on Ubuntu, Failed to submit transfer: LIBUSB_ERROR_IO

[bronson]

Hi, I get this error when trying to capture 4k samples at 100 MHz on Ubuntu. Any idea what's going wrong?

terminal output:

(process:25504): GConf-WARNING **: Client failed to connect to the D-BUS daemon:
Failed to connect to socket /tmp/dbus-J242kZt6Kt: Connection refused
sr: Sanity-checking all drivers.
sr: Sanity-checking all input modules.
sr: Sanity-checking all output modules.
sr: hwdriver: Initializing driver 'demo'.
sr: hwdriver: Initializing driver 'DSLogic'.
sr: hwdriver: Scan of 'demo' found 1 devices.
sr: Found an DSLogic device.
sr: hwdriver: Scan of 'DSLogic' found 1 devices.
DSLogic attaced!

sr: Firmware upload was not needed.
sr: Opened device 0 on 1.43, interface 0, firmware 1.0.
sr: Detected REVID=1, it's a Cypress CY7C68013A (FX2LP).
sr: Configure FPGA using /usr/local/bin/res/DSLogic.bin
sr: Configure 340604 bytes
sr: FPGA configure done
Starting a hotplug thread...

sr: session: sr_session_stop: session was NULL
sr: session: Starting...
sr: Stop Previous DSLogic acquisition!
sr: FPGA setting done. trigger_mode = 0; trigger_stages = 0; trigger_mask0 = 65535; trigger_value0 = 0; trigger_edge0 = 0
sr: GPIF delay = 0, clocksource = 30MHz.
sr: DSLogic Hardware: Starting acquisition.
sr: DSLogic Hardware: Sending SR_DF_HEADER packet.
sr: session: bus: Received SR_DF_HEADER packet.
sr: session: Running...
sr: receive trigger pos handle...
sr: receive_trigger_pos(): status 0; timeout 0; received 512 bytes.
sr: session: bus: Received SR_DF_TRIGGER packet.
sr: Failed to submit transfer: LIBUSB_ERROR_IO.
sr: receive_trigger_pos: could not start data transfer(-1)

dmesg output:

[1167502.296094] usb 1-6.4: new high-speed USB device number 42 using ehci-pci
[1167502.404356] usb 1-6.4: New USB device found, idVendor=2a0e, idProduct=0001
[1167502.404361] usb 1-6.4: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[1167551.224612] DSLogic[24691]: segfault at 14 ip 0000000000522b0d sp 00007fff390da1c0 error 4 in DSLogic[400000+18f000]
[1167555.584846] usb 1-6.4: USB disconnect, device number 42
[1167557.080110] usb 1-6.4: new high-speed USB device number 43 using ehci-pci
[1167557.188727] usb 1-6.4: New USB device found, idVendor=2a0e, idProduct=0001
[1167557.188732] usb 1-6.4: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[1167557.188735] usb 1-6.4: Product: DSLogic
[1167557.188738] usb 1-6.4: Manufacturer: DreamSourceLab

[UweBonnes]

Failed to submit transfer: LIBUSB_ERROR_IO seems to happen with high transfer rate, long transfers and/or many channel. Try with lower sample rate...

[DreamSourceLab]

We have found the cause. This issue will be fixed in next version, which will be released recently.

[dpavlin]

I just got my device today, and have same issue with current master from github.