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. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1786495 Title: [Precision M4800, Realtek ALC3226, Green Headphone Out, Front] No sound at all To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1786495/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
