At Tue, 15 Aug 2006 15:34:38 +0930 (CST),
Jonathan Woithe wrote:
>
> > > Which upload option?
> > Not upload, unload option. I need the unload module option in the kernel.
>
> Ah. Sorry, I should read things more clearly before I respond.
>
> > Without it rmmod do not work.
>
> Correct.
>
> > > > > 3) try
> > > > > modprobe snd-hda-intel model=acer
> > > > Have worked
> > > > > With a bit of luck this won't give any errors. Use alsamixer and
> > > > > aplay (for example) to test sound and see if you get any joy.
> > > >
> > > > I get a mistake when I try to start alsamixer -> alsamixer: function
> > > > snd_ctl_open failed for default: No such device
> > >
> > > Hmm, that would imply that the sound driver didn't find any suitable
> > > hardware. Perhaps try this again and post the last few lines of a
> > > dmesg command run immediately after the modprobe. This should tell us
> > > what the snd-hda-intel found and what it did.
> >
> > When i look into modprobe before i modprobe the driver and modprobe him
> > after that i can see 3 new messages:
> > #modprobe snd-hda-intel model=acer
> > ACPI: PCI Interrupt 0000:00:1b.0[A] -> Link [LNKA] -> GSI 10 (level, low) ->
> > IRQ 10
> > PCI: Setting latency timer of device 0000:00:1b.0 to 64
> > ALSA
> > /var/tmp/portage/alsa-driver-1.0.12_rc1-r1/work/alsa-driver-1.0.12rc1/pci/hd
> > a/../../alsa-kernel/pci/hda/hda_intel.c:525: hda_intel: azx_get_response
> > timeout, switching to single_cmd mode...
>
> Right. The first two appear consistent with what I see. However, I only
> ever see "azx_get_response timeout" messages sporadically and for me they
> don't seem to cause a problem. However ...
>
> > > In another earlier post you also mentioned seeing timeout messages
> > > in the dmesg output; do you get these all the time, or just sporadically?
> >
> > They are always comming when i start alsa (you see that in the message
> > above)
>
> That doesn't seem right. On the basis of these tests it would appear that
> Takashi's suggestion of there being a communication problem with the codec
> seems likely. That would also explain why nothing sound-related appears to
> be working. FYI the HDA architecture consists of the HDA interface itself
> and an attached codec chip. The above message could be indicating that
> while the HDA controller (for want of a better word) is found, the codec
> chip isn't responding or isn't repsonding properly. It is the codec chip
> which is responsible for the A-D and D-A conversions.
Exactly.
Lubomir, could you try the patch below? The driver will switch to
polling mode if the irq mode seems not working. You'll see first a
warning message if the mode is switched.
The driver will switch to single-cmd mode after it if even polling
mode doesn't work, too.
Takashi
diff -r 5b67bba2d36f pci/hda/hda_intel.c
--- a/pci/hda/hda_intel.c Tue Aug 08 21:13:42 2006 +0200
+++ b/pci/hda/hda_intel.c Wed Aug 09 12:07:44 2006 +0200
@@ -332,6 +332,7 @@ struct azx {
int position_fix;
unsigned int initialized: 1;
unsigned int single_cmd: 1;
+ unsigned int polling_mode: 1;
};
/* driver types */
@@ -518,8 +519,23 @@ static unsigned int azx_rirb_get_respons
struct azx *chip = codec->bus->private_data;
int timeout = 50;
- while (chip->rirb.cmds) {
+ for (;;) {
+ if (chip->polling_mode) {
+ spin_lock_irq(&chip->reg_lock);
+ azx_update_rirb(chip);
+ spin_unlock_irq(&chip->reg_lock);
+ }
+ if (! chip->rirb.cmds)
+ break;
if (! --timeout) {
+ if (! chip->polling_mode) {
+ snd_printk(KERN_WARNING "hda_intel: "
+ "azx_get_response timeout, "
+ "switching to polling mode...\n");
+ chip->polling_mode = 1;
+ timeout = 50;
+ continue;
+ }
snd_printk(KERN_ERR
"hda_intel: azx_get_response timeout, "
"switching to single_cmd mode...\n");
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