No audio after suspend/sleep mode

Thanks for the reply. I'm currently running KaOS in live mode. Here's SysInfo when the audio is working fine (before suspend); I will follow up with another reply with the log after suspend mode when the sound fails. I booted into KaOS UEFI (nonfree Nvidia); the laptop is i7 with 10th gen Intel and Nvidia.

cat /etc/KaOS-release
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inxi -Fxz
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System:    Host: <HOSTNAME> Kernel: 5.4.7-1 x86_64 bits: 64 compiler: gcc v: 9.2.0 
           Desktop: KDE Plasma 5.17.4 Distro: KaOS 2020 
Machine:   Type: Laptop System: TIMI product: Mi Laptop Pro 15 v: N/A serial: <filter> 
           Mobo: TIMI model: TM1905 v: AX23XXAXE serial: <filter> UEFI: TIMI v: XMACM500P0201 
           date: 09/16/2019 
Battery:   ID-1: BAT0 charge: 59.3 Wh condition: 59.3/60.0 Wh (99%) model: SUNWODA R15B01W 
           status: Full 
CPU:       Topology: Quad Core model: Intel Core i7-10510U bits: 64 type: MT MCP arch: Kaby Lake 
           rev: C L2 cache: 8192 KiB 
           flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 36799 
           Speed: 802 MHz min/max: 400/4900 MHz Core speeds (MHz): 1: 900 2: 900 3: 901 4: 900 
           5: 900 6: 900 7: 900 8: 900 
Graphics:  Device-1: Intel vendor: Xiaomi driver: i915 v: kernel bus ID: 00:02.0 
           Device-2: NVIDIA GP108M [GeForce MX250] vendor: Xiaomi driver: nouveau v: kernel 
           bus ID: 01:00.0 
           Display: x11 server: X.Org 1.20.6 driver: modesetting unloaded: vesa 
           resolution: 1920x1080~60Hz 
           OpenGL: renderer: Mesa DRI Intel UHD Graphics (Comet Lake 3x8 GT2) v: 4.5 Mesa 19.2.8 
           direct render: Yes 
Audio:     Device-1: Intel vendor: Xiaomi driver: snd_hda_intel v: kernel bus ID: 00:1f.3 
           Sound Server: ALSA v: k5.4.7-1 
Network:   Device-1: Intel driver: iwlwifi v: kernel port: 4000 bus ID: 00:14.3 
           IF-ID-1: enp0s20f0u9 state: unknown speed: N/A duplex: N/A mac: <filter> 
Drives:    Local Storage: total: 968.32 GiB used: 85.9 MiB (0.0%) 
           ID-1: /dev/nvme0n1 vendor: Intel model: SSDPEKNW010T8 size: 953.87 GiB 
           ID-2: /dev/sda type: USB vendor: Toshiba model: TransMemory size: 14.45 GiB 
Partition: ID-1: / size: 11.63 GiB used: 85.9 MiB (0.7%) fs: aufs source: ERR-102 
Sensors:   System Temperatures: cpu: 57.0 C mobo: N/A 
           Fan Speeds (RPM): N/A 
Info:      Processes: 209 Uptime: 3m Memory: 15.51 GiB used: 1.50 GiB (9.6%) Init: systemd 
           runlevel: 5 Compilers: gcc: 9.2.0 Client: Unknown Client: octopi inxi: 3.0.37 


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journalctl -b -p err
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cat /etc/pacman.conf
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#
# /etc/pacman.conf
#
# See the pacman.conf(5) manpage for option and repository directives

#
# GENERAL OPTIONS
#
[options]
# The following paths are commented out with their default values listed.
# If you wish to use different paths, uncomment and update the paths.
#RootDir     = /
#DBPath      = /var/lib/pacman/
#CacheDir    = /var/cache/pacman/pkg/
#LogFile     = /var/log/pacman.log
HoldPkg     = pacman glibc pacman-helpme
#XferCommand = /usr/bin/wget --passive-ftp -c -O %o %u
#XferCommand = /usr/bin/curl %u > %o
#CleanMethod = KeepInstalled
#UseDelta    = 0.7
Architecture = auto

# Pacman won't upgrade packages listed in IgnorePkg and members of IgnoreGroup
IgnorePkg   = 
#IgnoreGroup =

#NoUpgrade   =
#NoExtract   =

# Misc options (all disabled by default)
#NoPassiveFtp
#UseSyslog
Color
#TotalDownload
CheckSpace
VerbosePkgLists
ILoveCandy

# By default, pacman accepts packages signed by keys that its local keyring
# trusts (see pacman-key and its man page), as well as unsigned packages.
SigLevel = Never
LocalFileSigLevel = Never
#RemoteFileSigLevel = Required

#
# REPOSITORIES
#   - can be defined here or included from another file
#   - pacman will search repositories in the order defined here
#   - local/custom mirrors can be added here or in separate files
#   - repositories listed first will take precedence when packages
#     have identical names, regardless of version number
#   - URLs will have $repo replaced by the name of the current repo
#
# Repository entries are of the format:
#       [repo-name]
#       Server = ServerName
#       Include = IncludePath
#
# The header [repo-name] is crucial - it must be present and
# uncommented to enable the repo.
#

[core]
Include = /etc/pacman.d/mirrorlist

[main]
Include = /etc/pacman.d/mirrorlist

[apps]
Include = /etc/pacman.d/mirrorlist

# An example of a custom package repository.  See the pacman manpage for
# tips on creating your own repositories.
#[custom]
#Server = file:///home/custompkgs


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pacman -Qm
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cat /var/log/pacman.log
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cat /var/log/installation.log
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I installed KaOS (with non-free Nvidia) along Windows 10 using the automated install process. The KaOS booting/login process is very slow; when I pass the plasma screen and I'm greeted with the Welcome page, the system freezes.

I have a feeling that I'm facing similar installation issues as I did two years ago (see my earlier posts), namely related to hybrid graphics. I attempted to login by appending the kernel line at boot to show_status=3 blacklist=nouveau but it didn't help: this time I wasn't even able to pass the login screen. I understand that the current KaOS includes support for hybrid graphics. Does this mean that the installer sorts things out automatically, or the user still needs to set things up manually? Is it possible to select Intel as the primary driver, and select Nvidia as the secondary one, used by the system if more resources are needed? Any suggestions on how to go around this, before we tackle the audio issue? I'm sorry about all this trouble - the info about my system should be retrieved above, in case it helps.

P.S. If it's not too much trouble, could you allow me to edit my previous posts? I'd like to post the logs vis pastee.ee.

A quick update: the boot/login process was faster after I added `nouveau.modeset=0'at the end of the boot kernel line. This modification to boot parameters enabled me to perform system upgrades.

I rebooted the system after the updates (without modifying the kernel at boot). I was able to log in, although the wireless card is not detected (I’m able to connect to the internet using phone USB tethering).
Any suggestions on that front?

I was able to test the audio before suspend, and it worked. Once I logged back in, the sound failed.
I will follow up with system info and error logs shortly.