https://bugzilla.kernel.org/show_bug.cgi?id=218578 Bug ID: 218578 Summary: MXC6655 accelerometer not working with MXC4005 driver Product: Drivers Version: 2.5 Hardware: Intel OS: Linux Status: NEW Severity: normal Priority: P3 Component: IIO Assignee: drivers_iio@xxxxxxxxxxxxxxxxxxxxxx Reporter: kernelbugzilla@xxxxxxxxxxxxxxxx Regression: No Created attachment 305970 --> https://bugzilla.kernel.org/attachment.cgi?id=305970&action=edit Output from udevadm info -n /dev/iio\:device0 && also some samples of accelerometer raw values I see in /sys/bus/iio/devices/iio:device:0/. Hello, I recently bought two Chuwi tablets which contain MXC6655 accelerometers. The accelerometers work in Windows 11 and the tablet rotates as expected in Windows, but upon installing Linux the tablet auto rotation was not working. The Chuwi tablets are: - UBook X Pro 2023 - UBook X 2023 This does not appear to be distro specific, as I am seeing the same behavior on both: - Linux Mint 21.3, with kernel 5.15.0-91-generic - Fedora 39 Workstation, with kernel 6.5.6-300.fc39.x86_64 I came across this thread indicating that support was added for this in 2020 via the MXC4005 driver: https://www.spinics.net/lists/linux-iio/msg53171.html This seems to be double confirmed by another issue I found here on this bug tracker: https://bugzilla.kernel.org/show_bug.cgi?id=206703 Unfortunately in my case, I see the MXC4005 driver is in fact loaded and running, however it appears the raw data is not changing. When looking at the output from iio-sensor-proxy with "monitor-sensor", the orientation always reports "left-up". I tried a test where I watched a cat of all of the files in /sys/bus/iio/devices/iio:device0/, and I never see the raw data changing when the tablet is rotated. I'm attaching the values I see from the raw data in the text file. Interestingly, Fedora reports different raw values, but iio-sensor-proxy still says orientation is left-up with these values. In both cases, the values don't change when the tablet is rotated. The output of "udevadm info -n /dev/iio\:device0" is attached too. lsmod reports that the mxc4005 driver is loaded, along with industrialio and industrialio_triggered_buffer. Unloading the mxc4005 module with rmmod causes it to disappear from iio-sensor-proxy as expected, but otherwise unloading and reloading the driver seems to have no effect on the symptoms. If there is any further information I can gather which will be helpful, or any testing I can help with, please let me know. Thanks! -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.
