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I was able to solve this by adding "acpi_backlight = vendor" to GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub

I'm unable to change the brightness level of my laptop. Following an answer to this, I added video.only_lcd=0 to GRUB_CMDLINE_LINUX_DEFAULT. It didn't work.

That did it! Amazing, thanks. I did not do the SecureBoot part - I couldn't find the option (and my keypad which I usually keep disabled goes crazy in BIOS anyway and doesn't let me navigate). Thanks...

Thank you for taking the time to do this. I followed your instructions - but I still can't get it to work. I ran the sticky code again. Here - http://paste.ubuntu.com/p/stXZQy7WvV/

here is the link to the output: http://paste.ubuntu.com/p/8KvZTCJwSM/

Hi, I made a mistake when I said I didn't have a /etc/resolv.conf file - I did have one. But I did what you said. No change, though.

My computer suddenly stopped being able to connect to the internet. It detects wifi and I'm able to use other devices to connect.

ifconfig:


enp5s0: flags=4099<UP,BROADCAST,MULTICAST> mtu...