No HDMI output (Video/Sound) on my old Wetab

I installed Bodhi and everything works except HDMI output.
In Pulseaudio I have selected Digital Audio, but there is no sound. In Alsamixer I see PCM and it is set to 100%.
In Monitor settings no HDMI is displayed.
In the previous installation of Windows8.1 I had to install the driver for Chrontel CH7036 for HDMI to work.
Can you help me?


System:
Kernel: 5.4.0-99-generic x86_64 bits: 64 compiler: gcc v: 9.3.0
Desktop: Moksha 0.3.4.17201 Distro: Ubuntu 20.04.3 LTS (Focal Fossa)
Machine:
Type: Other-vm? System: PEGATRON product: WeTab 3G v: TT116B01
serial: <filter>
Mobo: PEGATRON model: WeTab 3G v: 30011285 serial: <filter>
BIOS: American Megatrends v: Lucid-GE-133 date: 11/19/2010
Battery:
ID-1: BAT0 charge: 31.2 Wh condition: 32.7/37.0 Wh (88%) model: N/A
status: Unknown
Memory:
RAM: total: 1.93 GiB used: 844.8 MiB (42.8%)
RAM Report:
permissions: Unable to run dmidecode. Root privileges required.
CPU:
Topology: Single Core model: Intel Atom N450 bits: 64 type: MT
arch: Bonnell rev: A L2 cache: 512 KiB
flags: lm nx pae sse sse2 sse3 ssse3 bogomips: 6716
Speed: 1369 MHz min/max: 1000/1667 MHz Core speeds (MHz): 1: 1369 2: 1357
Graphics:
Device-1: Intel Atom Processor D4xx/D5xx/N4xx/N5xx Integrated Graphics
vendor: Pegatron driver: i915 v: kernel bus ID: 00:02.0
Display: x11 server: X.Org 1.20.13 driver: intel
unloaded: fbdev,modesetting,vesa resolution: 1366x768~60Hz
OpenGL: renderer: Mesa DRI Intel Pineview M v: 1.4 Mesa 21.2.6
direct render: Yes
Audio:
Device-1: Intel 82801H HD Audio vendor: Pegatron driver: snd_hda_intel
v: kernel bus ID: 00:1b.0
Device-2: Broadcom and subsidiaries BCM70015 Video Decoder [Crystal HD]
driver: N/A bus ID: 02:00.0
Sound Server: ALSA v: k5.4.0-99-generic
Network:
Device-1: Qualcomm Atheros AR9285 Wireless Network Adapter
vendor: AzureWave AW-NB037H 802.11bgn driver: ath9k v: kernel port: f000
bus ID: 01:00.0
IF: wlp1s0 state: up mac: <filter>
Device-2: Qualcomm Atheros AR3011 Bluetooth type: USB driver: btusb
bus ID: 6-1:3
Drives:
Local Storage: total: 29.82 GiB used: 10.16 GiB (34.1%)
ID-1: /dev/sda vendor: SanDisk model: pSSD-S2 32GB size: 29.82 GiB
Partition:
ID-1: / size: 28.73 GiB used: 10.16 GiB (35.4%) fs: ext4 dev: /dev/sda5
ID-2: /boot/efi size: 511.0 MiB used: 4 KiB (0.0%) fs: vfat dev: /dev/sda1
ID-3: /snap/bare/5 raw size: 4 KiB size: <superuser/root required>
used: <superuser/root required> fs: squashfs dev: /dev/loop5
ID-4: /snap/core18/2284 raw size: 55.5 MiB size: <superuser/root required>
used: <superuser/root required> fs: squashfs dev: /dev/loop0
ID-5: /snap/core20/1328 raw size: 61.9 MiB size: <superuser/root required>
used: <superuser/root required> fs: squashfs dev: /dev/loop3
ID-6: /snap/gnome-3-28-1804/161 raw size: 164.8 MiB
size: <superuser/root required> used: <superuser/root required>
fs: squashfs dev: /dev/loop7
ID-7: /snap/gnome-3-38-2004/99 raw size: 248.8 MiB
size: <superuser/root required> used: <superuser/root required>
fs: squashfs dev: /dev/loop2
ID-8: /snap/gtk-common-themes/1519 raw size: 65.2 MiB
size: <superuser/root required> used: <superuser/root required>
fs: squashfs dev: /dev/loop8
ID-9: /snap/snap-store/558 raw size: 54.2 MiB
size: <superuser/root required> used: <superuser/root required>
fs: squashfs dev: /dev/loop4
ID-10: /snap/snapd/14549 raw size: 43.4 MiB
size: <superuser/root required> used: <superuser/root required>
fs: squashfs dev: /dev/loop6
ID-11: /snap/spotify/57 raw size: 168.2 MiB
size: <superuser/root required> used: <superuser/root required>
fs: squashfs dev: /dev/loop1
Sensors:
System Temperatures: cpu: 50.0 C mobo: N/A
Fan Speeds (RPM): N/A
Repos:
Active apt repos in: /etc/apt/sources.list
1: deb de.archive.ubuntu.com/ubuntu/ focal main restricted
2: deb de.archive.ubuntu.com/ubuntu/ focal-updates main restricted
3: deb de.archive.ubuntu.com/ubuntu/ focal universe
4: deb de.archive.ubuntu.com/ubuntu/ focal-updates universe
5: deb de.archive.ubuntu.com/ubuntu/ focal multiverse
6: deb de.archive.ubuntu.com/ubuntu/ focal-updates multiverse
7: deb de.archive.ubuntu.com/ubuntu/ focal-backports main restricted universe multiverse
8: deb archive.canonical.com/ubuntu focal partner
9: deb security.ubuntu.com/ubuntu focal-security main restricted
10: deb security.ubuntu.com/ubuntu focal-security universe
11: deb security.ubuntu.com/ubuntu focal-security multiverse
Active apt repos in: /etc/apt/sources.list.d/bodhi-repositories.list
1: deb packages.bodhilinux.com/bodhi focal b6main
Info:
Processes: 153 Uptime: 3h 38m Init: systemd runlevel: 5 Compilers:
gcc: 9.3.0 Shell: bash v: 5.0.17 inxi: 3.0.38