I can confirm this. I have the same problem after upgrade from 10.10 ->
11.04 with:
00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High
Definition Audio (rev 05)
Subsystem: Hewlett-Packard Company Device 2a90
Flags: bus master, fast devsel, latency 0, IRQ 47
Memory at f7ff8000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [50] Power Management version 2
Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
Capabilities: [100] Virtual Channel
Capabilities: [130] Root Complex Link
Kernel driver in use: HDA Intel
Kernel modules: snd-hda-intel
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https://bugs.launchpad.net/bugs/779049
Title:
[P55A-UD3, Realtek ALC892, Green Speaker, Rear] No sound at all
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