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[62.13.8.86]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-5969dbcd26csm6328942e87.95.2025.11.26.13.31.20 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 26 Nov 2025 13:31:20 -0800 (PST) Message-ID: <77c2a2fb-ac5f-4b4a-98c6-660a39ee87b2@gmail.com> Date: Wed, 26 Nov 2025 22:31:20 +0100 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 User-Agent: Mozilla Thunderbird Subject: Re: FreeBSD/X11: Howto revive DisplayPort? To: FreeBSD User , freebsd-x11@freebsd.org, freebsd-current@freebsd.org References: <20251126163059.3376d3e8@hermann> Content-Language: sv-SE From: Lars Tunkrans Organization: Retiered In-Reply-To: <20251126163059.3376d3e8@hermann> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Spamd-Bar: ---- X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN(0.00)[asn:15169, ipnet:2a00:1450::/32, country:US] X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Rspamd-Queue-Id: 4dGt6N23kbz3bdS HI    Yes I  have  same experience.    I beleive its because the  DDC/ EDID   info sent from screen over  the  connection cable    is  lost  if  the  KVM  and screen is not connected to the computer at start up.     If I make sure that  the screen is attached to  the computer when the computer powers up      a  Usable resoultion/timing is selected by the graphics card.   Regards. Den 2025-11-26 kl. 16:37, skrev FreeBSD User: > 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 > -- ------------------------- Lars Tunkrans Oracle SPARC/Solaris System Administrator Fujitsu M12 SPARC Specilaist