USB transmission unreliable on some hardware

[rew]

After getting one dump, the second gives me:

(the first dump seems to have worked, but I didn't save the output).

usb_set_debug: Setting debugging level to 255 (on)
usb_os_find_busses: Found 001
usb_os_find_devices: Found 029 on 001
usb_os_find_devices: Found 003 on 001
usb_os_find_devices: Found 006 on 001
usb_os_find_devices: Found 004 on 001
usb_os_find_devices: Found 005 on 001
usb_os_find_devices: Found 002 on 001
usb_os_find_devices: Found 001 on 001
error obtaining child information: Inappropriate ioctl for device
error obtaining child information: Inappropriate ioctl for device
error obtaining child information: Inappropriate ioctl for device
error obtaining child information: Inappropriate ioctl for device
USB error: could not get bound driver: No data available
Retrieving data...
Command: 930101030000000000000000000000
Result size: 0x0000
Result data:
Command: 9305040003019f0000000000000000
Result size: 0x0003
Result data: c22015
Command: 930b03001d00000000000000000000
Result size: 0x0003
Result data: 000e25
Command: 930507100004030000000000000000
Result size: 0x1000
Result data: 010d8d20ff0fff3c00f1ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff000000003c3c0009011502c80c012c3205140101010202050a0a186a0c3504e200bb01171e000108080404020202020000200f01010101280000000000000000000000003c3c0005000000c80c012c3205140101010202050a0a186a0c3504e200bb01171e000108080404020202020000200f01010101280000000000000000000000003c3c0005000000c80c012c3205140101010202050a0a186a0c3504e200bb01171e000108080404020202020000200f01010101280000000000000000000000003c3c0005000000c80c012c3205140101010202050a0a186a0c3504e200bb01171e000108080404020202020000200f01010101280000000000000000000000003c3c0005000000c80c012c3205140101010202050a0a186a0c3504e200bb01171e000108080404020202020000200f01010101280000000000000000000000003c3c0005000000c80c012c3205140101010202050a0a186a0c3504e200bb01171e000108080404020202020000200f01010101280000000000000000000000003c3c0005000000c80c012c3205140101010202050a0a186a0c3504e200bb01171e000108080404020202020000200f01010101280000000000000000000000003c3c0005000000c80c012c3205140101010202050a0a186a0c3504e200bb01171e000108080404020202020000200f01010101280000000000000000000000003c3c0005000000c80c012c3205140101010202050a0a186a0c3504e200bb01171e000108080404020202020000200f01010101280000000000000000000000003c3c0005000000c80c012c3205140101010202050a0a186a0c3504e200bb01171e000108080404020202020000200f01010101280000000000000000000000003c3c0005000000c80c012c3205140101010202050a0a186a0c3504e200bb01171e000108080404020202020000200f01010101280000000000000000000000003c3c0005000000c80c012c3205140101010202050a0a186a0c3504e200bb01171e000108080404020202020000200f01010101280000000000000000000000003c3c0005000000c80c012c3205140101010202050a0a186a0c3504e200bb01171e000108080404020202020000200f01010101280000000000000000000000003c3c0005000000c80c012c3205140101010202050a0a186a0c3504e200bb01171e000108080404020202020000200f01010101280000000000000000000000003c3c0005000000c80c012c3205140101010202050a0a186a0c3504e200bb01171e000108080404020202020000200f01010101280000000000000000000000003c3c0005000000c80c012c3205140101010202050a0a186a0c3504e200bb01171e000108080404020202020000200f01010101280000000000000000000000003c3c0005000000c80c012c3205140101010202050a0a186a0c3504e200bb01171e000108080404020202020000200f01010101280000000000000000000000003c3c0005000000c80c012c3205140101010202050a0a186a0c3504e200bb01171e000108080404020202020000200f01010101280000000000000000000000003c3c0005000000c80c012c3205140101010202050a0a186a0c3504e200bb01171e000108080404020202020000200f01010101280000000000000000000000003c3c0005000000c80c012c3205140101010202050a0a186a0c3504e200bb01171e000108080404020202020000200f01010101280000000000000000000000003c3c0005000000c80c012c3205140101010202050a0a186a0c3504e200bb01171e000108080404020202020000200f01010101280000000000000000000000003c3c0005000000c80c012c3205140101010202050a0a186a0c3504e200bb01171e000108080404020202020000200f01010101280000000000000000000000003c3c0005000000c80c012c3205140101010202050a0a186a0c3504e200bb01171e000108080404020202020000200f01010101280000000000000000000000003c3c0005000000c80c012c3205140101010202050a0a186a0c3504e200bb01171e000108080404020202020000200f01010101280000000000000000000000003c3c0005000000c80c012c3205140101010202050a0a186a0c3504e200bb01171e000108080404020202020000200f01010101280000000000000000000000003c3c0005000000c80c012c3205140101010202050a0a186a0c3504e200bb01171e000108080404020202020000200f01010101280000000000000000000000003c3c0005000000c80c012c3205140101010202050a0a186a0c3504e200bb01171e000108080404020202020000200f01010101280000000000000000000000003c3c0005000000c80c012c3205140101010202050a0a186a0c3504e200bb01171e000108080404020202020000200f0101010128000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000a0a2001980ffd27beb004bc862002892af00017700013a188405a70c880924b0b300000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000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Retrieved block 1/30
Command: 930507100004030010000000000000
Failed protocol: Response too short: expected 3, got 0 bytes
USB error: error sending control message: Connection timed out
Command: 930507100004030010000000000000
Failed: Unable to send data to the device: Connection timed out
Unable to obtain trackpoints from GPS tracker: Unable to send data to the device: Connection timed out

[Michael Hofmann (mh21)]

Do you still have this problem with the 0.3 release candidate?

[rew (r-e-wolff)]

This was on the system where things worked "badly" most of the time. I'll try not to forget to take my i-gotu along to that system and test.

[rew (r-e-wolff)]

I just managed to test this on my work system (the one that works "badly"), and it gives me:

...
Downloaded block 77/101
Downloaded block 78/101
Downloaded block 79/101
Unable to download trackpoints from GPS tracker: Unable to read data from device: Connection timed out

This is on a debian system, and I can't get it to compile it on debian. So I'm running this inside a chrooted jaunty on the debian system.

[rew (r-e-wolff)]

The above was the first try after connecting the device. The second try succeded in downloading a full track. The second try to download a track then failed after 17 blocks. reconnecting the device resulted in only 2 succesful block transfers. The fourth reconnect allowed a full download and then a crash again after only 2 blocks.

[Michael Hofmann (mh21)]

Ok, I will change the subject of the bug, but I have no idea how to fix this until I get a working libusb 1.0 implementation which might improve things.

[Alessandro Valli (av-naturalinteraction)]

I guess it is the same bug that affects me, but I never experienced it dumping, but always when I try to delete points. I get a timeout every 20% of memory to erase, so I have to repeat the erase command about 5 times to completely free memory. GT-120, version 0.30, Windows Vista on Dell XPS laptop.