By reading Ubuntu and UEFI on Lenovo Thinkcentre M92P · GitHub the M92 seem to be designed as Windows only device 
You can try to create a fake UEFI boot entry as described in the linked solution. Boot the installer in UEFI mode and use <Alt>-F3 to get a console.
Maybe you did boot the USB installer in legacy mode and the system is using EFI afterwards.
If the USB stick is listed twice in boot menu try the other entry.
Thread 1 (Thread 0x5a797370 (LWP 827)):
#0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#1 0x74d8b184 in __GI_abort () at abort.c:79
#2 0x74ca28b0 in __gnu_cxx::__verbose_terminate_handler() () from /usr/lib/libstdc++.so.6
#3 0x74ca05ec in ?? () from /usr/lib/libstdc++.so.6
#4 0x74ca0660 in std::terminate() () from /usr/lib/libstdc++.so.6
#5 0x74ca09c8 in __cxa_throw () from /usr/lib/libstdc++.so.6
#6 0x74ca0fd4 in operator new(unsigned int) () from /usr/lib/libstdc++.so.6
#7 0x74ce481c in std::string::_Rep::_S_create(unsigned int, unsigned int, std::allocator<char> const&) () from /usr/lib/libstdc++.so.6
#8 0x74ce5864 in std::string::_Rep::_M_clone(std::allocator<char> const&, unsigned int) () from /usr/lib/libstdc++.so.6
#9 0x74ce5920 in std::string::reserve(unsigned int) () from /usr/lib/libstdc++.so.6
#10 0x74ce5e7c in std::string::push_back(char) () from /usr/lib/libstdc++.so.6
#11 0x6a03eb5c in PVRIptvData::GzipInflate(std::string const&, std::string&) () from /storage/.kodi/addons/pvr.iptvsimple/pvr.iptvsimple.so.3.5.7
#12 0x6a0401e8 in PVRIptvData::LoadEPG(long, long) () from /storage/.kodi/addons/pvr.iptvsimple/pvr.iptvsimple.so.3.5.7
#13 0x6a03f264 in PVRIptvData::GetEPGForChannel(ADDON_HANDLE_STRUCT*, PVR_CHANNEL const&, long, long) () from /storage/.kodi/addons/pvr.iptvsimple/pvr.iptvsimple.so.3.5.7
#14 0x6a03d00c in GetEPGForChannel () from /storage/.kodi/addons/pvr.iptvsimple/pvr.iptvsimple.so.3.5.7iptvximple is terminating kodi while decompressing EPG data. Maybe OOM, check dmesg/journalctl.
Remove the EPG data to fix the crash.
I currently have the old wifi dongle and the new one connected.
... and the system is only using the old wifi dongle.
Please use the new one only. On the other side I cannot promise this will show anyrhing.
To just have 5.1 on a soundbar use TV (AC3) configuration from Audio quickstart guide - Official Kodi Wiki
You can check the configuration by downloading and playing the AC3 test file from TFM Group Software. It works if you hear the LFE test.
Unlike Windows where you can navigate around changing drivers and power / driver settings, this is a little intimidating. A6200/A6210/WNDA3100v2 wireless adapter intermittently disconnects | Answer | NETGEAR Support
There is no interactive interface. After installing the Network Tools addon from the LE repo you can use the iw* command line tools to configure wireless parameters.
But I cannot promise that you find a similar option.
Please remember to remove your copied firmware files when testing this.
AC3/DTS 5.1 is transported over 2.0 PCM channels.
Good to hear that it is working.
I ended up putting a copy of both mt7662.bin and mt7662_rom_patch.bin (without the u, just renamed the original files), in firmware, the ones WITH u's in mediatek:
/storage/.config/firmware
/storage/.config/firmware/mediatek/
I'm not sure which one got it going but it worked. I got the idea for the two different sets from this post ASUS USB-N53 B1: failed to load ROM patch · Issue #232 · openwrt/mt76 · GitHub (LorenzoBianconi, really who seems to know what he is doing, unlike me).
The files in firmware/mediatek/ are used by the kernel 4.19.36 driver (shown in your modinfo post).
The kernel 5.1.1 driver is looking for them firmware/ with different name - please don't ask me why
For future reference, the FOUR files I used, I found in kernel/git/firmware/linux-firmware.git - Repository of firmware blobs for use with the Linux kernel, in the latest gz file. It's a 78M file with ALL the firmware, my file name was linux-firmware-20190514.tar.gz. I extracted it with Z-Zip, found the files in:
You can copy only the needed files directly from the linux-firmware git tree using the plain links.
For DTS and/or AC3 only configuration you have to set 2.0 channels.
For the records: start with the Audio quickstart guide - Official Kodi Wiki when configuring audio.
Please check file name again.
Put mt7662_rom_patch.bin into /storage/.config/firmware and reboot. It will be automatically linked to /var/lib/firmware.
You may have to rename mt7662u_rom_patch.bin from linux-firmware if there is no other firmware file.
Please type journalctl|paste and post the link after a fresh reboot and authentication try.
Missing firmware, try
mkdir -p /storage/.config/firmware/mediatek
wget -P /storage/.config/firmware/mediatek https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/plain/mediatek/mt7610u.binand reboot.
Audio quickstart guide - Official Kodi Wiki
Use TV (AC3) and add DTS.
yubby Meganiekje Sorry, wrong thread. LE 8.2.5/Kodi 17 do not support VAAPI on AMD.
Add the radeon.lockup_timeout=xxxxx kernel parameter, see this post.