Error: Failed to create SDL window: Installed Vulkan doesn't implement the VK_KHR_surface extension

[bigjoe54321]

I get this error whenever I click the "Launch" button on the TC2 localhost webpage after I
load TC2Launcher-linux-qt or TC2Launcher-linux.

Here are my system specs, fetched by fastfetch:

OS: CachyOS x86_64
Kernel: Linux 6.19.0-2-cachyos
Display (VSC1B35): 1920x1080 in 24", 144 Hz [External]
OpenGL: 4.6.0 NVIDIA 590.48.01
Vulkan: 1.4.325 - NVIDIA [590.48.01]
DE: KDE Plasma 6.5.5
WM: KWin (Wayland)
CPU: AMD Ryzen 7 5800X (16) @ 4.85 GHz
GPU: NVIDIA GeForce RTX 3070 [Discrete]
Memory: 7.77 GiB / 15.52 GiB (50%)

[sunsetorange1]

same issue, same de, same distro, also using nvidia card

[any1here]

This seems like you're missing the 32-bit versions of the Vulkan libraries.

[mastercoms]

TC2 is 64-bit and runs in Steam Linux Runtime 3.0. Maybe this affects things.

[mastercoms]

Please retest with the new version.

[DonKatsu]

1.0.3 now gives me this error. GPU is a 9070. mesa 26.0.4.

[mastercoms]

Can you please let me know the output of these commands?

echo $VK_ICD_FILENAMES
echo $VK_DRIVER_FILES
echo $VK_ADD_DRIVER_FILES

[bigjoe54321]

Please retest with the new version.

Here's what I see when I retest TC2Launcher-linux (version 1.0.3) on CachyOS (DE: KDE Plasma 6.6.3).

Screencast_20260406_142536.mp4

Can you please let me know the output of these commands?

echo $VK_ICD_FILENAMES
echo $VK_DRIVER_FILES
echo $VK_ADD_DRIVER_FILES

I don't see any output after using those commands.

[DonKatsu]

Likewise.

[mastercoms]

Do either of you have integrated graphics cards in addition to your discrete graphics?

[DonKatsu]

I do not. CPU is 5900X.

[bigjoe54321]

Do either of you have integrated graphics cards in addition to your discrete graphics?

I don't have an iGPU in this PC. My GPU is an NVIDIA RTX 3070, and my CPU is an AMD Ryzen 7 5800X.

[mastercoms]

I have added more logging to maybe figure out the issue.

[DonKatsu]

Now with 1.0.4 the fallback GUI is automatically opening in Firefox, and isn't broken. And the Browse Install Folder button opens in Dolphin. So that's good.

But still nothing trying to launch through it. Here's the console output.

~/TC2
❯ ./TC2Launcher-linux
07-Apr-26 01:27:19 [INFO ]  Fallback GUI available at http://localhost:48564/entry
07-Apr-26 01:27:20 [INFO ]  Latest asset already downloaded.
07-Apr-26 01:27:22 [INFO ]  Latest asset already downloaded.
07-Apr-26 01:27:23 [ERROR]  Could not create Vulkan instance: -9
07-Apr-26 01:27:23 [ERROR]  GPU minimum requirements not met.

[mastercoms]

Good to hear that those are fixed now. I have added more logging again, to figure out what exactly is causing Vulkan to fail loading drivers. Hopefully, we can figure this out soon. Thanks a lot for continuing to test and assist on this!