[Bug 57534] New: Wine hangs during wineboot --init if Virtual Desktop mode is enabled on a VM with virgl enabled.

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=57534

Bug ID: 57534
           Summary: Wine hangs during wineboot --init if Virtual Desktop
                    mode is enabled on a VM with virgl enabled.
           Product: Wine
           Version: 10.0-rc1
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 77596
  --> https://bugs.winehq.org/attachment.cgi?id=77596
VM spice window after 4-5 minutes post prefix launch.

Creating a fresh wine prefix works, but the second that Virtual Desktop mode is
enabled for the prefix, (Either by winecfg or through manually creating the
needed registry keys.) wine will fail to start the prefix. Only creating the
Wine Desktop window before hanging indefinitely.

During the hang, wineboot.exe --init never exits and killing it has no effect.

The requested application may or may not have a process created for it. If it
does, it's not actually doing anything and killing it has no effect on the
hang.

conhost.exe may or may not exist as well. If it does, killing it is required to
get wine to exit.

After about 4-5 minutes, (on my hardware at least), wine echos to the console
that it failed to load libvulkan.so.1, and the hang continues.

This affects all applications wine tries to start in the prefix including
winecfg. Which means the only way to recover the prefix at that point is to
manually delete the registry keys from user.reg via a text editor. Doing so
restores the prefix to a working state.

Virtual Machine config:

- Proxmox VM,
- 2 Core x86_64-v2 VCPU with AES and XSAVE instructions enabled.
- 4GB RAM
- q35 Chipset, SeaBIOS firmware.
- Display: VirGL GPU (virtio-gl)
- VirtIO RNG
- Serial Port (socket0, SPICE)
- VirtIO SCSI Single Controller
- USB device (usb0) spice
- Audio: ICH9-intel-hda,driver=spice
- Network: VirtIO
- 40GB HDD (scsi0) 32GB HDD (scsi1)
- Linux: Debian 12 Bookworm
- Desktop Manager: XFCE
- Wine version: winehq-devel 10.0-rc1

- Host GPU:
Advanced Micro Devices, Inc. [AMD/ATI] Caicos [Radeon HD 6450/7450/8450 / R5
230 OEM]