This page documents common bugs in Fedora 31 and, if available, fixes or workarounds for these problems. If you find your problem in this page, please do not file a bug for it, unless otherwise instructed. Where appropriate, a reference to the current bug(s) in Bugzilla is included.
Release Notes
Read the Fedora 31 release announcement and the Fedora 31 release notes for specific information about changes in Fedora 31 and other general information.
My bug is not listed
Not every bug is listed in this page, but Bugzilla should be a comprehensive database of known bugs. This page is a sampling of the bugs most commonly discussed on our mailing lists and forums.
To see if your bug has already been reported, you can search Bugzilla. If it has not yet been reported, we encourage you to do so to help improve Fedora for yourself and others. A guide to Bugs and feature requests has been prepared to assist you.
If you believe an already-reported bug report should be added to this page because it is commonly encountered, you can:
- Add it yourself, if you have wiki access. Common bugs instructions provides guidance on how to add an entry to the page correctly, but the most important thing is to make sure that the bug is listed - don't worry if you don't get the format quite right, we can clean it up later.
- Or, add the CommonBugs keyword to the bug report. Someone from the QA team will then inspect the issue to determine whether the bug should be listed as a common bug. To expedite your request, please add a comment to the bug that includes
- a summary of the problem
- any known workarounds
- an assessment on the impact to Fedora users
For reference, you can query Bugzilla for bugs tagged CommonBugs:
- CommonBugs? (bugs with CommonBugs keyword, but do not yet have a link to this page)
- CommonBugs+(bugs with CommonBugs keyword and contain a link to this page)
Core system issues
Installation issues
Fedora Media Writer does not work on macOS 10.15 (Catalina)
Fedora Media Writer, the official tool for writing Fedora images to USB stick, is reported to not work with macOS 10.15 (Catalina). It appears to work, but does not actually write anything to the USB stick. There is no known workaround to make FMW work in this scenario at present. Alternative options include running FMW on a Linux or Windows system if you have access to one, using the command-line dd utility instead, or using a third-party tool. One user in the issue thread recommends a tool called Etcher: Fedora has not currently officially reviewed this tool and so cannot officially recommend it, but a cursory review of the tool description suggests it at least ought to write Fedora images correctly.
Workstation (GNOME) issues
Users settings applet hangs if incorrect existing password is entered when changing user password
link to this item - Bugzilla: #1763525
If you enter a user's existing password wrong when attempting to change their password from the Users settings applet in Fedora 31 Workstation, the applet may hang. It should be possible to exit the applet with alt-F4 and try again. If you enter the existing password correctly, things should work fine.
QtWebEngine-based apps cannot be made full-screen under Wayland
link to this item - Bugzilla: #1759490
It has been reported that QtWebEngine-based applications - including Falkon and Qutebrowser - cannot be made full-screen under Wayland (so this is an issue that mainly affects Fedora Workstation, as Wayland is the default compositor there). Under X11 this works fine. We are still working to determine the cause and solution for this issue; if it is a major problem for you, you can run GNOME on X11 instead of Wayland, it is a choice available at the login screen.
Pango no longer supports bitmap format fonts
link to this item - Bugzilla: #1753295
Pango 1.44 no longer supports bitmap fonts in PCF or BDF format.
A workaround is to use the fonttosfnt tool to convert them to OpenType format: see BitmapFontConversion for more details.
link to this item - Bugzilla: #1805265
In Fedora Workstation, the shutdown/reboot menu is intended to alert you if system updates are prepared for installation and offer you the option of installing them before shutting down. This worked as intended in Fedora 28 and earlier. However, in Fedora 29 and later, a change to suspend PackageKit when it is not needed broke this feature: the notification almost never appears in the shutdown/reboot menu (it will only pop up if you happen to try and shut down very shortly after actively using PackageKit somehow).
There is no known practical workaround for this issue at present.
KDE issues
Discover app may trigger errors if attempting multiple operations on a package in a single run
link to this item - Bugzilla: #1762291
The Discover package management application in KDE appears not to refresh its internal accounting of package states after performing an install or remove operation. So, for instance, if you run it and install a package, the install will work fine, but on some level that instance of Discover still doesn't 'know' the package is installed. If you then attempt to uninstall it, you may get a "Package not found" error.
It seems some actions within Discover do trigger a refresh of this state, so this issue is somewhat unpredictable. But if you encounter unexpected errors when doing something like this, we recommend you exit the application and run it again. This should avoid such issues.
Upgrade issues
link to this item - Bugzilla: #1764169
An update has been released to address this problem. After you update your system in your usual way, and possibly reboot, you should no longer be affected by it.
In certain cases when upgrading to Fedora 31, DNF complained about "incorrect checksums" and did not perform the upgrade. The error was misleading, the root cause was that DNF due to a bug wanted to reinstall packages which were not downloaded during the download phase. For those missing packages DNF reported "incorrect checksums" errors. This problem was only seen related to some third party repositories, but was most likely a generic issue that can affect even packages from Fedora repositories.
This problem didn't break the upgraded system in any way, it simply didn't start the upgrade process and the system rebooted back into original (un-upgraded) Fedora system.
This problem was fixed, see the colored box with a link to that update. Make sure you have at least that DNF (and related libraries) version before attempting system upgrade.
Upgrading Fedora Silverblue or Fedora IoT from an older Fedora release to Fedora 31 might result in duplicate GRUB entries at boot time. However, the default boot entry is still the correct one. Hence, updating and rebooting should still work as usual. This is due to both GRUB2 (via blscfg) and ostree-grub2 (via /etc/grub.d/15_ostree) emitting menu entries. However, we cannot yet turn off the latter in favour of pure BLS booting due to a combination of: (1) older systems may have a GRUB2 too old to understand BLS, (2) OSTree systems do not yet have a mechanism for updating bootloader software, and (3) there is no easy way to detect the currently installed GRUB2 version.
We're working on ways to address this. In the meantime, one way to remove the duplicate menu entries is to disable blscfg support by setting GRUB_ENABLE_BLSCFG=false in /etc/default/grub. This will take effect on the next update and reboot.
For more information, see https://github.com/ostreedev/ostree/pull/1929 and https://discussion.fedoraproject.org/t/boot-entries-gone-after-upgrade/8026.
Update: On newer Fedora releases, users can now also migrate to BLS (as was done in Fedora as part of https://fedoraproject.org/wiki/Changes/BootLoaderSpecByDefault) by running grub2-switch-to-blscfg. Note that this only works on EFI. On BIOS, you can follow the steps in https://github.com/ostreedev/ostree/pull/2044#issuecomment-608316436.
Podman fails to run containers on upgraded systems (due to use of runc runtime with cgroups v2)
link to this item - Bugzilla: #1752040
If you upgrade a Fedora system where you have already installed and used podman to Fedora 31, after the upgrade it is likely podman will fail to launch containers any more. This is because on first use of podman in earlier Fedora releases a configuration file is written to the user's home directory which specifies that the runc runtime should be used to launch containers, but at present, runc does not work with version 2 of the kernel cgroups feature, as included in Fedora 31.
To resolve this issue, if you have not modified it in any other way, you can simply remove the affected file, with rm ~/.config/containers/libpod.conf. If you have modified the file in some other way, you can edit it and change the runtime setting from runc to crun.
Eclipse module has been reset to avoid shadowing non-modular rpms
link to this item - Bugzilla: #1780827
For a brief period, the eclipse module was a "default" module in Fedora 31 (meaning that a dnf install <package> command would enable the module and install the modular version of <package> if <package> is part of the module). Such "shadowing" of non-modular packages is expected with modules, but the eclipse module was shadowing more packages than it should, so the module was made "non-default" again. Nevertheless, users who installed or upgraded affected packages in this window have the module persistently enabled and are not getting the non-modular versions of those rpms, even if those now have a higher version.
To resolve this issue, a scriptlet was added to the fedora-release package that performs a one time dnf module reset eclipse operation. This solves the issue of unexpected shadowing of packages, but at the same time creates a problem for users who have the eclipse module enabled on purpose. They need to once re-enable the module if desired.
Summary: fedora-release performs a one-time disablement of eclipse module. Users who wish to have the module enabled should execute dnf module enable eclipse:latest once more.
ARM issues
Nvidia Jetson TK1 requires nouveau driver to be blacklisted for graphical output
Due to an issue with Nouveau on the Nvidia Jetson TK1 you will need to blacklist the driver. To do this before booting the system, mount the installation media and edit the file /etc/extlinux.conf, adding rd.driver.blacklist=nouveau to the kernel parameters (line that begins with append).
link to this item - Bugzilla: #1768636
To use the Etnaviv driver on imx.6 based boards you will need to make a small adjustment to the kernel parameters to fix CMA memory allocation issues. To do this before booting the system, mount the installation media and edit the file /etc/extlinux.conf, changing cma=256MB to cma=256M@2G. This was fixed in a recent upstream kernel commit, so the fix should appear in a future Fedora kernel update.
Low memory systems
Systems with low memory (less than 512MB) may run out of memory when running some applications- most notably dnf. To workaround this, stop and disable the zram service:
sudo systemctl disable --now zram-swap
It is recommended you then create a swap file to use in its place.
AArch64 issues
Some AArch64 systems may boot with iommu/arm-smmu errors using Device Tree
link to this item - Bugzilla: #1724276
Some Enterprise AArch64 systems may boot with iommu/arm-smmu errors when booting using device tree (the fedora default). It is recommended to boot these systems using ACPI by adding acpi=force to the kernel parameters. If you would like to use device tree you can work around this issue by adding arm-smmu.disable_bypass=n. To do one of these permanently, you can use one of the following:
sudo grubby --update-kernel=ALL --args="acpi=force" sudo grubby --update-kernel=ALL --args="arm-smmu.disable_bypass=n"
This should be fixed in a system firmware update.
Other software issues
Docker package no longer available and will not run by default (due to switch to cgroups v2)
link to this item - Bugzilla: #1757078
The Docker package has been removed from Fedora 31. It has been replaced by the upstream package moby-engine, which includes the Docker CLI as well as the Docker Engine. However, we recommend instead that you use 
podman
sudo grubby --update-kernel=ALL --args="systemd.unified_cgroup_hierarchy=0"
Trying to scroll with mouse wheel in inactive Firefox window results in back/forward instead
link to this item - Bugzilla: #1650051
When using the Wayland backend for Firefox, a known issue in GTK+ means that the Alt modifier key is still considered active in Firefox after you switch away from the window using the Alt+Tab ⇆ shortcut. So if you then move the mouse over the inactive Firefox window (but do not click to activate it) and scroll the wheel, Firefox will treat this as holding down the Alt key and scrolling the wheel. By default, in Firefox, this is mapped to going 'back' and 'forward' in the page history, so instead of the page scrolling, you will rapidly move backwards or forwards through your page history.
If you find yourself frequently triggering this unwanted behaviour, you can work around it by navigating to about:config in Firefox and setting the value mousewheel.with_alt.action to 1 instead of 2. 1 sets the action when holding Alt and scrolling the wheel to be the same as when scrolling the wheel normally (it will scroll the page).
Resolved issues
Encrypted system does not resume from hibernation correctly if you wait more than 90 seconds to input encryption password
link to this item - Bugzilla: #1705522
An update has been released to address this problem. After you update your system in your usual way, and possibly reboot, you should no longer be affected by it.
If you installed Fedora 31 with the system partitions encrypted, and then used the hibernate (suspend-to-disk) feature, you would be prompted to input the encryption password during system resume. If you waited longer than 90 seconds before inputting the password, the system would not resume from hibernation correctly - instead a fresh boot was performed and your previous state was lost.