sdb] 7774208 512-byte logical blocks:
(3.98 GB/3.70 GiB)
[ 1765.880965] usb 2-1.1: USB disconnect, device number 5
[ 1765.887956] sd 8:0:0:0: [sdb] Write Protect is off
[ 1765.887967] sd 8:0:0:0: [sdb] Mode Sense: 03 00 00 00
[ 1765.888008] sd 8:0:0:1: [sdc] Attached SCSI removable disk
[ 1765.888048] sd 8:0:0:0: [sdb] Asking for cache data failed
[ 1765.888059] sd 8:0:0:0: [sdb] Assuming drive cache: write through
[ 1765.888622] sd 8:0:0:0: [sdb] Attached SCSI removable disk
===== end of dmesg output =====
As you can see, the device exposes two scsi disks. One of them is the
internal memory (4GB), the other I think is supposed to give access to
the MicroSD slot in the device. I have only tried connecting the
player without a MicroSD card inserted. Also, you can see that the
device disconnects just over a second after it is connected, and even
before sdb is properly initialized. It doesn't show up in lsusb after
this disconnect, and the screen of the device shows, after a brief
moment of displaying a "connected" icon, a "charging without being
connected" icon.
I was able to obtain lsusb -vvv output by running the command during
the brief time the device is connected:
===== lsusb -vvv output =====
Bus 002 Device 007: ID 177f:0400 Sweex
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x177f Sweex
idProduct 0x0400
bcdDevice 0.00
iManufacturer 1 Yarvik
iProduct 2
iSerial 3 USBV1.00
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 39
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xc0
Self Powered
MaxPower 100mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 3
bInterfaceClass 8 Mass Storage
bInterfaceSubClass 6 SCSI
bInterfaceProtocol 80 Bulk (Zip)
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0020 1x 32 bytes
bInterval 11
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
bNumConfigurations 1
Device Status: 0x0001
Self Powered
===== end of lsusb -vvv output =====
Also, I captured usbmon output, which is available at
http://pastebin.com/ENUYujJy (I hope there isn't any noise in it, I'm
a little new at this). I'd be very grateful if you could help me find
a way to get this device to work with Linux :). Feel free to ask me
for additional (debugging) output.
With regards,
Jesse Feddema
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