https://bugzilla.kernel.org/show_bug.cgi?id=214131 Bug ID: 214131 Summary: ch341 communication problem Product: Drivers Version: 2.5 Kernel Version: 5.14-rc5 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: USB Assignee: drivers_usb@xxxxxxxxxxxxxxxxxxxxxx Reporter: pb.g@xxxxxx Regression: No Created attachment 298411 --> https://bugzilla.kernel.org/attachment.cgi?id=298411&action=edit captured communication Several users reported their USB-Serial Adapter based on ch341 driver does not communicate correctly anymore with kernels somewhere above 5.10.56-1. The problem is that flashing an ESP8266 board is not possible anymore with Arduino IDE resulting in a "/dev/ttyUSB0 failed to connect: Failed to connect to ESP8266: Timed out waiting for packet header" error. I can confirm this issue up to kernel 5.14-rc5. Downgrading my kernel to 5.10.52 also solves the problem. I attached two communication samples from github user jypma. The issue is was discussed here: https://github.com/espressif/esptool/issues/653 -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.
