Hi malcolmlewis.

Thanks for your fast response.

Here you are the output of the commands:

Code:
# cat /etc/default/grub
# If you change this file, run 'grub2-mkconfig -o /boot/grub2/grub.cfg' afterwards to update
# /boot/grub2/grub.cfg.

# Uncomment to set your own custom distributor. If you leave it unset or empty, the default
# policy is to determine the value from /etc/os-release
GRUB_DISTRIBUTOR=
GRUB_DEFAULT=saved
GRUB_HIDDEN_TIMEOUT=0
GRUB_HIDDEN_TIMEOUT_QUIET=true
GRUB_TIMEOUT=8
GRUB_CMDLINE_LINUX_DEFAULT="resume=/dev/system/swap quiet showopts intel_idle.max_cstate=1 processor.max_cstate=1"
GRUB_CMDLINE_LINUX=""

# Uncomment to automatically save last booted menu entry in GRUB2 environment

# variable `saved_entry'
# GRUB_SAVEDEFAULT="true"
#Uncomment to enable BadRAM filtering, modify to suit your needs

# This works with Linux (no patch required) and with any kernel that obtains
# the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...)
# GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef"
#Uncomment to disable graphical terminal (grub-pc only)

GRUB_TERMINAL="gfxterm"
# The resolution used on graphical terminal
#note that you can use only modes which your graphic card supports via VBE

# you can see them in real GRUB with the command `vbeinfo'
GRUB_GFXMODE="auto"
# Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux
# GRUB_DISABLE_LINUX_UUID=true
#Uncomment to disable generation of recovery mode menu entries

# GRUB_DISABLE_LINUX_RECOVERY="true"
#Uncomment to get a beep at grub start

# GRUB_INIT_TUNE="480 440 1"
GRUB_BACKGROUND=/boot/grub2/themes/SLE/background.png
GRUB_THEME=/boot/grub2/themes/SLE/theme.txt
SUSE_BTRFS_SNAPSHOT_BOOTING="true"
GRUB_DISABLE_OS_PROBER="true"
GRUB_ENABLE_CRYPTODISK="n"
GRUB_CMDLINE_XEN_DEFAULT="vga=gfx-1024x768x16"

Code:
# xrandr

Screen 0: minimum 640 x 480, current 640 x 480, maximum 640 x 480
default connected primary 640x480+0+0 0mm x 0mm
   640x480       73.00*

Code:
# /sbin/lspci -nnk |egrep -A3 "VGA|Display|3D"
06:00.0 VGA compatible controller [0300]: Silicon Motion, Inc. SM750 [126f:0750] (rev a1)
        Subsystem: Silicon Motion, Inc. SM750 [126f:0750]
7f:08.0 System peripheral [0880]: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 QPI Link 0 [8086:0e80] (rev 07)
        Subsystem: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 QPI Link 0 [8086:0e80]
Thank you!