Bug 614309

Summary: [abrt] crash in lmms-0.4.6-2.fc12: QMetaObject::removeGuard: Process /usr/bin/lmms was killed by signal 11 (SIGSEGV)
Product: [Fedora] Fedora Reporter: Stian Ellingsen <stiell>
Component: lmmsAssignee: Thomas Moschny <thomas.moschny>
Status: CLOSED DUPLICATE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: low    
Version: 12CC: thomas.moschny
Target Milestone: ---   
Target Release: ---   
Hardware: i686   
OS: Linux   
Whiteboard: abrt_hash:633300443f03d246c8e9119642de5986aed7aecb
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2010-07-14 06:30:13 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description Flags
File: backtrace none

Description Stian Ellingsen 2010-07-14 05:50:25 UTC 
abrt 1.1.1 detected a crash.

architecture: i686
Attached file: backtrace
cmdline: lmms
component: lmms
crash_function: QMetaObject::removeGuard
executable: /usr/bin/lmms
global_uuid: 633300443f03d246c8e9119642de5986aed7aecb
kernel: 2.6.32.14-127.fc12.i686.PAE
package: lmms-0.4.6-2.fc12
rating: 4
reason: Process /usr/bin/lmms was killed by signal 11 (SIGSEGV)
release: Fedora release 12 (Constantine)

comment
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LMMS seems to crash randomly while playing instruments, especially when using the GUI keyboard.

Configuring LMMS to use ALSA with the default device (which routes to PulseAudio) seems to make the program crash faster than with ALSA hw:0,0 or direct PulseAudio.

How to reproduce
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1. On startup, open the instrument settings for the "Default preset" track.
2. Using the mouse, click and hold on a key on the keyboard that just appeared.
3. Drag the mouse fast left and right for a while, so that the instrument continuously plays different notes.
4. After a while, the UI freezes for a short moment and then disappears.
Comment 1 Stian Ellingsen 2010-07-14 05:50:28 UTC 
Created attachment 431669 [details]
File: backtrace
Comment 2 Stian Ellingsen 2010-07-14 06:30:13 UTC 
Looks like this is the same as bug 591591.

*** This bug has been marked as a duplicate of bug 591591 ***