I am using a Cherry Trail convertible tablet (Acer One 10). On a fresh install of Fedora 32, the touchscreen functions normally; however, after upgrading to the latest kernel the touchscreen does not generate response at all.
Details: I can still manually boot into kernel version 5.6.6-300.fc32.x86_64, and the touchscreen continues to work normally. When I boot into kernel version 5.8.4-200.fc32.x86_64 the touchscreen does not work at all; I can still interact with the system using the removable keyboard and trackpad. I have not had the opportunity to try any of the intervening kernels that might have been released between these two.
For the short term, I could pin that older kernel version to keep the touchscreen working, but I’m afraid it won’t be viable over the longer term.
Were there any known changes which might explain the loss of the touchscreen in the newer kernel? Are there any strategies I might take to restore its operation?
Thank you for the advice; I wasn’t previously aware of where to look for access to older released kernels to try them out, so previously I had only tried the 5.6.6 kernel that came with the install image, and the 5.8.4 kernel that was immediately offered to me the first time I checked for updates.
After manually installing the 5.7.17 kernel, I can confirm that the problem was also present there. I will try going back to try some other kernels that might have been released between 5.6.6 and 5.7.17 to see if I can figure out when the problem first started.
I will report back as I have opportunities to perform more tests.
Tested this out on a Dell Inspiron 7573 2-in-1. I also had issues with the touchscreen not working on 5.8.4-200.fc32.x86_64. I followed florian’s advice to test out 5.8.5 and installed via the instructions given. Rebooted and now the touchscreen works. Confirmed that it did update to 5.8.5.