Got this working, based on the comments above (Thank you all), using the following steps: 1- Disable PRIME in BIOS 2- Select Discrete Graphics in BIOS 3- Update /etc/default/grub to include GRUB_CMDLINE_LINUX_DEFAULT="thinkpad-acpi.brightness_enable=1 acpi_backlight=vendor" 4- update-grub 5- apt-get remove --purge "nvidia*" 6- Add https://launchpad.net/~oibaf/+archive/ubuntu/graphics-drivers PPA 7- apt update && apt -y upgrade 8- Select Nouveau as display driver, under Software & Updates, Additional Drivers tab
After reboot, I am able to use LVDS, VGA and DVI. The only snag is that contrast cannot be controlled via keyboard, due to Step 3, above. As a work around, I do: echo x | sudo tee /sys/class/backlight/nv_backlight/brightness, where x is between 0 to cat /sys/class/backlight/nv_backlight/max_brightness. So far, it has been a very good experience, with glxgear showing 60 fps and fan running quieter. Cheers, -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1556459 Title: [Lenovo ThinkPad W530] Regression: cannot set up 3 display configuration any more (Optimus) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1556459/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
