I have created a network namespace to separate connections through a VPN, and it runs as the same user account as I use for everything else; however, it is not able to play music/use microphone

inside the namespace:

aplay -l  
card 2: Generic_1 [HD-Audio Generic], device 0: ALCS1200A Analog [ALCS1200A Analog]
  Subdevices: 0/1
  Subdevice #0: subdevice #0
card 2: Generic_1 [HD-Audio Generic], device 1: ALCS1200A Digital [ALCS1200A Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0  

arecord -l

card 2: Generic_1 [HD-Audio Generic], device 0: ALCS1200A Analog [ALCS1200A Analog]
  Subdevices: 0/1
  Subdevice #0: subdevice #0
card 2: Generic_1 [HD-Audio Generic], device 2: ALCS1200A Alt Analog [ALCS1200A Alt Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0 

I also tried running as another user, but the effect is the same, which is why for simplicity I resorted to using the same user that can play/record normally

what should I look for in configuring it ?

I have 2x PCIe X16 and 1x PCIe 1x slots that are not being used. Given that Linux has extensive hardware support, there are probably users with interesting PCI card usages

Aside from traditional usages like network/wireless/bluetooth/sound that can easily be used as USB (or built in advanced sound support in the MOBO), what are your use cases with PCIe?

I was wondering if anyone else has had luck configuring SVP with MPV on wayland (AMD). I followed the archwiki https://wiki.archlinux.org/title/Mpv

This is ~/.config/mpv/mpv.conf

autofit-larger=100%x100%
hwdec=auto-copy
profile=svp
vf=format=fmt=yuv420p

[svp]
input-ipc-server=/tmp/mpvsocket     # Receives input from SVP
hr-seek-framedrop=no                # Fixes audio desync
watch-later-options-remove=vf       # Do not remember SVP's video filters
no-resume-playback

When SVP takes control of the video it pauses and never gets playing again

mpv stdout shows (pause) for a single sec, then proceeds normally, but the video stays frozen

[autoconvert] Converting nv12 -> yuv420p
AO: [pipewire] 48000Hz stereo 2ch floatp
VO: [gpu] 3840x2160 yuv420p

SVP has no option to control the video at all; it just says "playing whatever at 60fps"

Through amdgpu_top several modes are available, with 1440x3440@159.96 being the preferred

however after turning on/off the display, it reverts to 144hz

how can I make 160hz the default ? kde settings shows "A new output has been added. Settings have been reloaded" when this happens; and the previous 160hz is saved "for any display arrangement"

radeon vega cezanne wayland kde

I use https://github.com/slingamn/namespaced-openvpn to have a isolated namespace and VPN connection

On X, these two steps would allow me to run a GUI program in the protected namespace. So I could have .e.g an IDE configuration for my main user/personal projects, and another entirely different instance of the same IDE for work because they use different users

sudo xhost '+si:localuser:user'
sudo ip netns exec protected sudo -u user -i

On Wayland, although the protected shell is created fine, GUI programs don't start. E.g fgor Dolphin

error: XDG_RUNTIME_DIR is invalid or not set in the environment.
Failed to create wl_display (No such file or directory)

I've tried to preserve the env without success:

sudo -E ip netns exec protected sudo -u user -i

It seems that I access to the wayland socket is a must for this to work

This discussion has a nuke option - giving 777 access to the dir where the wayland socket is, and another less permissive approach adding the users to a group and giving access to a new location where the wayland socket is created

https://stackoverflow.com/questions/41736528/linux-wayland-display-multiple-user

Is this second approach secure? If not, which other steps could I take to achieve what I did in X?

On X I use

xmodmap -e "pointer = 3 2 1" // lefthand
xmodmap -e "pointer = 1 2 3" //righthand

On wayland/KDE, I must change it manually via system settings; and any other application that run on xwayland doesn't respect this

is it possible to change everything via cli, for both wayland and xwayland?

please help an old and tired boomer that is trying to stick with wayland and nvidia this time

Think Zoom, Teams, google meet etc

When sharing the screen, it can see everything the user sees. Would it be possible to isolate what it sees only to GUI applications ran by the same user? If I run these as an unprivileged user via xhost, they don't really work well. Sandboxing via bubblewrap requires knowledge beyond my current skills and I'm not sure if it would work.

Has anyone

I want to configure a local webcam to stream (and possibly record) a live feed open to the internet, and acess it half-world away while traveling, using FOSS only acessing it via Android VLC

This guide was quite comprehensive; however the packages for nginx-rtmp are quite abandoned in arch linux. So I thought maybe WebRTC could be an alternative - the communication itself should be encrypted, which WebRTC seems to do; however, I still can't figure out if VLC will handle this well

Also, it seems that I might need to self-host a VPN to achieve this? What are my options? Has anyone else done this ?

Is there an open source app or tool like TestDisk/PhotoRec, but for Android?