From nobody Wed Jun 22 02:49:23 2022 X-Original-To: freebsd-hackers@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id E580786E9E7 for ; Wed, 22 Jun 2022 02:49:25 +0000 (UTC) (envelope-from manu@bidouilliste.com) Received: from mx.blih.net (mx.blih.net [212.83.155.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "mx.blih.net", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4LSSX45kLMz4mKT; Wed, 22 Jun 2022 02:49:24 +0000 (UTC) (envelope-from manu@bidouilliste.com) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bidouilliste.com; s=mx; t=1655866163; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Tx8cJCdDWRUBn/JNYturoX33/i0TvRqrMKoDJ2GERhc=; b=lNM1WAwG5R6c2kicgstqGc60fzuyRNKzjlra2iGrmxCzTjzOxw7mwx3/6JY5CnoG4IHl9J hcd/ITZAUwkAlkSQLSBLJdS1q7gTM5ij6f0OR17LOET4WiHu3F5NWd9GL8BkmjMK3wzF4H TrX+szwfZAIGBAPBj88QkMP+eaOMV2A= Received: from amy (lfbn-idf2-1-1159-38.w90-92.abo.wanadoo.fr [90.92.219.38]) by mx.blih.net (OpenSMTPD) with ESMTPSA id bbd780d0 (TLSv1.3:TLS_AES_256_GCM_SHA384:256:NO); Wed, 22 Jun 2022 02:49:23 +0000 (UTC) Date: Wed, 22 Jun 2022 04:49:23 +0200 From: Emmanuel Vadot To: Ed Maste Cc: Poul-Henning Kamp , FreeBSD Hackers Subject: Re: Reasons for keeping sc(4) and libvgl ? Message-Id: <20220622044923.6e2fac81c1e8205872d9de11@bidouilliste.com> In-Reply-To: References: <20211126160454.3eb827365a02103169ab9adc@bidouilliste.com> <20220621201924.e9b96876c947140ac1f3b7a4@bidouilliste.com> <3d09c86a-9840-f8bf-4725-8098d958a01d@plan-b.pwste.edu.pl> <202206211901.25LJ1uBd067376@critter.freebsd.dk> X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.33; amd64-portbld-freebsd14.0) List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@freebsd.org Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 4LSSX45kLMz4mKT X-Spamd-Bar: - Authentication-Results: mx1.freebsd.org; dkim=pass header.d=bidouilliste.com header.s=mx header.b=lNM1WAwG; dmarc=pass (policy=none) header.from=bidouilliste.com; spf=pass (mx1.freebsd.org: domain of manu@bidouilliste.com designates 212.83.155.74 as permitted sender) smtp.mailfrom=manu@bidouilliste.com X-Spamd-Result: default: False [-1.29 / 15.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; R_DKIM_ALLOW(-0.20)[bidouilliste.com:s=mx]; FREEFALL_USER(0.00)[manu]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; R_SPF_ALLOW(-0.20)[+ip4:212.83.155.74/32:c]; MV_CASE(0.50)[]; MIME_GOOD(-0.10)[text/plain]; NEURAL_HAM_LONG(-1.00)[-1.000]; MID_RHS_MATCH_FROM(0.00)[]; TO_MATCH_ENVRCPT_SOME(0.00)[]; TO_DN_ALL(0.00)[]; DKIM_TRACE(0.00)[bidouilliste.com:+]; DMARC_POLICY_ALLOW(-0.50)[bidouilliste.com,none]; NEURAL_HAM_SHORT(-0.24)[-0.237]; NEURAL_HAM_MEDIUM(-0.55)[-0.552]; MLMMJ_DEST(0.00)[freebsd-hackers]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; SUBJECT_ENDS_QUESTION(1.00)[]; ASN(0.00)[asn:12876, ipnet:212.83.128.0/19, country:FR]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[] X-ThisMailContainsUnwantedMimeParts: N On Tue, 21 Jun 2022 21:23:42 -0400 Ed Maste wrote: > On Tue, 21 Jun 2022 at 15:02, Poul-Henning Kamp 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