At Fri, 24 Feb 2012 16:41:43 +0400, 107 wrote:

Hello, I have no sound on my Sony Vaio SZ4XRN laptop with newest kernels. Sound: hda-intel, sigmatel - STAC9872

To solve this issue I make this patch for sound/pci/hda/patch_sigmatel.c:

--- patch_sigmatel.c.bak 2012-02-23 21:01:28.577515317 +0400 +++ patch_sigmatel.c 2012-02-23 21:53:21.035605216 +0400 @@ -6357,7 +6357,16 @@ */

static const struct hda_verb stac9872_core_init[] = {

•   {0x15, AC_VERB_SET_CONNECT_SEL, 0x1}, /* mic-sel: 0a,0d,14,02 */
  

•   {0x0a, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_HP }, /* HP <- 0x2 */
  

•   {0x0f, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT }, /* Speaker <- 0x5 */
  

•   {0x0d, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_VREF80 }, /* Mic? (<- 0x2) */
  

•   {0x0e, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_IN }, /* CD */
  

•   {0x14, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_VREF80 }, /* Mic? */
  

•   {0x15, AC_VERB_SET_CONNECT_SEL, 0x2 /*0x1*/ }, /* mic-sel: 0a,0d,14,02 */
  

•   {0x02, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_MUTE}, /* HP */
  

•   {0x05, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_MUTE}, /* Speaker */
  

•   {0x09, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_MUTE(0)}, /* capture sw/vol -> 0x8 */
  

•   {0x07, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_UNMUTE(0)}, /* CD-in -> 0x6 */
    {0x15, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE}, /* Mic-in -> 0x9 */
    {}
  

};

Constants got from old kernel (2.6.22). With this patch sound works fine. Thank you.

Most of verbs above must be superfluous, but some of them might be needed in your case. Could you give alsa-info.sh outputs (run with --no-upload option) on both working and non-working cases?

thanks,

Takashi