[Bug 55597] New: Second desktop slows running Planet of Lana

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=55597

Bug ID: 55597
           Summary: Second desktop slows running Planet of Lana
           Product: Wine
           Version: 8.0.2
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 75129
  --> https://bugs.winehq.org/attachment.cgi?id=75129
Short version of log from running program "Planet of Lana"

A second monitor/desktop, plugged in to my laptop via HDMI, slows down
considerably when running Planet of Lana. The laptop monitor/desktop and the
game itself (windowed) appear to run at a normal speed.

This issue is _not_ observed when running the Steam version of the game (using
Proton 8.0.2).

I am using UbuntuMATE 22.04 (X11/LightDM). I have an on-board and NVIDIA
graphics controller, using the NVIDIA 535.86.05 driver.

lspci | grep VGA
    01:00.0 VGA compatible controller: NVIDIA Corporation TU106M [GeForce RTX
2060 Max-Q] (rev a1)
    05:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Renoir (rev c5)

Logs when running one vs two monitors do not appear materially different, e.g.

# unplug second monitor
    wine Planet\ of\ Lana.exe 1&>2 2>one_monitor.log

# plug second monitor in
    wine Planet\ of\ Lana.exe 1&>2 2>two_monitor.log

# trim log
    sed -r '/semi-stub|stub!/d' one_monitor.log | sed 's/[0-9A-F]{16}/HEX/g'
\
        | sed 's/^[0-9a-fA-F]{4}:/HEX:/g' > one_monitor_trim.log
    sed -r '/semi-stub|stub!/d' two_monitor.log | sed 's/[0-9A-F]{16}/HEX/g'
\
        | sed 's/^[0-9a-fA-F]{4}:/HEX:/g' > two_monitor_trim.log

diff one_monitor_trim.log two_monitor_trim.log
    # no difference

Attached the (trimmed) one-monitor log for reference.

[Bug 55597] Second (or external) monitor/desktop slows running Planet of Lana

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=55597

[e-mail] changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Second desktop slows        |Second (or external)
                   |running Planet of Lana      |monitor/desktop slows
                   |                            |running Planet of Lana

[Bug 55597] Second (or external) monitor/desktop slows running Planet of Lana

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=55597

--- Comment #1 from [e-mail] ---
Looks like this was a case of the incorrect graphics card being used. Running
via:

__NV_PRIME_RENDER_OFFLOAD=1 __GLX_VENDOR_LIBRARY_NAME=nvidia wine Planet\
Of\ Lana.exe

resolved the slowdown on the second display (it seems). I did not need
`__VK_LAYER_NV_optimus=NVIDIA_only` as I don't believe DXVK is used by the
application.

A separate bug, perhaps, but I also tested with `winehg-staging` package
(8.15), and I found that the main laptop screen (regardless of PRIME render
offload settings) would become corrupted when I exited the program. This did
not occur with `winehq-stable` (8.02) so there's a possible regression.