While waiting for an answer I continued my attempts to get this to work, unfortunately without success. I tried all models from patch_realtek.c (alsa version 1.0.18a), umuting the channels with alsa mixer and running speaker test on each model selection - but no luck with surround there. I also tried hda_analyzer from http://git.alsa-project.org/?p=alsa.git;a=tree;f=hda-analyzer;hb=HEAD run.py downloaded hda_analyzer.py and hda_codec.py which bailed out with an error: Downloaded all files, executing hda_analyzer.py Traceback (most recent call last): File "/dev/shm/hda-analyzer/hda_analyzer.py", line 906, in <module> main() File "/dev/shm/hda-analyzer/hda_analyzer.py", line 893, in main if read_nodes() == 0: File "/dev/shm/hda-analyzer/hda_analyzer.py", line 46, in read_nodes read_nodes2(c.card, i) File "/dev/shm/hda-analyzer/hda_analyzer.py", line 36, in read_nodes2 c.analyze() File "/dev/shm/hda-analyzer/hda_codec.py", line 821, in analyze pcm = self.param_read(self.afg, PARAMS['PCM']) File "/dev/shm/hda-analyzer/hda_codec.py", line 745, in param_read return self.rw(nid, VERBS['PARAMETERS'], param) File "/dev/shm/hda-analyzer/hda_codec.py", line 730, in rw verb = (nid << 24) | (verb << 8) | param TypeError: unsupported operand type(s) for <<: 'NoneType' and 'int' I am not sure if this is OK, but I patched hda_codec.py and was able to proceed. --- hda-analyzer/hda_codec.py 2009-01-05 21:11:33.672001401 +0100 +++ /tmp/hda-analyzer/hda_codec.py 2009-01-05 21:13:13.000000000 +0100 @@ -727,6 +727,8 @@ def rw(self, nid, verb, param): """do elementary read/write operation""" + if not nid: + nid = 0 verb = (nid << 24) | (verb << 8) | param res = ioctl(self.fd, IOCTL_VERB_WRITE, struct.pack('II', verb, 0)) return struct.unpack('II', res)[1] I spent quite some time with hda_analyzer but was not able to produce any useful results. So at this point I am really stuck. Can anyone suggest what I could try next? How to proceed? Kind regards, Jin On Thu, Dec 25, 2008 at 08:24:56PM +0100, Sergey 'Jin' Bostandzhyan wrote: > Hi, > > there's been a thread about a similar issue around 2008-04, it ended with a > working front left/right setup, which is of course better than no sound, but > it would be really nice to be able to use all available speakers. > > The notebook has 5.1 surround, but all speakers except front left and front > right stay silent. > > I'm running Fedora 10, 2.6.27.9-159.fc10.x86_64, > > # cat /proc/asound/version > Advanced Linux Sound Architecture Driver Version 1.0.18a. > > # cat /proc/asound/cards > 0 [Intel ]: HDA-Intel - HDA Intel > HDA Intel at 0xfc300000 irq 22 > 1 [HDMI ]: HDA-Intel - HDA ATI HDMI > HDA ATI HDMI at 0xc7eec000 irq 17 > > When I select model "auto", then I get a working front left and front right > speaker. When I select model "acer-aspire", everything is mute and I have > to use the hda-verb utility to get some sound out of the front speakers, so > right now I am using the "auto" option. > > I see a segfault in alsactl when I look at dmesg, not sure if this is > related to the problem: > > HDA Intel 0000:00:1b.0: PCI INT A -> GSI 22 (level, low) -> IRQ 22 > HDA Intel 0000:00:1b.0: setting latency timer to 64 > ALSA sound/pci/hda/hda_codec.c:2587: hda_codec: model 'auto' is selected > ALSA sound/pci/hda/hda_codec.c:3303: autoconfig: line_outs=1 (0x14/0x0/0x0/0x0/0x0) > ALSA sound/pci/hda/hda_codec.c:3307: speaker_outs=0 (0x0/0x0/0x0/0x0/0x0) > ALSA sound/pci/hda/hda_codec.c:3311: hp_outs=1 (0x15/0x0/0x0/0x0/0x0) > ALSA sound/pci/hda/hda_codec.c:3312: mono: mono_out=0x0 > ALSA sound/pci/hda/hda_codec.c:3320: inputs: mic=0x12, fmic=0x18, line=0x1a, fline=0x0, cd=0x0, aux=0x0 > HDA Intel 0000:01:00.1: PCI INT B -> GSI 17 (level, low) -> IRQ 17 > HDA Intel 0000:01:00.1: setting latency timer to 64 > alsactl[1631]: segfault at 0 ip 00000000004106e7 sp 00007fffb7682fa0 error 4 in alsactl[400000+14000] > alsactl[1624]: segfault at 0 ip 00000000004106e7 sp 00007fff4ba9e3c0 error 4 in alsactl[400000+14000] > > The full output of the alsa-info script is here: > http://www.alsa-project.org/db/?f=405364959a8f52c85f045f35fa1f3bf4536b13bc > > I have a working setup to compile the alsa-driver, so I'm ready to test > whatever is needed :) Any ideas? > > Kind regards, > Jin > _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel