Archive for the ‘it’ Category

hp6735s and ATI display driver in ubuntu

Monday, June 14th, 2010

Situation:

  • I enjoy using Ubuntu!
  • I enjoy using Ubuntu 9.10 (cos’ I still haven’t upgraded to 10.04)
  • I have hp6735s laptop
  • I use ATI proprietary driver
  • everything is too smoothed on the screen
  • font look like shit
  • windows *** works fine

After digging a little I found out that the problem is:

  • not with the fonts
  • Ubuntu set wrong screen resolution for me: 1280×768
  • right screen resolution 1280×800 is not in the list in System > Parameters > Screen
  • right screen resolution is not available in ATI Catalyst either

Here’s how I fixed it:

  1. run sudo gedit /etc/X11/xorg.conf in terminal
  2. found something like Section "Monitor" ... Option "PreferredMode" "1280x768"
  3. changed 1280x768 to 1280x800
  4. everything works fine after reboot!
  5. compiz and all 3D effects work nice too!
  6. ...and hey, it's the first time I edited xorg.conf by hands!

Enjoy using linux!
That the OS you really need!

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Watch your webcam in console!

Friday, January 8th, 2010

Wow! I really love linux! I feel that with every minute spent inside linux my love to this OS grows up! It’s so outrageous! You can do almost everything!!!

Today, I was really shocked with the abilities of the mplayer!
Here’s a short video of what I’ve done:

So, here’s a list of what I was doing with it (everything is done in tty-conole->[Ctrl]+[Alt]+[F5]):

  1. I wondered if I can watch films in console. That’s real! You just have to specify the special output driver. It’s the ASCII-Art driver:
    mplayer -vo aa nameOfYourFile.avi
    You can enjoy colour video in console, just replace aa driver with the Colour ASCII-Art driver caca!
  2. I felt it’s not enough! So, I tried to watch my web-cam in console! Obviously, mplayer is able to do it! You just need to specify the tv:// protocol, instead of filename:
    mplayer tv:// -vo caca
  3. Here’s the first problem. The output is alright, but that stats information always updates, and the video is blinking:( So, it makes impossible for you to watch your wab-cam normally. I started to investigate the mplayer’s man page:
    man mplayer
    it’s so huge! (read it if you want :) )
    I quickly found the solution! Here is it: the parameter -really-quiet:
    mplayer tv:// -vo caca -really-quiet
  4. But that was not enough! I wish I can watch the web-cam, as I look at mirror! I found the parameter -flip. But it just turns everything upside-down. The real solution for that is the video-filter Mirror! Specify it & enjoy:
    mplayer tv:// -vo caca -vf mirror -really-quiet
  5. There’s one more improvement, you can do to your output. You can make it better by specifing the font. The smaller the font – the better’s the output. I usually use Uni1-VGA8:
    setfont Uni1-VGA8

That’s all, folks! Go and watch your favourite videos in console!

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Posted in Creativity, Life, it | No Comments »

arp-attacks in our hostel

Sunday, January 3rd, 2010

Happy New Year 2 everyone in this world!
Let al your dreams come true in this 0x7DA year!!!

Right after the NY celebration I wanted to crawl the web & get in touch with my friends. I was really disappointed when I saw our local gateway down…No ping queries were successful:(
I put ping 192.168.1.123 -t and returned to celebration!
At 02 AM ping succeeded!
The situation repeated several times…

But I really wanted to wish best wishes to my mates!
So I started to investigate… The computer was overfilled with ARP-queries :( They changed the real MAC-address of the gateway, so the computer sent packets into wrong place.

The solution is simple:

Make your ARP table entries static!
Under Windows You can do it in the following way:

  1. Run “cmd”; [Start->Run->type "cmd" into it]
  2. type in command line:
    arp -s Gateway.Or.Another.Computer It-s-MAC-Address
  3. For instance if computer’s ip is 192.168.1.123;
  4. It’s MAC-address is 00-11-22-33-44-55;
  5. So you should type into command-line:
    arp -s 192.168.1.123 00-11-22-33-44-55

Best Wishes!!!

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Posted in University, it, Тирнет | No Comments »

Genius G-Pen 4500 && Ubuntu 9.10

Thursday, December 10th, 2009

I’m about to use my Genius G-Pen 4500 with Ubuntu. And here is my experience in installing this tablet.

Everything is pretty stright-forward.

  1. Go to http://code.google.com/p/linuxgenius/
  2. Get the source for wizardpen. I used http://linuxgenius.googlecode.com/files/wizardpen-0.7.0-alpha2.tar.gz
    wget http://linuxgenius.googlecode.com/files/wizardpen-0.7.0-alpha2.tar.gz
  3. Unpack.
    tar -xvf wizardpen-0.7.0-alpha2.tar.gz
  4. Move into the unpacked dir:
    cd wizardpen-0.7.0-alpha2
  5. Configure, make and install:
    sudo ./configure --with-xorg-module-dir=/usr/lib/xorg/modules && make && make install
  6. Check for wizardpen.la and wizardpen.so (driver installed correctly):
    ls /usr/lib/xorg/modules/input/wizardpen.*
  7. Connect your tablet (if not yet connected)
  8. Create file /etc/hal/fdi/policy/99-wizardpen.fdi
  9. I used the following data inside the file:
    <?xml version="1.0" encoding="ISO-8859-1" ?>
    <deviceinfo version="0.2">
    <device>
    <!-- This MUST match with the name of your tablet -->
    <match key="info.product" contains="UC-LOGIC Tablet WP5540U">
    <merge key="input.x11_driver" type="string">wizardpen</merge>
    <merge key="input.x11_options.SendCoreEvents" type="string">true</merge>
    <merge key="input.x11_options.TopX" type="string">0</merge>
    <merge key="input.x11_options.TopY" type="string">0</merge>
    <merge key="input.x11_options.TopZ" type="string">40</merge>
    <merge key="input.x11_identifier" type="string">stylus</merge>
    <merge key="input.x11_options.BottomX" type="string">32739</merge>
    <merge key="input.x11_options.BottomY" type="string">32745</merge>
    <merge key="input.x11_options.BottomZ" type="string">1024</merge>
    <merge key="input.x11_options.MaxX" type="string">32739</merge>
    <merge key="input.x11_options.MaxY" type="string">32745</merge>
    </match>
    </device>
    </deviceinfo>

    * This source code was highlighted with Source Code Highlighter.
  10. After all this You should reboot and start using your Genius G-Pen 4500.
  11. FIXED: I still have one unsolved problem. The stylus starts working a bit far from the tablet. Can’t resolve this. Under Windows I found quite unique driver, which let me set sensitivity for it. FIX: Add TopZ and BottomZ values to the file

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Posted in Creativity, it | 6 Comments »