Hello, I use HP Dragonfly G2, Arch linux, kernel 6.1.9, and I upgraded the firmware from 1.9.1 to 1.11 (using fwupdmgr/LVFS), and this upgrade broke tablet mode detection on my laptop. I did some debugging, and that's what I found: 1. On both firmware versions: hp-wmi registers SW_TABLET_MODE, but never reports events. Although HPWMI_EVENT_GUID is present on my system, hp_wmi_notify never gets any events of any kind. Good thing is that at least hp_wmi_get_tablet_mode (/sys/devices/platform/hp-wmi/tablet) works on my laptop. 2. "Intel HID switches" is the device that reports actual SW_TABLET_MODE events on firmware 1.9.1, but not anymore on firmware 1.11. SW_TABLET_MODE is registered after the first event (by auto_add_switch, on firmware 1.9.1 only). 3. SW_TABLET_MODE reported by "Intel HID switches" (on firmware 1.9.1) differs from /sys/devices/platform/hp-wmi/tablet, when the laptop is not fully folded, but put into a stand position (the hinge is open more than 180°, the keyboard faces the table). The reason is because hp-wmi only treats system_device_mode[0] == 6 as tablet, but 5 (stand mode) isn't included, while "Intel HID switches" report SW_TABLET_MODE = 1 in the stand mode. I'm pretty sure about my findings, I flashed each of these two firmware versions again and tested what happens in hp-wmi and intel/hid, of course without changing any software versions. Regarding point 3, I can send a patch for hp-wmi, but it's not going to be useful for my laptop because of point 1, and I can't be fully sure it doesn't break other HP laptops (unless Jorge confirms?). Now back to the main topic. There are two directions that I see: 1. Fix the regression in the firmware and make Intel HID switches work again. Unfortunately, I didn't have success reporting the firmware bug via HP customer support, and they don't seem to admit the bug or even having uploaded their firmware to LVFS. If Jorge (or anyone else on the mailing list) could give me some contact of a person responsible for firmware on LVFS or the proper way to file a bug report, I would highly appreciate it. Maybe Alex has an idea why intel/hid could stop working? 2. Somehow tweak hp-wmi to start getting events on my laptop and switch to SW_TABLET_MODE reports from hp-wmi (also fixing the stand mode reports). For this, I would need help from Jorge (or someone who knows HP laptop internals), I don't have ideas why it might be broken for me. I will appreciate any help, and I'm happy to provide additional information if needed. Thanks, Max
