Plymouth, login and appearing panel started to take long time suddenly.
It is not because startup apps, because they are already started before the desktop and panel is loaded (HPLIP startup failed because it couldn't find the task bar, and that means startup application already started before the panel loads).
What the problem is, my plymouth only took 3~6 seconds, and login took less than 2 seconds before. Also it didn't took really long for unity panels to appear before. However, for now the ubuntu 12.04 watermark still appears for 3 seconds after login.
I googled this problem, but none of them seemed to fix this.
I think it started when I messed up
/lib/plymouth/themes directory (I already recovered it and executed
update-initramfs -d). It also changed my tty fonts from thick fonts to thin fonts (this also happend when Xorg.conf was invalid, but deleting Xorg.conf didn't solve it).
There are some other problems that every time I start my laptop, all x applications launched by sudo/gksu/gksudo don't work unless I type
xhost + in my command line.
Here's my bootchart image : https://dl.dropboxusercontent.com/u/98353279/JINOHPC-precise-20130726-4.png
Xorg log is here : https://dl.dropboxusercontent.com/u/98353279/Xorg.0.log
EDIT: I found another problem.
When I login as Guest and log out, the screen would change into text mode and never change.
Also, I entered recovery mode, run command line as root, remounted file system as read/write and terminated, and it loads my custom plymouth theme (even through I changed alternative and updated initramfs) and fails.
What should I do? Any suggestion is appreciated.
EDIT: I removed FRAMEBUFFER=y in /etc/initramfs-tools/conf.d/splash and the console font returned to normal. However, the boot speed doesn't increase at all..