Date: Wed, 22 Jun 2022 06:36:49 +0200 From: Emmanuel Vadot <manu@bidouilliste.com> To: Stefan Blachmann <sblachmann@gmail.com> Cc: Ed Maste <emaste@freebsd.org>, Poul-Henning Kamp <phk@phk.freebsd.dk>, FreeBSD Hackers <freebsd-hackers@freebsd.org> Subject: Re: Reasons for keeping sc(4) and libvgl ? Message-ID: <20220622063649.9954cfc96102bbcd0e8201f4@bidouilliste.com> In-Reply-To: <CACc-My0q-Ods_O-TDru=tEwjSOaUJZZd=ZTzD46nY1gjGYO_VA@mail.gmail.com> References: <20211126160454.3eb827365a02103169ab9adc@bidouilliste.com> <20220621201924.e9b96876c947140ac1f3b7a4@bidouilliste.com> <3d09c86a-9840-f8bf-4725-8098d958a01d@plan-b.pwste.edu.pl> <202206211901.25LJ1uBd067376@critter.freebsd.dk> <CAPyFy2Ca83X042jc5QE-g=eHAfnukHScrTSyaLRi4UxeTBasJQ@mail.gmail.com> <20220622044923.6e2fac81c1e8205872d9de11@bidouilliste.com> <CACc-My0q-Ods_O-TDru=tEwjSOaUJZZd=ZTzD46nY1gjGYO_VA@mail.gmail.com>
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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>
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