https://bugzilla.kernel.org/show_bug.cgi?id=218578 --- Comment #3 from Kirk Schnable (kernelbugzilla@xxxxxxxxxxxxxxxx) --- Hello Jonathan, Thanks for your response, and I have done some further testing today which has led me to some interesting conclusions. I have, as you requested, extracted the DSDT information relevant to the accelerometer and attached it. I found 6 devices containing the word "Accelerometer" so I pulled the details of all of them, but I think the first one, ACC0, is the relevant one since it mentions the MXC6655 model number. My further testing today has led me to conclude that this problem is more "intermittent" than I'd first believed. It almost led me to incorrectly conclude that I'd been mistaken about the whole thing in fact. I made another post elsewhere and connected with another user of a similar Chuwi tablet device who says their accelerometer is working reliably on Fedora 39 (after a workaround to correct the fact that the orientation is 90 degrees off). They encouraged me to try it from the live environment, which I did not expect to make any difference, however it actually worked exactly as he had described. For the first time, I saw actual updates to the raw data, and the screen was actually rotating (albeit, incorrectly). This prompted me to perform another fresh install of Fedora. To my shock, the fresh install worked at first boot too, then I started to try to fix the 90 degree orientation issue. I created a file in /etc/udev/hwdb.d/ with some suggested settings and rebooted. After that, the accelerometer no longer worked. So, I reverted the change and rebooted again. Still no accelerometer readings anymore. Thinking that maybe I'd broken that install somehow (even though I reverted all the changes), I did another fresh install. This fresh install worked too until I rebooted the system. I did nothing else but reboot the system. Totally broken, even several reboots later. I tried running DNF updates on this install (over 600 packages needing update), and rebooted again. Still no accelerometer. An update clearly didn't break it but an update also didn't fix it. While attempting to begin a third fresh install to try to reproduce this and see if this was a pattern, I performed the test again from the live environment and got no accelerometer readings. This is the exact same USB I installed from earlier that worked several times this morning. Something is very strange. I would almost believe it was a faulty accelerometer if it weren't for the fact that I used this tablet for 3 hours today in Windows 11 and experienced no issues with the screen rotation. I will say this much, I have yet to see the problem "go away" on an install once it starts. The installs that work once and then break never start working again. The live environment has been the most likely to work, but I have now seen it not work. I dumped the ACPI data for you from a live session of Fedora 39 when the accelerometer was not working. Hopefully this data is helpful. I am not knowledgeable enough about how these ACPI components function under the hood, but it seems like the issue is less an issue of "the accelerometer never works" and more of an issue of "the accelerometer only works sometimes". Thanks! Kirk -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.
