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Description of problem: My HP Spectre x360 (Kaby Lake) has sensors to detect rotation and screen position (it's a 360 degree convertible). These sensors work in Windows; when you bend the screen back, it will rotate the content correctly and the keyboard disables itself. But the sensors are not detected in Fedora 25 with Kernel 4.8. Version-Release number of selected component (if applicable): Fedora 25/kernel 4.8.8 How reproducible: 100% reproducible. Steps to Reproduce: $ udevadm info --export-db | grep iio_device | wc -l 0 # G_MESSAGES_DEBUG=all /usr/sbin/iio-sensor-proxy ** (process:4351): DEBUG: Could not find any supported sensors Actual results: No sensors are detected. Expected results: Sensors should be detected. Additional info: I filed https://github.com/hadess/iio-sensor-proxy/issues/118#issuecomment-262575375 and the maintainer of iio-sensor-proxy said that the applicable kernel driver needs to be enabled or written.
The output of something like WinAudit, as well as the decompiled DSDT[1] should tell you what type of device the accelerometer is. (In reply to Nate Graham from comment #0) > Additional info: > I filed > https://github.com/hadess/iio-sensor-proxy/issues/118#issuecomment-262575375 > and the maintainer of iio-sensor-proxy said that the applicable kernel > driver needs to be enabled or written. You were supposed to check whether one such driver existed before filing a bug here. If a driver doesn't exist upstream, then it's not the Fedora kernel maintainers that are likely to write it (or if they are, all the work would happen upstream first anyway). Anyway, waiting on the 2 pieces of information requested above. [1]: As root: cat /sys/firmware/acpi/tables/DSDT > dsdt.dat then, as a normal user: iasl -d dsdt.dat Attach the dsdt.dsl file here.
Created attachment 1223440 [details] Attaching the requested file
Sorry, I'm a bit new to this. Where/with whom do I check to see if a suitable kernel driver exists? I've attached the requested dsdt.dat file, but I don't have Windows available to run WinAudit. Is there any alternative I can run in Fedora?
(In reply to Nate Graham from comment #3) > I've attached the requested dsdt.dat file, but I don't have Windows > available to run WinAudit. Is there any alternative I can run in Fedora? I don't know anything as comprehensive for Linux, no. In any case, if we were missing, say, a bus driver, then we wouldn't be able to enumerate those devices, one of which could be the accelerometer. Short of you, or another owner of an HP Spectre x360, running that tool, I don't have anything else to go on and help.
Created attachment 1234554 [details] The requested WinAudit info This is the output of WinAudit, run on an identical machine, helpfully provided by another owner.
Looks like support landed in 4.9: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=17e2adf2a7d755e17fa75495d29cb98d553d4a66