Gamescope not working Assertion `u8BitFormat != VK_FORMAT_UNDEFINED' failed

[Mordius]

Whenever I try to use gamescope with any game (steam and no steam as well) I get the following error:

gamescope: ../gamescope/src/wayland_backend.cpp:1280: virtual void gamescope::CWaylandBackend::GetPreferredOutputFormat(VkFormat*, VkFormat*) const: Assertion u8BitFormat != VK_FORMAT_UNDEFINED' failed.`

Here's the full output:

ATTENTION: default value of option vk_khr_present_wait overridden by environment. ATTENTION: default value of option vk_khr_present_wait overridden by environment. vulkan: selecting physical device 'AMD Radeon RX 580 Series (RADV POLARIS10)': queue family 1 (general queue family 0) vulkan: physical device does not support DRM format modifiers wlserver: [backend/headless/backend.c:67] Creating headless backend xdg_backend: Seat name: seat0 vulkan: supported DRM formats for sampling usage: gamescope: ../gamescope/src/wayland_backend.cpp:1280: virtual void gamescope::CWaylandBackend::GetPreferredOutputFormat(VkFormat*, VkFormat*) const: Assertionu8BitFormat != VK_FORMAT_UNDEFINED' failed.
zsh: IOT instruction (core dumped) gamescope `

I tried using both gamescope and gamescope-git, same error using both. I'm using arch linux and my gpu is AMD Radeon RX 580 with RADV drivers (amdvlk is not installed).

I wasn't getting this error when I first installed gamescope like 1 and a half month ago, so maybe it broke with an update. Also here's journalctl's log:

#3 0x00007060c8822f38 n/a (libvulkan_radeon.so + 0x222f38)
#4 0x00007060c8835c35 n/a (libvulkan_radeon.so + 0x235c35)
#5 0x00007060c8835d09 n/a (libvulkan_radeon.so + 0x235d09)
#6 0x00007060c89e01b5 n/a (libvulkan_radeon.so + 0x3e01b5)
#7 0x00007060c89d0184 n/a (libvulkan_radeon.so + 0x3d0184)
#8 0x00007060c8a1dad4 n/a (libvulkan_radeon.so + 0x41dad4)
#9 0x00007060c87512d0 n/a (libvulkan_radeon.so + 0x1512d0)
#10 0x00007060c8729c5e n/a (libvulkan_radeon.so + 0x129c5e)
#11 0x00007060c872a582 n/a (libvulkan_radeon.so + 0x12a582)
#12 0x00007060c872a88b n/a (libvulkan_radeon.so + 0x12a88b)
#13 0x0000632c025066b2 n/a (gamescope + 0x776b2)
#14 0x0000632c02506921 n/a (gamescope + 0x77921)
#15 0x00007060dbae1943 execute_native_thread_routine (libstdc++.so.6 + 0xe1943)
#16 0x00007060db88455a n/a (libc.so.6 + 0x8b55a)
#17 0x00007060db901a5c n/a (libc.so.6 + 0x108a5c)

Stack trace of thread 17975:
#0  0x00007060db880ebe n/a (libc.so.6 + 0x87ebe)
#1  0x00007060db883750 pthread_cond_wait (libc.so.6 + 0x8a750)
#2  0x00007060c8825e4c n/a (libvulkan_radeon.so + 0x225e4c)
#3  0x00007060c882e38c n/a (libvulkan_radeon.so + 0x22e38c)
#4  0x00007060db88455a n/a (libc.so.6 + 0x8b55a)
#5  0x00007060db901a5c n/a (libc.so.6 + 0x108a5c)

Stack trace of thread 17974:
#0  0x00007060db8f40df __poll (libc.so.6 + 0xfb0df)
#1  0x00007060d1d6c306 n/a (libglib-2.0.so.0 + 0xb9306)
#2  0x00007060d1d0c712 g_main_context_iteration (libglib-2.0.so.0 + 0x59712)
#3  0x00007060d03eefde n/a (libdconfsettings.so + 0x5fde)
#4  0x00007060d1d3b065 n/a (libglib-2.0.so.0 + 0x88065)
#5  0x00007060db88455a n/a (libc.so.6 + 0x8b55a)
#6  0x00007060db901a5c n/a (libc.so.6 + 0x108a5c)

Stack trace of thread 17973:
#0  0x00007060db8f40df __poll (libc.so.6 + 0xfb0df)
#1  0x00007060d1d6c306 n/a (libglib-2.0.so.0 + 0xb9306)
#2  0x00007060d1d0ddc7 g_main_loop_run (libglib-2.0.so.0 + 0x5adc7)
#3  0x00007060d073c83c n/a (libgio-2.0.so.0 + 0x10983c)
#4  0x00007060d1d3b065 n/a (libglib-2.0.so.0 + 0x88065)
#5  0x00007060db88455a n/a (libc.so.6 + 0x8b55a)
#6  0x00007060db901a5c n/a (libc.so.6 + 0x108a5c)
ELF object binary architecture: AMD x86-64

[jobukkit]

Same issue with same graphics card.

[ammgws]

Downgrade to 3.14.2 for now

[migrgh]

#1604