Public bug reported:

After first boot you'll notice, the screen goes blank and stay that way, even 
when xserver is loaded.
May hardware specs are (dmidecode):

Processor Information
        Socket Designation: FM1 
        Type: Central Processor
        Family: S-Series
        Manufacturer: AuthenticAMD
        ID: 10 0F 30 00 FF FB 8B 17
        Signature: Family 18, Model 1, Stepping 0
        Flags:
                FPU (Floating-point unit on-chip)
                VME (Virtual mode extension)
                DE (Debugging extension)
                PSE (Page size extension)
                TSC (Time stamp counter)
                MSR (Model specific registers)
                PAE (Physical address extension)
                MCE (Machine check exception)
                CX8 (CMPXCHG8 instruction supported)
                APIC (On-chip APIC hardware supported)
                SEP (Fast system call)
                MTRR (Memory type range registers)
                PGE (Page global enable)
                MCA (Machine check architecture)
                CMOV (Conditional move instruction supported)
                PAT (Page attribute table)
                PSE-36 (36-bit page size extension)
                CLFSH (CLFLUSH instruction supported)
                MMX (MMX technology supported)
                FXSR (FXSAVE and FXSTOR instructions supported)
                SSE (Streaming SIMD extensions)
                SSE2 (Streaming SIMD extensions 2)
                HTT (Multi-threading)
        Version: AMD A8-3800 APU with Radeon(tm) HD Graphics
        Voltage: 1.2 V
        External Clock: 100 MHz
        Max Speed: 2400 MHz
        Current Speed: 2400 MHz
        Status: Populated, Enabled
        Upgrade: Socket FM1
        L1 Cache Handle: 0x0040
        L2 Cache Handle: 0x003F
        L3 Cache Handle: Not Provided
        Serial Number: Not Specified
        Asset Tag: Not Specified
        Part Number: Not Specified
        Core Count: 4
        Core Enabled: 4
        Thread Count: 4
        Characteristics:
                64-bit capable

BIOS Information
        Vendor: American Megatrends Inc.
        Version: 0603
        Release Date: 06/08/2011
        Address: 0xF0000
        Runtime Size: 64 kB
        ROM Size: 4096 kB
        Characteristics:
                PCI is supported
                BIOS is upgradeable
                BIOS shadowing is allowed
                Boot from CD is supported
                Selectable boot is supported
                BIOS ROM is socketed
                EDD is supported
                5.25"/1.2 MB floppy services are supported (int 13h)
                3.5"/720 kB floppy services are supported (int 13h)
                3.5"/2.88 MB floppy services are supported (int 13h)
                Print screen service is supported (int 5h)
                8042 keyboard services are supported (int 9h)
                Serial services are supported (int 14h)
                Printer services are supported (int 17h)
                ACPI is supported
                USB legacy is supported
                BIOS boot specification is supported
                Targeted content distribution is supported
        BIOS Revision: 4.6

Base Board Information
        Manufacturer: ASUSTeK Computer INC.
        Product Name: F1A75-M PRO
        Version: Rev X.0x
        Serial Number: 110501140001859
        Asset Tag: To be filled by O.E.M.
        Features:
                Board is a hosting board
                Board is replaceable
        Location In Chassis: To be filled by O.E.M.
        Chassis Handle: 0x0003
        Type: Motherboard
        Contained Object Handles: 0

This happens only, if the internal GPU of the AMD APU is used. When using an 
additional GPU in PCIe slot, everything works fine.
The second way to get arround this bug is installing in legacy bios mode.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: grub-efi (not installed)
ProcVersionSignature: Ubuntu 3.5.0-17.27-generic 3.5.5
Uname: Linux 3.5.0-17-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.6.1-0ubuntu1
Architecture: amd64
Date: Wed Oct 10 17:02:47 2012
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Beta amd64 (20120926)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: grub2
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: grub2 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug quantal

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https://bugs.launchpad.net/bugs/1065095

Title:
  no screen (including xserver) when using uefi version of grub2  on
  asus  f1a75-m pro

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