nvidia-settings DO command does nothing

[micoro]

Is there an existing issue for this?

• I have searched the existing issues

Is your issue described in the documentation?

• I have read the documentation

Is your issue present in the nightly release?

• This issue is present in the nightly release

Describe the Bug

Placing the following line as DO command (in application or in configuration) or as detach command does not have any effect:
flatpak-spawn --host nvidia-settings --assign CurrentMetaMode="DP-0: 3440x1440_144 +0+0 {viewportout=2560x1440+440+0}"

Tested with flatpak and appImage.

Expected Behavior

The monitor should change to output at resolution of 2560x1440.

Additional Context

I want to change resolution of my main monitor: it is a widescreen (3440x1440) but my TV is 16:9 so I need to change the dimension from 3440x1440 to 2560x1440.

xrandr is not an option because my monitor does not list 2560x1440 as an option and any tentative I have done with it fails.

nvidia-settings does work changing the output resolution to 2560x1440. Tested multiple times from terminal, also while running sunshine and moonlight from the TV: everything works fine.
The problem is that if I place that very same string in the DO command it does not work.

Host Operating System

Linux

Operating System Version

Manjaro - linux kernel 6.5

Architecture

64 bit

Sunshine commit or version

0.20.0

Package

Linux - flatpak

GPU Type

Nvidia

GPU Model

GeForce 3070 Ti

GPU Driver/Mesa Version

535.113.01

Capture Method (Linux Only)

X11

Config

global_prep_cmd = [{"do":"flatpak-spawn --host nvidia-settings --assign CurrentMetaMode=\"DP-0: 3440x1440_144 +0+0 {viewportout=2560x1440+440+0}\"","undo":""}]
output_name = 1
audio_sink = sink-sunshine-stereo
nvenc_preset = 2
min_log_level = 1
capture = x11

Apps

No response

Relevant log output

[2023:10:12:19:55:09]: Debug: Parsed executable [flatpak-spawn] from command [flatpak-spawn --host nvidia-settings --assign CurrentMetaMode="DP-0: 3440x1440_144 +0+0 {viewportout=2560x1440+440+0}"]
[2023:10:12:19:55:09]: Info: Executing Do Cmd: [flatpak-spawn --host nvidia-settings --assign CurrentMetaMode="DP-0: 3440x1440_144 +0+0 {viewportout=2560x1440+440+0}"]
[2023:10:12:19:55:09]: Debug: Parsed executable [flatpak-spawn] from command [flatpak-spawn --host nvidia-settings --assign CurrentMetaMode="DP-0: 3440x1440_144 +0+0 {viewportout=2560x1440+440+0}"]
[2023:10:12:19:55:09]: Info: Spawning [flatpak-spawn --host nvidia-settings --assign CurrentMetaMode="DP-0: 3440x1440_144 +0+0 {viewportout=2560x1440+440+0}"] in ["/usr/bin"]
[2023:10:12:19:55:09]: Debug: Parsed executable [flatpak-spawn] from command [flatpak-spawn --host nvidia-settings --assign CurrentMetaMode="DP-0: 3440x1440_144 +0+0 {viewportout=2560x1440+440+0}"]
[2023:10:12:19:55:09]: Info: Spawning [flatpak-spawn --host nvidia-settings --assign CurrentMetaMode="DP-0: 3440x1440_144 +0+0 {viewportout=2560x1440+440+0}"] in ["/usr/bin"]



First two lines are the log in case of the DO command from configuration
The last four lines are the log from the DO and detach command from application

[ReenigneArcher]

You might need to prefix the command with sh -c as in our examples. https://docs.lizardbyte.dev/projects/sunshine/en/nightly/about/guides/app_examples.html#changing-resolution-and-refresh-rate-linux-x11

Not sure how you combine that with the flatpak-spawn --host prefix though.

[micoro]

tried with different combinations:
flatpak-spawn --host sh -c "nvidia-settings --assign CurrentMetaMode=\"DP-0: 3440x1440_144 +0+0 {viewportout=2560x1440+440+0}\""

sh -c "flatpak-spawn --host nvidia-settings --assign CurrentMetaMode=\"DP-0: 3440x1440_144 +0+0 {viewportout=2560x1440+440+0}\""

and I installed the AUR package to try it on without the flatpak-spawn

sh -c "nvidia-settings --assign CurrentMetaMode=\"DP-0: 3440x1440_144 +0+0 {viewportout=2560x1440+440+0}\"

All of them fail with code 127.

(from terminal it works without problem)

[ReenigneArcher]

Exit code 127: when the given command is not found within your PATH system variable

[micoro]

SOLVED

I tried multiple options and in the end what worked was to wrap my nvidia-settings function inside a new .sh file and call that file.

sh -c /home/xxx/.screenlayout/steamLinkTV.sh

Probably there could have been some leaner solution and I did something wrong, but this works.

[ehabajmal]

Funnily enough, I ran into the same issue just yesterday and came to the same conclusion (wrap in .sh and call it). PR here is to include it in the docs: LizardByte/Sunshine#1767