Ubuntu
alsa-driver package

  1. Bug #1786495
  2. Comment #5

Comment 5 for bug 1786495

Revision history for this message
Nic30 (nic30) wrote :

Same problem there, also Dell M4800, I am using latest ubuntu 18.10 and it was working until I installed latest nvidia-driver-418. I do not why. There is suspicious message in dmesg.
(If I uninstall the nvidia driver it is still not working and reinstalling of alsa-driver also did not help.)

[ 5.603947] resource sanity check: requesting [mem 0x000c0000-0x000fffff], which spans more than PCI Bus 0000:00 [mem 0x000dc000-0x000dffff window]
[ 5.604084] caller os_map_kernel_space.part.9+0x84/0x90 [nvidia] mapping multiple BARs
[ 6.338946] resource sanity check: requesting [mem 0x000c0000-0x000fffff], which spans more than PCI Bus 0000:00 [mem 0x000dc000-0x000dffff window]
[ 6.339056] caller os_map_kernel_space.part.9+0x84/0x90 [nvidia] mapping multiple BARs

It seems to me that everything is working just some GPIO actually does not enable the output. The system detects the headphones correctly.