[Alsa-user] Problems with Midiman D1010, Asus A7V, PCI bus master: garbled, jittered sound
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From: Markus H. (LINK999) <hei...@fm...> - 2001-08-09 15:26:03
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Hello, I=B4ve successfully installed the alsa-driver-package (0.5.11) on a = linux 2.4.4 kernel with a Midiman Delta 1010 Soundcard (ice1712, envy24).=20 I can play wav-files without any problems (ecasound -i = some-stereo-file.wav -f:32,10,44100 -o alsa,0,0, you know). But in X11, when playing a file in background and picking up an window = and moving it around very fast the sound gets kind of garbled (not buffer underuns!). It also seems that the "pitch" of the = sound decreases a little bit (slows down). This gets worse with = vgalib-applications (not X11) when I move an slider, for example. I suppose that the problem is a conflict on the pci bus, i.e. although = the graphics card is an AGP-card (Creative GeForce 2MX), it somehow might block the pci bus too long so that the dma-ed samples = to the soundcard get delayed. My box is an AMD-Athlon 1GHz with an ASUS A7V board. By the way, the same problem occurs when accessing the hard disc very = extensively (on the UDMA-PROMISE controller; PCI-bus too.) One more, these are not buffer underuns (ecasound would report that), it = sounds "different". Perhaps someone has observed the same problems and perhaps there=B4s a = solution ? Many thanks for reading and your interest, greetings, Markus |