You're new to the LinuxSampler world? You don't know where to start and nothing works? Here's the place to ask for help.
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victor
- Newbie
- Posts: 7
- Joined: Sat Feb 20, 2010 2:09 am
Post
by victor » Sun Mar 14, 2010 5:42 am
hello
I can start Qsampler only one time every 4 to 6 attemps; the other times, it says
all the info i could get until now is after typing dmesg
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[ 533.049170] qsampler[3966]: segfault at 16f6448 ip 00007fdc60cbafc8 sp 00007fff46f56dc0 error 4 in libQtGui.so.4.6.2[7fdc605e6000+a4e000]
[ 550.878995] qsampler[3979]: segfault at 7f3c02ae60e8 ip 00007f3ccabe9fc8 sp 00007fff7ec4fb80 error 4 in libQtGui.so.4.6.2[7f3cca515000+a4e000]
[ 665.107963] qsampler[4004]: segfault at 7fb1016f6448 ip 00007fb145519fc8 sp 00007fff57999600 error 4 in libQtGui.so.4.6.2[7fb144e45000+a4e000]
[ 674.752181] qsampler[4010]: segfault at 7fc0f97e02a8 ip 00007fc0fb3fcfc8 sp 00007fff9f4cc730 error 4 in libQtGui.so.4.6.2[7fc0fad28000+a4e000]
this is after several crash following each other; each time Jack is runing with the values of Frames/Periods and Periods/Buffer quite high (512 and 4)
i configured my /etc/security/limits.conf like this
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@audio - rtprio 99
@audio - nice -10
@audio - memlock 500000
(i have 4 Go RAM)
could someone help, please, if possible
thank you!
victor
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victor
- Newbie
- Posts: 7
- Joined: Sat Feb 20, 2010 2:09 am
Post
by victor » Sun Mar 14, 2010 6:26 pm
i've found a solution:
as the error was pointing to the libQtGui, i tried to dowgrade qt-gui (x11-libs/qt-gui as I'm on Gentoo) from 6.2.4 to 5.4.3
now it's working
so i suppose it's really a bug; most of the things i've read about it was a bug; furthermore, qsampler was working every 4 to 8 times i was launching it, without nothing else that had changed; and finally, the 'at', 'ip' and 'sp' numbers, in the dmesg error message are always different, which suggest (if i have understood - i'm a newbie, don't forget it) that the error happens each time at a "different place"
si i guess i have to report it? where to start? i've never done that... qsampler page? qt ?
edit : report done; it has been corrected in one hour; new version without the bug from the svn repository on the web site of Qsampler
thank you
victor