[Lex Computer & Tech Group/LCTG] Trouble with installing Ubuntu on used ThinkPad

[Nelson Caldwell]

Hi Folks,
I'm wondering if anyone can comment on a particular problem I am having 
installing Ubuntu on a used Thinkpad. Because this is pretty specific, 
I'm going to leave some blank spaces here so that non-interested parties 
can quickly delete this message without any further reading.















Here's the story. I haven't used Linux at home for a while, so I'm a bit 
rusty but am otherwise familiar with the linux operating system and 
setups. I bought a used Thinkpad  from BackMarket, really from "Deluxe 
PCs." Here are the specs:
Lenovo ThinkPad X1 Yoga G4 14-inch (2019) - Core I7-8665U - 16 GB - SSD 1 TB
so a moderate powered laptop with a large disk - pretty vanilla. It's in 
good shape as far as appearance goes.

I made a new Ubuntu installation USB stick, and installation was mostly 
ok. The issue is that Bluetooth does not work. What happens is that when 
I enable bluetooth either with F10 or the setting menu, the video goes 
haywire, with the screen flashing on and off and noisy, making the 
computer useless. Sometimes bluetooth is automatically disabled, 
sometimes I have to disable it (F10).  I have had excellent help from 
Deluxe Pcs, but he is convinced the problem is software (missing drivers 
or other). while I think it's hardware.

If I try to attach a bluetooth mouse while bluetooth is enabled, I can 
see that indeed the cursor can be moved by the mouse (in between 
flashing screens), so that's also weird.

Perhaps unrelated, but the audio is pretty bad, compared to say a 
Macbook, but that may be typical for all I know.

So does anyone have any comments, or can recommend a path to 
resolution?  I've been ready to ship the thing back but haven't 
convinced the vendor yet to accept it.

thanks a million!
Nelson Caldwell
2 Aerial St