Hello, I'm trying to get sound to work reliably on an HP TouchSmart IQ816. Here are the particulars: Linux 2.6.24.3 (SLAX, derived from Slackware) Alsa 1.0.18 lspci: 00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 04) Controller: AD1984B Booting with irqpoll, because without it, video drivers do not work Symptom 1: No sound out the speakers, but line-out works Workaround: Using model=mobile or model=laptop, sound comes out the speaker but not the line-out (I can live with this, but I'd be happy to work with the developers to find a solution where both speakers AND line-out work) Symptom 2: Message in the log telling me to set bdl_pos_adj Workaround: Using bdl_pos_adj=32 the message went away Symptom 3: Network stops working after a little while Workaround: Using enable_msi=1 seems to have resolved this (which is odd, because everything I read on the web made me think that "disable_msi=1" would solve it) Symptom 4: The first audio file I play sounds great, but by the second or third thing I play, the sound gets a lot of high-frequency noise in it, making it sound "tinny" like an over-driven 1-inch speaker. Once this condition starts, unloading/reloading the snd_hda_intel module does not fix the problem. However, the problem does spontaneously go away sometimes, and then spontaneously comes back. I can quite reliably reproduce the problem using a Java program to create the sound, but I cannot reproduce it using aplay. (Although if the sound becomes tinny after playing a couple sounds from java, then aplay will be tinny as well). My best guess is that this is really caused by the OSS compatibility modules. If I rig my Java program to use ALSA for audio instead of the "Java Sound" mixer (which seems to rely on OSS), the problem does not occur. However, if I just modprobe -r away all the OSS modules, then some Java APIs stop working because they only work with OSS. I'm going to see how hard it would be to rework our application to never use the Java APIs that use OSS, but if there is a better solution I'd love to hear it! Thanks. -Joshua ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
