Hi,

I bought a cheap usb mp3 player a few weeks ago, which works perfectly under winxp. Under linux, however, I cannot get the thing to work. I re-compiled my custom build kernel, with USB MASS storage, and SCSI support and SCSI drive support (even SCSI general support as module).

Mounting goes just great, I mount with:
mount -t vfat /dev/sda /mnt/mp3

I can read it (after I put some mp3's on it via winxp). When i put a small file on it (a textfile for example), I can unmount it. When i put bigger files on it it (MP3's), it goes wrong. I get outputs like:

Mar 8 23:42:55 multi kernel: lost page write due to I/O error on sda
Mar 8 23:42:55 multi kernel: SCSI error : <0 0 0 0> return code = 0x10070000
Mar 8 23:42:55 multi kernel: end_request: I/O error, dev sda, sector 537
Mar 8 23:42:55 multi kernel: lost page write due to I/O error on sda
Mar 8 23:42:55 multi kernel: SCSI error : <0 0 0 0> return code = 0x10070000
Mar 8 23:42:55 multi kernel: end_request: I/O error, dev sda, sector 538
Mar 8 23:42:55 multi kernel: lost page write due to I/O error on sda
Mar 8 23:42:55 multi kernel: SCSI error : <0 0 0 0> return code = 0x10070000
Mar 8 23:42:55 multi kernel: end_request: I/O error, dev sda, sector 539
Mar 8 23:42:55 multi kernel: lost page write due to I/O error on sda

This is what lsusb says:

Bus 002 Device 002: ID 0dda:0301 Integrated Circuit Solution, Inc.
Bus 002 Device 001: ID 0000:0000
Bus 001 Device 001: ID 0000:0000

lsmod:

Module Size Used by
sd_mod 12944 1
usb_storage 29184 1
snd_emu10k1 95620 0
snd_rawmidi 20192 1 snd_emu10k1
snd_seq_device 6988 2 snd_emu10k1,snd_rawmidi
snd_ac97_codec 71872 1 snd_emu10k1
snd_pcm_oss 48096 0
snd_mixer_oss 17600 1 snd_pcm_oss
snd_pcm 80328 3 snd_emu10k1,snd_ac97_codec,snd_pcm_oss
snd_timer 21316 2 snd_emu10k1,snd_pcm
snd_page_alloc 7620 2 snd_emu10k1,snd_pcm
snd_util_mem 3328 1 snd_emu10k1
snd_hwdep 7328 1 snd_emu10k1
snd 44068 9 snd_emu10k1,snd_rawmidi,snd_seq_device,snd_ac97_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer,sn d_hwdep
sg 30112 0
scsi_mod 115016 3 sd_mod,usb_storage,sg


fdisk -l:

Disk /dev/sda: 262 MB, 262144000 bytes
9 heads, 56 sectors/track, 1015 cylinders
Units = cylinders of 504 * 512 = 258048 bytes

Device Boot Start End Blocks Id System

It looks like this is also an "hardware" issue also (not supported yet?). I cannot find the problem. When i unplug the device, it sometimes contains a mp3-file, but it has a fixed size of 4kb (or something)

I hope it's a think-fault of myself. Hope you guys can do anything with this information.

Thanks in advance,
Frank

/dev/sda is the whole device, use /dev/sda1 for first partition.

Thanks Emerson.
But on my stick, /dev/sda1 is not a valid partition. I found on some other
forum that some USB sticks use the whole device as partition.

I wonder where the SCSI errors come from...

Frank

Dunno, I would experiment with sector sizes a little.

Any advise how to do that? Is there a mount option to obtain it?

Thanks,
Frank

'man mount' and 'man fstab' have plenty of information, but you better look at these yourself.

Yeah i'm that smart
I tried some parameters... but none of these help. I think I should be in the SCSI-emulation section somewhere... unless this
is all managed by the modules... Can anyone tell?

Frank

I also tried older kernels... my current was 2.6.11, i tried from 2.6.7 upwards... none works!

Anybody else?

Frank

I would recommend to find a file system utility capable of analysing fat32 and run it on your player. This is the easiest way to get your parameters right.

That's a good way to continue indeed... will try that!

Thanks alot,
Frank