Date: Wed, 17 Apr 2024 16:24:13 +0200 From: tuexen@freebsd.org To: Hugh Blemings <hugh@blemings.org> Cc: FreeBSD PowerPC ML <freebsd-ppc@freebsd.org> Subject: Re: First row missing when using a monitor Message-ID: <D780F1D7-A56F-489C-BF58-43B7ABE4BCE8@freebsd.org> In-Reply-To: <d0d42b8e-0814-45c6-9c01-91c0029a3803@blemings.org> References: <35999CD2-0530-40C0-B1ED-247EE6B2E08E@freebsd.org> <d0d42b8e-0814-45c6-9c01-91c0029a3803@blemings.org>
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> On 17. Apr 2024, at 15:11, Hugh Blemings <hugh@blemings.org> wrote: >=20 > Hi Michael, All, >=20 > On 17/4/2024 12:09, tuexen@freebsd.org wrote: >> Dear all, >>=20 >> 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. >>=20 >> 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. >>=20 >> This happens with the main branch. >>=20 >> Any idea what could be wrong? >=20 > I'm curious - is this using the framebuffer in the BMC or a separate = video card ? I have no video card installed. >=20 > 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. >=20 > Maybe this gives a next potential step though ? Any idea which code to look at? Best regards Michael >=20 > Cheers, > Hugh >=20 >=20
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