Re: First row missing when using a monitor

> On 17. Apr 2024, at 15:11, Hugh Blemings <hugh@blemings.org> wrote:
> 
> Hi Michael, All,
> 
> On 17/4/2024 12:09, tuexen@freebsd.org wrote:
>> Dear all,
>> 
>> when using a monitor in combination with a Power9 system (raptor black bird),
>> the top line is not displayed. I verified this when using top or vi.
>> However, there is enough space on the monitor display let at the bottom to
>> show one additional line below the lowest displayed one.
>> 
>> So it seems that the number of rows is correct, but when displaying them,
>> they are off by one resulting in the first one not being visible.
>> 
>> This happens with the main branch.
>> 
>> Any idea what could be wrong?
> 
> I'm curious - is this using the framebuffer in the BMC or a separate video card ?
I have no video card installed.
> 
> I seem to recall the text console when using the BMC framebuffer the display parameters are such that the top few lines to get truncated.  It might be that some tweaks to the framebuffer scan line settings could resolve this. Alas I no longer remember how this is done.
> 
> Maybe this gives a next potential step though ?
Any idea which code to look at?

Best regards
Michael
> 
> Cheers,
> Hugh
> 
>