On Tue, 5 Feb 2008 20:15:23 +0100 Grzegorz Chwesewicz <[EMAIL PROTECTED]> wrote:
> Hi. > Problem description: > > I have a problem with recording on HP nx6325 notebook (hda-intel with > AD1981HD > codec). Playback works fine, but after 5-10 min. of recording microphone > stops working (playback works all the time). Unloading and loading sound > modules fixes problem, but only for another 5-10 minutes. This problem exists > from more than a year (at least from 2.6.17.13 kernel). In [1] we came to > conclusion that this problem is ralated to IRQ sharing [2] (HDA Intel is on > the same IRQ as sata_sil). > > How to reproduce the problem: > > 1) on one console run arecord and see the output (You should see some garbage) > 2) on another console run cat /etc/* > 3) at once arecord on the first console gives no output > > So, doing lot of hdd I/O occurs problem with mic. > > What had been done: > > 1) I tried to boot Fedora 8 livecd and unload sata_sil, so that hda_intel was > the only device using IRQ. After that microphone was working all the time (I > left recording for all night, and in the morning I had almost 2h voip chat > using Twinkle). So when sata_sil is unloaded, and hda-intel is not sharing > the IRQ, the mic. is working all the time. Look at [3] to > see /proc/interrupts output when laptop is booted from livecd, and mic works. > > 2) I tried to load hda-intel with enable_msi=1 (my RS480 chip is on > blacklist, > but I've removed it). Module loads and playback works ok, but problem with > mic still exists. Difference here is that when recording stops to work the > playback also stops to work (without MSI only mic stops to work). Look at [4] > to see /proc/interrupts output when module is loaded with enable_msi=1. > > Question: > > What information I need to provide to help resolving the problem ? Where to > start, because I've run out of ideas :) ? > > References: > [1] https://bugtrack.alsa-project.org/alsa-bug/view.php?id=2449 Recording the bug in the alsa bugtracker is good, and Takashi is actively working on the bug, and he is the best guy to do that. So I don't think anything else really needs to be done here - please work with him on solving this? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
