GNU bug report logs - #64663
obs is broken (does not open window)

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: "Dr. Arne Babenhauserheide" <arne_bab <at> web.de>
To: bug-guix <at> gnu.org
Subject: obs is broken (does not open window)
Date: Sun, 16 Jul 2023 12:41:51 +0200

[Message part 1 (text/plain, inline)]

Hi,

a few weeks ago obs (Open Broadcast Studio) stopped working for me.

When I run it, it does not show a window, and pressing C-c does not stop
it (I have to kill it with pkill -9 obs).

Console-output:

info: video settings reset:
        base resolution:   1920x1080
        output resolution: 1280x720
        downscale filter:  Bicubic
        fps:               60/1
        format:            NV12
        YUV mode:          Rec. 709/Partial
info: NV12 texture support not available
info: P010 texture support not available
info: Audio monitoring device:
        name: Standard
        id: default
info: ---------------------------------
warning: Failed to load 'en-US' text for module: 'decklink-captions.so'
warning: Failed to load 'en-US' text for module: 'decklink-output-ui.so'
libDeckLinkAPI.so: Kann die Shared-Object-Datei nicht öffnen: Datei oder Verzeichnis nicht gefunden
warning: A DeckLink iterator could not be created.  The DeckLink drivers may not be installed
warning: Failed to initialize module 'decklink.so'
info: [pipewire] No captures available
warning: v4l2loopback not installed, virtual camera disabled
^Cinfo: ==== Shutting down ==================================================

Best wishes,
Arne
-- 
Unpolitisch sein
heißt politisch sein,
ohne es zu merken.
draketo.de

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Message #8 received at 64663 <at> debbugs.gnu.org (full text, mbox):

From: "Dr. Arne Babenhauserheide" <arne_bab <at> web.de>
To: 64663 <at> debbugs.gnu.org
Subject: bug#64663: obs is broken (does not open window)
Date: Sat, 22 Jul 2023 06:59:22 +0200

[Message part 1 (text/plain, inline)]

This problem was resolved for me with the trick from the thread at
help-guix "OBS Studio memory leak":

Robby Zambito <…> writes:

> Guillaume Le Vaillant <…> writes:
>
>> It looks like an issue with the shader cache of mesa.
>> After clearing it, I don't see the memory leak anymore.
>>
>> Could you try doing a "rm -r $HOME/.cache/mesa_shader_cache/*" and see
>> if it also solves the issue for you?
>
> This worked for me! Thank you!

It also works for me.

Can we somehow automate this solution?

Best wishes,
Arne
-- 
Unpolitisch sein
heißt politisch sein,
ohne es zu merken.
draketo.de

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Message #11 received at 64663 <at> debbugs.gnu.org (full text, mbox):

From: Giovanni Biscuolo <g <at> xelera.eu>
To: "Dr. Arne Babenhauserheide" <arne_bab <at> web.de>, 64663 <at> debbugs.gnu.org
Subject: bug#64663: MESA shader cache makes OBS not running anymore
Date: Tue, 22 Aug 2023 12:13:01 +0200

[Message part 1 (text/plain, inline)]

Hello Arne,

"Dr. Arne Babenhauserheide" <arne_bab <at> web.de> writes:

[...]

>> Guillaume Le Vaillant <…> writes:
>>
>>> It looks like an issue with the shader cache of mesa.
>>> After clearing it, I don't see the memory leak anymore.
>>>
>>> Could you try doing a "rm -r $HOME/.cache/mesa_shader_cache/*" and see
>>> if it also solves the issue for you?

[...]

> Can we somehow automate this solution?

This class of issues (cache invalidation) are recurrent and only
upstream can really solve this... or we should have a post-install
action in guix package manager where we program such invalidations when
upgrading, as a _workaround_ (I guess Debian _is_ doing this, for
example)

The "cache invalidation automation via Guix" discussion is something
that predates https://issues.guix.gnu.org/issue/35683 (May 2019)

The bug you are experiencing is very similar (the same?) reported here:
https://issues.guix.gnu.org/issue/63197

...upstream is still working (?) on the issue:
https://gitlab.freedesktop.org/mesa/mesa/-/issues/8937

All in all this (and all cache invalidation) bug is not Guix specific.

As I already proposed (https://issues.guix.gnu.org/issue/35683):

--8<---------------cut here---------------start------------->8---

we should find a way to make Guix users aware of this kind of problems
and possible workarounds they can apply

--8<---------------cut here---------------end--------------->8---

Best regards, Gio'

-- 
Giovanni Biscuolo

Xelera IT Infrastructures

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