Windows 11, Long OpenSCAD start-up time?
Is there a known issue with recent builds and Windows 11?
I just installed OpenSCAD in Windows 11 for the first time.
OpenSCAD Nightly version 2025.08.31 (git f0e3acd24)
When starting it takes ~20s to paint the editor/preview/console window.
ie the Window box with title shows straight away, but with blank contents.
During which '(Not Responding)' is shown on the title bar with a blue spinner cursor.
If the 'welcome screen' option is set, the welcome screen displays quickly,
but then doing anything shows the above behaviour.
2021.01 starts up promptly.
I bought a new PC in part because of slow OpenSCAD startup times. I
have no idea why it needs to take so long, but that was the only
solution I could find.
Jon
On 9/2/2025 5:09 AM, Michael Marx (spintel) via Discuss wrote:
Is there a known issue with recent builds and Windows 11?
I just installed OpenSCAD in Windows 11 for the first time.
OpenSCAD Nightly version 2025.08.31 (git f0e3acd24)
When starting it takes ~20s to paint the editor/preview/console window.
ie the Window box with title shows straight away, but with blank contents.
During which '(Not Responding)' is shown on the title bar with a blue
spinner cursor.
If the 'welcome screen' option is set, the welcome screen displays
quickly,
but then doing anything shows the above behaviour.
2021.01 starts up promptly.
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Sounds like OpenGL related issue...
What is the status of MSVC build? I think we need someone to use MSVC to
build the binary and do profiling on it.
On 9/2/25 18:55, Jon Bondy via Discuss wrote:
I bought a new PC in part because of slow OpenSCAD startup times. I
have no idea why it needs to take so long, but that was the only
solution I could find.
Jon
On 9/2/2025 5:09 AM, Michael Marx (spintel) via Discuss wrote:
Is there a known issue with recent builds and Windows 11?
I just installed OpenSCAD in Windows 11 for the first time.
OpenSCAD Nightly version 2025.08.31 (git f0e3acd24)
When starting it takes ~20s to paint the editor/preview/console window.
ie the Window box with title shows straight away, but with blank
contents.
During which '(Not Responding)' is shown on the title bar with a blue
spinner cursor.
If the 'welcome screen' option is set, the welcome screen displays
quickly,
but then doing anything shows the above behaviour.
2021.01 starts up promptly.
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To unsubscribe send an email todiscuss-leave@lists.openscad.org
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On 02.09.25 16:08, pca006132 via Discuss wrote:
What is the status of MSVC build? I think we need someone to use MSVC to
build the binary and do profiling on it.
Not 100% finished, but here's a current status:
https://github.com/openscad/openscad/issues/6123
Otherwise, make sure remote 3d printing services are disabled.
(Disabled is the default)
Preferences -> 3D Print -> General -> "Enable remote print services"
ciao,
Torsten.
On 9/2/2025 2:09 AM, Michael Marx (spintel) via Discuss wrote:
Is there a known issue with recent builds and Windows 11?
It's known. I believe Torsten understands what's causing it, if perhaps
not why.
I don't immediately see an issue filed.
On 02.09.25 16:18, Jordan Brown via Discuss wrote:
It's known. I believe Torsten understands what's causing it,
if perhaps not why.
I thought it's related to the GUI font configuration, but I
have seen other reports that cast some doubt on that.
ciao,
Torsten.
I'm happy to be the guinea pig on this.
Library info attached.
It was a new OpenSCAD install today (W11 new'ish - some weeks), so defaults mostly.
The first run, hence defaults, seemed painfully slow, I presumed it was doing first run configuration overheads.
But later ones also slow.
Confirmed Remote Print Services are disabled.
I'll raise an issue tomorrow (00:32hrs now)...
-----Original Message-----
From: Torsten Paul via Discuss [mailto:discuss@lists.openscad.org]
Sent: Wednesday, September 03, 2025 12:21 AM
To: discuss@lists.openscad.org
Cc: Torsten Paul
Subject: [OpenSCAD] Re: Windows 11, Long OpenSCAD start-up time?
On 02.09.25 16:18, Jordan Brown via Discuss wrote:
It's known. I believe Torsten understands what's causing it,
if perhaps not why.
I thought it's related to the GUI font configuration, but I
have seen other reports that cast some doubt on that.
ciao,
Torsten.
OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org
For me it looks like, the culprit is here:
https://github.com/openscad/openscad/blob/master/src/gui/Preferences.cc#L747
Only in windows builds emitting this signal takes 7 seconds.
Remarkably enough, I cannot find where this signal is connected to, so can
we skip sleeping 7 seconds here ?
If yes, look forward to reusing that fix.
On Tue, Sep 2, 2025 at 4:36 PM Michael Marx (spintel) via Discuss <
discuss@lists.openscad.org> wrote:
I'm happy to be the guinea pig on this.
Library info attached.
It was a new OpenSCAD install today (W11 new'ish - some weeks), so
defaults mostly.
The first run, hence defaults, seemed painfully slow, I presumed it was
doing first run configuration overheads.
But later ones also slow.
Confirmed Remote Print Services are disabled.
I'll raise an issue tomorrow (00:32hrs now)...
-----Original Message-----
From: Torsten Paul via Discuss [mailto:discuss@lists.openscad.org]
Sent: Wednesday, September 03, 2025 12:21 AM
To: discuss@lists.openscad.org
Cc: Torsten Paul
Subject: [OpenSCAD] Re: Windows 11, Long OpenSCAD start-up time?
On 02.09.25 16:18, Jordan Brown via Discuss wrote:
It's known. I believe Torsten understands what's causing it,
if perhaps not why.
I thought it's related to the GUI font configuration, but I
have seen other reports that cast some doubt on that.
ciao,
Torsten.
OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org
OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org