The attached patch will unset the S/PDIF-in bit (on LG K1 Express
Laptops only) in the vendor specific register 0x7A of the Realtek ALC655
chip.
Without this patch, there where no sound on the LG K1 Express model:
K1-2333V laptop at all.
Regards
// Magnus Sandin
diff -Nru alsa-kernel/pci/ac97/ac97_patch.c alsa-kernel-patched/pci/ac97/ac97_patch.c
--- alsa-kernel/pci/ac97/ac97_patch.c 2006-08-14 22:13:17.000000000 +0200
+++ alsa-kernel-patched/pci/ac97/ac97_patch.c 2006-08-14 23:20:32.000000000 +0200
@@ -2210,6 +2210,9 @@
if (ac97->subsystem_vendor == 0x1462 &&
ac97->subsystem_device == 0x0131) /* MSI S270 laptop */
val &= ~(1 << 1); /* Pin 47 is EAPD (for internal speaker) */
+ else if (ac97->subsystem_vendor == 0x1462 &&
+ ac97->subsystem_device == 0x0161) /* LG K1 Express Laptop */
+ val &= ~(1 << 1); /* Pin 47 is EAPD (for internal speaker) */
else
val |= (1 << 1); /* Pin 47 is spdif input pin */
}
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