Hi all,
Have been encountering, only on one machine, a random crashing issue of the Matlab apparently caused by the Psychtoolbox portaudio. I have contacted Mathworks and they pointed me here.
The crash is a Matlab-type violation error and displays a window that terminates Matlab, not all the time, but occasionally without any warning.
Matlab version R2015a is being
used on all the machines for this script, but this is the only machine
(of about 8) that crashed in this manner. Of these machines, 5 are
exactly the same type and spec.
MATLAB crash file:C:\Users\CRCHEA~1\AppData\Local\Temp\matlab_crash_dump.3260-1:
------------------------------------------------------------------------
Access violation detected at Sat Oct 17 16:05:28 2015
------------------------------------------------------------------------
Configuration:
Crash Decoding : Disabled
Crash Mode : continue (default)
Current Graphics Driver: Intel Intel(R) HD Graphics 4600 Version 4.2.0 - Build 10.18.10.3412
Default Encoding : windows-1252
Graphics card 1 : Intel Corporation ( 0x8086 ) Intel(R) HD Graphics 4600 Version 10.18.10.3412
Host Name : MU00059493
MATLAB Architecture : win64
MATLAB Root : C:\Program Files\MATLAB\R2015a
MATLAB Version : 8.5.0.197613 (R2015a)
OpenGL : hardware
Operating System : Microsoft Windows 7 Enterprise
Processor ID : x86 Family 6 Model 60 Stepping 3, GenuineIntel
Virtual Machine : Java 1.7.0_60-b19 with Oracle Corporation Java HotSpot(TM) 64-Bit Server VM mixed mode
Window System : Version 6.1 (Build 7601: Service Pack 1)
Fault Count: 1
Abnormal termination:
Access violation
Register State (from fault):
RAX = 0000000000000000 RBX = 00000000a58240d0
RCX = 0000000000000020 RDX = 0000000000000000
RSP = 00000001d553fda0 RBP = 0000000000000000
RSI = 0000000000000020 RDI = 000007fef02ab840
R8 = 00000000a58240d0 R9 = 0000000000000000
R10 = 0000000000000000 R11 = 0000000000000202
R12 = 0000000000000000 R13 = 0000000000000000
R14 = 0000000000000000 R15 = 000007fefa35ed00
RIP = 000007fef02ab851 EFL = 00010206
CS = 0033 FS = 0053 GS = 002b
Stack Trace (from fault):
[ 0] 0x000007fef02ab851 C:\toolbox\Psychtoolbox\PsychSound\portaudio_x64.dll+00047185 PaAsio_GetOutputChannelName+00012753
[ 1] 0x000007fefa332dde C:\Windows\system32\WINMM.dll+00011742 DriverCallback+00000110
[ 2] 0x000007fefa33a95d C:\Windows\system32\WINMM.dll+00043357 timeEndPeriod+00000501
[ 3] 0x00000000778559dd C:\Windows\system32\kernel32.dll+00088541 BaseThreadInitThunk+00000013
[ 4] 0x0000000077a8a651 C:\Windows\SYSTEM32\ntdll.dll+00173649 RtlUserThreadStart+00000033
--------------------------------
The Matlab Support Team checked the Stack Trace above and saw the portaudio_x64.dll driver mentioned.
--------------------------------- CODE START -----------------------------
The code wrt to the setup of portaudio that is being used is:
%% SOUND STUFF
%% Psychportaudio
wave=sin(1:0.25:1000);
freq=22254; % change this to change freq of tone
nrchannels = size(wave,1);
% Initialize driver, request low-latency preinit:
InitializePsychSound(1)
%
% Default to auto-selected default output device:
%find device index name 'Primary Sound Driver'
devices = PsychPortAudio('GetDevices')
size_devices = size(devices);
devicetarget = 'Speakers / Headphones (Realtek High Definition Audio)';
iLoop = 1;
while iLoop < size_devices(2)
%%possible use strfind for different search string or partial string
if strcmp(devices(iLoop).DeviceName, devicetarget)
break;
end
iLoop = iLoop + 1;
end
iLoop
devices(iLoop)
deviceid = devices(iLoop).DeviceIndex
%deviceid = 15
%OLD
%deviceid = -1; %DEFAULT
%%deviceid = 2; %No Roland Connected
%<<
%
% Request latency mode 2, which used to be the best one in our measurement:
reqlatencyclass = 2; % class 2 empirically the best, 3 & 4 == 2
% Open audio device for low-latency output:
%pahandle = PsychPortAudio('Open' [, deviceid][, mode][, reqlatencyclass][, freq][, channels][, buffersize][, suggestedLatency][, selectchannels][, specialFlags=0]);
pahandle = PsychPortAudio('Open', deviceid, [], reqlatencyclass, freq, nrchannels)
%END Setup
------------------------------------
I would be interested to know if others have had similar things working with the Psychtoolbox and ways to get around this random issue.
Cheers,
DaveB