Date: Thu, 15 Jul 2021 10:40:23 +0200 From: Tomasz CEDRO <tomek@cedro.info> To: Aryeh Friedman <aryeh.friedman@gmail.com> Cc: freebsd-multimedia@freebsd.org, FreeBSD Mailing List <freebsd-questions@freebsd.org> Subject: Re: How to turn HDMI video off but keep audio on (slightly OT?) Message-ID: <CAM8r67Csts09CF8YhjD48xJ2SeSp7qK8dH1mBac7R3ALo5GP5A@mail.gmail.com> In-Reply-To: <CAGBxaXk4NbrpO2aLHKAW5wM9Ex6F4ineJJcji108fox--5RH3w@mail.gmail.com> References: <CAGBxaXkPJDOtkmvBNptqX4YxzU7uPob618s5nS1QsXCp6t6v_w@mail.gmail.com> <CAM8r67DTamrahicF-Mjgr=4Z8g6tmNt%2B-BLeS4NVe2B6_AerPA@mail.gmail.com> <CAGBxaXk4NbrpO2aLHKAW5wM9Ex6F4ineJJcji108fox--5RH3w@mail.gmail.com>
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On Thu, Jul 15, 2021, 10:21 Aryeh Friedman wrote: > > On Thu, Jul 15, 2021 at 4:09 AM Tomasz CEDRO wrote: > >> there is /dev/dsp for each audio sink. have you tried cat /dev/random >> >/dev/dspN for N=0,1,.. and check wherher noise is produced over hdmi when >> monitor is enabled/disabled in/without WM? >> > > Already tried that (should of mentioned it in the original post) > then you may try to put monitor into some sort of dpms sleep mode (see xset s and xset dpms), so it does not power off, just keep audio out, that may depend on the particular device how it has power management implemented. this may contain some hints: https://unix.stackexchange.com/questions/52263/how-can-i-put-my-hdmi-display-into-and-out-of-power-save-mode -- CeDeROM, SQ7MHZ, http://www.tomek.cedro.info >
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