On Fri, Feb 20, 2015 at 02:45:42PM +0300, Kuzmichev Viktor wrote:
Yes, Martin Roth mentioned earlier about SeaBIOS not supporting serial input.
I've tried sgabios, but it looks like in order for it to work properly, I should disable all serial debug which is not very convenient.
To prevent the duplicate messages from SeaBIOS, one can set the SeaBIOS debug level to 1 and set the "etc/screen-and-debug" setting as described at: http://www.coreboot.org/SeaBIOS#Adding_sgabios_support
This wont prevent duplicates from grub, but if sgabios works properly then you may be able to disable grub serial.
However, in one of my latest e-mails I suggested that SeaBIOS should not control serial input in memtest since memtest has its own code for serial input handling. And still, input via serial console does not work in memtest. Any idea why that's the case?
I'm not familiar with memtest internals, so I can't help here.
-Kevin