Date: Wed, 17 Jan 2001 22:01:56 GMT From: Michael Robinson <robinson@netrinsics.com> To: freebsd-mobile@freebsd.org Subject: No, I mean *really* reset the DSP Message-ID: <200101172201.f0HM1uP59212@netrinsics.com>
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I have a Dell 5000e running -CURRENT (late December vintage). I can suspend/resume mostly ok (X requires switching to a text console first, or it gets confused). The big problem is that the sound driver doesn't work (no sound at all) after a suspend/resume cycle. From <sys/soundcard.h> I found this ioctl: #define SNDCTL_DSP_RESET _IO ('P', 0) And I wrote this short program: #include <stdio.h> #include <fcntl.h> #include <sys/soundcard.h> main(int argc, char **argv) { int file, err; file = open("/dev/dsp", O_WRONLY); if (file < 0) { perror("file error"); } err = ioctl(file, SNDCTL_DSP_RESET, 0); if (err) { perror("ioctl error"); } } If I run this program after resuming, instead of complete silence, I get nasty static noise from any program that uses audio. So, this has an effect, but it is not restoring the audio to a "freshly booted" state. Short of hacking up the drivers, does anyone have any suggestions? -Michael Robinson To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-mobile" in the body of the message
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