Fixed in latest mainline kernel v4.19-rc4. Please let me know if you need any additional info
~$ uname -r 4.19.0-041900rc3-generic ~$ ls /sys/bus/iio/ devices drivers drivers_autoprobe drivers_probe uevent ~$ systemctl status iio-sensor-proxy.service ● iio-sensor-proxy.service - IIO Sensor Proxy service Loaded: loaded (/lib/systemd/system/iio-sensor-proxy.service; static; vendor Active: active (running) since Tue 2018-09-18 22:21:24 CEST; 6min ago Main PID: 877 (iio-sensor-prox) Tasks: 3 (limit: 4915) Memory: 2.1M CGroup: /system.slice/iio-sensor-proxy.service └─877 /usr/sbin/iio-sensor-proxy ** Tags added: kernel-fixed-upstream -- 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/1792813 Title: iio-sensor-proxy says: "Could not find any supported sensors" on Dell XPS 15 9575 2-in-1 on Cosmic 18.10 Status in linux package in Ubuntu: Triaged Bug description: On Cosmic, iio-sensor-proxy 2.4, with default 4.18 kernel as well as latest mainline 4.19.0-041900rc3-generic. There is no rotation lock button in the gnome-shell panel menu. Gnome Settings > Device Display shows rotation buttons There is no directory /sys/bus/iio Reproduction: 1. Rotate device, fold display back to tent and tablet modes: -> Rotation is not detected. When folding to tablet mode, device goes to suspend as if display had been closed normally. iio-sensor-proxy finds no sensors: ~$ systemctl status iio-sensor-proxy.service ● iio-sensor-proxy.service - IIO Sensor Proxy service Loaded: loaded (/lib/systemd/system/iio-sensor-proxy.service; static; vendor preset: enabled) Active: inactive (dead) I reported issue as https://github.com/hadess/iio-sensor- proxy/issues/236 and was advised: "Looks like there's no supported sensors, or just no sensors inside this machine. Nothing that we can do about it, except asking your vendor for support (eg. is there one or multiple sensors, and if so, why aren't they supported in the kernel)" I posted the issue in Dell's Project Sputnik's Google+ community ProblemType: Bug DistroRelease: Ubuntu 18.10 Package: linux-image-4.18.0-7-generic 4.18.0-7.8 ProcVersionSignature: Ubuntu 4.18.0-7.8-generic 4.18.5 Uname: Linux 4.18.0-7-generic x86_64 ApportVersion: 2.20.10-0ubuntu9 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: mario 2139 F.... pulseaudio CurrentDesktop: ubuntu:GNOME Date: Sun Sep 16 20:20:48 2018 InstallationDate: Installed on 2018-09-13 (2 days ago) InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Alpha amd64 (20180912) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 0489:e0a2 Foxconn / Hon Hai Bus 001 Device 004: ID 27c6:5395 Bus 001 Device 002: ID 0bda:58f4 Realtek Semiconductor Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Dell Inc. XPS 15 9575 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.18.0-7-generic root=UUID=26ff4c95-5f68-4121-b7d0-989fa705fcc8 ro quiet splash pcie_aspm=force drm.vblankoffdelay=1 i915.fastboot=1 vt.handoff=1 RelatedPackageVersions: linux-restricted-modules-4.18.0-7-generic N/A linux-backports-modules-4.18.0-7-generic N/A linux-firmware 1.175 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/08/2018 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.1.9 dmi.board.name: 0C32VW dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.1.9:bd08/08/2018:svnDellInc.:pnXPS159575:pvr:rvnDellInc.:rn0C32VW:rvrA00:cvnDellInc.:ct10:cvr: dmi.product.family: XPS dmi.product.name: XPS 15 9575 dmi.product.sku: 080D dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1792813/+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