Bug 2212225

Summary:	PCem crashed when launch a VM on Wayland.
Product:	[Fedora] Fedora	Reporter:	Egor Gavrilov <gavrilovegor519+fedora>
Component:	pcem	Assignee:	Davide Cavalca <davide>
Status:	NEW ---	QA Contact:
Severity:	urgent	Docs Contact:
Priority:	unspecified
Version:	38	CC:	davide
Target Milestone:	---	Keywords:	Desktop
Target Release:	---
Hardware:	x86_64
OS:	Linux
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2170952

Description Egor Gavrilov 2023-06-04 21:19:31 UTC

When starting the PCem virtual machine using the Wayland session, PCem stupidly crashes.

Reproducible: Always

Steps to Reproduce:
1. Create emulated VM on PCem.
2. Launch it.
3. Crash!
Actual Results:  
Emulated VM is crashed.

Expected Results:  
Emulated VM is normal starting and working.

Comment 1 Davide Cavalca 2023-06-26 07:47:16 UTC

I can't repro this on my end, can you share a bit more about your setup?

Comment 2 Egor Gavrilov 2023-06-26 08:17:45 UTC

(In reply to Davide Cavalca from comment #1)
> I can't repro this on my end, can you share a bit more about your setup?

CPU: Ryzen 3 4300U.
RAM: 8 GB DDR4 3200 MHz.
GPU: Radeon iGPU.
Fedora version: 38.
Graphic protocol: Wayland.
DE: GNOME 44.
Secure Boot: disabled.
TPM 2.0: enabled.
Boot method: UEFI.

Comment 3 Davide Cavalca 2023-06-27 09:01:32 UTC

Ok I managed to get this to repro when booting a 486 VM with S3 video. This looks the same as https://bugzilla.redhat.com/show_bug.cgi?id=2170952 and it boils down to pcem not really supporting wayland. There's some discussion upstream in https://github.com/sarah-walker-pcem/pcem/issues/128 for a related issue. I will push an updated to build forcing pcem to x11 for the time being, in the meantime you can workaround this by setting the SDL_VIDEODRIVER=x11 and GDK_BACKEND=x11 environment variables before running pcem.