[ubuntu-mono] [Bug 1586665] Re: sysinfo crashes when i click on system menu, ubuntu 16.04

[bkb]

I have exactly same problem.
This is the error message:

sysinfo
Exception in Gtk# callback delegate
  Note: Applications can use GLib.ExceptionManager.UnhandledException to handle the exception.
System.NullReferenceException: Object reference not set to an instance of an object
  at Sysinfo.SystemInfo.Gnome () <0x4046cce0 + 0x000a8> in <filename unknown>:0 
  at Sysinfo.Sysinfo.on_notebook1_switch_page (System.Object o, Gtk.SwitchPageArgs e) <0x40456da0 + 0x0011b> in <filename unknown>:0 
  at Gtk.Notebook.SwitchPageSignalCallback (IntPtr arg0, IntPtr arg1, UInt32 arg2, IntPtr gch) <0x40456580 + 0x002f7> in <filename unknown>:0 
  at GLib.ExceptionManager.RaiseUnhandledException (System.Exception e, Boolean is_terminal) [0x00000] in <filename unknown>:0 
  at Gtk.Notebook.SwitchPageSignalCallback (IntPtr arg0, IntPtr arg1, UInt32 arg2, IntPtr gch) [0x00000] in <filename unknown>:0 
  at Gtk.Notebook.gtk_notebook_set_current_page (IntPtr , Int32 ) [0x00000] in <filename unknown>:0 
  at Gtk.Notebook.set_CurrentPage (Int32 value) [0x00000] in <filename unknown>:0 
  at Sysinfo.Sysinfo.on_treeview1_cursor_changed (System.Object o, System.EventArgs e) [0x00000] in <filename unknown>:0 
  at System.Reflection.MonoMethod.InternalInvoke (System.Reflection.MonoMethod , System.Object , System.Object[] , System.Exception& ) [0x00000] in <filename unknown>:0 
  at System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00000] in <filename unknown>:0 
  at System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) [0x00000] in <filename unknown>:0 
  at System.Delegate.DynamicInvokeImpl (System.Object[] args) [0x00000] in <filename unknown>:0 
  at System.MulticastDelegate.DynamicInvokeImpl (System.Object[] args) [0x00000] in <filename unknown>:0 
  at System.Delegate.DynamicInvoke (System.Object[] args) [0x00000] in <filename unknown>:0 
  at GLib.Signal.ClosureInvokedCB (System.Object o, GLib.ClosureInvokedArgs args) [0x00000] in <filename unknown>:0 
  at GLib.SignalClosure.Invoke (GLib.ClosureInvokedArgs args) [0x00000] in <filename unknown>:0 
  at GLib.SignalClosure.MarshalCallback (IntPtr raw_closure, IntPtr return_val, UInt32 n_param_vals, IntPtr param_values, IntPtr invocation_hint, IntPtr marshal_data) [0x00000] in <filename unknown>:0 
  at Gtk.Application.gtk_main () [0x00000] in <filename unknown>:0 
  at Gtk.Application.Run () [0x00000] in <filename unknown>:0 
  at Sysinfo.Sysinfo..ctor (System.String[] args) [0x00000] in <filename unknown>:0 
  at Sysinfo.Sysinfo.Main (System.String[] args) [0x00000] in <filename unknown>:0

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https://bugs.launchpad.net/bugs/1586665

Title:
  sysinfo crashes when i click on system menu, ubuntu 16.04

Status in sysinfo package in Ubuntu:
  Confirmed

Bug description:
  Linux ubuntu-i7-6700 4.4.0-22-generic #40-Ubuntu SMP Thu May 12
  22:03:46 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

  lspci
  00:00.0 Host bridge: Intel Corporation Sky Lake Host Bridge/DRAM Registers (rev 07)
  00:02.0 VGA compatible controller: Intel Corporation Sky Lake Integrated Graphics (rev 06)
  00:14.0 USB controller: Intel Corporation Sunrise Point-H USB 3.0 xHCI Controller (rev 31)
  00:14.2 Signal processing controller: Intel Corporation Sunrise Point-H Thermal subsystem (rev 31)
  00:16.0 Communication controller: Intel Corporation Sunrise Point-H CSME HECI #1 (rev 31)
  00:17.0 SATA controller: Intel Corporation Sunrise Point-H SATA controller [AHCI mode] (rev 31)
  00:1b.0 PCI bridge: Intel Corporation Sunrise Point-H PCI Root Port #17 (rev f1)
  00:1c.0 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #1 (rev f1)
  00:1c.4 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #5 (rev f1)
  00:1c.5 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #6 (rev f1)
  00:1c.6 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #7 (rev f1)
  00:1d.0 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #9 (rev f1)
  00:1d.4 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #13 (rev f1)
  00:1f.0 ISA bridge: Intel Corporation Sunrise Point-H LPC Controller (rev 31)
  00:1f.2 Memory controller: Intel Corporation Sunrise Point-H PMC (rev 31)
  00:1f.3 Audio device: Intel Corporation Sunrise Point-H HD Audio (rev 31)
  00:1f.4 SMBus: Intel Corporation Sunrise Point-H SMBus (rev 31)
  00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (2) I219-V (rev 31)
  02:00.0 PCI bridge: Intel Corporation DSL6540 Thunderbolt [Alpine Ridge]
  03:00.0 PCI bridge: Intel Corporation DSL6540 Thunderbolt [Alpine Ridge]
  03:01.0 PCI bridge: Intel Corporation DSL6540 Thunderbolt [Alpine Ridge]
  03:02.0 PCI bridge: Intel Corporation DSL6540 Thunderbolt [Alpine Ridge]
  03:04.0 PCI bridge: Intel Corporation DSL6540 Thunderbolt [Alpine Ridge]
  06:00.0 USB controller: Intel Corporation DSL6540 USB 3.1 Controller [Alpine Ridge]
  09:00.0 Ethernet controller: Qualcomm Atheros Killer E220x Gigabit Ethernet Controller (rev 10)
  0a:00.0 Network controller: Qualcomm Atheros AR93xx Wireless Network Adapter (rev 01)

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