[Bug]: Unable to initialize Vulkan: ERROR_EXTENSION_NOT_PRESENT

[jschaeff]

Steps for reproducing the issue

Launched wluma the first time.

What is the buggy behavior?

Wluma panicks because of a missing extension.

What is the expected behavior?

Wluma should work.

I followed some guides to install Vulkan, so I expect the extension to be available, somehow.

Logs

RUST_LOG=debug wluma                                               
[2023-11-21T13:40:58Z DEBUG wluma] Using Config {
        als: Iio {
            path: "/sys/bus/iio/devices",
            thresholds: {
                800: "outdoors",
                20: "dark",
                0: "night",
                250: "normal",
                500: "bright",
                80: "dim",
            },
        },
        output: [
            Backlight(
                BacklightOutput {
                    name: "eDP-1",
                    path: "/sys/class/backlight/intel_backlight",
                    capturer: Wlroots,
                    min_brightness: 1,
                },
            ),
            Backlight(
                BacklightOutput {
                    name: "keyboard-dell",
                    path: "/sys/bus/platform/devices/dell-laptop/leds/dell::kbd_backlight",
                    capturer: None,
                    min_brightness: 0,
                },
            ),
        ],
    }
[2023-11-21T13:40:58Z INFO  wluma] Continue adjusting brightness and wluma will learn your preference over time.
thread 'predictor-eDP-1' panicked at src/frame/capturer/wlroots.rs:86:44:
Unable to initialize Vulkan: ERROR_EXTENSION_NOT_PRESENT
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Version

wluma 4.3.0-1 packaged by archlinux.

Environment

Linux vogon 6.6.1-arch1-1 #1 SMP PREEMPT_DYNAMIC Wed, 08 Nov 2023 16:05:38 +0000 x86_64 GNU/Linux

Processes:
1958 sway
2031 swaybg
2061 swayrd
2062 swaync
2064 swayidle
2223 swaync-client
33009 swaync-client

Packaged installed: 
clang 16.0.6-1
rust 1:1.73.0-1
sway 1:1.8.1-3
swaybg 1.2.0-1
swayidle 1.8.0-1
swaylock-effects-git r420.7c5681c-1
swaync 0.9.0-1
swayr 0.27.1-1
vulkan-icd-loader 1.3.269-1
vulkan-tools 1.3.269-1
wlroots 0.16.2-2

[jschaeff]

This seems related to a closed issue #38

[maximbaz]

Hello, you are right that it is related, it looks like your GPU does not support the necessary feature (which vulkan calls extensions) to allow wluma to get your screen contents. You can configure capturer=none to not capture the screen, then wluma would start, but obviously without that part of the functionality.

[jschaeff]

Yes, I confirm that wluma runs with "capturer=none". Too bad for the feature wich looks super great.

Thanks for your great work !

[maximbaz]

Happy to help! Subscribe to #5 and #62, if they ever get done, who knows, maybe there will be another pathway for wluma to get screen contents on your hardware! Otherwise do not hesitate to reach out 😉