2004-06-22 Gadgets

The MP3 player I ordered arrived! (2004-06-15 Gadgets) It’s a EMP-Z with 256MB of RAM, by beatsounds.

=> 2004-06-15 Gadgets | beatsounds

It doesn’t work!

Damn.

/etc# mount -t vfat /dev/sda1 /mnt/mp3
mount: /dev/sda1: can't read superblock
/etc# cat /proc/bus/usb/devices
T:  Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=12  MxCh= 4
B:  Alloc=  0/900 us ( 0%), #Int=  0, #Iso=  0
D:  Ver= 1.10 Cls=09(hub  ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
P:  Vendor=0000 ProdID=0000 Rev= 2.06
S:  Manufacturer=Linux 2.6.6-1-686 ohci_hcd
S:  Product=Advanced Micro Devices [AMD] AMD-756 [Viper] USB
S:  SerialNumber=0000:00:07.4
C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr=  0mA
I:  If#= 0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub
E:  Ad=81(I) Atr=03(Int.) MxPS=   2 Ivl=255ms

T:  Bus=01 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#=  4 Spd=12  MxCh= 0
D:  Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
P:  Vendor=10cb ProdID=8001 Rev= 1.00
S:  Manufacturer=Eratech Co.,
S:  Product=BEATSOUNDS P
C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=100mA
I:  If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage
E:  Ad=81(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
E:  Ad=02(O) Atr=02(Bulk) MxPS=  64 Ivl=0ms

There it is!

It seems that somebody else has also had the same problem... ¹ A patch is proposed for Linux 2.6.7... 😢

=> ¹

And here I was, expecting it to always work. 🙁 ²

=> ²

I think I will have to build a custom kernel... Getting kernel-package, kernel-tree-2.6.6, etc. After some complications with my initrd.img, I finally got the new kernel to boot.

Then I tried patching the _usr_local/src/kernel-source-2.6.6/drivers/usb/core/config.c file which I had copied to tmp. I used the patch from the thread on linux-usb-users linked to above ³:

=> ³

/tmp $ cat usb.patch | patch -l
patching file config.c
Hunk #1 succeeded at 420 (offset -45 lines).
Hunk #2 succeeded at 454 (offset -45 lines).

Weird differences... But what the heck...

Recompiled, installed – it works! I now have in my _etc_fstab:

/dev/sdb        /mnt/mp3        vfat    noauto,user                     0       0

I then started copying files to the player... When I reached the storage limit, however, I got very weird error messages. I basically had to unmount the player and mount it again, before being able to do anything once this happened.

Here’s some output from _var_logs/syslog:

Jun 23 02:16:59 confusibombus kernel: ohci_hcd 0000:00:07.4: Advanced Micro Devices [AMD] AMD-756 [Viper] USB
Jun 23 02:16:59 confusibombus kernel: ohci_hcd 0000:00:07.4: irq 5, pci mem c8909000
Jun 23 02:16:59 confusibombus kernel: ohci_hcd 0000:00:07.4: new USB bus registered, assigned bus number 1
Jun 23 02:16:59 confusibombus kernel: ohci_hcd 0000:00:07.4: AMD756 erratum 4 workaround
Jun 23 02:16:59 confusibombus kernel: hub 1-0:1.0: USB hub found
Jun 23 02:16:59 confusibombus kernel: hub 1-0:1.0: 4 ports detected
Jun 23 02:16:59 confusibombus kernel: usb 1-1: new full speed USB device using address 2
Jun 23 02:16:59 confusibombus kernel: usb 1-2: new full speed USB device using address 3
Jun 23 02:16:59 confusibombus kernel: SCSI subsystem initialized
Jun 23 02:16:59 confusibombus kernel: usb_storage: Unknown symbol scsi_report_device_reset
Jun 23 02:16:59 confusibombus kernel: usb_storage: Unknown symbol scsi_remove_host
Jun 23 02:16:59 confusibombus kernel: usb_storage: Unknown symbol scsi_host_put
Jun 23 02:16:59 confusibombus kernel: usb_storage: Unknown symbol scsi_scan_host
Jun 23 02:16:59 confusibombus kernel: usb_storage: Unknown symbol scsi_add_host
Jun 23 02:16:59 confusibombus kernel: usb_storage: Unknown symbol scsi_host_alloc
Jun 23 02:16:59 confusibombus kernel: Initializing USB Mass Storage driver...
Jun 23 02:16:59 confusibombus kernel: usb-storage: This device (07cf,1001,1000 S 05 P 01) has an unneeded Protocol entry in unusual_devs.h
Jun 23 02:16:59 confusibombus kernel:    Please send a copy of this message to 
Jun 23 02:16:59 confusibombus kernel: scsi0 : SCSI emulation for USB Mass Storage devices
Jun 23 02:16:59 confusibombus kernel:   Vendor: Casio     Model: QV DigitalCamera  Rev: 1000
Jun 23 02:16:59 confusibombus kernel:   Type:   Direct-Access                      ANSI SCSI revision: 02
Jun 23 02:16:59 confusibombus kernel: USB Mass Storage device found at 2
...
Jun 23 02:16:59 confusibombus kernel: scsi1 : SCSI emulation for USB Mass Storage devices
Jun 23 02:16:59 confusibombus kernel:   Vendor:           Model:                   Rev:
Jun 23 02:16:59 confusibombus kernel:   Type:   Direct-Access                      ANSI SCSI revision: 02
Jun 23 02:16:59 confusibombus kernel: SCSI device sda: 250880 512-byte hdwr sectors (128 MB)
Jun 23 02:16:59 confusibombus kernel: sda: assuming Write Enabled
Jun 23 02:16:59 confusibombus kernel: sda: assuming drive cache: write through
Jun 23 02:16:59 confusibombus kernel:  /dev/scsi/host0/bus0/target0/lun0: p1
Jun 23 02:16:59 confusibombus kernel: Attached scsi removable disk sda at scsi0, channel 0, id 0, lun 0
Jun 23 02:16:59 confusibombus kernel: SCSI device sdb: 512000 512-byte hdwr sectors (262 MB)
Jun 23 02:16:59 confusibombus kernel: sdb: assuming Write Enabled
Jun 23 02:16:59 confusibombus kernel: sdb: assuming drive cache: write through
Jun 23 02:16:59 confusibombus kernel:  /dev/scsi/host1/bus0/target0/lun0: p1 p2 p3 p4
Jun 23 02:16:59 confusibombus kernel: Attached scsi removable disk sdb at scsi1, channel 0, id 0, lun 0
Jun 23 02:16:59 confusibombus kernel: USB Mass Storage device found at 3
Jun 23 02:16:59 confusibombus kernel: usbcore: registered new driver usb-storage
Jun 23 02:16:59 confusibombus kernel: USB Mass Storage support registered.
...
Jun 23 02:18:01 confusibombus kernel: FAT: unable to read boot sector
Jun 23 02:18:56 confusibombus last message repeated 2 times
Jun 23 02:19:08 confusibombus last message repeated 3 times
...
Jun 23 02:21:24 confusibombus kernel: FAT: unable to read boot sector
...
Jun 23 02:27:39 confusibombus kernel: SCSI error : <1 0 0 0> return code = 0x70000
Jun 23 02:27:39 confusibombus kernel: end_request: I/O error, dev sdb, sector 771
...
Jun 23 02:27:39 confusibombus kernel: end_request: I/O error, dev sdb, sector 275176
Jun 23 02:27:39 confusibombus kernel: SCSI error : <1 0 0 0> return code = 0x10000
Jun 23 02:27:39 confusibombus kernel: end_r device being removed
...
Jun 23 02:27:39 confusibombus kernel: scsi1 (0:0): rejecti device being removed
Jun 23 02:27:39 confusibombus kernel: scsi1 (0:0): rejecting I/O to device being removed
Jun 23 02:27:39 confusibombus last message repeated 508 times
Jun 23 02:27:39 confusibombus kernel: FAT: bread(block 771) in fat_access failed
Jun 23 02:27:39 confusibombus kernel: scsi1 (0:0): rejecting I/O to device being removed
Jun 23 02:27:39 confusibombus kernel: FAT: Directory bread(block 262961) failed
Jun 23 02:27:39 confusibombus kernel: scsi1 (0:0): rejecting I/O to device being removed
...
Jun 23 02:38:06 confusibombus kernel: usb 1-2: new full speed USB device using address 7
Jun 23 02:38:06 confusibombus kernel: scsi4 : SCSI emulation for USB Mass Storage devices
Jun 23 02:38:07 confusibombus kernel:   Vendor:           Model:                   Rev:
Jun 23 02:38:07 confusibombus kernel:   Type:   Direct-Access                      ANSI SCSI revision: 02
Jun 23 02:38:07 confusibombus usb.agent[3033]:      usb-storage: already loaded
Jun 23 02:38:07 confusibombus kernel: SCSI device sdc: 512000 512-byte hdwr sectors (262 MB)
Jun 23 02:38:07 confusibombus kernel: sdc: assuming Write Enabled
Jun 23 02:38:07 confusibombus kernel: sdc: assuming drive cache: write through
Jun 23 02:38:07 confusibombus kernel:  /dev/scsi/host4/bus0/target0/lun0: p1 p2 p3 p4
Jun 23 02:38:07 confusibombus kernel: Attached scsi removable disk sdc at scsi4, channel 0, id 0, lun 0
Jun 23 02:38:07 confusibombus kernel: USB Mass Storage device found at 7
Jun 23 02:38:08 confusibombus scsi.agent[3058]: disk at /devices/pci0000:00/0000:00:07.4/usb1/1-2/1-2:1.0/host4/4:0:0:0
Jun 23 02:38:16 confusibombus kernel: scsi3 (0:0): rejecting I/O to dead device
Jun 23 02:38:16 confusibombus kernel: FAT: Directory bread(block 2032) failed
...
Jun 23 02:42:58 confusibombus kernel:     clusters badly computed (5 != 1073740391)
Jun 23 02:42:58 confusibombus kernel: FAT: Filesystem panic (dev sdb)
...

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