Messages in this thread | | | Subject | 2.4.21: cmedia PCM not working | Date | Sat, 14 Jun 2003 12:25:43 +0000 (UTC) | From | (Ton Hospel) |
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Hi,
I just compiled and tried kernel 2.4.21. All seems fine except that I have no sound over /dev/dsp (other sources like e.g. "line" work fine).
My soundchip is a SiS 7012, which seems to have a cmedia CMI65.
Having a look at the changes, I see this new line in ac97_codec.c:
{0x434D4941, "CMedia", &cmedia_ops, AC97_NO_PCM_VOLUME },
Commenting out only the AC97_NO_PCM_VOLUME field (and leaving the rest of the line) makes my audio work again. While indeed the volume slider never allowed me to linearly control the volume, it DOES have an effect: - at level 0 there is no sound - at any oher level, there is pcm sound. The volume is in no way influenced by the value, as long as it's not zero
So I suspect that while indeed you don't want a pcm volume level for a CMI65, just adding that line also gets rid of some needed initialization. -- #define struct union /* Great space saver */ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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