[marix]

since upgrading today to 12.2, the adding of sleep 10 or even sleep 20 to lightdm.conf does nothing whatsoever.
it seems xbmc is actually started earlier than lightdm.

I added
echo Sleep Starting > /dev/kmsg
sleep 20
echo Sleep Ending > /dev/kmsg
before
exec lightdm

and the result is

[ 8.436034] hda-intel 0000:00:1b.0: azx_get_response timeout, switching to polling mode: last cmd=0x100f0000
[ 9.440037] hda-intel 0000:00:1b.0: Codec #1 probe error; disabling it...
[ 10.452053] hda-intel 0000:00:1b.0: Codec #2 probe error; disabling it...
[ 11.464034] hda-intel 0000:00:1b.0: Codec #3 probe error; disabling it...
[ 11.504573] input: HDA Intel Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input3
[ 11.505084] input: HDA Intel Front Headphone as /devices/pci0000:00/0000:00:1b.0/sound/card0/input4
[ 11.505513] input: HDA Intel Line Out as /devices/pci0000:00/0000:00:1b.0/sound/card0/input5
[ 11.506921] hda-intel 0000:02:00.1: Handle VGA-switcheroo audio client
[ 11.506931] hda_intel: codec_mask forced to 0xf2
[ 14.540037] hda-intel 0000:02:00.1: azx_get_response timeout, switching to polling mode: last cmd=0x400f0000
[ 15.548035] hda-intel 0000:02:00.1: Codec #4 probe error; disabling it...
[ 16.560040] hda-intel 0000:02:00.1: Codec #5 probe error; disabling it...
[ 17.572037] hda-intel 0000:02:00.1: Codec #6 probe error; disabling it...
[ 18.584041] hda-intel 0000:02:00.1: Codec #7 probe error; disabling it...
[ 18.800515] input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1c.3/0000:02:00.1/sound/card1/input6
[ 19.082253] init: udev-fallback-graphics main process (1367) terminated with status 1
[ 19.227457] init: xbmcbuntu-wait (lightdm) main process (1380) killed by TERM signal
[ 19.230507] init: xbmcbuntu-wait (ubiquity) main process (1383) killed by TERM signal
[ 19.265424] Sleep Starting
[ 39.267920] Sleep Ending