Saturday, October 18, 2025

Nvidia new hotplug feature on Linux

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 If you use nvidia driver for your GPU, you probably wonder why in some config, you can't hotplug your second monitor. You need to reboo...
Wednesday, December 18, 2024

Renew letsencrypt ssl certificate for zimbra 8.8.15

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 Letsencrypt certs usually consists of these files: 1. cert.pem 2. chain.pem 3. fullchain.pem 4. privkey.pem I am not going to discuss about...
Friday, December 6, 2024

Merge pdf files using command line in Linux

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 To merge 2 pdf files for example using command line best using pdfunite. pdfunite file1.pdf file2.pdf output.pdf where output.pdf is the re...
Tuesday, October 3, 2023

Second monitor no display after latest update - KDE-neon

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 After latest update as of Oct 3, 2023, my second monitor was undetected with latest kernel (6.2.0-33-generic). If I boot with previous kern...
Thursday, September 14, 2023

KDE: bluetooth headset battery percentage

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 If you like mine, I can't view my headset's battery percentage in my KDE's bluetooth notification. To be able to see it, I need...
Thursday, September 7, 2023

Installing kde-neon user edition using btrfs for root filesystem

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 If you want to install KDE-Neon using btrfs as / filesystem, there is a bug that preventing it to boot successfully to console or to X or W...
Wednesday, June 14, 2023

How to resize a partition in proxmox 5 or 6

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Background 1. The partition is ordinary partition and not LVM 2. The filesystem is ext4 3. The steps tested on proxmox 5 and 6 and maybe app...