Blog of Alexander Mamchenkov

… mammoth cave …

Plain SQL v.s. Zabbix API for text history items

For one of the past tasks I have the following requirement: a number of hosts that are monitored with Zabbix has a item of history type that provide list of addresses in text format (one per line) and than I need to take all those lists and make one common list (table) where I would […]

VLC mosaic for multiple RSTP streams

Recently had a task to open streams from 4 cameras over RSTP in a single windows using VLC. There is a bunch of howtos on net with relevant info and examples, but after trying many options non of them worked out of the box. Tweaking things here and there for a while I managed to […]

Galaxy Nexus custom ROM

As you may know, Google has announced the next Adnroid (KitKat) some time ago, and at the same moment they told that Galaxy Nexus will not receive this update. This was pretty sad for me, as I got my Nexus mainly because of two reasons: raw Android (without all those apps that normally come pre-installed […]

Touchscreen problems on dual head fedora

Today had an interesting issue that my colleague faced. He has touch screen Sony Vaio and normal, non-touch screen monitor attached for dual head. While he was trying to work with touch screen and special pen, then cursor was going weird. The solution here is to limit the touch screen input to touch screen area […]

Google Chrome Fullscreen

Have a problem with Google Chrome not willing to exit fullscreen mode (by F11, or clicking “Exit full screen” bubble link) when run on a secondary monitor on my Fedora. Pretty annoying and the only way to restore to normal was to re-open chrome, but this is not always a good thing for me. Today […]

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