On Tue, Nov 20, 2018 at 01:17:34PM +0200, Jarkko Nikula wrote:
> Hi
>
> I'm using PL2303 based USB serial adapter for the kernel and getty
> serial console. I noticed getty console stopped working in v4.18 and
> bisected this into commit 7041d9c3f01b ("USB: serial: pl2303: add
> support for tx xon/xoff flow control").
>
> Serial console works up to somewhere after when getty service starts. I
> can sometimes see on the serial console that getty was started but not
> always. After that there is no messages printed from the kernel or
> userspace.
>
> [ OK ] Started Getty on tty1.
> [ OK ] Started Serial Getty on ttyUSB0.
>
> [ OK ] Reached target Login Prompts.
> [ OK ] Started Login Service.
IXON is enabled by default, and it sounds like flow could have been
stopped. What happens if you send a start character (ctrl-q) on the
console?
And what if you disable the getty? Does the port work then?
Johan
