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<font size="-1" face="Courier New, Courier, monospace"
color="#00007F">Hi all,</font><font size="-1"><br>
<font face="Courier New, Courier, monospace" color="#00007F"> I
have this strange behavior when I use arduino ide on VirtualBox
6.1.14 (virtualbox-6.1_6.1.14-140239~Debian~buster_amd64.deb) on
windows10/debian10 virtual machine.<br>
<br>
bossac cannot terminate firmware upload on usb development
board.<br>
</font></font><font size="-1"><font face="Courier New, Courier,
monospace" color="#00007F"><font size="-1"><font face="Courier
New, Courier, monospace" color="#00007F"><br>
dmesg on debian10 virtual machine report on insert </font></font></font></font><font
size="-1"><font face="Courier New, Courier, monospace"
color="#00007F"><font size="-1"><font face="Courier New,
Courier, monospace" color="#00007F"><font size="-1"><font
face="Courier New, Courier, monospace" color="#00007F">usb
development board</font></font>:<br>
</font></font></font><font face="Courier New, Courier,
monospace" color="#00007F"><br>
[ 640.935588] usb 1-2: new full-speed USB device number 6 using
ohci-pci<br>
[ 641.427835] usb 1-2: New USB device found, idVendor=239a,
idProduct=800b, bcdDevice= 1.00<br>
[ 641.427838] usb 1-2: New USB device strings: Mfr=1,
Product=2, SerialNumber=3<br>
[ 641.427839] usb 1-2: Product: Feather M0<br>
[ 641.427841] usb 1-2: Manufacturer: Adafruit<br>
[ 641.427842] usb 1-2: SerialNumber:
D64388B2514D4D5447202020FF01242E<br>
[ 641.431256] cdc_acm 1-2:1.0: ttyACM0: USB ACM device<br>
<br>
arduino ide upload detect port </font></font><font size="-1"><font
face="Courier New, Courier, monospace" color="#00007F"><font
size="-1"><font face="Courier New, Courier, monospace"
color="#00007F">ttyACM0 and report:<br>
<br>
</font></font></font></font><font size="-1"><font
face="Courier New, Courier, monospace" color="#00007F">Forcing
reset using 1200bps open/close on port /dev/ttyACM0<br>
PORTS {/dev/ttyACM0, } / {/dev/ttyACM0, } => {}<br>
PORTS {/dev/ttyACM0, } / {/dev/ttyACM0, } => {}.<br>
.<br>
.<br>
.<br>
.<br>
PORTS {/dev/ttyACM0, } / {/dev/ttyACM0, } => {}<br>
PORTS {/dev/ttyACM0, } / {/dev/ttyACM0, } => {}<br>
PORTS {/dev/ttyACM0, } / {/dev/ttyACM0, } => {}<br>
Uploading using selected port: /dev/ttyACM0<br>
/home/brusa/.arduino15/packages/arduino/tools/bossac/1.7.0-arduino3/bossac
-i -d --port=ttyACM0 -U true -i -e -w -v
/tmp/arduino_build_379594/sketch_oct06a.ino.bin -R <br>
################# and after a few minutes
#########################<br>
Set binary mode<br>
No device found on ttyACM0<br>
An error occurred while uploading the sketch<br>
Send auto-baud<br>
Set binary mode<br>
<br>
<br>
If I use VirtualBox 5.2 everything works correctly<br>
<br>
<br>
any idea?<br>
<br>
thanks<br>
<br>
Vittorio Brusa Zappellini <br>
</font></font><br>
<br>
<br>
<font size="-1"><font face="Courier New, Courier, monospace"
color="#00007F"><font color="#000000"></font><br>
</font></font><font color="#00007F"> </font>
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