Emulator

The issue has existed AT LEAST since the commit https://github.com/dolphin-emu/dolphin/commit/64575d565a47e582715aac003d8a0c55cc4ac2ca

Find the commit it started, and then we'll be talking. I'll raise the priority if we know it's a post 4.0 regression.

I've been going back to older and older builds and the issue still seems to persist. I'm starting to think it's a problem with one of the dependencies rather than the program itself, especially since I recently performed an upgrade from Linux Mint 16 to Linux Mint 17.

Anyway, here's a full stack trace with all symbols in place

#0 __strcmp_ssse3 () at ../sysdeps/x86_64/multiarch/../strcmp.S:209
#1 0x00007ffff64e9b1c in SDL_SYS_HapticOpenFromJoystick (haptic=haptic@entry=0x7fffd18ba650, joystick=joystick@entry=0x7fffd1af1fc0)
at /build/buildd/libsdl2-2.0.2+dfsg1/src/haptic/linux/SDL_syshaptic.c:553
#2 0x00007ffff6472207 in SDL_HapticOpenFromJoystick_REAL (joystick=0x7fffd1af1fc0)
at /build/buildd/libsdl2-2.0.2+dfsg1/src/haptic/SDL_haptic.c:315
#3 0x00000000007a089f in ciface::SDL::Joystick::Joystick (this=0x7fffd18e4a40, joystick=0x7fffd1af1fc0, sdl_index=0, index=0)
at /home/matoking/Source/dolphin/Source/Core/InputCommon/ControllerInterface/SDL/SDL.cpp:103
#4 0x00000000007a0616 in ciface::SDL::Init (devices=...)
at /home/matoking/Source/dolphin/Source/Core/InputCommon/ControllerInterface/SDL/SDL.cpp:44
#5 0x000000000079ab40 in ControllerInterface::Initialize (this=0x1272080 <g_controller_interface>)
at /home/matoking/Source/dolphin/Source/Core/InputCommon/ControllerInterface/ControllerInterface.cpp:75
#6 0x000000000064e4a8 in Pad::Initialize (hwnd=0x4a00002 <efb+1805282>) at /home/matoking/Source/dolphin/Source/Core/Core/HW/GCPad.cpp:44
#7 0x00000000005f7cc9 in Core::EmuThread () at /home/matoking/Source/dolphin/Source/Core/Core/Core.cpp:403
#8 0x00000000005fa399 in std::_Bind_simple<void (())()>::_M_invoke<>(std::_Index_tuple<>) (this=0x550b7f0)
at /usr/include/c++/4.8/functional:1732
#9 0x00000000005fa2f3 in std::_Bind_simple<void (())()>::operator()() (this=0x550b7f0) at /usr/include/c++/4.8/functional:1720
#10 0x00000000005fa28c in std::thread::_Impl<std::_Bind_simple<void (*())()> >::_M_run() (this=0x550b7d8) at /usr/include/c++/4.8/thread:115
#11 0x00007ffff3e07bf0 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#12 0x00007ffff3415182 in start_thread (arg=0x7fffe5a91700) at pthread_create.c:312
#13 0x00007ffff3141fbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

I checked the Dolphin wiki on Github and sure enough, there was a note on SDL which should be built and installed manually instead of being installed using a package manager. I also figured out unplugging the controller fixes the issue. :/
I built SDL 2.0.3 from source and installed it, and then rebuilt the emulator, but the emulator still crashes if I have a controller plugged in, so either cmake insists on using the wrong version or there is some other problem.

That said, I recall the emulator working just fine with the same controller before the distro upgrade without having to dabble with SDL.

FIXED.

The latest release version of SDL (2.0.3) had this issue, but downloading and building the latest version from their Mercurial repo fixes this issue.

The relevant bug report is here:
https://bugzilla.libsdl.org/show_bug.cgi?id=2648

Okay, I edited the wiki page ( https://github.com/dolphin-emu/dolphin/wiki/Building-for-Linux ) and added a note regarding the SDL bug. The "build from source" instruction wasn't really clear enough since the bug existed in the latest stable release.

How do we fix this automatically for people using Dolphin? Does our build instructions cover it?

jannepulk, is this issue still occurring in the latest development version? There were some sdl haptic changes made to dolphin recently.