I installed ubuntu 8.04.1 desktop, and sound works fine:
00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03)

For educational purposes, I downloaded, built and installed kernel 2.6.26 from kernel.org, and now sound card no longer works?
(I used fakeroot make-kpkg --initrd ... etc)

I noticed that before, I had loaded modules:
snd_hda_intel 344728 3
snd_pcm_oss 42144 0
snd_mixer_oss 17920 1 snd_pcm_oss
snd_pcm 78596 2 snd_hda_intel,snd_pcm_oss
snd_page_alloc 11400 2 snd_hda_intel,snd_pcm
snd_hwdep 10500 1 snd_hda_intel
snd_seq_dummy 4868 0
snd_seq_oss 35584 0
snd_seq_midi 9376 0
snd_rawmidi 25760 1 snd_seq_midi
snd_seq_midi_event 8320 2 snd_seq_oss,snd_seq_midi
snd_seq 54224 6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_mid i_event
snd_timer 24836 2 snd_pcm,snd_seq
snd_seq_device 9612 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi ,snd_seq
snd 56996 17 snd_hda_intel,snd_pcm_oss,snd_mixer_oss,snd_pcm,sn d_hwdep,snd_seq_dummy,snd_seq_oss,snd_rawmidi,snd_ seq,snd_timer,snd_seq_device
soundcore 8800 1 snd

and now none of these are loaded?

I'm kinda new to compiling my own kernel. What should I check for?