After upgrade to RHEL 5.4 sound no longer works

Solution Verified - Updated -


  • System with nVidia Corporation MCP55 High Definition Audio controller using snd_hda_intel audio driver has problem playing sound after upgrade from RHEL5.3 to RHEL5.4.
  • Sound works when same system is booted with old kernel (2.6.18-128.7.1.el5). The 5.4 kernel (2.6.18-164.el5) has no sound.


  • Red Hat Enterprise Linux (RHEL) 5.4
  • kernel-2.6.18-164

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