Comment 17 for bug 1508826

Thinkpad T440p with prime configuration. Same problem with headphone audio.
BIOS : GLET74WW (2.28 )
The issue doesn't occur on first boots, only after reboots.
I've tried the hdajackretask workaround and it didn't work, not sure what i'm missing.(had the same addresses in sys/class)

Can someone try to check if they can reproduce this behavior?
I'll try upgrading the bios version and update the results