First of all so you understand my knowledge on the matter, I'm a 10-year Mac user and I only run Linux vm's to serve enterprise services. I have never really used Linux X systems, beside gnome once or twice but not with such issues, and so I'm configuring a VM to run some network tools from.
So anyway, I'm running a VM with CentOS 7 & KDE Plasma on VMWare Fusion. It's virtualising a 2-Core 2GB machine with 3D Graphics acceleration and 768 shared video memory.
So initially I set up my desktop with 1920x1200 resolution, but when I rebooted both widgets and windows would go out of format. I figured this was caused by that when GRUB loads (1280x768) and only until after I logon it sets the desktop resolution to 1920x1200. whatever, since I don't like the low-res boot screen because it's still messing the desktop.
So I used the vga= option on boot vga=352
And it gives me an error: don't know where it gets the 160 from
And I hit enter: And I enter 352 again for 1920x1200x32
So I read how to configure grub2 boot resolution
(as root) $ vim /etc/default/grub inserted in the end GRUB_GFXMODE=1920x1200 (also tried with 1920x1200x32) GRUB_GFXPAYLOAD_LINUX=1920x1200 (also tried with =keep)
; saved, then
$ grub2-mkconfig -o /boot/grub2/grub.cfg Generating grub configuration file ... Found linux image: /boot/vmlinuz-3.10.0-327.10.1.el7.x86_64 Found initrd image: /boot/initramfs-3.10.0-327.10.1.el7.x86_64.img Found linux image: /boot/vmlinuz-3.10.0-327.el7.x86_64 Found initrd image: /boot/initramfs-3.10.0-327.el7.x86_64.img Found linux image: /boot/vmlinuz-0-rescue-a5b0b547cfed4198bae524ac4787e0de Found initrd image: /boot/initramfs-0-rescue-a5b0b547cfed4198bae524ac4787e0de.img done
and rebooted. What happens is that with this mode the boot resolution is set to the 1280x768 resolution, and only until after the logon the resolution is set to 1920x1200. loading on res 1280x768 boot screen on 1280x768 blue rectangle corresponds to the boot screen resolution when the resolution is properly adjusted
So I'd just like to understand how to properly configure the equivalent of vga=352, but I can't figure out how. I have also tried editing 00_headers on grub.d but that didn't work either.
I can't seem to correctly configure GRUB2 boot to assume the desired resolution.