How to properly reset all grub/boot settings?

Question

Several symptoms:

No splash screen, just a console
No TTYs available (CTRL+ALT+F1 etc..), just random coloured bars

A while ago, I've used a tutorial to fix Plymouth bootsplash resolution and changed settings I don't quite recall now. What is the proper way to reinstall and reset Plymouth and/or GRUB settings to see if removing my modifications will fix the boot to some acceptable level?

NB: I've updated to 11.10-beta hoping it would fix the problem, but this originally happened on 11.04

Edit: I think the tutorial I followed is this one but I'm not 100% sure. Also, I think the things mentioned in the tutorial are not the only ones I've changed, since I've tried to fix this when it first happened, so I may have messed up other stuff too. This is why I'm looking for a "reset all" solution.

Can you provide us a link to the tutorial you followed to edit the Plymouth bootsplash resolution? — Nitin Venkatesh, Sep 18 '11 at 16:30
Cool :) Did you try undoing each of the steps in that tutorial? — Nitin Venkatesh, Sep 18 '11 at 17:20
@nitstorm: Hm, I have to say I didn't.. I figured the update from 10.10 to 11.04 caused the problem so I didn't think my modifications are a problem. Now, I think I might try it... :) — dr Hannibal Lecter, Sep 18 '11 at 17:45
You probably made some changes to your /etc/default/grub file, so if you are at a loss, give us the contents of it. — arrange, Sep 18 '11 at 18:05
@nitstorm: Well, it seems like the "undo everything" worked. I got the splash back, it's low-res, huge and ugly but I somehow just love it :) Also, the TTYs are back. Would you mind posting your comment as an answer so I can give you some props? :) — dr Hannibal Lecter, Sep 20 '11 at 18:11
@dr Hannibal Lecter: Oh awesome! Will post my comment as an answer. Feel free to edit the answer as you wish with the steps you took :) — Nitin Venkatesh, Sep 20 '11 at 20:35

score 4 · Accepted Answer · answered Sep 20 '11 at 20:35

Did you try undoing each of the steps in that tutorial?

Like, (Note: This is just an undoing of whatever that was done in that tutorial)

sudo apt-get remove v86d
editing the /etc/default/grub file and
1. changing the line 9 which would now read GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nomodeset video=uvesafb:mode_option=1280x1024-24,mtrr=3,scroll=ywrap" back to GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
2. and line 18 which would now read - GRUB_GFXMODE=1280x1024 back to GRUB_GFXMODE=1280x1024.

3. gksudo gedit /etc/initramfs-tools/modules and remove the last line reading uvesafb mode_option=1280x1024-24 mtrr=3 scroll=ywrap

4. Remove the line that reads FRAMEBUFFER=y in the /etc/initramfs-tools/conf.d/splash file

5. Then run sudo update-grub2

6. Then run sudo update-initramfs -u

7. Then reboot

How to properly reset all grub/boot settings?

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