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

On Wed, 22 Jun 2022 05:45:33 +0200
Stefan Blachmann <sblachmann@gmail.com> wrote:

> 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

 I have no idea about nvidia as I don't have this hardware but what
other video cards are you talking about ? I have no problems with
amdgpu and i915kms here on multiple machines.

> 2. vt does not support DPMS

 See my other mail for this reason.

> 3. plenty other lesser bugs

 Which ones ?

> 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>
> >
> >


-- 
Emmanuel Vadot <manu@bidouilliste.com> <manu@FreeBSD.org>