Date: Mon, 14 Mar 2022 10:16:46 +0100 From: Milan Obuch <freebsd-x11@dino.sk> To: freebsd-x11@freebsd.org Subject: Re: Dynamic multimonitor setup question Message-ID: <20220314101646.0042335c@zeta.dino.sk> In-Reply-To: <20220228093951.30914524@zeta.dino.sk> References: <20220228093951.30914524@zeta.dino.sk>
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On Mon, 28 Feb 2022 09:39:51 +0100 Milan Obuch <freebsd-x11@dino.sk> wrote: > Hi, > > for some time I am using various PCs with multiple video outputs, > either Intel or AMD built-in graphics (i915kms or radeonkms). It is > quite common for such setup presenting more video outputs, which > allows more displays to be connected. > > For some time, I am using some manually started scripts to modify the > setup, kind of > > --- 8< > ----------------------------------------------------------------- > > #! /bin/sh > > xrandr --output DVI-D-1 --auto > xrandr --output VGA-1 --auto > xrandr --output VGA-1 --left-of DVI-D-1 > > --- 8< > ----------------------------------------------------------------- > > to activate monitors to be used independently as larger working area. > If such setup is static box, not moved, everything is OK, no need to > make any change later. > > Recently, I've got a GPD's MicroPC for mobile usage, which changes the > play. There is internal display with resolution 720x1280 (this needs > rotation right in order to be used normally, not breaking one's neck > and having usual corelation mouse to screen), with HDMI output > available to attach a monitor, possible larger (up to 4K works well, > tested). > > I can manually switch the second display on, set resolution as > required (using --auto is the simplest way), start some program and > use it on additional monitor etc. What I'd like to achieve is some > dynamic setup, ideally ability to launch some script when monitor is > detected on HDMI output (connect/disconnect event). > > Has anybody some hints for me? As all notebooks and similar devices > probably have additional video output, this functionality is, I think, > really desired. > I did some searching, googling and similar... a found two ports already in FreeBSD's port collection, x11/arandr and x11/srandrd. The former is just a graphical interface to xrandr, easy to understand and intuitive (similar to the way Windows and MacOS X does multimonitor setup). The latter should do what I am after, but it did not work for me :( Per 'man srandrd', if started with 'srandrd -v -n some_script', it should output some debug data (-v), stay in foreground (-n) and invoke some_script when monitor is being plugged or unplugged. It does not work for me. Something happens just when I invoke 'xrandr' in another terminal - I see some debug output, but the script is not invoked. Is anybody here using x11/srandrd? I can debug the script invocation, but if the event is not detected without external intervention, it is not really usable for me. And I have no experience with debugging the issue in graphics stack... Regards, Milan
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