Created attachment 1730486 [details]
Kernel logs for 5.9.8-200 boot-up
1. Please describe the problem:
After kernel 5.9 was rolled out to Fedora Silverblue 33 a few days ago I started experiencing desktop freezes. Intermittent, sometimes it would hang for just a few minutes, other times much longer, and then become usable again. I don’t see any obvious error messages reported when running journalctl.
I downgraded the kernel to see if I could isolate the problem following [these instructions](https://discussion.fedoraproject.org/t/downgrading-kernel-on-silverblue/1928), and I am now typing this on the following version, *without freezing issues*:
Version: 33.20201117.0 (2020-11-17T00:48:12Z)
GPGSignature: Valid signature by 963A2BEB02009608FE67EA4249FD77499570FF31
RemovedBasePackages: firefox 82.0.3-1.fc33
ReplacedBasePackages: kernel-core kernel-modules-extra kernel-devel kernel-modules kernel 5.9.8-200.fc33 -> 5.8.18-300.fc33, kernel-headers 5.9.7-200.fc33 -> 5.8.18-300.fc33
LayeredPackages: crit elementary-videos emacs fedora-workstation-repositories
ifuse libimobiledevice-devel libimobiledevice-utils
libplist-python syncthing virt-manager
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
It worked before the roll-out of 5.9.8-200.fc33, then the release number was 5.8.18-300.fc33.
4. Can you reproduce this issue? If so, please provide the steps to reproduce
the issue below:
It happens whenever I am logged into the desktop (Gnome on Wayland). I have not tried Gnome on X11, though. I have not seen any special pattern regarding which applications I run. I run a mix of RPM based and flatpak applications (which is the preferred way for desktop apps in Silverblue).
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``:
Well, these instructions won't work as-is in Silverblue ;-) But I know what to do, so I'll post update after trying it out :-)
6. Are you running any modules that not shipped with directly Fedora's kernel?:
No special modules.
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.
I had to re-purpose the external monitor to be used in the home-office setup, so I no longer have an external monitor connected to my laptop.
So: while preparing the ostree deploys for running the rawhide kernel, I booted the 5.9 kernel again - and the freezes are now gone!
Seems like the freezes were related to using the external monitor with the new 5.9 kernel.
I am afraid that I will have very limited/sporadic opportunity to try out other kernels on my laptop with external monitor, so I suggest you put this bug report on the back-burner for now.
I got some test-time with the monitor again around 5.9.11 roll-out, and did not experience any issues. Later, I started using another external monitor, also without problems.
I am not familiar with the terms - is NOTABUG the right one when closing this? It seems like it got fixed in a later point release, however I didn't isolate it to anything specific.