Date: Sun, 17 Mar 2019 10:10:45 -0600 From: Warner Losh <imp@bsdimp.com> To: Leon Christopher Dietrich <doralitze@chaotikum.org> Cc: FreeBSD-STABLE Mailing List <freebsd-stable@freebsd.org> Subject: Re: hw.vga.acpi_ignore_no_vga=1 for installation media Message-ID: <CANCZdfqd0C=vknLi9Yrr=odLwokg-oSmSw5XfmDB%2B=CdkhPK2Q@mail.gmail.com> In-Reply-To: <ccfb7722-3703-2995-641d-256990a1c57d@chaotikum.org> References: <mailman.13.1552824000.329.freebsd-stable@freebsd.org> <ccfb7722-3703-2995-641d-256990a1c57d@chaotikum.org>
next in thread | previous in thread | raw e-mail | index | archive | help
I generally like this idea... But two caveats... First, we'd need to update the docs so that folks doing serial installs can unset it.... Though serial installs are a weird beast.... Second, if it's really needed, we should have the installer generate it. alas, only vt can tell us that, but it should be easy to add a sysctl to it that says that it has done video by ignoring the absence of the vga node... Warner On Sun, Mar 17, 2019 at 6:58 AM Leon Christopher Dietrich < doralitze@chaotikum.org> wrote: > Sound's like solid idea. > > A lot of systems out there lack propper ACPI description for VGA and it > would definitly make the installation on such a system much more easy. > > As far as I can tell it doesn't seam to break other things and even low > power system without VGA (like a pcengines apu2) don't seam to suffer. > > On 17.03.19 13:00, FreeBSD-stable-request@freebsd.org wrote: > > Date: Sun, 17 Mar 2019 02:59:12 +0700 > > From: Eugene Grosbein <eugen@grosbein.net> > > To: FreeBSD stable <freebsd-stable@freebsd.org> > > Subject: hw.vga.acpi_ignore_no_vga=1 for installation media > > Message-ID: <912fc95d-5a5e-012b-7385-0f43f50dca65@grosbein.net> > > Content-Type: text/plain; charset=koi8-r > > > > Hi! > > > > Since 11.2-RELESE, default console driver vt(4) checks ACPI table for > presence of VGA in the system. > > It does not initialize console (no input, no output) if ACPI states > there is no VGA adapter. > > > > There are PRs describing many cases when VGA is present but ACPI lies > > and we have a regression compared with 11.1 and earlier: > > FreeBSD cannot be installed interactively onto such a system, leaving > aside serial console. > > > > vt(4) has loader knob to restore pre-11.2 behaviour and ignore ACPI: > > > > hw.vga.acpi_ignore_no_vga=1 > > > > Should we add this unconditionally to the installation media designed > for interactive VGA-based installation? > > > > > > ------------------------------ > > > >
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?CANCZdfqd0C=vknLi9Yrr=odLwokg-oSmSw5XfmDB%2B=CdkhPK2Q>