---
title: 'Post Install'
url: 'https://paulmoffat.net/ref/computer/software/os/linux/dist/arch/help/issues/postinstall'
markdown: 'https://paulmoffat.net/ref/computer/software/os/linux/dist/arch/help/issues/postinstall.md'
date: '2026-10-23'
description: "Arch Linux Post Installation Issues These issues include software that isn't specific to Arch Linux but provides solutions assuming this software is operating within Arch Linux by some means or another. These are also specific to my own personal experience through my own requirements/preferences an…"
---

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# Arch Linux Post Installation Issues

These issues include software that isn't specific to Arch Linux but provides solutions assuming this software is operating within Arch Linux by some means or another. These are also specific to my own personal experience through my own requirements/preferences and assumptions and may be one of many possible solutions to that same problem.

They may also be more than likely not the most optimal solutions to these issues in regard to what others with greater understanding and experience with this software would suggest.

These are just solutions that worked for my own needs.

- [Audio Not Working](#2302132133)
- [C++ Programming Editor Missing](#2302141456)
- [KDE Discover - No Application Backends Found](#2302150748)
- [KDE Package Manager Missing](#2302150755)
- [KDE Plasma - Appearance Theme Installation Failure](#2302150802)
- [KDE Plasma - VLC Not Inhibiting Screensaver In Full-Screen Playback](#2302150806)
- [KDE Plasma - Volume Control Missing From Taskbar](#2302150809)
- [Multi-Monitor Support Not Available In KDE And Can't Be Configured](#2302150817)
- [No Basic Compression Support Available](#2302150823)
- [Nvidia Settings Missing From KDE](#2302141459)
- [Programming - Application Unable To Reference Shared Library In Local Lib](#2302150825)
- [QMMP - New Theme Skins Won't Add](#2302150838)
- [Veracrypt Missing](#2302150840)
- [Virtual Machine Manager - Can't Connect To QEMU-KVM](#2302150841)
- [Windows Drive Not Being Added To Grub](#2302141451)
- [Windows Drive Not Being Detected By OS-Prober](#2302141441)

#### Audio Not Working

 | Install Advanced Linux Sound Architecture Utilities | `# pacman -S alsa-utils` |
|---|---|
| Install ALSA Firmware Binaries | `# pacman -S alsa-firmware` |
| Install Pulse Audio Sound Server | `# pacman -S pulseaudio` |
| Install ALSA Configuration for PulseAudio | `# pacman -S pulseaudio-alsa` |
| Install Sound Open Firmware | `# pacman -S sof-firmware` |
| Restart The Computer | As Required |
| Unmute The Master Channel | `# amixer sset Master unmute` |
| Unmute The Speakers Channel | `# amixer sset Speaker unmute` |
| Unmute The Headphones Channel | `# amixer sset Headphone unmute` |
| Increase ALSA Volume | `# alsamixer` |

##### External References

- [Advanced Linux Sound Architecture - ArchWiki](https://wiki.archlinux.org/title/Advanced_Linux_Sound_Architecture)
- [PulseAudio - ArchWiki](https://wiki.archlinux.org/title/PulseAudio)

#### C++ Programming Editor Missing

 | Install Kate (Advanced Text Editor) | `# pacman -S kate` |
|---|---|

#### KDE Discover - No Application Backends Found

 | Install The QT5 Bindings For PackageKit | `# pacman -S packagekit-qt5` |
|---|---|

##### External References

- [\[Solved\] Discover - no application backends found](https://bbs.archlinux.org/viewtopic.php?id=244501)

#### KDE Package Manager Missing

 | Install The KDE And Plasma Resources Management GUI | `# pacman -S discover` |
|---|---|

#### KDE Plasma - Appearance Theme Installation Failure

 **Installation of /tmp... failed: Could not install dependency: 'kns://sddmtheme.knsrc/api.kde-look.org/...**

When trying to install a KDE Plasma Theme in **System Settings / Appearance / Global Theme**, an error occurs regarding the inability to install a required dependency.

This can be fixed by installing the KDE Config Module for SDDM.

| Install The KDE Config Module for SDDM | `# pacman -S sddm-kcm` |
|---|---|

##### External References

- [ sddm-kcm ](https://archlinux.org/packages/extra/x86_64/sddm-kcm/)
- [ KDE Global Themes - failed to install dependency ](https://community.clearlinux.org/t/kde-global-themes-failed-to-install-dependency/4673/4)

#### KDE Plasma - VLC Not Inhibiting Screensaver In Full-Screen Playback

Whilst playing a video in VLC in fullscreen for a period of time, the screensaver/power management function of KDE will kick in and turn off the screen.

Follow the listed steps below to make sure VLC is properly configured to overcome this and the required Xorg and KDE packages are installed to allow this.

| In VLC navigate to | **Tools/Preferences** |
|---|---|
| Change Show Settings (if required) to | **All** |
| Navigate to | **Video** |
| Enable Checkbox | **Disable Screensaver** |
| Open file (not in VLC lol) | **~/.config/vlc/vlcrc** |
| Uncomment line | **disable-screensaver=1** |
| Install the Xorg package xscreensaver (if not already) | `# pacman -S xscreensaver` |
| Install the KDE Power Management package powerdevil (if not already) | `# pacman -S powerdevil` |
| Restart Linux for changes to take effect (if packages were installed) | As Required |

##### External References

- [\[Solved\] VLC not stopping screensaver coming on](https://bbs.archlinux.org/viewtopic.php?id=102170)
- [Arch Linux - powerdevil](https://archlinux.org/packages/extra/x86_64/xscreensaver/)
- [Arch Linux - xscreensaver](https://archlinux.org/packages/extra/x86_64/xscreensaver/)
- [How do I stop the screensaver from coming on during VLC movie watching?](https://askubuntu.com/questions/69615/how-do-i-stop-the-screensaver-from-coming-on-during-vlc-movie-watching)
- [Howto disable screensaver when vlc is running, under kde?](https://unix.stackexchange.com/questions/187585/howto-disable-screensaver-when-vlc-is-running-under-kde)
- [KDE: Power management configuration module could not be loaded](https://unix.stackexchange.com/questions/509840/kde-power-management-configuration-module-could-not-be-loaded)
- [SOLVED VLC not disabling screen sleeping](https://forum.mxlinux.org/viewtopic.php?t=56020)
- [XScreenSaver - ArchWiki](https://wiki.archlinux.org/title/XScreenSaver)

#### KDE Plasma - Volume Control Missing From Taskbar

A simple solution is to install the KMix volume control application.

| Install The KDE Volume Control Program | `# pacman -S kmix` |
|---|---|

Remember to right click the speaker icon and choose **Select Master Channel**. This is useful if the master channel is not detected initially such as for headphones.

##### External References

- [KMix - KDE Applications](https://apps.kde.org/kmix/)
- [PulseAudio - ArchWiki](https://wiki.archlinux.org/title/PulseAudio)

#### Multi-Monitor Support Not Available In KDE And Can't Be Configured

| Install KDE Screen Management Software | `# pacman -S kscreen` |
|---|---|

#### No Basic Compression Support Available

| Install The p7zip Command-Line File Archiver | `# pacman -S p7zip` |
|---|---|
| Install The Ark Archiving Tool | `# pacman -S ark` |

#### Nvidia Settings Missing From KDE

| Install The Tool For Configuring The NVIDIA Graphics Driver | `# pacman -S nvidia-settings` |
|---|---|

#### Programming - Application Unable To Reference Shared Library In Local Lib

By default only the **/usr/lib** directory can be referenced by developed applications but it is preferable to install custom application libraries into the **/usr/local/lib** directory.

There are two methods to fix this, one using the **ldconfig** command and the other by modifying the **LD\_LIBRARY\_PATH** environment variable in the **bashrc** file. The first method is preferred as it is sometimes unadvisable to manually modify the **LD\_LIBRARY\_PATH** for linking purposes.

*Method 1* actually modifies the environment system wide and doesn't require a shell restart where *Method 2* just modifies the local user shell environment only and the shell must be restarted for the changes to take effect.

##### Method 1: LDCONFIG

| Navigate to the **ld.so.conf.d** directory | `# cd /etc/ld.so.conf.d` |
|---|---|
| Create/Open new **liblocal.conf** file | `# micro locallib.conf` |
| Add line | **/usr/local/lib** |
| Save & Exit **Micro** Text Editor | **CTRL**+**S**, **CTRL**+**Q** |
| Update **LDCONFIG** | `# ldconfig` |

##### Method 2: BASHRC

| Modify user **BASHRC** file | `$ micro ~/.bashrc` |
|---|---|
| Append line | **export LD\_LIBRARY\_PATH="/lib:/usr/lib:/usr/local/lib"** |
| Save & Exit **Micro** Text Editor | **CTRL**+**S**, **CTRL**+**Q** |
| Restart Shell/Terminal Session | As Required |

##### External References

- [shared library - Why can't my program find the libraries in "/usr/local/lib"?](https://askubuntu.com/questions/165027/why-cant-my-program-find-the-libraries-in-usr-local-lib)
- [Where does Ubuntu look for shared libraries?](https://askubuntu.com/questions/350068/where-does-ubuntu-look-for-shared-libraries/350076#350076)

#### QMMP - New Theme Skins Won't Add

In **Settings/Appearance/Skins**. Adding a new skin file will not add the new skin into the selection list. Even if the **Refresh** button is pressed and/or the program restarted.

It was noticed though that the archive file for the skin is still copied into the **~./config/qmmp/skins** folder.

A little research brought around the fact that the **unzip** package needs to be installed to allow the extraction of the skin archives. Which in my case is wasn't. The Arch **qmmp** package didn't include this as a dependancy so it happily installed without unzip; obviously allowing this problem to occur unexpectedly.

So, to fix this just run;

| Install The **unzip** Archive Extracter/Viewer | `# pacman -S unzip` |
|---|---|

##### External References

- [qmmp / Tickets / #952 Added skins do not appear](https://sourceforge.net/p/qmmp-dev/tickets/952)

#### Veracrypt Missing

| Install A Truecrypt Based Disk Encrypter | `# pacman -S veracrypt` |
|---|---|

#### Virtual Machine Manager - Can't Connect To QEMU-KVM

The **libvirtd** service needs to be enabled and started before Virtual Machine Manager can actually connect to QEMU-KVM.

| Enable The libvirtd Service | `# systemctl enable libvirtd` |
|---|---|
| Start The libvirtd service | `# systemctl start libvirtd` |

#### Windows Drive Not Being Added To Grub

| Edit The File | **/etc/default/grub** |
|---|---|
| Uncomment The Line | **GRUB\_DISABLE\_OS\_PROBER=false** |
| Regenerate Grub Configuration File | `# grub-mkconfig -o /boot/grub/grub.cfg` |

#### Windows Drive Not Being Detected By OS-Prober

| Create Windows Mount Directory | `# mkdir /mnt/windows` |
|---|---|
| Mount Windows Drive To Directory | `# mount /dev/nvme0n1p1 /mnt/windows` |
| Re-Probe for Available OS Drives | `# os-prober` |

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