Comment 10 for bug 586347

Did some testing:
0) checked that position_fix is disabled in /etc/modprobe.d/alsa-base
1) uninstalled linux-alsa-driver-modules-2.6.32-22-generic (from audio-dev/ppa)
2) added lucid-proposed repo & updated
3) installed the new kernel provided
(... some messing about w/ custom nvidia drivers & rebooted ...)

  $ uname -a
  Linux harmaakarhu 2.6.32-25-generic #43-Ubuntu SMP Wed Sep 1 09:46:13 UTC 2010 x86_64 GNU/Linux

  $ dmesg | grep hda
  [ 23.134431] hda_intel: position_fix set to 1 for device 104d:9069
  [ 23.353925] hda_intel: Disable MSI for Nvidia chipset
  [ 23.353927] hda_intel: position_fix set to 1 for device 104d:9069
  [ 34.884710] hda-intel: IRQ timing workaround is activated for card #0. Suggest a bigger bdl_pos_adj.

=> no sound (rhythmbox says it's playing, internal audio shows up in sound devices)

4) installed linux-backports-modules-alsa-lucid-generic & rebooted

  $ dmesg | grep hda
  [ 22.867468] hda_codec: ALC275: BIOS auto-probing.
  [ 22.868525] hda_codec: ALC275: no valid ADC found; using fallback 0x8
  [ 22.870616] hda_intel: Disable MSI for Nvidia chipset
  [ 34.256851] hda-intel: IRQ timing workaround is activated for card #1. Suggest a bigger bdl_pos_adj.
  [ 126.288578] hda-intel

=> sound works as it should

was this the correct way to test or should i do something else?