[alsa-devel] Bug in sound-unstable-2.6 ice1724

Takashi Iwai tiwai at suse.de
Mon Oct 20 09:52:54 CEST 2008

At Sun, 19 Oct 2008 11:36:35 +0200,
=?UTF-8?Q?Vedran_Mileti=C4=87?= wrote:
> I have:
> 01:0a.0 Multimedia audio controller: VIA Technologies Inc. VT1720/24
> [Envy24PT/HT] PCI Multi-Channel Audio Controller (rev 01)
> 	Subsystem: TERRATEC Electronic GmbH PHASE 22
> 	Flags: bus master, medium devsel, latency 64, IRQ 16
> 	I/O ports at c880 [size=32]
> 	I/O ports at c800 [size=128]
> 	Capabilities: [80] Power Management version 1
> 	Kernel driver in use: ICE1724
> 	Kernel modules: snd-ice1724
> I do this:
> mplayer -ao alsa:device=hw=1.0 -srate 44100 -format s32le get_video
> Before the song ends, last sample loops for about 20-30 times, and
> then mplayer quits with error:
> alsa-lib: pcm_hw.c:488:(snd_pcm_hw_drain) SNDRV_PCM_IOCTL_DRAIN
> failed: Input/output error
> This doesn't happen on sound-2.6 and doesn't happen on
> sound-unstable-2.6 with E-mu 1212m.

A suspicious commit is the one in topic/test branch,

  commit 442dac7e02a835944bd4d6e429d0b4a2446e0204
  Author: Takashi Iwai <tiwai at suse.de>
  Date:   Tue Aug 12 13:39:02 2008 +0200

    ALSA: Allow drain ioctl for non-blocking mode

Could you try to revert this commit?



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