Date: Wed, 17 Apr 2024 10:34:30 -0400 From: Justin Hibbits <jhibbits@FreeBSD.org> To: tuexen@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: <20240417103430.0a518540@ralga.knownspace> In-Reply-To: <D780F1D7-A56F-489C-BF58-43B7ABE4BCE8@freebsd.org> References: <35999CD2-0530-40C0-B1ED-247EE6B2E08E@freebsd.org> <d0d42b8e-0814-45c6-9c01-91c0029a3803@blemings.org> <D780F1D7-A56F-489C-BF58-43B7ABE4BCE8@freebsd.org>
next in thread | previous in thread | raw e-mail | index | archive | help
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. - Justin
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20240417103430.0a518540>