[Mono-bugs] [Bug 442583] New: Mono crashes when trying to play a sound if there' s no soundcard

[bugzilla_noreply at novell.com]

https://bugzilla.novell.com/show_bug.cgi?id=442583


           Summary: Mono crashes when trying to play a sound if there's no
                    soundcard
           Product: Mono: Class Libraries
           Version: 1.9
          Platform: i686
        OS/Version: Ubuntu
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: System
        AssignedTo: mono-bugs at lists.ximian.com
        ReportedBy: floseflose at gmail.com
         QAContact: mono-bugs at lists.ximian.com
          Found By: Other


Description of Problem:
Mono crashes when trying to play a sound if there's no soundcard.
A try block around the play command doesn't prevent the crash.

Steps to reproduce the problem:
1. Use a virtual PC without a soundcard and a Ubuntu 8.10 live CD
2. Write a program which uses:
  System.Media.SystemSounds.Exclamation.Play();


Actual Results:
crashes when trying to play the sound(stacktrace see bottom)

Expected Results:
doing nothing(because there's no soundcard)

How often does this happen? 
always

Additional Information:

ALSA lib pcm_pulse.c:629:(pulse_prepare) PulseAudio: Unable to create stream:
Invalid argument

ALSA lib pcm.c:7307:(snd_pcm_set_params) Unable to set hw params for PLAYBACK:
Input/output error
mono: pcm_pulse.c:364: pulse_write: Assertion `pcm->stream' failed.
Stacktrace:

  at (wrapper managed-to-native) Mono.Audio.AlsaDevice.snd_pcm_writei
(intptr,byte[],int) <0x00004>
  at (wrapper managed-to-native) Mono.Audio.AlsaDevice.snd_pcm_writei
(intptr,byte[],int) <0xffffffff>
  at Mono.Audio.AlsaDevice.PlaySample (byte[],int) <0x00016>
  at Mono.Audio.WavData.Play (Mono.Audio.AudioDevice) <0x0005d>
  at System.Media.SoundPlayer.PlaySync () <0x000d9>
  at (wrapper runtime-invoke) System.Object.runtime_invoke_void
(object,intptr,intptr,intptr) <0xffffffff>

Native stacktrace:

        mono [0x817b4ae]
        [0xb7fdc410]
        /lib/tls/i686/cmov/libc.so.6(abort+0x188) [0xb7d78248]
        /lib/tls/i686/cmov/libc.so.6(__assert_fail+0xee) [0xb7d6f72e]
        /usr/lib/alsa-lib/libasound_module_pcm_pulse.so [0xb6674e33]
        /usr/lib/libasound.so.2 [0xb5c22201]
        /usr/lib/libasound.so.2 [0xb5bddee9]
        /usr/lib/libasound.so.2 [0xb5c22605]
        /usr/lib/libasound.so.2(snd_pcm_writei+0x54) [0xb5bd87e4]
        [0xb5d615fd]
        [0xb5d615a7]
        [0xb5d61516]
        [0xb5d5ff02]
        [0xb6102b39]


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