From nobody Mon Dec 1 01:28:48 2025 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 4dKRBb0JM4z6HchX for ; Mon, 01 Dec 2025 01:28:55 +0000 (UTC) (envelope-from groenveld@acm.org) Received: from 013.lax.mailroute.net (013.lax.mailroute.net [199.89.1.16]) (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 "mailroute.net", Issuer "R12" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4dKRBY3lzqz3VsG for ; Mon, 01 Dec 2025 01:28:53 +0000 (UTC) (envelope-from groenveld@acm.org) Authentication-Results: mx1.freebsd.org; dkim=pass header.d=acm.org header.s=mr01 header.b=FBQ9YdTe; dmarc=pass (policy=reject) header.from=acm.org; spf=pass (mx1.freebsd.org: domain of groenveld@acm.org designates 199.89.1.16 as permitted sender) smtp.mailfrom=groenveld@acm.org Received: from localhost (localhost [127.0.0.1]) by 013.lax.mailroute.net (Postfix) with ESMTP id 4dKRBW1pfpzlfl5T for ; Mon, 1 Dec 2025 01:28:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=acm.org; h= message-id:date:date:content-transfer-encoding:content-id :content-type:content-type:mime-version:references:in-reply-to :subject:subject:from:from:received:received; s=mr01; t= 1764552530; x=1767144531; bh=0E2q/3UERpSJ4hr7G9rKGL7M36iej1R//N/ j3NyP64M=; b=FBQ9YdTewz5zSG6x8icgGOnSFpjP0Q9zuLLPNac18HlsY04QXi/ 5Xo/+3kEmTnAzx3FxDuNyj3+MfUKg/7bNljc3hMF5cghE+3byH++6Blnw6p1V9n/ YCQxFbBOE06DYuyVVE6YNXuAKr3S0iaDg/jebbD0M5of8f6AK6lFVROl4yMNGSzs c4+a1BX7Q5cmf7+hjYUs9Ba0QjHmgYLu4U1vup5srdqwAEdy3wl4aOcf1yVvXJu5 ttzPSQ//y6PcsuLAobvEazYzGfAendH8Y3YWucJvlaqnVgtXw9Ae5GnuQnpf1td3 3JhQMLBzlGhpRIc+7uc2/GgjVWfxIL/njjg== X-Virus-Scanned: by MailRoute Received: from 013.lax.mailroute.net ([127.0.0.1]) by localhost (013.lax [127.0.0.1]) (mroute_mailscanner, port 10029) with LMTP id sEC2yT8kf0rQ for ; Mon, 1 Dec 2025 01:28:50 +0000 (UTC) Received: from mail.groenveld.us (mail.groenveld.us [207.68.114.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) (Authenticated sender: groenveld@acm.org) by 013.lax.mailroute.net (Postfix) with ESMTPSA id 4dKRBV23snzlfl5R for ; Mon, 1 Dec 2025 01:28:49 +0000 (UTC) From: John D Groenveld X-uri: To: freebsd-current@FreeBSD.org Subject: Re: FreeBSD/X11: Howto revive DisplayPort? In-reply-to: Your message of "Fri, 28 Nov 2025 08:35:54 +0100." <950fe459-217b-4066-99d8-1fa3247d0d84@gmail.com> References: <20251126163059.3376d3e8@hermann> <77c2a2fb-ac5f-4b4a-98c6-660a39ee87b2@gmail.com><950fe459-217b-4066-99d8-1fa3247d0d84@gmail.com> 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: <17746.1764552528.1@mail.groenveld.us> Content-Transfer-Encoding: quoted-printable Date: Sun, 30 Nov 2025 20:28:48 -0500 Message-Id: <4dKRBV23snzlfl5R@013.lax.mailroute.net> X-Spamd-Bar: ----- X-Spamd-Result: default: False [-5.08 / 15.00]; DWL_DNSWL_MED(-2.00)[acm.org:dkim]; NEURAL_HAM_LONG(-1.00)[-1.000]; SUBJECT_ENDS_QUESTION(1.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.98)[-0.981]; DMARC_POLICY_ALLOW(-0.50)[acm.org,reject]; R_DKIM_ALLOW(-0.20)[acm.org:s=mr01]; R_SPF_ALLOW(-0.20)[+ip4:199.89.0.0/21]; RCVD_IN_DNSWL_LOW(-0.10)[199.89.1.16:from]; MIME_GOOD(-0.10)[text/plain]; RCPT_COUNT_ONE(0.00)[1]; RCVD_VIA_SMTP_AUTH(0.00)[]; MIME_TRACE(0.00)[0:+]; MISSING_XM_UA(0.00)[]; ARC_NA(0.00)[]; RCVD_COUNT_THREE(0.00)[3]; MLMMJ_DEST(0.00)[freebsd-current@FreeBSD.org]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; RECEIVED_HELO_LOCALHOST(0.00)[]; TO_DN_NONE(0.00)[]; PREVIOUSLY_DELIVERED(0.00)[freebsd-current@freebsd.org]; TO_MATCH_ENVRCPT_ALL(0.00)[]; RCVD_TLS_LAST(0.00)[]; DKIM_TRACE(0.00)[acm.org:+] X-Rspamd-Queue-Id: 4dKRBY3lzqz3VsG In message <950fe459-217b-4066-99d8-1fa3247d0d84@gmail.com>, Paul Floyd wr= ites: >I use a ugreen 4port HDMI KVM for Mac mini/workstation/old workstation/R = >Pi. Sometimes if I boot a device and forget to switch the KVM to the = >correct port then I get a black screen and have to ssh to whatever to = >reboot it. I use this workaround on a Macmini5,3: # kldload i915kms messages includes these: [drm] Initialized i915 1.6.0 20201103 for drmn0 on minor 0 drmn0: [drm] Cannot find any crtc or sizes drmn0: [drm] Cannot find any crtc or sizes VT: Replacing driver "efifb" with new "drmfb". start FB_INFO: height=3D1200 width=3D1920 depth=3D32 pbase=3D0x90002000 vbase=3D0xfffff80090002000 name=3Ddrmn0 id=3Di915drmfb flags=3D0x0 stride=3D7680 end FB_INFO John groenveld@acm.org