From Fedora Project Wiki

Kernel 6.18 Test Week
Date 2025-12-14 to 2025-12-20
Time all week
Website QA/Test Days
Matrix #kernel:fedoraproject.org(other clients|?)
Mailing list test


Can't make the date?
If you come to this page after the test day is completed, your testing is still valuable, and you can use the information on this page to test, file any bugs you find, and add your results to the results section. If this page is more than a month old when you arrive here, please check the current schedule and see if a similar but more recent Test Day is planned or has already happened.

What to test?[edit]

This Test Day will focus on the 6.18 Linux kernel. The primary aim is to test it with Fedora 43 and also Fedora 42.

Who's available[edit]

The following cast of characters will be available testing, workarounds, bug fixes, and general discussion:

You can chat with us on Matrix. See the infobox on top of the page to learn where to join.

Prerequisite for Test Day[edit]

  • A virtual machine or a bare metal machine
  • An installation of Fedora 43/42 (any Edition or Spin). Make sure to fully update your system.
    • If installing a fresh system, install using the test day F43 image
    • If using an existing system, the 6.18 kernel from koji build (see below, recommended for Secure Boot users) or kernel-stabilization copr
    • Make sure you have no important data on that system. Things might go wrong -- don't do this on your production machine!
  • Enough free space on storage.

Kernel from a Koji build instructions[edit]

Install koji command-line tool[edit]

RPM-based systems (Workstation, Server, etc) 

sudo dnf install koji

Atomic systems (Silverblue, Kinoite, Sericea, Onyx, CoreOS, IoT, etc)

Install Koji in a toolbox: 

toolbox create
toolbox enter
sudo dnf install koji

Or directly on the host: 

rpm-ostree install koji

And reboot.

List available kernel builds[edit]

You can list available kernel builds with: 

koji list-builds --package=kernel --after="2025-12-12" --pattern "kernel-6.18*"

Download kernel[edit]

Download the RPMs for the 6.18 kernel build you want to test to a test directory, for example kernel-6.18.1-200.fc43: 

mkdir -p ~/work/kernel_test
cd ~/work/kernel_test
koji download-build --arch=$(uname -m) kernel-6.18.1-200.fc43

Install kernel[edit]

RPM-based systems (Workstation, Server, etc)

Update your kernel: 

sudo dnf update kernel-*.rpm

And reboot.

Atomic systems (Silverblue, Kinoite, Sericea, Onyx, CoreOS, IoT, etc)

Override the kernel: 

rpm-ostree override replace kernel-modules-core-6*.rpm kernel-core-6*.rpm kernel-modules-6*.rpm kernel-6*.rpm kernel-modules-extra-6*.rpm

And reboot.

How to test?[edit]

  1. Follow the instructions in QA:Testcase kernel regression. For users running the test day image, the tests are pre-installed in /home/liveuser/kernel-tests/.
  2. Visit the result page and enter your result in the 'Regression' column by clicking Enter result.
  3. If there are any other result columns, click on the column title links to see the tests that need to be run: most column titles are links to a specific test case. Follow the instructions there, then enter your results by clicking the Enter result button for the test.
  4. While the results from the regression tests are interesting, we are also interested in your overall experience with the new kernels. You can put those under QA:Testcase Exploratory Testing.

Reporting bugs[edit]

Perhaps you've found an already-reported bug. Please look at:

All new bugs should be reported to Bugzilla, probably against kernel component.

We really need bug reports!
Please note that just mentioning your problem into the comments section on the results page is not very helpful. Very often those problems only happen in specific circumstances, or with specific steps taken. We need the logs and screenshots, and we need to be able to ask you followup questions. Please file bug reports, it's much more useful than a short comment. Thank you!

When filing the bug, it's very helpful to include:

  • exact steps you've performed (and whether you can reproduce it again)
  • screenshots or videos, if applicable
  • system journal (log), which you can retrieve by journalctl -b > journal.txt
  • all output in a terminal, if started from a terminal
  • your system description

If you are unsure about exactly how to file the report or what other information to include, just ask us.

Please make sure to link to the bug when submitting your test result, thanks!

After testing: Revert override on atomic systems[edit]

If you are on an atomic system (Silverblue, Kinoite, Sericea, Onyx, CoreOS, IoT, etc), you should revert the override and use the stable kernels again. Run the following command to revert it back: 

rpm-ostree override reset kernel-modules kernel-modules-extra kernel-core kernel kernel-modules-core

And reboot.

Test Results[edit]

Test results were exported here. The test day is over. See How to test? section for information how to submit results and see the live results.

Regression Test[edit]

User Your hardware details Regression Exploratory Testing References
Adrien D Fedora Linux 43 + BCM2711 AMR64 + 4GB RAM
Pass pass
[1]
  1. ↑ All is good : https://kerneltest.fedoraproject.org/logs/75023
Adrien D Fedora Linux 43 Workstation + AMD Ryzen 5 2600X + AMD Radeon RX 7600 + 32GB RAM
Pass pass
[1]
Pass pass
[2]
Pass pass
[3]
  1. ↑ All is good ! https://kerneltest.fedoraproject.org/logs/75018
  2. ↑ RPMFusion 3rd party modules : VirtualBox OK
  3. ↑ Gaming, zram, virtualization OK
Bojan Smojver ThinkPad T450s, MeLE 3C: 6.18.2-00.fc43.x86_64
Pass pass
[1]
  1. ↑ Works for general use
Brandon Nielsen HP Compaq 8510w Intel T9300 AMD RV630 BIOS
Pass pass
bretth KVM - 6.18.1-200.fc43
Pass pass
[1]
  1. ↑ default & performance tests pass
bretth KVM - 6.18.2-00.fc43.x86_64
Pass pass
[1]
  1. ↑ default & performance tests pass
Christopher Boni Lenovo ThinkPad E14 Gen 4 (Intel)
Pass pass
clnetbox Fedora Linux 43 | Intel-i7-10875H | NVIDIA RTX 2070
Pass pass
[1]
Pass pass
[2]
Pass pass
[3]
Pass pass
[4]
  1. ↑ kernel-6.18.1-200.fc43.x86_64 | mesa-25.2.7-3.fc43.x86_64
  2. ↑ kernel-6.18.2-00.fc43.x86_64 | mesa-25.2.7-3.fc43.x86_64
  3. ↑ kernel-6.18.1-200.fc43.x86_64 | nvidia-580.119.02-x86_64
  4. ↑ kernel-6.18.2-00.fc43.x86_64 | nvidia-590.48.01-x86_64
Daniel Leong Fedora Linux 43, Gigabyte B650 Gaming X AX v1 rev 1.2, AMD 7600, AMD RX 6700 XT
Pass pass
[1]
Pass pass
[2]
  1. ↑ Regression all fine - https://kerneltest.fedoraproject.org/logs/75072
  2. ↑ 6.18 fixes AMD Radeon RX 6700 XT failing to suspend/resume - https://gitlab.freedesktop.org/drm/amd/-/issues/4649
Derek Enz Thinkpad T14 AMD F43 KDE Boxes VM
Pass pass
Dirk Köhler Lenovo ThinkPad T480s, Fedora Linux 43, Intel i7-8650U × 8, Intel UHD Graphics 620
Pass pass
[1]
  1. ↑ Kernel 6.18.1-200.fc43.x86_64
Eugene Mah Asus X75A laptop, Intel Core i5-3230M, Intel HD 4000 graphics, 6.18.2-00.f43
Pass pass
[1]
  1. ↑ Tests pass. Should this be -200 instead of -00?
Eugene Mah Asus X75A laptop, Intel Core i5-3230M, Intel HD 4000 graphics, 8GB RAM
Pass pass
Eugene Mah Dell Precision Tower 3620 Xeon E3-1240, nvidia Quadro P1000 GPU
Pass pass
Eugene Mah Dell Precision Tower 3620 Xeon E3-1240, nvidia Quadro P1000 GPU, 6.18.2-00.fc43
Pass pass
Eugene Mah Intel Xeon W3690, nVidia GTX 1660Ti
Warning warn
[1]
  1. ↑ kmod-nvidia 580.105.08 driver failed to build on my system. Bug 7365 filed to bugzilla.rpmfusion.org
Eugene Mah Intel Xeon W3690, nVidia GTX 1660Ti, F43 kernel 6.18.1-200
Pass pass
[1]
  1. ↑ akmod-nvidia 580.119.02 builds and works fine
Eugene Mah Intel Xeon W3690, nVidia GTX 1660Ti, F43 kernel 6.18.2-00.f43
Pass pass
g6avk kernel-6.18.1-200.fc43.x86_64 > Work Station, Asus prime mobo - Ryzen5 5600g/iGPU, 400 Series Chipset, 32 GiB RAM. (UEFI) Secure boot, 2x SSD's > RAID1 (ext4)
Pass pass
[1]
  1. ↑ Default tests pass OK
g6avk kernel-6.18.2-200.fc43.x86_64 > Work Station, Asus prime mobo - Ryzen5 5600g/iGPU, 400 Series Chipset, 32 GiB RAM. (UEFI) Secure boot, 2x SSD's > RAID1 (ext4)
Pass pass
[1]
  1. ↑ Default tests pass OK
Geraldo S. Simião Kutz F43 KDE on ACER Aspire A515-45 AMD Ryzen 7 5700U with Radeon Graphics + MEDIATEK MT7921 802.11ax
Pass pass
[1]
  1. ↑ Kernel 6.18.1-200 - failed cachedrop first run but PASSED the second and third run of cachedrop and all other tests
itrymybest80 kernel-6.18.1-200.fc43.x86_64
Pass pass
Jan Siml Thinkpad X13 Gen 4, AMD Ryzen 7 PRO 7840U, Radeon 780M Graphics, 32 GB RAM
Pass pass
Kurt Lindberg Fedora Silverblue 43 kernel 6.18.1-200.fc43.x86_64, Lenovo ThinkCentre M910s, Intel Core i7-770 x 8, Intel HD Graphics 630 (KBL GT2)
Pass pass
[1]
  1. ↑ Default tests pass when everything is installed directly on the host in Fedora Silverblue 43. ./default/cachedrop fails when tests are run within a Fedora 43 toolbox container
Kurt Lindberg Fedora Silverblue 43 kernel 6.18.2-00.fc43.x86_64, Lenovo ThinkCentre M910s, Intel Core i7-770 x 8, Intel HD Graphics 630 (KBL GT2)
Pass pass
[1]
  1. ↑ Default test suite passed
Luna Jernberg Dell Latitude 7390 (gnome-boxes)
Pass pass
[1]
Pass pass
[2]
  1. ↑ 6.18.2
  2. ↑ installed from Koji on latest respin image: https://dl.fedoraproject.org/pub/alt/live-respins/F43-WORK-x86_64-LIVE-20251201.iso
Luna Jernberg Dell XPS 13 9380
Pass pass
[1]
  1. ↑ using jforbes testweek iso image from a USB stick
Luya Tshimbalanga Fedora Linux 43 Design Suite Lab, Dell Inspiron 14 7745 convertible
Pass pass
[1]
Pass pass
  1. ↑ Default and performance test passed
Mark K i7-1165G7 + NVIDIA 580.119.02
Pass pass
Neeraj Kumar Linux localhost-live 6.18.1-200.fc43.x86_64
Fail fail
[1]
  1. ↑ Vulnerability status: /sys/devices/system/cpu/vulnerabilities/gather_data_sampling:Not affected /sys/devices/system/cpu/vulnerabilities/ghostwrite:Not affected /sys/devices/system/cpu/vulnerabilities/indirect_target_selection:Mitigation: Aligned branch/return thunks /sys/devices/system/cpu/vulnerabilities/itlb_multihit:Not affected /sys/devices/system/cpu/vulnerabilities/l1tf:Not affected /sys/devices/system/cpu/vulnerabilities/mds:Not affected /sys/devices/system/cpu/vulnerabilities/meltdown:Not affected /sys/devices/system/cpu/vulnerabilities/mmio_stale_data:Mitigation: Clear CPU buffers; SMT Host state unknown /sys/devices/system/cpu/vulnerabilities/old_microcode:Not affected /sys/devices/system/cpu/vulnerabilities/reg_file_data_sampling:Not affected /sys/devices/system/cpu/vulnerabilities/retbleed:Mitigation: Enhanced IBRS /sys/devices/system/cpu/vulnerabilities/spec_rstack_overflow:Not affected /sys/devices/system/cpu/vulnerabilities/spec_store_bypass:Mitigation: Speculative Store Bypass disabled via prctl /sys/devices/system/cpu/vulnerabilities/spectre_v1:Mitigation: usercopy/swapgs barriers and __user pointer sanitization /sys/devices/system/cpu/vulnerabilities/spectre_v2:Mitigation: Enhanced / Automatic IBRS; IBPB: conditional; PBRSB-eIBRS: SW sequence; BHI: SW loop, KVM: SW loop /sys/devices/system/cpu/vulnerabilities/srbds:Unknown: Dependent on hypervisor status /sys/devices/system/cpu/vulnerabilities/tsa:Not affected /sys/devices/system/cpu/vulnerabilities/tsx_async_abort:Not affected /sys/devices/system/cpu/vulnerabilities/vmscape:Not affected
Nemric Slimbook Fedora 2 14" 32G Ram / 512G SSD : 6.18.2-00.fc43.x86_64
Pass pass
Nemric Slimbook Fedora 2 14" 32G Ram / 512G SSD : https://linux-hardware.org/?probe=d0c296939d
Pass pass
nixuser kernel-6.18.1-200.fc43.x86_64 on Dell Precision T5610 2 x Intel(R) Xeon(R) CPU E5-2603 v2 @ 1.80GHz (8 cores total) NVIDIA Corporation GK104 [GeForce GTX 760] (rev a1)
Pass pass
[1]
  1. ↑ Regression tests pass, servr side stuff working, httpd, samba, XRDP, ssh
nixuser kernel-6.18.1-200.fc43.x86_64 on Intel NUC NUC13ANHi7 (NUC13ANHi7000) (rev N11225-207) 1 x 13th Gen Intel(R) Core(TM) i7-1360P Intel Corporation Raptor Lake-P [Iris Xe Graphics] (rev 04)
Pass pass
[1]
  1. ↑ Regression tests pass, server side stuff like httpd, samba, ssh, cockpit, XRDP all working as expected.
nixuser kernel-6.18.2-00.fc43.x86_64 as VirtualBox guest on Fedora 43
Pass pass
[1]
  1. ↑ Working as expected.
nixuser kernel-6.18.2-00.fc43.x86_64 on Dell Precision T5610 2 x Intel(R) Xeon(R) CPU E5-2603 v2 @ 1.80GHz (8 cores total) NVIDIA Corporation GK104 [GeForce GTX 760] (rev a1)
Pass pass
[1]
  1. ↑ Tests passing, working fine on the LAN, server side stuff all working fine.
Paolo Junior Angeloni ThinkPad T440, i5-4200U, 8GB, iGPU
Pass pass
[1]
Pass pass
[2]
  1. ↑ iso: Fedora-kerneltest.x86_64-43.iso, test logs: https://kerneltest.fedoraproject.org/logs/75095
  2. ↑ Wireshark tests: https://fedoraproject.org/wiki/QA:Testcase_Wireshark
py0xc3 AMD Ryzen 7 PRO 6850U, internal graphics, no external modules, F43 KDE (SELinux confined user accounts), 6.18.1-200.fc43.x86_64
Pass pass
[1]
  1. ↑ Works fine with average activities (firefox, thunderbird, dolphin, konsole, watching movies in browser, superTuxKart :), cat /proc/sys/kernel/tainted = 0
Zhenbo Endle Li Fedora 43 Silverblue; AMD Ryzen 9 7950X3D; AMD Radeon RX 7600 XT
Pass pass
[1]
  1. ↑ WiFi works well MEDIATEK Corp. MT7922 802.11ax; Kernel driver in use: mt7921e;
Łukasz Wojniłowicz Intel(R) WiFi Link 5100 AGN
Fail fail
[1][2]
  1. ↑ Intel(R) WiFi Link 5100 AGN not loading firmware
  2. ↑ https://bugzilla.redhat.com/show_bug.cgi?id=2407021
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