Re: Reasons for keeping sc(4) and libvgl ?

From: Stefan Blachmann <sblachmann_at_gmail.com>
Date: Wed, 22 Jun 2022 03:45:33 UTC
I would kindly ask to stop pushing for removal of sc.
At least these long-running vt issues should be solved before removal of sc
should be considered at all:
1. Currently vt BREAKS suspend/resume on nvidia and many other video cards,
which just work fine with sc
2. vt does not support DPMS
3. plenty other lesser bugs
Both things are valid reasons why many people - including me - reject using
vt on nvidia cards, because using it would factually downgrade the
computers' capabilities and energy efficiency.

On Wed, Jun 22, 2022 at 4:50 AM Emmanuel Vadot <manu@bidouilliste.com>
wrote:

> On Tue, 21 Jun 2022 21:23:42 -0400
> Ed Maste <emaste@freebsd.org> wrote:
>
> > On Tue, 21 Jun 2022 at 15:02, Poul-Henning Kamp <phk@phk.freebsd.dk>
> wrote:
> > >
> > > But the operative word there is "still", isn't it ?
> > >
> > > There is nothing which prevents vt(4) from doing the right thing is
> there ?
> >
> > Just a simple matter of programming. We should indeed add dpms support
> to vt.
> >
>
>  I don't think so.
>  1/ It's useless when you boot with uefi which 100% of the machines
> produced in the last 5 (10?) years do
>  2/ If you really want to save power, use drm with the appropriate
> driver. Even without runtime power management just loading the driver
> will reduce power consumption on most machines.
>
> --
> Emmanuel Vadot <manu@bidouilliste.com> <manu@FreeBSD.org>
>
>