Hi
I am having real trouble booting to my Thinkpad X230. This is a recent development and I have no idea how to debug it. Can someone recognise the symptoms and help me debug it please?
I have had the Thinkpad dual-booting Win7 & Ubuntu for a few years (since 14.04) without any issues whatsoever. Recently, I've decided to upgrade from 16.04 to 18.04.1. A fresh install later and all was well.
I don't use the Win7 partition very often but I had to log in soon after the upgrade to 18.04.1. Once on Windows, I accepted the BIOs critical upgrade suggested by the Lenovo software manager: upgrading from 2.70 to 2.73.
Since then Ubuntu stopped booting other than in rescue mode. This is supper annoying because I loose control over the brightness of the display, which is set to its minimum, and I can barely see what I am doing.
I have tried the following (unsuccessfully)
-
Downgrade back to BIOS 2.70 (it seems that not all components of the upgrade have actually been downgraded)
-
Installed Kubuntu 18.04, Ubuntu Mate 18.10 (the current version on the laptop)
Any help is greatly appreciated
Thanks