I would appreciate any help regarding these critical errors indicated in dmesg log. My laptop has a nvidia graphics card and still I have not managed to install the right driver for it.
That’s an old nvidia chipset, you need the older series drivers for that.
The other messages relate to an atheros chipset and a realtek chipset by the look, the bluetooth message is probably related to the atheros or realtek issue as well, as bluetooth is usually provided by the onboard wireless network chipset.