At Tue, 29 Aug 2006 14:19:41 +0100, Daniel James wrote: > > Hello all, > > Here's a strange problem that's affecting at least three different > machines running Debian, or in our case, the 64 Studio distro made up of > Debian packages: > > http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=377915 > > This bug is not related to qjackctl, as first thought. Here are the > steps to reproduce it: > > 1. Start jack on the command line at 44100Hz using the alsa backend > > 2. Start any jack application and see the sample rate reported as 48000Hz > > In fact it doesn't matter which rate you try to start jack at, the > sample rate is always reported as 48000Hz. This bug only happens with > the alsa backend, the oss and dummy backends work as normal. OSS does software sample rate conversion as default. > The problem has been observed on three different AC97 soundcards, > running various kernels from 2.6.16 to 2.6.17. The alsa-base version is > 1.0.11-5. However one machine with an AC97 on-board sound chipset, > running Debian unstable, does not show the problem. Also, all these > machines were working fine with ALSA and jack until recently. > > Any clues would be greatly appreciated. A machine is available on-line > for testing if that is required - if you would like to log in to it, > please let me know and I'll send you the IP address and login. My wild guess is that your ac97 codec chip really supports only 48kHz. For example, C-Media codecs do so. Check your /proc/asound/card0/codec97#0/ac97#0-0 file, whether it contains "VRA" in Extended ID section. If not, it's 48k-only codec. Takashi ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-devel
