> "Valerio Vanni" <valerio@valeriovanni.com> ha scritto nel messaggio
> news:lg9etc$9fl$1@ger.gmane.org
> When resuming from S3 suspend, serial console starts sending garbage
> on the serial port.
> Not continuously, it sends garbage only when in local console prints
> a text.
> It stops only when the (sending) machine is shut down, or if some
> text is sent manually (i.e. with "cat txtfile > /dev/ttyS0").
> 
> Full details are here:
>> https://bugzilla.kernel.org/show_bug.cgi?id=69751

It's still present in 3.15-rc1 and in actual -next.