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 Kernel Packages, which is subscribed to linux in 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 Status in libinput package in Ubuntu: Confirmed Status in linux package in Ubuntu: Confirmed Bug description: On a dell XPS 15 2-in-1 with the latest 1.4.0 bios, my touchpad and keyboard are unresponsive at the gdm login screen. Keyboard works to unlock encrypted harddrive before that though. If I plug in a USB keyboard or activate my bluetooth mouse, I can use those to log in, and then after logging in the laptop touchpad and keyboard work again. Logging out of the desktop results in the laptop touchpad and keyboard working on the gdm screen. Did not see this behavior before upgrading from 1.2.0 bios to 1.4.0 bios, but also had not rebooted in a while, so not sure if bios or package upgrades triggered this behavior. ProblemType: Bug DistroRelease: Ubuntu 19.04 Package: gdm3 3.32.0-1ubuntu1 ProcVersionSignature: Ubuntu 5.0.0-8.9-generic 5.0.1 Uname: Linux 5.0.0-8-generic x86_64 ApportVersion: 2.20.10-0ubuntu23 Architecture: amd64 CurrentDesktop: GNOME Date: Fri Mar 29 17:51:00 2019 InstallationDate: Installed on 2018-09-26 (184 days ago) InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725) SourcePackage: gdm3 UpgradeStatus: Upgraded to disco on 2019-03-11 (18 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libinput/+bug/1822394/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
