Missing Android manual

March 11th, 2018 No comments

We all got Android devices without a proper manual so here are some basics I have learned over time…

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How to boot Windows partition virtually under KVM with UEFI firmware

March 5th, 2018 4 comments

It is actually quite easy to boot Windows virtualized using KVM. But to properly use the UEFI bootloader, suitable QEMU arguments are required. Here is a lightly commented QEMU command I use to boot virtual Windows 10 I have on a separate partition.

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Categories: Linux, Server stuff Tags:

RC5 device addressees and commands are partly “standardized”

March 5th, 2018 No comments

During my attempt to program an Atmel micro-controller to act as a remote controller sending RC5 commands, the original remote suddenly stopped sending the correct Standby code to the device and I noticed device ID part of the RC5 frame has changed from 0x10 into 0x11. I accidentally switched the original remote to a mode for a different type of appliance! I realized that after I found a nice PDF from Freescale semiconductor showing a table with common device IDs and command IDs.

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Telegram emoji list with codes and descriptions

February 1st, 2018 No comments

After almost 2 years of using Telegram, I finally discovered that it is possible to enter emoji using its name after “:” character. Unfortunately I couldn’t find any complete list of available emojis anywhere, so I had to dig deep into the Telegram desktop source code to generate it.

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Samsung printer problem on GNU/Linux (printing black pages)

August 22nd, 2017 2 comments

I’ve been using Samsung ML-2160 printer on Gentoo Linux for some time without problems but then I connected it to a box running Arch Linux and I some problems came up. It was printing almost completely black pages (with a few narrow white strips).

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[cz] Proč je Facebook a Messenger špatný

August 11th, 2017 2 comments

Facebook prý spojuje lidi a umožňuje být neustále s přáteli, aniž bych vystrčil nohu z baráku či postele. Facebook se tváří jako nejlepší kamarád a pomocník, že dělá pro nás to nejlepší. Ale je tomu opravdu tak? Read more…

Referer sending options in Firefox

March 16th, 2017 No comments

Sending Referer header to the target site after every click on a link is basically revealing URL of the referring site. Several sites mention it as a potential privacy concern but as far as I know there is no UI option in common browsers. Firefox since 28 added “hidden” options for this.
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Tips for making a new password and how passwords work

October 22nd, 2016 No comments

From what I have seen, many people use weak passwords. But it’s actually easy to make them strong. Let’s see. Read more…

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Setting up IPv6 using a DHCP client

October 21st, 2016 4 comments

Our ISP (internet service provider) finally started offering IPv6. On the server, I received static configuration. Here, they are using DHCP6 with prefix delegation and it isn’t as straightforward as one would expect.

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[cz] Úvod do SQL

October 15th, 2016 No comments

SQL je nejběžnější jazyk používaný pro práci s RDBMs (relační databázové systémy). Protože je užitečné umět pracovat s databází, septal jsem stručný přehled operací, které se pomocí SQL dají dělat na jednoduchých konkrétních příkladech, s odkazy na další zdroje.

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