Date: Wed, 17 Apr 2024 17:14:23 +0200 From: tuexen@freebsd.org To: Justin Hibbits <jhibbits@freebsd.org> Cc: Hugh Blemings <hugh@blemings.org>, FreeBSD PowerPC ML <freebsd-ppc@freebsd.org> Subject: Re: First row missing when using a monitor Message-ID: <603094D4-554C-4072-B105-1C048717AC10@freebsd.org> In-Reply-To: <20240417103430.0a518540@ralga.knownspace> References: <35999CD2-0530-40C0-B1ED-247EE6B2E08E@freebsd.org> <d0d42b8e-0814-45c6-9c01-91c0029a3803@blemings.org> <D780F1D7-A56F-489C-BF58-43B7ABE4BCE8@freebsd.org> <20240417103430.0a518540@ralga.knownspace>
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> On 17. Apr 2024, at 16:34, Justin Hibbits <jhibbits@freebsd.org> wrote: > > On Wed, 17 Apr 2024 16:24:13 +0200 > tuexen@freebsd.org wrote: > >>> 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 >>> >>> >> >> > > You're probably using ofwfb, so the framebuffer configuration is likely > managed by the BMC, not by FreeBSD. I recommend getting a cheap AMD > card, fewer headaches in general (still no acceleration, but at least > the AMD cards are well tested with FreeBSD); otherwise you can ask the > Raptor folks, who might have a clue. OK. Thanks for the hint. I use the PCI slot for network cards, so I prefer to not use a graphic card. It is not a big deal, I can SSH into the box from a different system. Just observed that I'm missing the first line when using vi on the console... Best regards Michael > > - Justin
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