[linux-audio-dev] ALSA OSS emulation in 2.6 kernel

I'm not entirely sure whether this is the right place to be posting this or not. I've been having some strange issues with the OSS emulation in the 2.6 kernel. With each new kernel release, programs which use OSS have taken progressively longer to start up. Audacity now take about 20 seconds. There is also a 5-10 second delay from the time I hit "play" in Audacity to the time when the playback actually starts. Hydrogen takes a similarly long time to start up if I use OSS output. Finally, if I try to use the OSS MIDI driver for ZynAddSubFX, the entire system locks up - no Ctrl-Alt-Backspace, no Ctrl-Alt-Del, no Magic SysRq. I'm running the 2.6.0-test9 kernel on top of a Slackware 9.0 installation with an M-Audio Audiophile 2496 card. I have everything built into the kernel. The machine is an Athlon XP 1800+ with 256m memory. The output of dmesg after running an OSS application consists of repeated entries which all begin as follows: Debug: sleeping function called from invalid context at include/asm/semaphore.h: 119 in_atomic():1, irqs_disabled():0 Call Trace: [<c011ad4b>] __might_sleep+0xab/0xe0 [<c03727eb>] ap_cs8427_sendbytes+0x3b/0xd0 [<c0367952>] snd_i2c_sendbytes+0x22/0x30 [<c03667b6>] snd_cs8427_reg_write+0x36/0x80 [<c0366e26>] snd_cs8427_reset+0x56/0x240 [<c036763a>] snd_cs8427_iec958_pcm+0xea/0x170 [<c0370b23>] snd_ice1712_playback_pro_hw_params+0x73/0x80 [<c0343507>] snd_pcm_hw_params+0x267/0x2a0 [<c03435d8>] snd_pcm_hw_params_user+0x98/0x100 (followed by various functions, most of which begin with "snd_") I've posted the complete output of dmesg at: http://www.comevisit.com/NorthernSunrise/oss26/dmesg My kernel .config is at: http://www.comevisit.com/NorthernSunrise/oss26/config If there's anything I can do to help track this down, or if there is a better list for me to post this on, please let me know. |) |)enji