The BIOS 1.9.1 from prev. comment #50 apparently was pulled by Dell, there is no reason given at the link.
I have a 9575 from September/October 2019 and BIOS 1.7.1 (from Aug 7, 2019, which is currently the latest one available on the Dell site (and, side note, fixes the annoying fans-always-on-in-tent-mode issue)), and I have the same behavior as described in comment #48, i.e. it is unresponsive for 30 secs at the login screen, then works fine. Still same problem in Focal Fossa with kernel 5.4. I am pretty sure I did not have this in previous BIOSes ( but not 100% sure. As someone asked, yes it is possible to downgrade BIOS, I went through them all bewteen 1.1.6 and 1.7.1 up and down to narrow down the known tent-fan and touchpad-lower-half-randomly-failing issues). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1822394 Title: [Dell BIOSes dated 27 Mar 2019, XPS 9575, Precision 5530 2-in-1] laptop keyboard & touchpad not working at gdm screen after boot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libinput/+bug/1822394/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
