Comment 11 for bug 541802

The fix for this bug has been included upstream in kernel 2.6.34-rc7, and also cc'd to the stable kernel branch (meaning 2.6.33 and possibly 2.6.32). From the changelog:

commit 8f0f5ff6777104084b4b2e1ae079541c2a6ed6d9
Author: Daniel T Chen
Date: Wed Apr 28 18:00:11 2010 -0400

    ALSA: hda: Fix 0 dB for Packard Bell models using Conexant CX20549 (Venice)

    BugLink: https://launchpad.net/bugs/541802

    The OR's hardware distorts at PCM 100% because it does not correspond to
    0 dB. Fix this in patch_cxt5045() for all Packard Bell models.

    Reported-by: Valombre
    Cc: <email address hidden>
    Signed-off-by: Daniel T Chen
    Signed-off-by: Takashi Iwai