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Description of problem:
On a fresh FC6 install, sound was ok (kernel 2.6.18).
After updating to last kernel, no PCM device is shown in system-config-sound, while module (snd_hda_intel) seems correctly loaded (no errors in dmesg).
Rebooting using kernel 2.6.18 solves the problem.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Install kernel kernel-2.6.20-1.2925.fc6
3. Try to configure sound ou to play one
Sound should works.
The problem with ATI sound should be fixed in 2.6.20-1.2933.fc6
*** This bug has been marked as a duplicate of 231414 ***