Crash on linux with wayland and external monitor

[gucio321]

Ebitengine Version

6eb0271

Operating System

• Windows
• macOS
• Linux
• FreeBSD
• OpenBSD
• Android
• iOS
• Nintendo Switch
• PlayStation 5
• Xbox
• Web Browsers

Go Version (go version)

go version go1.23.1 linux/amd64

What steps will reproduce the problem?

• run any example
• turn off monitor
• turn monitor back on

What is the expected result?

everything should be as it was before turning monitor off

What happens instead?

X Error of failed request:  BadRRCrtc (invalid Crtc parameter)
  Major opcode of failed request:  140 (RANDR)
  Minor opcode of failed request:  20 (RRGetCrtcInfo)
  Crtc id in failed request: 0x56e
  Serial number of failed request:  1855
  Current serial number in output stream:  1855
exit status 1

Anything else you feel useful to add?

I use gnome-shell on Wayland, this is why I suppose that ebiten uses xwaylandbridge. Why does it need xorg?

[hajimehoshi]

Ebitengine dropped Wayland support from GLFW.

[gucio321]

Ebitengine dropped Wayland support from GLFW.

So what deos it use for linux-wayland now? maybe I can share some more info?

[hajimehoshi]

IIUC an X emulation layer works.

[gucio321]

interessting, on examples/fullscreen it panics with

[fullscreen (0) ]$ go run .
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x48 pc=0x6d0c86]

goroutine 1 [running, locked to thread]:
github.com/hajimehoshi/ebiten/v2/internal/ui.(*Monitor).DeviceScaleFactor(...)
	/home/me/git/ebiten/internal/ui/monitor_glfw.go:45
github.com/hajimehoshi/ebiten/v2/internal/ui.(*UserInterface).registerWindowFramebufferSizeCallback.func1(0xc00017a608?, 0x280, 0x205)
	/home/me/git/ebiten/internal/ui/ui_glfw.go:968 +0x86
github.com/hajimehoshi/ebiten/v2/internal/glfw.goFramebufferSizeCB(0xc0000061c0?, 0x280, 0x205)
	/home/me/git/ebiten/internal/glfw/window_unix.go:147 +0x45
github.com/hajimehoshi/ebiten/v2/internal/glfw._Cfunc_glfwPollEvents()
	_cgo_gotypes.go:1004 +0x3f
github.com/hajimehoshi/ebiten/v2/internal/glfw.PollEvents()
	/home/me/git/ebiten/internal/glfw/window_unix.go:952 +0xf
github.com/hajimehoshi/ebiten/v2/internal/ui.(*UserInterface).update(0xc00017a608)
	/home/me/git/ebiten/internal/ui/ui_glfw.go:1377 +0x127
github.com/hajimehoshi/ebiten/v2/internal/ui.(*UserInterface).updateGame.func1()
	/home/me/git/ebiten/internal/ui/ui_glfw.go:1471 +0x45
github.com/hajimehoshi/ebiten/v2/internal/thread.(*OSThread).Loop.func1({0xc0001cc300?, 0x80?}, 0x20?)
	/home/me/git/ebiten/internal/thread/thread.go:67 +0x4f
github.com/hajimehoshi/ebiten/v2/internal/thread.(*OSThread).Loop(0xc00021ab00, {0x9632f8, 0xc0009cac30})
	/home/me/git/ebiten/internal/thread/thread.go:68 +0x79
github.com/hajimehoshi/ebiten/v2/internal/ui.(*UserInterface).runMultiThread(0xc00017a608, {0x9654e0, 0xc0000d2380}, 0xc000384dc0)
	/home/me/git/ebiten/internal/ui/run.go:75 +0x322
github.com/hajimehoshi/ebiten/v2/internal/ui.(*UserInterface).Run(0x961518?, {0x9654e0?, 0xc0000d2380?}, 0x3?)
	/home/me/git/ebiten/internal/ui/run.go:33 +0x30
github.com/hajimehoshi/ebiten/v2.RunGameWithOptions({0x961518, 0xc0009b71f8}, 0x0)
	/home/me/git/ebiten/run.go:345 +0x208
github.com/hajimehoshi/ebiten/v2.RunGame(...)
	/home/me/git/ebiten/run.go:236
main.main()
	/home/me/git/ebiten/examples/fullscreen/main.go:117 +0x56
exit status 2

so it uses glfw on wayland.