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I have a arduino clone that is not being assigned a /dev/tty by Debian Stretch (Stable). It does have the ch340g chip. I have tried the driver from the manufactures site with no joy. Would the lack of a bootloader cause this problem?

Thanks.

  • Trying a random manufacturer driver makes no sense on a Linux system, the proper CH34x driver is already in the mainline kernel sources. To figure out what is actually wrong you should start with dmesg and lsusb. – Chris Stratton Mar 11 '18 at 19:19
  • Been there done that. And the source is from the Actual board manufactures site. usb 2-1.3: new full-speed USB device number 14 using ehci-pci [136679.079624] usb 2-1.3: device descriptor read/8, error -32 [136679.207639] usb 2-1.3: device descriptor read/8, error -32 [136679.314532] usb 2-1-port3: unable to enumerate USB device – rbees Mar 11 '18 at 19:24
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    this information should have been in your question when you posted it . ... please update your question with this info (use the edit button) – jsotola Mar 11 '18 at 20:07
  • What is actually wrong with the board is a different question than was asked. Though again, despite being irrelevant to the actual issue, with Linux you all but never want to use a manufacturer's driver, and definitely not when there's a known-good and actually code reviewed one in the mainline kernel sources. – Chris Stratton Mar 11 '18 at 20:16
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No. On Arduino-style boards which use distinct chips for the main processor (ATmega328p) and Serial interface (CH34x/ATmega8u2/ATmega16u2/FT2232 etc) the presence or absence of a bootloader on the main processor has no bearing on the recognition of a USB/Virtual Serial device by a host.

However on ATmega32u4 and some ARM-based boards it can.

Since you are describing a classic board with distinct chips, whatever your actual issue is, it is something else.

  • Figured as much. I was just hoping that when a new board gets here I could install a bootloader to it and have it start working. So I expect that the chip is bad and I have a brick. To bad it would cost as much to send it back as it cost in the first place. – rbees Mar 11 '18 at 19:27
  • If you desolder the USB chip the ATmega processor might still be good. – Chris Stratton Mar 11 '18 at 20:15

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