Created attachment 1839371 [details]
Elided journalctl logs
1. Please describe the problem:
When booting Fedora 35 with the default kernel none of my USB devices are recognized, including a Logitech mouse and an external Seagate drive.
2. What is the Version-Release number of the kernel:
3. Did it work previously in Fedora? If so, what kernel version did the issue
*first* appear? Old kernels are available for download at
Worked in Fedora 34 up to the most recent patch. In Fedora 35, the USB devices work after downgrading to 5.14.10-300.fc35. I also found this similar issue that suggested a downgrade might work: https://bbs.archlinux.org/viewtopic.php?pid=2000112
4. Can you reproduce this issue? If so, please provide the steps to reproduce
the issue below:
Yes, with 5.14.14 and 5.14.15 (from updates-testing).
5. Does this problem occur with the latest Rawhide kernel? To install the
Rawhide kernel, run ``sudo dnf install fedora-repos-rawhide`` followed by
``sudo dnf update --enablerepo=rawhide kernel``:
6. Are you running any modules that not shipped with directly Fedora's kernel?:
Can reproduce without them.
7. Please attach the kernel logs. You can get the complete kernel log
for a boot with ``journalctl --no-hostname -k > dmesg.txt``. If the
issue occurred on a previous boot, use the journalctl ``-b`` flag.
Hmm, ok, so this is a regression in 5.14.14 and newer which is most likely caused by:
I guess some XHCI controllers don't like 32 bit writes to that register?
Note the commit which I guessed was causing this was wrong, now we know which commits really are the culprit, see:
We know which patches in 5.14.14 are causing this and they will be reverted for the next 5.14.y release, for now please stay with a kernel < 5.14.14 to work around this.
*** This bug has been marked as a duplicate of bug 2019788 ***