Date: Sat, 22 Jun 2024 10:58:45 +0000 From: Marcin Cieslak <saper@saper.info> To: Aryeh Friedman <aryeh.friedman@gmail.com> Cc: freebsd-x11@freebsd.org, FreeBSD Mailing List <freebsd-questions@freebsd.org> Subject: Re: Strange screen blanking behavior with HDMI switch Message-ID: <19n3p319-r335-177s-4855-496n35qn45ns@fncre.vasb> In-Reply-To: <CAGBxaX=RX0_VmyOy69HA592RAbyRYLNEi2oNcVz8aOr0fP5jEQ@mail.gmail.com> References: <CAGBxaX=RX0_VmyOy69HA592RAbyRYLNEi2oNcVz8aOr0fP5jEQ@mail.gmail.com>
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--2201072851-1046230415-1719053926=:983 Content-Type: text/plain; format=flowed; charset=US-ASCII On Fri, 21 Jun 2024, Aryeh Friedman wrote: > I have a 3 to 1 HDMI switch (3 inputs to one output) and sometimes > (about 10% of the time) when the screen blanker/screen saver kicks in > (power save mode) the switch thinks the input actually turned off and > goes to another one. Switching is pretty normal, my display does the same when one of the input is blank, which is sometimes annoying. Sometimes I just turn off DPMS for a while (xset -dpms). You can also turn off the display immediately with "xset dpms force off". I don't think that enabling a screen saver (something is displayed on the screen all the time) counts as "power save" or "standby". > switch back the resolution has been reset to > 3840x2160 from my preferred 2560x1440 First, I would recommend trying things without the HDMI switch in between if possible to rule out this component (or not). If I understand correctly, you do not like 3840x2160 mode being offered by the screen. Xorg server with "-verbose 5" should give you the list of available and detected modes in the log, I don't know how to disable certain modes in the config, but you can certainly try some fixed mode in the configuration. Maybe "xrandr --rmmode" can do the right thing. Some XFCE4 specific info from 2018: https://askubuntu.com/a/1054199 Marcin --2201072851-1046230415-1719053926=:983 Content-Type: application/pkcs7-signature; name=smime.p7s Content-Transfer-Encoding: BASE64 Content-Description: S/MIME Cryptographic Signature Content-Disposition: attachment; filename=smime.p7s MIIOdgYJKoZIhvcNAQcCoIIOZzCCDmMCAQExDzANBglghkgBZQMEAgEFADAL BgkqhkiG9w0BBwGgggq9MIIEvDCCA6SgAwIBAgIQeEqpEhjRpCYIUTzTZlVD ozANBgkqhkiG9w0BAQsFADBMMSAwHgYDVQQLExdHbG9iYWxTaWduIFJvb3Qg Q0EgLSBSMzETMBEGA1UEChMKR2xvYmFsU2lnbjETMBEGA1UEAxMKR2xvYmFs U2lnbjAeFw0yMDA5MTYwMDAwMDBaFw0yOTAzMTgwMDAwMDBaMFsxCzAJBgNV BAYTAkJFMRkwFwYDVQQKExBHbG9iYWxTaWduIG52LXNhMTEwLwYDVQQDEyhH bG9iYWxTaWduIEdDQyBSMyBQZXJzb25hbFNpZ24gMSBDQSAyMDIwMIIBIjAN BgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvxvJBqEapaux2/z3J7fFslRO WjKVJ5rCMfWGsg17dmD7NSnG7Spoa8d3htXsls1IMxoO8PyouQajNQqYmlYo xinlqenMNv7CJyEKMOAtglBmD6C/QC7kT+dSx4HfSTs8xmv8veJOldMzF8S/ BEn/tD4w/Dvpg+oXOqDyOiHPTacRFK0QHoq5eEbBmVS8W0rwcaRotO9fGTA+ 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