I upgraded recently from 13.04 to 13.10. I have Dell Inspiron 4GB RAM, Intel Core i3. Login takes a lot of time and all the graphics are very slow. Alt + Tab takes a lot of time (seconds).

• After reading some threads, I also removed Cinnamon desktop, but it didn't change anything.
• Tried running in FailSafeX mode, but still the performance is poor.

I had to ultimately fall back to Gnome Flashback (no effects). Gnome flashback works fine without any issues.

Can anyone please help me get back to Unity, else I will have a very hard time running using Gnome.

UPDATE

Here is my /var/log/dmesg and /var/log/Xorg.0.log

Is it possible to boot (without actually installing it) ubuntu and run Ubuntu desktop image via PXE like a Live CD? I don't want the session to actually preserve state. Each boot should be fresh and alike. Is it possible to achieve this via PXE boot.

Also when a machine is booted via PXE, after the OS has loaded, which machine's resources does the OS consume? The client's or the PXE server's? I believe it should be latter.

I want to create my own customized Ubuntu derivative and this question already gave me a very good start. My requirements are quite specific I want to roll out a CD with

• Set of users who are supposed to run them (root, admin, guest) pre-installed
• With their passwords already set
• Installation not asking for creating users on booting or during OS installation
• Autologin to guest user

Is this even possible?

Thanks to the community in advance :)

I am trying to create a custom session by creating a custom.desktop file in /usr/share/xesessions folder. Remember this is not a gnome or some other session. I have created my own application for this session, which are simple.

Case 1

Chrome Browser

Contents of custom.desktop file

[Desktop Entry]
Name=Internet Kiosk
Comment=This is an internet kiosk
Exec=google-chrome --kiosk
TryExec=
Icon=
Type=Application

Issue

Chrome browser starts in kiosk mode but does not capture complete screen area. Some area is left at the bottom and right side of the screen.

Case 2

Custom pyGTK app (Quickly)

Contents of custom.desktop file

[Desktop Entry]
Name=Custom Kiosk
Comment=This is a custom kiosk
Exec=~/MyCustomPyGTKApp
TryExec=
Icon=
Type=Application

Issue

My custom pyGTK app has window.fullScreen() in the code. That means it should open in full screen without the window chrome (and it does under the normal session). But that too, leaves lots of space around it.

Need Help

Can anyone tell me whats going on here. I think its some issue with borders as pointed out at http://www.instructables.com/id/Setting-Up-Ubuntu-as-a-Kiosk-Web-Appliance/?ALLSTEPS in Step 8

If by chance, Google Chromium is not stretched to the edges with the --kiosk switch enabled there is a simple fix. To stretch Chromium simply log in as your regular user and edit chromeKiosk.sh to not have the --kiosk switch. Then log in as the restricted user, click the wrench and choose options. Then on the Personal Stuff tab select Hide system title bar and use compact borders. Close the options screen and stretch Chromium to fit the monitor. Then go back into the options window and set it to Use system title bar and borders. After this is done, log out of your restricted user (might need to just reboot) and log into your regular user. Edit chromeKiosk.sh back to include the --kiosk switch again and Chromium should be full screen next time you log into the restricted user.

If I were to use a custom pyGTK or a gtkmm app, how should I get around this issue. window.fullScreen() should occupy the complete screen area. This has to be done programmatically or in some other way that can scale. I have to deploy this on large number of machines located at different geographical areas. Doing it manually on every machine is not possible.

I am developing a native application for Ubuntu using quickly. How can I disable few key bindings such as prevent Ctrl + F4 from closing the window, and other key combinations?

It might sound ridiculous, but I want to prevent closing a window in Ubuntu. I want to provide to my users a highly secure environment, without any desktop environment with just one window open. Now I want to make sure user can't close that window. Is there any way to hack around with compiz so that there is no way a user can close the window. Not by pressing close button, not by pressing alt+f4 etc.?

I am open to use any window manager amongst those available in 12.04. Either of compiz, metacity, and others. I am also willing to hack around with source code if required.

EDIT: Just disabling ALT+F4 from OS doesn't solve the problem. That is because some applications issue close commands on pressing ALT+F4 even before the event is bubbled to OS. I need a way by which the ability to close the window is taken away from application itself.