Bug 831418 – media-sound/musescore-3.6.2: freezes the entire desktop - One dependency upgrade should trigger rebuild ?

• Product: Gentoo Linux
• Status: RESOLVED INVALID

[Description Eric F. GARIOUD 2022-01-18 17:29:44 UTC]

Launching musescore-3.6.2

emerged USE="alsa -debug jack mp3 omr -osc portaudio portmidi -pulseaudio sf3 sfz webengine"

Running under linux-5.4.168 / KF 5.88 / Plasma 5.23.4 / X11 / QT 5.15.2

The whole desktop freezes (no possibility to kill whatever / access to whatever / switch back to tty via ctrl+alt+Fx…) when displaying the initial popup enabling to choose amongst existing projects.

Nothing logged in whatever meta-log.

Rebuilding musescore-3.6.2 solves the problem.

Then should some it's dependency upgrade have triggerred musescore's rebuild ?

I immediately thought about qtwebengine since it is used for building the popup, however since my last (successful) usage of musescore, qtwebengine was only upgraded from 5.15.2_p20210224 to 5.15.2_p20211019-r1, so I would think this unlikely.

Since all other dev-qt dependencies only knew what I believe minor upgrades (from 5.15.2 to 5.15.2_p*-r*),

I am left suspecting poppler (since it gets pushed by the omr use flag) which was upgraded from 21.02.0 to 21.11.0

So, should'nt poppler upgrades trigger musescore rebuild when the omr use flag is set ?

Or else ?

Reproducible: Always

[Comment 1 Andreas Sturmlechner 2022-01-21 20:23:03 UTC]

I found no sign of it using private Qt headers nor is poppler[qt5] usually requiring slot change rebuild or manifesting in an issue described as yours.

[Comment 2 Eric F. GARIOUD 2022-01-22 14:56:28 UTC]

(In reply to Andreas Sturmlechner from comment #1)
> I found no sign of it using private Qt headers nor is poppler[qt5] usually
> requiring slot change rebuild or manifesting in an issue described as yours.

Sounds reasonable. Therefore exit poppler

Now, if every explicit dependency cannot reasonably be suspected, I am left with automagic dependencies.

Can I deduce from ldd /usr/bin/musescore report :
…
libicui18n.so.69 => /usr/lib64/libicui18n.so.69 (0x00007fffead90000)
libicuuc.so.69 => /usr/lib64/libicuuc.so.69 (0x00007fffeabad000)
…
that dev-libs/icu is one of them ?

dev-libs/icu went actually upgraded from 68.2 to 69.1-r1 between my last successful use of musescore and the first problematic one.

[Comment 3 Sam James 2022-01-22 15:03:09 UTC]

Use lddtree, not ldd, as it'll indent transitive dependencies.

What about qlop logs from when it broke and latest rebuild?

[Comment 4 Eric F. GARIOUD 2022-02-13 22:16:26 UTC]

I have not been able to reproduce this issue after latest stable poppler / qtwebengine updates.
Closing INVALID, sorry for the noise.