adding the option "--before no_reset" seems to solve the issue with kernel 5.11.0-37
esptool --before no_reset --chip esp8266 --port /dev/ttyUSB0 --baud 115200 write_flash 0x0000 firmware.bin Even if I do not understand the why, this solves the issue for me. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1946231 Title: esp8266 flashing stopped working with kernel 5.11.0-37-generic (ch341) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe-5.11/+bug/1946231/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
