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Preface We had oVirt virtualization cluster runnning for quite a while (on HP ProLiant hardware), and it (along with 2 other servers) was powered with APC SmartUPS 3000 with additional battery pack. Some time ago I noticed that battery level indicator was never 100% at UPS (while 100% at add-on battery pack). APC software indicated . . . → Read More: oVirt Virtualization Cluster – UPS with LiFePO4 Batteries and Automatic Shutdown Preface One day we finally decide to install a virtualization cluster. Although we had just several Linux and 2 Windows servers, managing all that staff scattered across different boxes becomes too cumbersome and time consuming, so move and run them under KVM (kernel virtual machine) on 2 physical servers was a logical solution. . . . → Read More: RAID L1/5/10 Benchmarks for oVirt/KVM Virtualization Servers Preface I have an old laptop – Lenovo ThinkPad Edge 11, manufactured between 2011-2013, which I use about 6 weeks in a year. With recent OS it becomes a slowpoke, even with 500GB 7200RPM hard drive. so I run into dilemma – what to do next, replace or upgrade. Basically laptop is very . . . → Read More: Revitalization of the Old Lenovo ThinkPad Edge 11 Laptop [2026-10-11] LTSpice + WINE Fix on Linux System with nVidia Card(s) Launching LTSpice on Linux with nVidia results in this error message: libEGL warning: egl: failed to create dri2 screen. Here is a fix: Create wrapper launcher script (e.g. run_ltspice.sh) with this command: Copy Code Copied Use a different Browser __EGL_VENDOR_LIBRARY_FILENAMES=/usr/share/glvnd/egl_vendor.d/10_nvidia.json __EGL_LOG_LEVEL=debug WINEPREFIX=~/.wine wine . . . → Read More: Linux Tips & Tricks |
