#1031655 Lutris: "The wine build you have selected does not support Esync/Fsync"

Package:
wine
Source:
wine
Submitter:
Linus Lüssing
Date:
2025-08-10 16:45:01 UTC
Severity:
normal
#1031655#5
Date:
2023-02-19 20:38:22 UTC
From:
To:
Dear Maintainer,

When I select "System (8.0 (Debian 8.0~repack-4))" in Lutris under a
game's "Runner option" and then trying to select "Enable Esync" or
"Enable Fsync" in that same menu I get the following error message:

  Incompatible Wine version detected
  The Wine build you have selected does not support Esync.
  Please switch to a Esync-capable version.

or:

  Incompatible Wine version detected
  The Wine build you have selected does not support Fsync
  Please switch to a Fsync-capable version.

According to its mouse-over description they are there to increase
multi-threaded performance. They sound like build options to me and work
with the following other runners for me: lutris-mtga-5.0-x86_64 or
lutris-GE-Proton7-35-x86_64.

Would it make sense to somehow enable these options in Debian's wine
version, too? (Or are they non-sense options? I haven't verified their
performance boost claims.)

Regards, Linus


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#1031655#10
Date:
2023-03-06 14:27:42 UTC
From:
To:

Hello Linus,
I tried to have a look how Lutris detects fsync support.

It looks like Lutris extracts the version
from the path the wine executable was found.
(see the is_version_fsync link below)

Unfortunately there is not any version information
from "/usr/bin/wine".

Therefore this does not yet sound like an wine issue.

Kind regards,
Bernhard

https://github.com/lutris/lutris/blob/v0.5.12/lutris/runners/wine.py#L310
https://github.com/lutris/lutris/blob/v0.5.12/lutris/runners/wine.py#L145      #  fsync_support_callback
https://github.com/lutris/lutris/blob/v0.5.12/lutris/util/wine/wine.py#L308    #  is_version_fsync
#1031655#15
Date:
2023-04-09 15:24:51 UTC
From:
To:
control: severity -1 normal
control: reassign -1 src:lutris

Bernhard Übelacker wrote:

Lutris parses version information from "wine --version" to conclude
whether features are supported [0].  The wine in debian outputs
package version detail, which lutris does not currently ignore and
concludes that the version is not in its known good set (i.e. does not
support particular features).

Lutris needs to be updated to ignore the extra package details
returned by the debian wine package.

Best wishes,
Mike

[0] https://github.com/lutris/lutris/blob/v0.5.12/lutris/util/wine/wine.py#L274
#1031655#24
Date:
2023-04-09 15:24:51 UTC
From:
To:
control: severity -1 normal
control: reassign -1 src:lutris

Bernhard Übelacker wrote:

Lutris parses version information from "wine --version" to conclude
whether features are supported [0].  The wine in debian outputs
package version detail, which lutris does not currently ignore and
concludes that the version is not in its known good set (i.e. does not
support particular features).

Lutris needs to be updated to ignore the extra package details
returned by the debian wine package.

Best wishes,
Mike

[0] https://github.com/lutris/lutris/blob/v0.5.12/lutris/util/wine/wine.py#L274
#1031655#29
Date:
2025-08-10 16:42:56 UTC
From:
To:
Fixed upstream in 0.5.14
https://github.com/lutris/lutris/commit/992d421a0ea0587a0906324e450129ad84a6c582