<html><body>
<p><tt>-----Andrew Junev: -----<br>
</tt><tt>>Hello All,<br>
</tt><tt>><br>
</tt><tt>>I was using MythTV with two DVB-S tuners for quite some time now.<br>
</tt><tt>>Today I tried to scan for new channels and ... it didn't work. I ran<br>
</tt><tt>>mythtvsetup, went to Channel Editor, selected Transponder Scan<br>
</tt><tt>>(tuned), put the data of a transponder and then clicked Next - the<br>
</tt><tt>>mythtvsetup window just closed. In the terminal output I see the<br>
</tt><tt>>following error:<br>
</tt><tt>><br>
</tt><tt>>Connected to database 'mythconverg' at host: localhost<br>
</tt><tt>>mythtvsetup: xcb_lock.c:77: _XGetXCBBuffer: Assertion `((int)<br>
</tt><tt>>((xcb_req) - (dpy->request)) >= 0)' failed.<br>
</tt><tt>>Aborted<br>
</tt><tt>><br>
</tt><tt>><br>
</tt><tt>>I tried it with different transponders, different tuners - all the<br>
</tt><tt>>time it was the same. Here's some info about my system:<br>
</tt><tt>><br>
</tt><tt>># uname -a<br>
</tt><tt>>Linux mythbackend 2.6.26.6-49.fc8 #1 SMP Fri Oct 17 15:59:36 EDT 2008<br>
</tt><tt>>i686 i686 i386 GNU/Linux<br>
</tt><tt>># mythbackend --version<br>
</tt><tt>>Please include all output in bug reports.<br>
</tt><tt>>MythTV Version : 18753M<br>
</tt><tt>>MythTV Branch : branches/release-0-21-fixes<br>
</tt><tt>>Library API : 0.21.20080304-1<br>
</tt><tt>>Network Protocol : 40<br>
</tt><tt>>Options compiled in:<br>
</tt><tt>> linux release using_oss using_alsa using_arts using_jack<br>
</tt><tt>>using_backend using_dbox2 using_dvb using_firewire using_frontend<br>
</tt><tt>>using_hdhomerun using_iptv using_ivtv using_joystick_menu<br>
</tt><tt>>using_libfftw3 using_lirc using_opengl_vsync using_opengl_video<br>
</tt><tt>>using_v4l using_x11 using_xrandr using_xv using_xvmc using_xvmcw<br>
</tt><tt>>using_xvmc_vld using_glx_proc_addr_arb using_bindings_perl<br>
</tt><tt>>using_bindings_python using_opengl using_ffmpeg_threads<br>
</tt><tt>>using_libavc_5_3 using_live<br>
</tt><tt>><br>
</tt><tt>><br>
</tt><tt>>I seem to have the latest mythtv version availble in the<br>
</tt><tt>>repositories.<br>
</tt><tt>>Any ideas on what the problem might be?<br>
</tt><tt>><br>
</tt><tt>>--<br>
</tt><tt>>Best regards,<br>
</tt><tt>> Andrew<br>
</tt><br>
<tt>What kind of CPU are you running this on?<br>
</tt><tt>There is an issue with mythtvsetup and hyperthreaded or multi-core CPUs.<br>
</tt><tt>If you have one of these try running mythtvsetup like this: taskset -c0 mythtvsetup.</tt><br>
<br>
<tt>Jens</tt></body></html>