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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Hello All,</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have a pythno3 app that uses PyGobject to create a button.</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I can reproduce a segfault by using a stylus to press and drag across that button.</p>
<p class="MsoNormal">When I use my finger, no segfault.</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">When programmed to do nothing, I can see that the button flickers; indicating intermittent contact and multiple press/releases events.</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The partial core dump I get is below:</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Core was generated by `python3.8 ./GrooveGloveUI.py'.</p>
<p class="MsoNormal">Program terminated with signal SIGSEGV, Segmentation fault.</p>
<p class="MsoNormal">#0 <b>wl_proxy_get_user_data (proxy=0x0) at ../wayland-1.18.0/src/wayland-client.c:2040<o:p></o:p></b></p>
<p class="MsoNormal">2040 return proxy->user_data;</p>
<p class="MsoNormal">[Current thread is 1 (Thread 0xffffa2609c60 (LWP 858))]</p>
<p class="MsoNormal">(gdb) bt</p>
<p class="MsoNormal">#0 wl_proxy_get_user_data (proxy=0x0) at ../wayland-1.18.0/src/wayland-client.c:2040</p>
<p class="MsoNormal">#1 0x0000ffff9f332a78 in () at /usr/lib/libgdk-3.so.0</p>
<p class="MsoNormal">#2 0x0000ffffa1847008 in ffi_call_SYSV () at ../libffi-3.3/src/aarch64/sysv.S:114</p>
<p class="MsoNormal">#3 0x0000ffffa1846710 in ffi_call_int (cif=cif@entry=0xfffff21ab908, fn=0x0, orig_rvalue=0xfffff21ab9d8, orig_rvalue@entry=0x0, avalue=avalue@entry=0xfffff21ab9d8, closure=0xffff9f3396d0, closure@entry=0x0) at ../libffi-3.3/src/aarch64/ffi.c:747</p>
<p class="MsoNormal">#4 0x0000ffffa1846bb8 in ffi_call (cif=cif@entry=0xfffff21ab908, fn=<optimized out>, rvalue=rvalue@entry=0x0, avalue=avalue@entry=0xfffff21ab9d8) at ../libffi-3.3/src/aarch64/ffi.c:756</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I believe this is indicating that proxy is null.</p>
<p class="MsoNormal">If so, I believe the problem could be exposed by over-sensitivity in the touch controller and have contacted the panel maker.</p>
<p class="MsoNormal">Where would I start to look to find out why proxy is null or prevent such a call if the proxy is null (if my assessment is correct)?</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">-dwd</p>
<p class="MsoNormal">
<b><span style="color:red">David Deyo</span><o:p></o:p></b></p>
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<p class="MsoNormal"><img width="170" height="82" style="width:1.7708in;height:.8541in" id="Picture_x0020_3" src="cid:image003.png@01D7AB9E.F7F68630"><span style="font-size:1.0pt;font-family:"Times New Roman",serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:1.0pt;font-family:"Times New Roman",serif"> </span><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#F52D00;text-transform:uppercase"><o:p></o:p></span></b></p>
<p class="MsoNormal" style="line-height:10.5pt"><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#121145">Firmware Engineer
<o:p></o:p></span></b></p>
<p class="MsoNormal" style="line-height:10.5pt"><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#F52D00;text-transform:uppercase">TPI- Tire Profiles<o:p></o:p></span></b></p>
<p class="MsoNormal" style="line-height:10.5pt"><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#F52D00">O:
</span></b><span style="font-size:9.0pt;font-family:"Arial",sans-serif">214-396-3063<o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:10.5pt"><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#F52D00">E:</span></b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#121145">
</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif"><a href="mailto:ddeyo@tireprofiles.com">ddeyo@tireprofiles.com</a></span><span style="font-size:9.0pt;color:#121145">
</span><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#F52D00">| W:
</span></b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#121145"> </span><a href="http://www.tireprofiles.com/" target="_blank"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#0563C1">www.tireprofiles.com</span></a><span style="font-size:9.0pt"><o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:10.5pt"><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#F52D00">A:</span></b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#121145"> 3010 Story Rd W, Irving, TX 75038</span><o:p></o:p></p>
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