Public bug reported:
I have an external HDMI monitor attached to my laptop and the nouveau
drivers would detect it but I would only get a black screen and no
display beside the cursor.
Using the NVIDIA drivers makes the external monitor work but it then
disables the built-in audio and tries to send all audio via HDMI. Even
the headphones will stop working.
If I rollback with the zsys backup everything works again. Manually
reverting to nouveau doesn't bring the audio back.
Operating System: Kubuntu 20.04
KDE Plasma Version: 5.18.4
KDE Frameworks Version: 5.68.0
Qt Version: 5.12.8
Kernel Version: 5.4.0-26-generic
OS Type: 64-bit
Processors: 12 × Intel® Core™ i7-9750H CPU @ 2.60GHz
Memory: 31.1 GiB of RAM
# apt-cache policy nvidia-driver-430
nvidia-driver-430:
Installed: (none)
Candidate: 440.82+really.440.64-0ubuntu6
Version table:
440.82+really.440.64-0ubuntu6 500
500 http://gb.archive.ubuntu.com/ubuntu focal/restricted amd64 Packages
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: ubiquity (not installed)
ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30
Uname: Linux 5.4.0-26-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair nvidia_modeset
nvidia
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: KDE
Date: Sat May 2 18:46:38 2020
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed
maybe-ubiquity quiet splash ---
InstallationDate: Installed on 2020-05-02 (0 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
ProcEnviron:
LANGUAGE=en_GB:en
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_GB.UTF-8
SHELL=/bin/bash
SourcePackage: ubiquity
Symptom: installer
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: ubiquity (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal ubiquity-20.04.15
** Attachment added: "files.tar.zip"
https://bugs.launchpad.net/bugs/1876499/+attachment/5365218/+files/files.tar.zip
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https://bugs.launchpad.net/bugs/1876499
Title:
Using NVIDIA drivers 440 (tested) disables built-in laptop speakers
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