Limitations

Before you begin proceed, you will first want to determine if this is actually a system issue. If your system boots fine, this is likely an application issue. We recommend you first visit the Focus Support page and search for a topic using the list or the search box. These are almost always more current and correct for your hardware than HOWTOs or forum posts you might find on the web. You should proceed here only if your system does not completely boot or if you are getting warnings about missing dependencies or libraries.

Recovering an installation may be preferable because applications, settings, and other data will not need to be restored. However, like with all OSes, a badly broken system can take hours to recover and still be problematic. While a Clean Install requires recovery of data, it usually takes well under 30 minutes and can solve issues you do not have time to research or understand. For these reasons, we recommend you always keep a clean installation as an alternative and limit the time you dedicate to recovery efforts.

Any system work always has inherent risks. Mistakes happen, and in this context, that can result in data loss. It is important, therefore, to keep your data safe using a backup solution on an external disk. See the Backup Guided Solution to save your data before proceeding if possible.

Fix Your System Using FocusRx

Focus systems have a recovery tool called FocusRx. This can directly resolve many issues:

• Check if the /boot partition is too full and fix it
• Check and remove any xorg.conf file
• Repair broken or incomplete packages
• Update and reinstall key libraries
• Analyze NVIDIA GFX, CUDA, and DL libraries and harmonize so they work
• Fix many third-party repositories and remove duplicates and conflicts
• Update the initial RAM disk

You can run FocusRx as shown below.

• Connect to an Ethernet cable and AC power.
• Reboot the system. If the default kernel does not boot, use the kernel selection screen, Advanced Options to select a different kernel if available.
• If you can boot to a GUI, sign in and run Startup Menu > Kubuntu Focus > FocusRx.
• If you cannot boot to a GUI but instead see a black screen and cursor, press [ctrl][alt][f2] to get a virtual terminal. Sign in as your user and then enter focusrx -f.
• In FocusRx, elect to run package-check when prompted
• If the tool shows your system disk is 100% full, you should remove unneeded files to free at least 10 GB before proceeding.
• Follow the prompts and reboot when finished.

Use a Live USB for Recovery

Please Download the ISO Disk Image and create a bootable, live USB. Then return here to proceed.

Boot using the USB stick as shown below.

• Insert the USB stick in a USB type A port on your Focus.
• Turn on your Focus computer. Once you see the Focus logo, press F2 repeatedly on your keyboard.
• Select Boot Manager from the BIOS options on the screen, using either the touchpad or your cursor keys.
• Select the USB drive from the list of drives to boot.
• Select Start Kubuntu from the boot menu.
• Select Try Kubuntu from the graphical prompt.

Use chroot to Recover a System

1. Use the live USB to boot into the Try Kubuntu mode.

2. If you do NOT have an encrypted drive, skip to step 3. Otherwise, decrypt it now.

3. Mount the partition on /mnt.

If you haven’t yet backed up your data, please do so NOW! See the Take a Snapshot with USB Drive to save your important files to a separate drive. You can find your user data under /mnt/home/. While each subsequent step below is usually safe, each brings additional risk because of unknown system state or human error. Better safe than sorry.

4. Mount /boot and efi paritions.

5. Prepare and use chroot.

6. Once the system has successfully switch to chroot mode, run FocusRx. See the section on FocusRx above for how to run and what this fixes.

See this article for additional details on using chroot

Here are a few more steps you might try if FocusRx does not solve the problem:

• Attempt to fix broken packages using apt by typing sudo apt update && sudo apt full-upgrade (this is also done by FocusRx).
• Use aptitude for ncurses-based graphical package management to install or uninstall packages that may have caused the problem. This interface can be navigated using a keyboard or mouse.

If you are still seeing issues, please write support@kfocus.org.

Disclaimer

We try hard to provide a useful solution validated by professionals. However, we cannot anticipate every situation, and therefore cannot guarantee this procedure will work for your needs. Always backup your data and test the solution to determine the correct procedure for you.

THIS SOLUTION IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS IS” AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOLUTION, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.