Forums - mini-dm on Linux

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mini-dm on Linux
joes
Join Date: 28 Jan 16
Posts: 7
Posted: Wed, 2016-06-01 08:40
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mini-dm on Linux doesn't seem to work on DragonBoard 820, both with Hexagon SDK 2.0 and 3.0.

All it does is to print this:

Running mini-dm version: 3.0

Device found with Product ID 0x901d. Continuing...
mini-dm is waiting for a DMSS connection...
but no message appears e.g. when running the calculator example
like "/data/calculator 0 0 10" or playing audio like the
Debugging_Message Logs.html doc page suggests.
 
Is there something that needs to be done on DB820 to enable mini-dm output?
 
Also, when calling mini-dm with any argument starting with a dash,
like -h or --help, it just crashes (segmentation fault).
 
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Re: mini-dm on Linux
Edith
Join Date: 16 Mar 16
Posts: 11
Posted: Wed, 2016-06-01 08:49
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I have just succesfully run mini-dm on VirtualBox, Ubuntu 14_04. What I did was to run USB1.0 port for USB connection. I have also installed usb driver from SDK 2.0: ../tools/libusb/libusb-1.0.so 

zugaj@ezugaj-VirtualBox:/tools/Qualcomm/Hexagon_SDK/2.0/tools/mini-dm/Linux_Debug$ ./mini-dm 
Device found with Product ID 0x901d. Continuing...
mini-dm is waiting for a DMSS connection...
DMSS is connected. Running mini-dm...
[08500/02]  50:07.831  test enabled  0559  sigverify.c
...
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Re: mini-dm on Linux
joes
Join Date: 28 Jan 16
Posts: 7
Posted: Wed, 2016-06-01 09:17
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Thanks for letting me know. Is your platform also DB820?

The libusb-1.0 in both SDK 2.0 and 3.0 is actually a HTML error page saying "301 Moved Permanently"...

mini-dm already found the device on the PC but nothing connects to it from the device side, if I interpret the messages correctly.

Checking with LIBUSB_DEBUG=4 confirms the device is found but the bulk URBs complete with error -71 (EPROTO).

 

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Re: mini-dm on Linux
Edith
Join Date: 16 Mar 16
Posts: 11
Posted: Wed, 2016-06-01 23:55
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I am using DB810. I had met similar problems with mini-dm. It was correctly finding the device but nothing happened later. Then I moved to usb1.0.

BTW, have you tried running Windows version? I started from Windows one and after the installation of Qm drivers mini-dm started working w/o additional steps.

Attached my logs from Linux:

[timestamp] [threadID] facility level [function call] <message>
--------------------------------------------------------------------------------
[ 0.000004] [000039a1] libusbx: debug [libusb_init] created default context
[ 0.000053] [000039a1] libusbx: debug [libusb_init] libusbx v1.0.17.10830
[ 0.000076] [000039a1] libusbx: debug [find_usbfs_path] found usbfs at /dev/bus/usb
[ 0.000089] [000039a1] libusbx: debug [op_init] bulk continuation flag supported
[ 0.000095] [000039a1] libusbx: debug [op_init] zero length packet flag supported
[ 0.000106] [000039a1] libusbx: debug [op_init] sysfs can relate devices
[ 0.000111] [000039a1] libusbx: debug [op_init] sysfs has complete descriptors
[ 0.000481] [000039a2] libusbx: debug [linux_udev_event_thread_main] udev event thread entering.
[ 0.000638] [000039a1] libusbx: debug [linux_get_device_address] getting address for device: usb1 detached: 0
[ 0.000702] [000039a1] libusbx: debug [linux_get_device_address] scan usb1
[ 0.000740] [000039a1] libusbx: debug [linux_get_device_address] bus=1 dev=1
[ 0.000797] [000039a1] libusbx: debug [linux_enumerate_device] busnum 1 devaddr 1 session_id 257
[ 0.000805] [000039a1] libusbx: debug [linux_enumerate_device] allocating new device for 1/1 (session 257)
[ 0.000881] [000039a1] libusbx: debug [linux_get_device_address] getting address for device: 1-1 detached: 0
[ 0.000938] [000039a1] libusbx: debug [linux_get_device_address] scan 1-1
[ 0.001072] [000039a1] libusbx: debug [linux_get_device_address] bus=1 dev=2
[ 0.001127] [000039a1] libusbx: debug [linux_enumerate_device] busnum 1 devaddr 2 session_id 258
[ 0.001134] [000039a1] libusbx: debug [linux_enumerate_device] allocating new device for 1/2 (session 258)
[ 0.001167] [000039a1] libusbx: debug [linux_get_parent_info] Dev 0x6a82b0 (1-1) has parent 0x6a81f0 (usb1) port 1
[ 0.001273] [000039a1] libusbx: debug [linux_get_device_address] getting address for device: 1-2 detached: 0
[ 0.001330] [000039a1] libusbx: debug [linux_get_device_address] scan 1-2
[ 0.001364] [000039a1] libusbx: debug [linux_get_device_address] bus=1 dev=29
[ 0.001421] [000039a1] libusbx: debug [linux_enumerate_device] busnum 1 devaddr 29 session_id 285
[ 0.001428] [000039a1] libusbx: debug [linux_enumerate_device] allocating new device for 1/29 (session 285)
[ 0.001506] [000039a1] libusbx: debug [linux_get_parent_info] Dev 0x6a8390 (1-2) has parent 0x6a81f0 (usb1) port 2
[ 0.001583] [000039a1] libusbx: debug [usbi_add_pollfd] add fd 6 events 1
[ 0.001594] [000039a1] libusbx: debug [usbi_add_pollfd] add fd 8 events 1
[ 0.001601] [000039a1] libusbx: debug [usbi_io_init] using timerfd for timeouts
[ 0.001606] [000039a1] libusbx: debug [usbi_add_pollfd] add fd 10 events 1
[ 0.001612] [000039a1] libusbx: debug [libusb_get_device_list] 
[ 0.001621] [000039a1] libusbx: debug [libusb_get_device_descriptor] 
[ 0.001631] [000039a1] libusbx: debug [libusb_open] open 1.29
[ 0.001646] [000039a1] libusbx: debug [usbi_add_pollfd] add fd 11 events 4
[ 0.001656] [000039a1] libusbx: debug [libusb_get_configuration] 
[ 0.001671] [000039a1] libusbx: debug [libusb_get_configuration] active config 1
[ 0.001767] [000039a1] libusbx: debug [add_to_flying_list] arm timerfd for timeout in 1000ms (first in line)
[ 0.001829] [000039a1] libusbx: debug [submit_bulk_transfer] need 1 urbs for new transfer with length 8
[ 0.002065] [000039a1] libusbx: debug [libusb_handle_events_timeout_completed] doing our own event handling
[ 0.002134] [000039a1] libusbx: debug [handle_events] poll() 4 fds with timeout in 60000ms
[ 0.014085] [000039a1] libusbx: debug [handle_events] poll() returned 1
[ 0.014136] [000039a1] libusbx: debug [reap_for_handle] urb type=3 status=0 transferred=8
[ 0.014143] [000039a1] libusbx: debug [handle_bulk_completion] handling completion status 0 of bulk urb 1/1
[ 0.014149] [000039a1] libusbx: debug [handle_bulk_completion] last URB in transfer --> complete!
[ 0.014154] [000039a1] libusbx: debug [disarm_timerfd] 
 
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Re: mini-dm on Linux
joes
Join Date: 28 Jan 16
Posts: 7
Posted: Thu, 2016-06-02 06:25
Top

Found the problem: DB820 has a USB3.0 connector and I actually used it and it works fine with adb.

But fails with mini-dm.  Using a USB2.0 cable works around the problem.

 

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