Like the Mono option. Not liking the continual core dumps.

[Ee]

Seems to happen primarily when I am trying to use eBay.com through Fiddler. I will get regular core dumps with the following stack trace (copied below this message). I am running on Ubuntu 14.04 with the full mono package installed. Am I missing a particular font that Fiddler needs on a particular dialog that it is trying to display?

Thanks much for even giving us Linux folks the option to use this great tool!

--

[xcb] Too much data requested from _XRead
[xcb] This is most likely caused by a broken X extension library
[xcb] Aborting, sorry about that.
mono: ../../src/xcb_io.c:736: _XRead: Assertion `!xcb_xlib_too_much_data_requested' failed.
Stacktrace:

  at <unknown> <0xffffffff>
  at (wrapper managed-to-native) System.Windows.Forms.X11Keyboard.XCreateFontSet (intptr,string,intptr&,int&,intptr) <0xffffffff>
  at System.Windows.Forms.X11Keyboard.CreateOverTheSpotXic (intptr,intptr) <0x000af>
  at System.Windows.Forms.X11Keyboard.CreateXic (intptr,intptr) <0x000d7>
  at System.Windows.Forms.X11Keyboard.CreateXicForWindow (intptr) <0x00037>
  at System.Windows.Forms.X11Keyboard.FocusIn (intptr) <0x00087>
  at System.Windows.Forms.XplatUIX11.SetFocus (intptr) <0x000b3>
  at System.Windows.Forms.XplatUI.SetFocus (intptr) <0x0001f>
  at System.Windows.Forms.ContainerControl.SendControlFocus (System.Windows.Forms.Control) <0x00083>
  at System.Windows.Forms.Form.SetVisibleCore (bool) <0x0071f>
  at System.Windows.Forms.Control.set_Visible (bool) <0x00032>
  at (wrapper remoting-invoke-with-check) System.Windows.Forms.Control.set_Visible (bool) <0xffffffff>
  at System.Windows.Forms.Application.RunLoop (bool,System.Windows.Forms.ApplicationContext) <0x002ef>
  at System.Windows.Forms.Form.ShowDialog (System.Windows.Forms.IWin32Window) <0x008af>
  at (wrapper remoting-invoke-with-check) System.Windows.Forms.Form.ShowDialog (System.Windows.Forms.IWin32Window) <0xffffffff>
  at Fiddler.frmViewer.GetDecision (Fiddler.frmAlert) <0x00037>
  at (wrapper runtime-invoke) <Module>.runtime_invoke_DialogResult__this___object (object,intptr,intptr,intptr) <0xffffffff>
  at <unknown> <0xffffffff>
  at (wrapper managed-to-native) System.Reflection.MonoMethod.InternalInvoke (System.Reflection.MonoMethod,object,object[],System.Exception&) <0xffffffff>
  at System.Reflection.MonoMethod.Invoke (object,System.Reflection.BindingFlags,System.Reflection.Binder,object[],System.Globalization.CultureInfo) <0x000d7>
  at System.Reflection.MethodBase.Invoke (object,object[]) <0x00032>
  at System.Delegate.DynamicInvokeImpl (object[]) <0x00203>
  at System.MulticastDelegate.DynamicInvokeImpl (object[]) <0x0003b>
  at System.Delegate.DynamicInvoke (object[]) <0x00020>
  at System.Windows.Forms.XplatUIDriverSupport.ExecutionCallback (object) <0x0006b>
  at System.Threading.ExecutionContext/<Run>c__AnonStorey0.<>m__0 (object) <0x00055>
  at System.Security.SecurityContext.Run (System.Security.SecurityContext,System.Threading.ContextCallback,object) <0x00113>
  at System.Threading.ExecutionContext.Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object) <0x00237>
  at System.Windows.Forms.XplatUIDriverSupport.ExecuteClientMessage (System.Runtime.InteropServices.GCHandle) <0x000df>
  at System.Windows.Forms.XplatUIX11.GetMessage (object,System.Windows.Forms.MSG&,intptr,int,int) <0x02c8b>
  at System.Windows.Forms.XplatUI.GetMessage (object,System.Windows.Forms.MSG&,intptr,int,int) <0x00047>
  at System.Windows.Forms.Application.RunLoop (bool,System.Windows.Forms.ApplicationContext) <0x00db7>
  at System.Windows.Forms.Application.Run (System.Windows.Forms.ApplicationContext) <0x0005f>
  at System.Windows.Forms.Application.Run (System.Windows.Forms.Form) <0x00033>
  at Fiddler.frmViewer.RunMain (string[]) <0x00493>
  at Fiddler.frmViewer.Main (string[]) <0x00093>
  at (wrapper runtime-invoke) <Module>.runtime_invoke_void_object (object,intptr,intptr,intptr) <0xffffffff>

Native stacktrace:

    mono() [0x4b73d8]
    /lib/x86_64-linux-gnu/libpthread.so.0(+0x10330) [0x7f216fc15330]
    /lib/x86_64-linux-gnu/libc.so.6(gsignal+0x37) [0x7f216f872c37]
    /lib/x86_64-linux-gnu/libc.so.6(abort+0x148) [0x7f216f876028]
    /lib/x86_64-linux-gnu/libc.so.6(+0x2fbf6) [0x7f216f86bbf6]
    /lib/x86_64-linux-gnu/libc.so.6(+0x2fca2) [0x7f216f86bca2]
    /usr/lib/x86_64-linux-gnu/libX11.so.6(_XRead+0xd5) [0x7f216c471925]
    /usr/lib/x86_64-linux-gnu/libX11.so.6(_XRead32+0x24) [0x7f216c4723b4]
    /usr/lib/x86_64-linux-gnu/libX11.so.6(XListFontsWithInfo+0x368) [0x7f216c454fc8]
    /usr/lib/x86_64-linux-gnu/libX11.so.6(+0x7358d) [0x7f216c4a858d]
    /usr/lib/x86_64-linux-gnu/libX11.so.6(XCreateOC+0xeb) [0x7f216c460d4b]
    /usr/lib/x86_64-linux-gnu/libX11.so.6(XCreateFontSet+0x5c) [0x7f216c4559cc]
    [0x410ab69b]

Debug info from gdb:

Could not attach to process.  If your uid matches the uid of the target
process, check the setting of /proc/sys/kernel/yama/ptrace_scope, or try
again as the root user.  For more details, see /etc/sysctl.d/10-ptrace.conf
ptrace: Operation not permitted.
No threads.

=================================================================
Got a SIGABRT while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries
used by your application.
=================================================================

Aborted (core dumped)

[Tsviatko Yovtchev]

Hi,

Mono versions will be going out of support soon. Please, try using Fiddler Orchestra (available in Fiddler 5.0) instead.

Regards,
Tsviatko Yovtchev
Progress Telerik