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d.ALT

Member

Registered: 2019-05-10

Posts: 951

Updates about an old topic (2020-04-08)

<EDIT>
I forgot to specify: as today, the workaround of the mentioned topic is no more needed.
</EDIT>

Sorry, but I'm lost:
- don't know if this is the right place.
- don't want to necro-post (is it actually necro-posting from 2020 discussion?).

Here's the original post: [WORKAROUND] No sounds output via DisplayPort, but pulseaudio works

My issue is... Solved... But I actually don't know how, neither what the solution is.

Here's my current setup (pretty standard, actually):

• Computer--->DisplayPort output--->Unidirectional DisplayPort-to-HDMI adapter--->HDMI cable--->HDMI input (Input Signal Plus*)--->TV

• Latest linux and linux-zen are working

• Latest ALSA & Pipewire: alsa-lib, alsa-plugins, alsa-utils, pipewire, pipewire-alsa, pipewire-pulse

• Install xf86-video-intel drivers

• Use xf86-video-intel drivers:

  /etc/X11/xorg.conf.d/20-intel.conf
  
  Section "Device"
  	Identifier	"Intel Graphics"
  	Driver		"intel"
  EndSection

• Plasma with Xorg

Setting 4K@60 resolution:
ATTENTION: modesetting works with DP1, intel works with hyphen (ASCII code 45) DP-1

$ cvt -r 3840 2160
$ xrandr --newmode "4Kr" 533.25 3840 3888 3920 4000 2160 2163 2168 2222 +HSync -VSync
$ xrandr --addmode DP-1 4Kr
$ xrandr --output DP-1 --mode 4Kr

Useful link: Video Timings Calculator

*Input Signal Plus:

Press the Home button on your TV remote, and then navigate to and select Settings > General.
Select External Device Manager, and then select Input Signal Plus.
Select the HDMI port you connected your device to, and then press Select to turn the feature On.

Last edited by d.ALT (2022-10-24 17:11:00)

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<49,17,III,I>    Fama di loro il mondo esser non lassa;
<50,17,III,I>    misericordia e giustizia li sdegna:
<51,17,III,I>    non ragioniam di lor, ma guarda e passa.

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 23,447

Re: Updates about an old topic (2020-04-08)

You basically enforce a continouous audio stream. There are a few broken HDMI adapters/displays that go into too big of a suspend they can't properly wake out of. By playing "something" you keep the audio stream alive.

The "more proper" way of doing that would be to try /etc/modprobe.d/disableHDMIsilent.conf

options snd-hda-codec-hdmi enable_silent_stream=0

or so.

d.ALT

Member

Registered: 2019-05-10

Posts: 951

Re: Updates about an old topic (2020-04-08)

Hey V1del, actually the issue has been resolved "by itself": there is NO more need for the workaround, fortunately.

---

<49,17,III,I>    Fama di loro il mondo esser non lassa;
<50,17,III,I>    misericordia e giustizia li sdegna:
<51,17,III,I>    non ragioniam di lor, ma guarda e passa.

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 23,447

Re: Updates about an old topic (2020-04-08)

Ah, well then kernel updates likely fixed/added a quirk eventually.