From nobody Thu Feb 2 20:58:58 2023 X-Original-To: freebsd-current@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 4P7B3d6plqz3kYWr for ; Thu, 2 Feb 2023 20:59:09 +0000 (UTC) (envelope-from phk@critter.freebsd.dk) Received: from phk.freebsd.dk (phk.freebsd.dk [130.225.244.222]) (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 did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4P7B3d0XLjz4Q5y for ; Thu, 2 Feb 2023 20:59:08 +0000 (UTC) (envelope-from phk@critter.freebsd.dk) Authentication-Results: mx1.freebsd.org; dkim=none; spf=pass (mx1.freebsd.org: domain of phk@critter.freebsd.dk designates 130.225.244.222 as permitted sender) smtp.mailfrom=phk@critter.freebsd.dk; dmarc=none Received: from critter.freebsd.dk (unknown [192.168.55.3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by phk.freebsd.dk (Postfix) with ESMTPS id 6A52789295; Thu, 2 Feb 2023 20:58:59 +0000 (UTC) Received: from critter.freebsd.dk (localhost [127.0.0.1]) by critter.freebsd.dk (8.17.1/8.16.1) with ESMTPS id 312KwwXI003815 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Thu, 2 Feb 2023 20:58:59 GMT (envelope-from phk@critter.freebsd.dk) Received: (from phk@localhost) by critter.freebsd.dk (8.17.1/8.16.1/Submit) id 312Kwwj8003814; Thu, 2 Feb 2023 20:58:58 GMT (envelope-from phk) Message-Id: <202302022058.312Kwwj8003814@critter.freebsd.dk> To: "parv/FreeBSD" cc: freebsd-current@freebsd.org Subject: Re: Could not change brightness anymore with i915kms & acpi_video modules c 202211 In-reply-to: From: "Poul-Henning Kamp" References: List-Id: Discussions about the use of FreeBSD-current List-Archive: https://lists.freebsd.org/archives/freebsd-current List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-current@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <3812.1675371538.1@critter.freebsd.dk> Date: Thu, 02 Feb 2023 20:58:58 +0000 X-Spamd-Result: default: False [-3.00 / 15.00]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_SHORT(-1.00)[-0.998]; FORGED_SENDER(0.30)[phk@phk.freebsd.dk,phk@critter.freebsd.dk]; R_SPF_ALLOW(-0.20)[+mx]; MIME_GOOD(-0.10)[text/plain]; RCPT_COUNT_TWO(0.00)[2]; MLMMJ_DEST(0.00)[freebsd-current@freebsd.org]; RCVD_TLS_LAST(0.00)[]; R_DKIM_NA(0.00)[]; FREEMAIL_TO(0.00)[gmail.com]; MIME_TRACE(0.00)[0:+]; MID_RHS_MATCH_FROMTLD(0.00)[]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCVD_COUNT_THREE(0.00)[4]; FREEFALL_USER(0.00)[phk]; ARC_NA(0.00)[]; ASN(0.00)[asn:1835, ipnet:130.225.0.0/16, country:EU]; FROM_HAS_DN(0.00)[]; TAGGED_RCPT(0.00)[freebsd]; TO_DN_SOME(0.00)[]; DMARC_NA(0.00)[freebsd.dk]; FROM_NEQ_ENVFROM(0.00)[phk@phk.freebsd.dk,phk@critter.freebsd.dk] X-Rspamd-Queue-Id: 4P7B3d0XLjz4Q5y X-Spamd-Bar: -- X-ThisMailContainsUnwantedMimeParts: N -------- parv/FreeBSD writes: > > Does backlight(8) works for you? > > Thanks for the clue. It does! It does ... > > - I get the same number back via "backlight" without any arguments as > what I gave it earlier. There was no reporting of value being > subtracted by one; Sorry for the delay in reporting back. I consistently read one less back, except for 0 and 100. (This could easily be a BIOS bug) It also looks like the "no-op" behaviour I reported previously have gone away with my latest kernel update. But I see a new behaviour, but this may be intentional: When it comes out of screen-blanking, it goes to 100 (and reports 100). Also happens when an external monitor is connected, which is a bit annoying... -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.