That is the graphical grub menu … grub is completely dependent upon the video bios extensions supported by your particular graphics adapter (i.e. no two are necessarily the same, and may have different native VBE capabilities)… you can try selecting a grub resolution to see if it will work … or you can findout your adapter’s supported modes several ways too via “vbetest”, (from grub cmd line with) vbeinfo, or, as root
What you have shown pertains to the boot splash. In particular, it pertains to a boot splash specific to “Bootsplash”
openSUSE, however, now uses “Plymouth” (again, see the list in the wikipedia link)
You can likely uninstall Plymouth and then install Bootsplash and then configure it to use that particular theme you linked to if you so choose.
I do this GRUB_GFXMODE in /etc/default/grub 1920x1080
But how can I do: grub2-mkonfig -o /boot/grub2/boot.cfg ?
run in terminal?
(If ‘grub2-mkonfig’ is not a typo you can use command-not-found to lookup the package thake this:cnf grub2-mkonfig)
Of course not.
That link contains a theme and advise for openSUSE 11.2.
Much has changed since then. In particular 13.1 uses grub2 instead of grub (which was actually patched to use gfxboot on/by openSUSE), and plymouth instead of bootsplash/splashy.
Isn’t there a simple method to get read of the opensuse 13.1 bootsplash ???
What do you want exactly?
What does “to get read of” mean? Or do you want to get rid of it?
Well, that’s easy. Just add “plymouth.enable=0” to your boot options, or uninstall the package “plymouth” and its dependencies.
Or just uninstall “plymouth-branding-openSUSE” to only remove the openSUSE theme and keep plymouth itself.
You could also change “splash=silent” to “splash=verbose” in the boot options, like in earlier openSUSE versions.
To change the bootsplash, use “plymouth-set-default”, see its man page. Of course you would have to create/install a new theme first.
Each theme is in a subfolder inside /usr/share/plymouth/themes/.
Since you actually posted a screenshot of the Grub Boot menu,
AFAIK there is no way to modify the screen resolution but you can modify the theme any way you want.
I created a script which allows you to
Change the background
Allows you to change the fonts… size, type, etc
Allows you to modify the progress bar
So, although the screen resolution isn’t likely modifiable (Typically it’s set for VESA in the Grub configuration because at this point in the boot process your options are limited… The driver that supports your GPU isn’t loaded until the Desktop loads (shortly before User Login)). But, you can do the next best thing… Make your fonts smaller. Enlarge the space used by the Grub menu entries.
Of course there is.
Set the desired resolution in YaST->System->Boot Loader->Boot Loader Options->“Console Resolution” (or set/change GRUB_GFXMODE in /etc/default/grub).
This applies to text mode as well then.
The default “Auto-detect by Grub2” tries to get the preferred resolution from the monitor.
Which modes are supported depends on your graphics chip of course.
Btw, Grub2 does come with its own set of graphics drivers, although they are not as sophisticated as the kernel/Xorg drivers of course.
Well, I kind of mis-spoke when I said you couldn’t make <any> changes in boot loader screen resolution. The VESA driver I mentioned does support <a few> different resolutions but as I also described choices are <very> limited. Last I looked, this is generally the only graphics driver Grub2 will load although it’s possible to force VGA instead which is even more limited.
But, the scripts I created should accomplish what the OP wants… You might not be able to modify the screen resolution to your liking but you can make the fonts much smaller (and possibly change the font) to accomplish what he likely wants. And, if you really want to change the background image, my script does that too.