[Ubuntu 20.04 LTS on Lenovo 9i Yoga] Not detecting touch pad, sound card, touch screen stylus or brightness controls

[Theo Giroud]

Touch pad, stylus, sound card not detected. Brightness controls don't work.

xinput --list
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ MOSART Semi. 2.4G Keyboard Mouse id=9 [slave pointer (2)]
⎜ ↳ MOSART Semi. 2.4G Keyboard Mouse Consumer Control id=10 [slave pointer (2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
    ↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
    ↳ Power Button id=6 [slave keyboard (3)]
    ↳ Sleep Button id=7 [slave keyboard (3)]
    ↳ MOSART Semi. 2.4G Keyboard Mouse id=8 [slave keyboard (3)]
    ↳ MOSART Semi. 2.4G Keyboard Mouse System Control id=11 [slave keyboard (3)]
    ↳ Integrated Camera: Integrated C id=12 [slave keyboard (3)]
    ↳ Ideapad extra buttons id=13 [slave keyboard (3)]
    ↳ AT Translated Set 2 keyboard id=14 [slave keyboard (3)]
    ↳ MOSART Semi. 2.4G Keyboard Mouse Consumer Control id=15 [slave keyboard (3)]

MOSART is my bluetooth mouse.

lspci
00:00.0 Host bridge: Intel Corporation Device 9a14 (rev 01)
00:02.0 VGA compatible controller: Intel Corporation Device 9a49 (rev 01)
00:04.0 Signal processing controller: Intel Corporation Device 9a03 (rev 01)
00:06.0 PCI bridge: Intel Corporation Device 9a09 (rev 01)
00:07.0 PCI bridge: Intel Corporation Device 9a23 (rev 01)
00:07.1 PCI bridge: Intel Corporation Device 9a25 (rev 01)
00:07.2 PCI bridge: Intel Corporation Device 9a27 (rev 01)
00:07.3 PCI bridge: Intel Corporation Device 9a29 (rev 01)
00:0a.0 Signal processing controller: Intel Corporation Device 9a0d (rev 01)
00:0d.0 USB controller: Intel Corporation Device 9a13 (rev 01)
00:0d.2 USB controller: Intel Corporation Device 9a1b (rev 01)
00:0d.3 USB controller: Intel Corporation Device 9a1d (rev 01)
00:12.0 Serial controller: Intel Corporation Device a0fc (rev 20)
00:14.0 USB controller: Intel Corporation Device a0ed (rev 20)
00:14.2 RAM memory: Intel Corporation Device a0ef (rev 20)
00:14.3 Network controller: Intel Corporation Device a0f0 (rev 20)
00:15.0 Serial bus controller [0c80]: Intel Corporation Device a0e8 (rev 20)
00:15.1 Serial bus controller [0c80]: Intel Corporation Device a0e9 (rev 20)
00:15.2 Serial bus controller [0c80]: Intel Corporation Device a0ea (rev 20)
00:15.3 Serial bus controller [0c80]: Intel Corporation Device a0eb (rev 20)
00:16.0 Communication controller: Intel Corporation Device a0e0 (rev 20)
00:1f.0 ISA bridge: Intel Corporation Device a082 (rev 20)
00:1f.3 Multimedia audio controller: Intel Corporation Device a0c8 (rev 20)
00:1f.4 SMBus: Intel Corporation Device a0a3 (rev 20)
00:1f.5 Serial bus controller [0c80]: Intel Corporation Device a0a4 (rev 20)
01:00.0 Non-Volatile memory controller: Sandisk Corp Device 5006

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: ubiquity (not installed)
ProcVersionSignature: Ubuntu 5.4.0-58.64-generic 5.4.73
Uname: Linux 5.4.0-58-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.14
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Sat Dec 12 23:11:02 2020
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed maybe-ubiquity quiet splash ---
InstallationDate: Installed on 2020-12-10 (2 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ubiquity
Symptom: installation
UpgradeStatus: No upgrade log present (probably fresh install)

[Theo Giroud (theogiroud)]

The input mic is also not working.

[Theo Giroud (theogiroud)]

I changed grub parameters so brightness, mic and sound works. Touch pad is very lagged and touch screen does not recognize the stylus.

[Seth Arnold (seth-arnold)]

Thanks for taking the time to report this bug and helping to make Ubuntu better. We appreciate the difficulties you are facing, but this appears to be a "regular" (non-security) bug. I have unmarked it as a security issue since this bug does not show evidence of allowing attackers to cross privilege boundaries nor directly cause loss of data/privacy. Please feel free to report any other bugs you may find.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.