False operation on some Mediatek devices

coyote · Post by **coyote** » 03 Sep 2012, 10:01

Good day.

Such problem:
Philips Xenium X331 plugged as USB storage detected as

$ lsusb
Bus 001 Device 026: ID 0e8d:0002 MediaTek Inc.

And what we see?

# fgrep 0e8d /lib/udev/rules.d/40-usb_modeswitch.rules
ATTRS{idVendor}=="0e8d", ATTRS{idProduct}=="0002", RUN+="usb_modeswitch '%b/%k'"

We plug phone as masstorage, usb_modeswitch run and switch phone. So no usb storage device seen. Sad.

Workaround: disable usb_modeswitch.

But I think need more flexible mask in rules. Some criteria to keep difference between 0e8d:0002 usb storage on MTK-based phones and MTK-based dongles.

Post by **Josh** » 03 Sep 2012, 11:01

That's exactly what the USB attribute matching feature of usb_modeswitch is for.

With mode switching disabled in /etc/usb_modeswitch.conf, plug your phone in and run
"lsusb -v -d 0e8d:0002".

Post the result here and we may find some attribute that we can use to "filter" out phones.

coyote · Post by **coyote** » 03 Sep 2012, 12:34

Josh wrote: With mode switching disabled in /etc/usb_modeswitch.conf, plug your phone in and run
"lsusb -v -d 0e8d:0002".

Post the result here and we may find some attribute that we can use to "filter" out phones.

Code: Select all

# lsusb -v -d 0e8d:0002

Bus 001 Device 028: ID 0e8d:0002 MediaTek Inc. 
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x0e8d MediaTek Inc.
  idProduct          0x0002 
  bcdDevice            1.00
  iManufacturer           2 MediaTek Inc
  iProduct                3 X331 
  iSerial                 4 68536410008837f
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           32
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              500mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass         8 Mass Storage
      bInterfaceSubClass      6 SCSI
      bInterfaceProtocol     80 Bulk (Zip)
      iInterface              1 6236--Storage
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 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     0x01  EP 1 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
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:     0x0000
  (Bus Powered)

http://pastebin.calculate-linux.ru/en/show/4216

Post by **Josh** » 03 Sep 2012, 17:37

Thanks.

It looks like we can use the "iProduct" attribute. Your phone says "X331", the modems show something like "MT6235".

If you copy the file "0e8d:0002" to the folder "/etc/usb_modeswitch.d" (you should find it in
"/usr/share/usb_modeswitch") and rename it to "0e8d

uPr=MT", you will have no more problems even if usb_modeswitch is activated again.

Your phone will be ignored from now on.

coyote · Post by **coyote** » 04 Sep 2012, 08:40

Josh wrote: If you copy the file "0e8d:0002" to the folder "/etc/usb_modeswitch.d" (you should find it in
"/usr/share/usb_modeswitch") and rename it to "0e8duPr=MT", you will have no more problems even if usb_modeswitch is activated again.

ok. but move, not copy.

Great! Thank you for fast and clear answers. Do you plan make this changes permanent in usb_modeswith? I think many people use Philips MTK-based phones.

Post by **Josh** » 04 Sep 2012, 09:04

coyote wrote:ok. but move, not copy.

Yes, you are right.

coyote wrote:Do you plan make this changes permanent in usb_modeswith? I think many people use Philips MTK-based phones.

Absolutely. I will include this change in the next data package release.

sbrabec · Post by **sbrabec** » 06 Feb 2014, 17:01

My MT6250 based phone Aiek M3 is still covered by the rule, and the rule as it is invalidates mass storage support.

I found two work-arounds:

1) Disable the rule

2) Add Configuration=0x01 to /usr/share/usb_modeswitch/0e8d:0002:uPr=MT

Both result in working mass storage. I am not sure, whether this tiny phone supports modem at all, but I seems that no.

lsusb output:

Code: Select all

Bus 001 Device 004: ID 0e8d:0002 MediaTek Inc. 
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0         8
  idVendor           0x0e8d MediaTek Inc.
  idProduct          0x0002 
  bcdDevice            1.00
  iManufacturer           2 MediaTek Inc
  iProduct                3 MT6250 
  iSerial                 4 53290802318158f
  bNumConfigurations      6
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           32
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              500mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass         8 Mass Storage
      bInterfaceSubClass      6 SCSI
      bInterfaceProtocol     80 Bulk-Only
      iInterface              1 6250--Storage
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x01  EP 1 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           32
    bNumInterfaces          1
    bConfigurationValue     2
    iConfiguration          0 
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              400mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass         8 Mass Storage
      bInterfaceSubClass      6 SCSI
      bInterfaceProtocol     80 Bulk-Only
      iInterface              1 6250--Storage
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x01  EP 1 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           32
    bNumInterfaces          1
    bConfigurationValue     3
    iConfiguration          0 
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              300mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass         8 Mass Storage
      bInterfaceSubClass      6 SCSI
      bInterfaceProtocol     80 Bulk-Only
      iInterface              1 6250--Storage
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x01  EP 1 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           32
    bNumInterfaces          1
    bConfigurationValue     4
    iConfiguration          0 
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              200mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass         8 Mass Storage
      bInterfaceSubClass      6 SCSI
      bInterfaceProtocol     80 Bulk-Only
      iInterface              1 6250--Storage
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x01  EP 1 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           32
    bNumInterfaces          1
    bConfigurationValue     5
    iConfiguration          0 
    bmAttributes         0x80
      (Bus Powered)
    MaxPower               98mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass         8 Mass Storage
      bInterfaceSubClass      6 SCSI
      bInterfaceProtocol     80 Bulk-Only
      iInterface              1 6250--Storage
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x01  EP 1 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           32
    bNumInterfaces          1
    bConfigurationValue     6
    iConfiguration          0 
    bmAttributes         0x80
      (Bus Powered)
    MaxPower                0mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass         8 Mass Storage
      bInterfaceSubClass      6 SCSI
      bInterfaceProtocol     80 Bulk-Only
      iInterface              1 6250--Storage
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x01  EP 1 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
Device Status:     0x0000
  (Bus Powered)

System messages with this rule disabled:

Code: Select all

2014-02-06T15:52:28.030150+01:00 oct kernel: [49761.541016] usb 1-1.4: new full-speed USB device number 4 using ehci-pci
2014-02-06T15:52:28.121147+01:00 oct kernel: [49761.631889] usb 1-1.4: New USB device found, idVendor=0e8d, idProduct=0002
2014-02-06T15:52:28.121160+01:00 oct kernel: [49761.631896] usb 1-1.4: New USB device strings: Mfr=2, Product=3, SerialNumber=4
2014-02-06T15:52:28.121162+01:00 oct kernel: [49761.631900] usb 1-1.4: Product: MT6250 
2014-02-06T15:52:28.121163+01:00 oct kernel: [49761.631903] usb 1-1.4: Manufacturer: MediaTek Inc
2014-02-06T15:52:28.121165+01:00 oct kernel: [49761.631906] usb 1-1.4: SerialNumber: 53290802318158f
2014-02-06T15:52:28.121170+01:00 oct kernel: [49761.632893] usb-storage 1-1.4:1.0: USB Mass Storage device detected
2014-02-06T15:52:28.123092+01:00 oct kernel: [49761.634235] scsi35 : usb-storage 1-1.4:1.0
2014-02-06T15:52:28.399635+01:00 oct logger: usb_modeswitch: switching disabled, no action for 0e8d:0002
2014-02-06T15:52:29.125108+01:00 oct kernel: [49762.636216] scsi 35:0:0:0: Direct-Access     MEDIATEK  FLASH DISK      6250 PQ: 0 ANSI: 0 CCS
2014-02-06T15:52:29.125128+01:00 oct kernel: [49762.636684] sd 35:0:0:0: Attached scsi generic sg5 type 0
2014-02-06T15:52:29.126153+01:00 oct kernel: [49762.637559] sd 35:0:0:0: [sdd] 3854336 512-byte logical blocks: (1.97 GB/1.83 GiB)
2014-02-06T15:52:29.127070+01:00 oct kernel: [49762.638353] sd 35:0:0:0: [sdd] Write Protect is off
2014-02-06T15:52:29.127083+01:00 oct kernel: [49762.638361] sd 35:0:0:0: [sdd] Mode Sense: 03 00 00 00
2014-02-06T15:52:29.129113+01:00 oct kernel: [49762.640496] sd 35:0:0:0: [sdd] No Caching mode page found
2014-02-06T15:52:29.129123+01:00 oct kernel: [49762.640502] sd 35:0:0:0: [sdd] Assuming drive cache: write through
2014-02-06T15:52:29.133146+01:00 oct kernel: [49762.644046] sd 35:0:0:0: [sdd] No Caching mode page found
2014-02-06T15:52:29.133158+01:00 oct kernel: [49762.644052] sd 35:0:0:0: [sdd] Assuming drive cache: write through
2014-02-06T15:52:29.141124+01:00 oct kernel: [49762.651920]  sdd: sdd1
2014-02-06T15:52:29.145185+01:00 oct kernel: [49762.656423] sd 35:0:0:0: [sdd] No Caching mode page found
2014-02-06T15:52:29.145197+01:00 oct kernel: [49762.656428] sd 35:0:0:0: [sdd] Assuming drive cache: write through
2014-02-06T15:52:29.145200+01:00 oct kernel: [49762.656433] sd 35:0:0:0: [sdd] Attached SCSI removable disk

System messages with this rule enabled:

Code: Select all

2014-02-06T15:56:50.303240+01:00 oct kernel: [50023.199364] usb 1-1.4: new full-speed USB device number 5 using ehci-pci
2014-02-06T15:56:50.394305+01:00 oct kernel: [50023.290188] usb 1-1.4: New USB device found, idVendor=0e8d, idProduct=0002
2014-02-06T15:56:50.394325+01:00 oct kernel: [50023.290195] usb 1-1.4: New USB device strings: Mfr=2, Product=3, SerialNumber=4
2014-02-06T15:56:50.394328+01:00 oct kernel: [50023.290199] usb 1-1.4: Product: MT6250 
2014-02-06T15:56:50.394330+01:00 oct kernel: [50023.290202] usb 1-1.4: Manufacturer: MediaTek Inc
2014-02-06T15:56:50.394332+01:00 oct kernel: [50023.290206] usb 1-1.4: SerialNumber: 53290802318158f
2014-02-06T15:56:50.395178+01:00 oct kernel: [50023.291217] usb-storage 1-1.4:1.0: USB Mass Storage device detected
2014-02-06T15:56:50.395197+01:00 oct kernel: [50023.291364] scsi36 : usb-storage 1-1.4:1.0
2014-02-06T15:56:51.039622+01:00 oct usb_modeswitch: switching device 0e8d:0002 on 001/005

Post by **Josh** » 08 Feb 2014, 15:35

Hmm, the problem is that if people want to actually use the modem feature, they have to switch the mode ... (Or do you know about a different way to change the USB mode? Sometimes there is a phone setting for that.)

Setting the "Configuration" parameter to 1 will effectively disable the whole config file, so I can't do it in the official distribution.

The problem here is that usb_modeswitch has no way of knowing which mode the user desires. In these cases I suggest changing the "DisableSwitching" parameter in "/etc/usb_modeswitch.conf". That's what it's there for anyway.

Post by **Josh** » 08 Feb 2014, 15:41

BTW, what is the lsusb output after the mode switch (if it's not disabled)? Any changes?

False operation on some Mediatek devices

Re: False operation on some Mediatek devices

Re: False operation on some Mediatek devices

Re: False operation on some Mediatek devices