Hi!
UEFI support in VB got me interested and I installed it yesterday.
I used RHEL6x64 as guest with EFI and Win7x64(8GBRAM/512MBGraphics)as host.
But,even after complete installation, I got no video.
MBR method works fine though.
Checked the manual and all I found there was - two types of video mode in UEFI - Mac/Linux
Nothing substantial !
Does rhel6 video work in UEFI ?
Thanks
EFI + RHEL6_x64 = NO VIDEO ?
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Sasquatch
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Re: EFI + RHEL6_x64 = NO VIDEO ?
Your question is better placed in the Red Hat forums. Only some OSes support EFI, and if yours doesn't, then just disable EFI and leave it at that. Want to know if it's supported by your OS, then ask the one who created/maintains it.
Read the Forum Posting Guide before opening a topic.
VirtualBox FAQ: Check this before asking questions.
Online User Manual: A must read if you want to know what we're talking about.
Howto: Install Linux Guest Additions
Howto: Use Shared Folders on Linux Guest
See the Tutorials and FAQ section at the top of the Forum for more guides.
Try searching the forums first with Google and add the site filter for this forum.
E.g. install guest additions site:forums.virtualbox.org
Retired from this Forum since OSSO introduction.
VirtualBox FAQ: Check this before asking questions.
Online User Manual: A must read if you want to know what we're talking about.
Howto: Install Linux Guest Additions
Howto: Use Shared Folders on Linux Guest
See the Tutorials and FAQ section at the top of the Forum for more guides.
Try searching the forums first with Google and add the site filter for this forum.
E.g. install guest additions site:forums.virtualbox.org
Retired from this Forum since OSSO introduction.
-
ahendricks
- Posts: 2
- Joined: 6. May 2011, 16:36
- Primary OS: MS Windows 7
- VBox Version: OSE Debian
- Guest OSses: Ubuntu 11.04
Re: EFI + RHEL6_x64 = NO VIDEO ?
From the user guide Chapter 3....
Video modes in EFIEFI provides two distinct video interfaces: GOP (Graphics Output Protocol) and UGA (Universal Graphics Adapter). Mac OS X uses GOP, while Linux tends to use UGA. VirtualBox provides a configuration option to control the framebuffer size for both interfaces.
To control GOP, use the following VBoxManage command:
VBoxManage setextradata "VM name" VBoxInternal2/EfiGopMode N
Where N can be one of 0,1,2,3,4 referring to the 640x480, 800x600, 1024x768, 1280x1024, 1440x900 screen resolution respectively.
To change the UGA resolution:
VBoxManage setextradata "VM name" VBoxInternal2/UgaHorizontalResolution 1440
VBoxManage setextradata "VM name" VBoxInternal2/UgaVerticalResolution 900
The video mode for both GOP and UGA can only be changed when the VM is powered off and remains persistent until changed.
Video modes in EFIEFI provides two distinct video interfaces: GOP (Graphics Output Protocol) and UGA (Universal Graphics Adapter). Mac OS X uses GOP, while Linux tends to use UGA. VirtualBox provides a configuration option to control the framebuffer size for both interfaces.
To control GOP, use the following VBoxManage command:
VBoxManage setextradata "VM name" VBoxInternal2/EfiGopMode N
Where N can be one of 0,1,2,3,4 referring to the 640x480, 800x600, 1024x768, 1280x1024, 1440x900 screen resolution respectively.
To change the UGA resolution:
VBoxManage setextradata "VM name" VBoxInternal2/UgaHorizontalResolution 1440
VBoxManage setextradata "VM name" VBoxInternal2/UgaVerticalResolution 900
The video mode for both GOP and UGA can only be changed when the VM is powered off and remains persistent until changed.