Can’t Save JPEG in a Deployed Qt Application

This has been haunting me for quite some time. When building Qt app for Windows, the QImage::save() function did not work for JPEG for deployed applications, while it did work if Qt SDK was installed on the machine.

The audacious’ problem “playlist_entry_get_filename assertion failed”

I’m very fond of audacious player (audacious2 to be precise) – light-weight, fast, and follows the WinAmp (2) path. Neat

Few days ago I’ve got the following error message on audacious start-up:

** (audacious2:2348): CRITICAL **: playlist_entry_get_filename: assertion `entry != NULL' failed
Segmentation fault

Reinstallation and re-configuration didn’t help; but the fix is quite trivial:

• Start the audacious as root: $ sudo audacious2 ; this should work just fine, unlike when starting as normal user.
• Add anything to the playlist, just so it’s not empty.
• Close the player.
• Now start the player as normal user; all should work now.

That’s it. Hope this helps!

IE Certificate Error with Signed Certificate

So, you’ve got your shiny new certificate, and your good old server. You’ve installed the certificate, chain or intermediate certificate, and all is nice and clean in FireFox, Chrome, Chromium, etc.

Then, your boss opens up his IE, and gets Certificate Error – “not issued by trusted certificate authority” and/or “issued for a different website’s address”. Of course, that’s a major pain, as IE – however bad, buggy and crappy it is – still holds majority of browsers market, as most computer users are incapable of installing a better browser.

Troubles with svnserve, svn+ssh, and SSH

I encountered this today, and it took me some time to figure out what’s going on, as the behavior was so strange it shut off my reasoning.

Disable touchpad on Ubuntu Linux

Quite annoyingly, I was unable to disable touchpad on laptop through the dedicated fn combination. Bit of googling brought results fast, here’s a simple script I use now for switching on and off.

No sound on headphones with Intel HDA 3400/Realtek ALC259 in Linux

Just got a new laptop, Asus U52F, awesome machine, but just as with any new hardware, there are few glitches.

The major one for me was, that the headphones did not work at all – got sound playing only from the speakers, with headphones jack plugged in or not.

Why cron does not run cron.hourly/daily/weekly/monthly scripts?

Your scripts in /etc/cron.hourly/, /etc/cron.daily/, /etc/cron.weekly/, or /etc/cron.monthly/ do not run?

Cannot switch resolution in Ubuntu

About a month ago I upgraded my work computer’s Ubuntu from 8.10 to 9.04. All worked just fine (though not as fast as a clear installation of 9.04 as I have on home computer – bit of clean up needed), until yesterday, when Ubuntu suddenly switched to 1024×768 resolution, and didn’t want to move to any higher resolution.

HowTo: “mod_mime_magic: invalid type 0 in mconvert()” error

If you’re getting the “mod_mime_magic: invalid type 0 in mconvert()” error in your error log of Apache (or any other http server), it’s most probably due to fault in mime-magic’s configuration.

Windows XP under VirtualBox

I’ll be updating this post with stuff about common problems with running WinXP under VirtualBox (with Linux – in my case Ubuntu 8.10 Intrepid Ibex – as host).