At first, I could not install NVIDIA drivers 'cause a firmware problem. After I fixed this, I installed NVIDIA drivers from command line but when I reboot, instead of NVIDIA, was shown at "about this computer" llvmpipe (LLVM 6.0, 256 bits).
I tried everything, please help, I don't want to format again.
alex@alex:~$ lspci -k | grep -EA3 'VGA|3D|Display'
00:02.0 VGA compatible controller: Intel Corporation UHD Graphics 620 (rev 07)
Subsystem: Acer Incorporated [ALI] Device 1193
Kernel modules: i915
00:14.0 USB controller: Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller (rev 21)
00:02.0 VGA compatible controller: Intel Corporation UHD Graphics 620 (rev 07)
Subsystem: Acer Incorporated [ALI] Device 1193
Kernel modules: i915
00:14.0 USB controller: Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller (rev 21)
lspci -k | grep -EA3 'VGA|3D|Display'
terminal command. – Pilot6 May 18 '20 at 19:05