From nobody Wed Nov 26 15:37:21 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 4dGkG573C0z6JDJC; Wed, 26 Nov 2025 15:37:33 +0000 (UTC) (envelope-from freebsd@walstatt-de.de) Received: from smtp6.goneo.de (smtp6.goneo.de [IPv6:2001:1640:5::8:31]) (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 4dGkG44XbDz3RRY; Wed, 26 Nov 2025 15:37:32 +0000 (UTC) (envelope-from freebsd@walstatt-de.de) Authentication-Results: mx1.freebsd.org; dkim=pass header.d=walstatt-de.de header.s=DKIM001 header.b=kZbWh7Uk; dmarc=none; spf=pass (mx1.freebsd.org: domain of freebsd@walstatt-de.de designates 2001:1640:5::8:31 as permitted sender) smtp.mailfrom=freebsd@walstatt-de.de Received: from hub2.goneo.de (hub2.goneo.de [85.220.129.53]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by smtp6.goneo.de (Postfix) with ESMTPS id DD3D52405CB; Wed, 26 Nov 2025 16:37:23 +0100 (CET) Received: from hub2.goneo.de (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by hub2.goneo.de (Postfix) with ESMTPS id 561C124003C; Wed, 26 Nov 2025 16:37:22 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=walstatt-de.de; s=DKIM001; t=1764171442; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=FCSpEwMld5VsFiQn72+Od48WuaZdGMPRjT/qC02eBSY=; b=kZbWh7UkxJPF8TLsVdkm0l/78o5m3yJ15Mwva/Fge++35S04pDflAH/trwLWAAerXBGoHa 3cmeykkJ4ls0svXsWeiHEkHHyKWmD/qMh3MjM1e7i5xkYxHDaOdgnDW0gVY+VGapwiZzoc tQ+wlunXQH4P6mN6OvLYHZDXz6SOZQEESBOc/MB/0DB1qt9F+8mIoksu6YHcNcuwMwIhsk bGAukuZOsHc0CtXsELA/hBj6fo8QZMnMGSftQRctvT71TjEpotsqoC8pM6lb2W5eIitFPD zXpgJReKXGJ3HRok2r71gnmhnWqyS5GhFWFGWkHi2Bp6TQq4k+KKMlKziTO3mw== Received: from hermann (dynamic-2a02-3100-2903-d302-cb42-cf69-eb1a-f5fe.310.pool.telefonica.de [IPv6:2a02:3100:2903:d302:cb42:cf69:eb1a:f5fe]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (prime256v1) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by hub2.goneo.de (Postfix) with ESMTPSA id 12E1924002F; Wed, 26 Nov 2025 16:37:22 +0100 (CET) Date: Wed, 26 Nov 2025 16:37:21 +0100 From: FreeBSD User To: freebsd-x11@freebsd.org, freebsd-current@freebsd.org Subject: FreeBSD/X11: Howto revive DisplayPort? Message-ID: <20251126163059.3376d3e8@hermann> 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-Transfer-Encoding: 7bit X-Rspamd-UID: 6d5996 X-Rspamd-UID: fc90ae X-Spamd-Bar: - X-Spamd-Result: default: False [-1.99 / 15.00]; SUBJECT_ENDS_QUESTION(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.99)[-0.994]; MID_RHS_NOT_FQDN(0.50)[]; R_DKIM_ALLOW(-0.20)[walstatt-de.de:s=DKIM001]; R_SPF_ALLOW(-0.20)[+ip6:2001:1640:5::8:0/112]; MIME_GOOD(-0.10)[text/plain]; RCVD_VIA_SMTP_AUTH(0.00)[]; RCVD_TLS_ALL(0.00)[]; ASN(0.00)[asn:25394, ipnet:2001:1640::/32, country:DE]; ARC_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; MISSING_XM_UA(0.00)[]; DMARC_NA(0.00)[walstatt-de.de]; RCVD_COUNT_THREE(0.00)[3]; MLMMJ_DEST(0.00)[freebsd-current@freebsd.org,freebsd-x11@freebsd.org]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_TWO(0.00)[2]; FROM_EQ_ENVFROM(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; TO_DN_NONE(0.00)[]; DKIM_TRACE(0.00)[walstatt-de.de:+] X-Rspamd-Queue-Id: 4dGkG44XbDz3RRY Using FreeBSD CURREN and FreeBSD STABLE/15. Also, most systems are attached to a KVM switch, connected via DP. Hosts booting all UEFI. On hosts using X11/xdm GUI, switching forth and back to the output/host I want to use DP does obviously not "lose" DP output, so after graphics has been initialized I'm able to see the GUI. The situation is completely different with plain consoles, provided by FreeBSD's EFI/UEFI simple framebuffer device driver. Working on the console on one host, switching to another host, working there and trying to switch back leaves me with no output anymore! I see this behaviour with different types of KVM switches I have at hand. Can this behaviour be changed, even with no X11? Thanks in advance and wishes, O. Hartmann