Kernel Update to 4.20.11 and reinstall of Nvidia Driver 418.43-2

[Severus157]

Hello,

Together with the Kernel Update 4.20.11 I had to do a complete Reinstallation of the Nvidia Drivers to Version 418.43-2. (Nvidia seems to have decided out of the Blue to move my Graphics Card out of Legacy 390xx to the new Version, after moving it to Legacy just a few months ago...)

I have a Thinkpad W530 using a Nvidia Quadro K2000M. And Nvhda was working perfectly with Nvidia-390xx since October 2018.

• I removed the Kernel Module from DKMS
• Removed Nvhda with yay -Rs nvhda-dkms-git
• Rebooted
• Reinstalled Nvhda from AUR

'sudo modprobe nvhda' seems also to run through fine. No errors there.
Then to switch on Nvhda also seems to run with 'sudo tee /proc/acpi/nvhda <<<ON'

But even though anything looks fine, I cannot get Audio through Displayport anymore. Config of Bumblebee hasn't changed at all.

dmesg upon enabling nvhda gives me:
[ 2659.797670] nvhda: Found nv audio device 0000:01:00.1 [ 2659.912007] pci 0000:01:00.1: Dropping the link to 0000:01:00.0 [ 2659.912019] nvhda: disabling audio [ 2664.481122] nvhda: enabling audio [ 2664.481160] pci 0000:01:00.1: [10de:0e1b] type 00 class 0x040300 [ 2664.481195] pci 0000:01:00.1: reg 0x10: [mem 0xf1080000-0xf1083fff] [ 2664.481521] nvhda: Audio found, adding [ 2664.481532] pci 0000:01:00.1: BAR 0: assigned [mem 0xf1080000-0xf1083fff] [ 2664.481572] pci 0000:01:00.1: Linked as a consumer to 0000:01:00.0 [ 2664.481760] snd_hda_intel 0000:01:00.1: Disabling MSI [ 2664.481771] snd_hda_intel 0000:01:00.1: Handle vga_switcheroo audio client [ 2665.057288] input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input44 [ 2665.057453] input: HDA NVidia HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input45 [ 2665.057662] input: HDA NVidia HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input46

Are there any logs by Nvhda to Look up or anything else I can provide?

Edit: Noticed something else weird. If I use Alsamixer the Nvidia Card is detected after turning on Nvhda. But switching is impossible. Graphics card is not shown anywhere else. Gnome Settings just show Internal Speakers.

[hhfeuer]

The nvhda module is working fine, sound device is turned on.
The nvidia driver often has problems with audio over displayport, though.
No audio possible over DP 1.2 links:
https://devtalk.nvidia.com/default/topic/913322/linux/sound-over-displayport-sst-mst-/post/5098719/#5098719
https://devtalk.nvidia.com/default/topic/1002126/linux/no-displayport-audio-with-gtx1070-ubuntu-16-04-linux-4-8-0-45-driver-version-378-13/post/5294687/#5294687

Driver regression starting with v415:
https://devtalk.nvidia.com/default/topic/1044547/linux/audio-problems-with-the-415-18-drivers/post/5311687/#5311687

[Severus157]

Damn... So no chance of getting Audio back? I mean it was working fine with Nvidia 390xx for months... Nvidia must really be crazy... Months ago they move my Graphics Card to Legacy 390xx, now they move the card back from Legacy to Standard and greeted with no Sound...

[hhfeuer]

The Quadro K2000M is a Kepler device that was never legacy, misinformation. Did you check if you're suffering by the same bug by installing the 390 driver?

[Severus157]

The Quadro really was listed as 390xx Driver a few months ago. Where I couldn't use the Graphics Card with Nvidia 396.24-18 think it was then.
Then had to switch to 390xx to get the graphics card working again. Now yesterday had the whole fun the other way round, when the 390xx Driver stopped working.
Unfortunatly just gotten my new Monitor in October and Nvhda worked perfectly with Nvidia-390xx then.

Graphics Card was only working with 390.87-36 and also Nvhda perfectly, but the Update yesterday to 390.116-1 made the Graphics Card not be supported by 390xx driver anymore.

The one interesting Link for Driver 390.59 where the Quadro K2000M was working with Legacy, whereas it wasn't supported by the 396.24-18 Version.
https://www.nvidia.com/download/driverResults.aspx/134262/en-us

Really this is just a little bit weird what is happening, but hopefully it works again soon. I understand you say it should work. But these driver issues are crazy right now.
Unfortunatly can't check Audio with the new 390xx Driver since it isn't running with Bumblebee if I install it.

[hhfeuer]

Just for info, that driver search on the nvidia website has always been an annoyance and source of misinformation and confusion. The 'Supported Products' list is complete BS. A comprehensive list is in 'Additional Information' ->README->Supported NVIDIA GPU Products where you can search by PCI Product ID.