Hello, I have some problems with a ac97 based sound card (Notebook built-in) where the kernel driver works fine (except of not beeing able to resample on-the-fly).
When I set the PCM mixer volume to more then 50%, I hear few sound fragments. If I go over 75% I hear them all the time and on 100% PCM, the sound is full of scratching fragments. You can get an example catched with microphone on http://sites.inka.de/W1752/alsa-distortion.ogg and the original is on www.vorbis.com/music/Mists_of_Time-4T.ogg . First I suspected a speaker problem since it sounds very similar to overloud speaker setting, but it is not! Another problem is more complicated to describe. With programs that use the native ALSA device access, I hear very quiet but annoying crackling/ticking sound every 2-5 seconds. Only hearable with low volume music. When I use programs that work over snd-pcm-oss emulation, the repeating cracling is not there, but it comes every 3-5 minutes in another form: I hear many sound ticks passing in 2-3 seconds, followed by changed sound frequency for 3-5 seconds, then the out normalises again. The hardware part is claimed to be manufactured by Yamaha (AC-XG) but lspci identifies it as: 00:1f.5 Multimedia audio controller: Intel Corp. 82801CA/CAM AC'97 Audio Controller (rev 02) Sharing the IRQ with other onboard components: 11: 3489538 XT-PIC usb-uhci, usb-uhci, eth0, Toshiba America Info Systems ToPIC95 PCI to Cardbus Bridge with ZV Support, Toshiba America Info Systems ToPIC95 PCI to Cardbus Bridge with ZV Support (#2), ohci1394, Intel 82801CA-ICH3 The described problem appears with every ALSA version I can remember (>= 0.9). MfG, Eduard. -- Hab ich mir selber ausgedacht. Für blöde Sprüche brauch ich kein Programm. -- Anita Frieda Reimann ------------------------------------------------------- This SF.net email is sponsored by: SF.net Giveback Program. Does SourceForge.net help you be more productive? Does it help you create better code? SHARE THE LOVE, and help us help YOU! Click Here: http://sourceforge.net/donate/ _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
