I came across this bug looking for a solution. I can reproduce on 1.75 and now 1.76, W variant of the BIOS on my X390 Yoga i5 no vpro.
When you shutdown/reboot the laptop, everything shuts down like normal, but my FnLock and Mute keys stay lit and the screen is black no backlight. The computer wont power back on unless I disconnect any USB-C power sources then Ctrl-Alt-Delete or hold the power button down until it resets. USB-C video/network dongles don't seem to affect it, nor does thunderbolt. Only power adapters cause it to hang. I tried both USB-C ports with my power adapter and they both do it. I experience this on any Linux distro I try. From kernels 5.4 to 5.8, haven't tried further back. For me the 1.76 release wasn't showing up in fwupdmgr so I manually installed it. Simply download n2lul15w.zip from https://pcsupport.lenovo.com/sk/en/products/laptops-and- netbooks/thinkpad-x-series-laptops/thinkpad-x390-yoga/downloads/DS539544 and unzip it. Install the W variant with $ sudo fwupdmgr install ./N2LET76W.cab or the P variant (absolute persistence module must be disabled in the BIOS) Install the W variant with $ sudo fwupdmgr install ./N2LET76P.cab The P or W is if you want the Absolute Persistence module to be force disabled (P). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890415 Title: Lenovo ThinkPad X390 won’t boot while plugged in To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1890415/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
