First off, I want to say that I’m not an audio expert, but I could say I’m an enthusiast, so don’t expect anything marvelous from what I’m writing… Initially, I had an old SoundBlaster X-Fi (below average), I used it with the RCA output and a converter to 3.5mm, eventually, I upgraded to a FiiO BTR15 DAC and was surprised that with newer hardware I couldn’t achieve an audio quality level anywhere close to what I had with my SoundBlaster.
Spoiler alert: This journey is crazy, since not everything is as “plug and play” as one would hope, so I decided to see what would happen if I thoroughly checked and finally found some configuration parameters that greatly improved the audio quality.
Things to test in fedora 40 KDE (no X11)
I have a personal list that I want to test in Fedora 40 with KDE 6… I will update the results after the release…
- KeePassXC AutoType
- ssh -X (I want to execute some visual app from a remote host running F40 and from F40)
- Installing it in a qemu/kvm VM… (and GUI performance!)
- KRFB (VNC)
- xrdp
- fullscreen sharing (like google meet, zoom?)
- program sharing thumbnails
- HIDPI behaviour (4K)
- Nvidia card performance…
Solving the openvpn_execve Error in LXC
Problem Description:
When running OpenVPN in an LXC environment, users may encounter a specific error that prevents the OpenVPN service from operating correctly. The error manifests as follows:
Jan 08 00:56:47 fw openvpn[404]: openvpn_execve: unable to fork: Resource temporarily unavailable (errno=11)
Jan 08 00:56:47 fw openvpn[404]: Exiting due to fatal error
Jan 08 00:56:47 fw systemd[1]: openvpn-client@yourvpn.service: Main process exited, code=exited, status=1/FAILURE
The life span of Solid State Memories for Backups
The Decay Problem
Memory decay in computer memory cells is a growing concern for everyone. This refers to the gradual loss of data stored in a computer’s memory, due to a variety of factors, such as age, temperature, and the number of read-write cycles. This can lead to data loss, corruption, and other issues.
Continue reading The life span of Solid State Memories for BackupsThe Clipboard and Password Managers
There are many discussions about to use or not a password manager. However, most experts agree that you must use a strong password in every system/service (+2fa, but we are not going to elaborate about it today).
So to create a strong password, you need:
Continue reading The Clipboard and Password ManagersInstalling Libvirtd in OpenSUSE
Installing this virtualization is very easy..
Installing process:
to install, just type this commands:
Continue reading Installing Libvirtd in OpenSUSEInstalling VirtualBox-7.0 in OpenSUSE 15.x (or tumbleweed) from repo and UEFI Secure Boot Enabled
This is a simple/short how to for installing VirtualBox 7 in OpenSUSE 15
Here we are handling two problems:
- There is no repo for OpenSUSE 15.4 (we need to do a trick)
- There is no documentation on how to create proper UEFI secure boot MOK’s (owner keys) for the newer OpenSUSE which demands that the key will have special attributes like “codeSigning“
so, here is the answer:
Continue reading Installing VirtualBox-7.0 in OpenSUSE 15.x (or tumbleweed) from repo and UEFI Secure Boot EnabledOpenSUSE 15.x Post Install Guide Part 1 (Software Installation)
WIP (Work In progress)…
This is my personal guide for post install OpenSUSE with KDE for developing/hacking, everything as root…
Continue reading OpenSUSE 15.x Post Install Guide Part 1 (Software Installation)Security Risk Without a CVE
Most security assessments only includes CVE’s and known vulnerabilities but many fail to address the true potential security risks. And this will create a big problem for your organization.
The problem starts because most organizations only wants to have a security analysis based on know-existent vulnerabilities, like a “tell me what KB to patch”, but this approach is not good and fails to protect you in two ways:
Continue reading Security Risk Without a CVEMitigating Security Risks
When you do a security assessment, you need to elaborate some recommendations to mitigate the potential risks. This is one of the most difficult parts, because bad assumptions can easily lead to false sense of security and overspending…
Continue reading Mitigating Security Risks