Auto-resize Guest Display and Seamless Mode grayed out DESPITE installing VirtualBoxAddition (Virtual Box 5.2.6, CentOS 7)

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1
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I installed VirtualBoxAddition and i still cant have resolution higher than 800x600 in full-screen mode. I did it in various ways
- Input , Insert Guest Addition CD, or by downloading iso and opening it from inside VM
- Then i tried typing in terminal either sudo ./VBoxAddition.run or sh ./VBoxAddition.run
There goes few lines, which last is "Starting Virtual Box Addition" and no errors. After rebooting CentOS, whole VM or even host computer i still cant enable 16:9 resolution by Auto-Resize. I also checked for logs in cd /var/log
There are few of them
- vboxadd-install.log
- vboxadd-setup.log
- vboxadd-setup.log.1
- vboxadd-setup.log.2
- vboxadd-setup.log.3
- vboxadd-setup.log.4
- vboxadd-unintall.log
Inside them: (checked by nano )
vboxadd-install
groupadd: group 'vboxadd' already exists
vboxadd-setup.log
https://pastebin.com/YRXHCZUFvboxadd-setup.log.1
Removing existing VirtualBox kernel modules.
vboxadd-setup.log.2
pastebin.com/jzkKyRqhvboxadd-setup.log.3
Removing existing VirtualBox kernel modules.vboxadd-setup.log.4
https://pastebin.com/8fFvDyGT
vboxadd-uninstall.log is empty.
Could anyone please help me, i dont know what to do to get full screen 16:9 resolution on my computer in Centos & Virtual Box?
centos virtualbox
add a comment |Â
up vote
1
down vote
favorite
I installed VirtualBoxAddition and i still cant have resolution higher than 800x600 in full-screen mode. I did it in various ways
- Input , Insert Guest Addition CD, or by downloading iso and opening it from inside VM
- Then i tried typing in terminal either sudo ./VBoxAddition.run or sh ./VBoxAddition.run
There goes few lines, which last is "Starting Virtual Box Addition" and no errors. After rebooting CentOS, whole VM or even host computer i still cant enable 16:9 resolution by Auto-Resize. I also checked for logs in cd /var/log
There are few of them
- vboxadd-install.log
- vboxadd-setup.log
- vboxadd-setup.log.1
- vboxadd-setup.log.2
- vboxadd-setup.log.3
- vboxadd-setup.log.4
- vboxadd-unintall.log
Inside them: (checked by nano )
vboxadd-install
groupadd: group 'vboxadd' already exists
vboxadd-setup.log
https://pastebin.com/YRXHCZUFvboxadd-setup.log.1
Removing existing VirtualBox kernel modules.
vboxadd-setup.log.2
pastebin.com/jzkKyRqhvboxadd-setup.log.3
Removing existing VirtualBox kernel modules.vboxadd-setup.log.4
https://pastebin.com/8fFvDyGT
vboxadd-uninstall.log is empty.
Could anyone please help me, i dont know what to do to get full screen 16:9 resolution on my computer in Centos & Virtual Box?
centos virtualbox
add a comment |Â
up vote
1
down vote
favorite
up vote
1
down vote
favorite
I installed VirtualBoxAddition and i still cant have resolution higher than 800x600 in full-screen mode. I did it in various ways
- Input , Insert Guest Addition CD, or by downloading iso and opening it from inside VM
- Then i tried typing in terminal either sudo ./VBoxAddition.run or sh ./VBoxAddition.run
There goes few lines, which last is "Starting Virtual Box Addition" and no errors. After rebooting CentOS, whole VM or even host computer i still cant enable 16:9 resolution by Auto-Resize. I also checked for logs in cd /var/log
There are few of them
- vboxadd-install.log
- vboxadd-setup.log
- vboxadd-setup.log.1
- vboxadd-setup.log.2
- vboxadd-setup.log.3
- vboxadd-setup.log.4
- vboxadd-unintall.log
Inside them: (checked by nano )
vboxadd-install
groupadd: group 'vboxadd' already exists
vboxadd-setup.log
https://pastebin.com/YRXHCZUFvboxadd-setup.log.1
Removing existing VirtualBox kernel modules.
vboxadd-setup.log.2
pastebin.com/jzkKyRqhvboxadd-setup.log.3
Removing existing VirtualBox kernel modules.vboxadd-setup.log.4
https://pastebin.com/8fFvDyGT
vboxadd-uninstall.log is empty.
Could anyone please help me, i dont know what to do to get full screen 16:9 resolution on my computer in Centos & Virtual Box?
centos virtualbox
I installed VirtualBoxAddition and i still cant have resolution higher than 800x600 in full-screen mode. I did it in various ways
- Input , Insert Guest Addition CD, or by downloading iso and opening it from inside VM
- Then i tried typing in terminal either sudo ./VBoxAddition.run or sh ./VBoxAddition.run
There goes few lines, which last is "Starting Virtual Box Addition" and no errors. After rebooting CentOS, whole VM or even host computer i still cant enable 16:9 resolution by Auto-Resize. I also checked for logs in cd /var/log
There are few of them
- vboxadd-install.log
- vboxadd-setup.log
- vboxadd-setup.log.1
- vboxadd-setup.log.2
- vboxadd-setup.log.3
- vboxadd-setup.log.4
- vboxadd-unintall.log
Inside them: (checked by nano )
vboxadd-install
groupadd: group 'vboxadd' already exists
vboxadd-setup.log
https://pastebin.com/YRXHCZUFvboxadd-setup.log.1
Removing existing VirtualBox kernel modules.
vboxadd-setup.log.2
pastebin.com/jzkKyRqhvboxadd-setup.log.3
Removing existing VirtualBox kernel modules.vboxadd-setup.log.4
https://pastebin.com/8fFvDyGT
vboxadd-uninstall.log is empty.
Could anyone please help me, i dont know what to do to get full screen 16:9 resolution on my computer in Centos & Virtual Box?
centos virtualbox
asked Mar 16 at 19:06
jkes
63
63
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1 Answer
1
active
oldest
votes
up vote
0
down vote
It seems that installation has successfully passed.
Ensure that you have vboxadd-service.service and vboxadd.service started:
systemctl -t service|grep vbox
If services started, then reboot your guest machine. During the boot, when GRUB menu will be showed, press e to edit boot menu entry. Find line with linux16 (kernel parameters line) and put in the end vga=ask, then press Ctrl+x for boot. Therefore the linux kernel ask you to select appropriate graphical mode. If selected mode is convenient for you, save vga=<your_choice> to /boot/grub2/grub.conf for further boots.
Thank you a lot but i have few problems. After pressing e on boot screen and pasting vga=over, i could choose few resolutions but not one i need: 1366x768 of my laptop. Resolutions there are either too small or too big, some even makes system unable to boot. I tried editing grub.conf file with "vga=1366x768" but there was no file with this name (only grub.cfg). I wrote this line in grub.cfg and newly made grub.conf but it not helped me. Default resolution is still 4:3 800x600 with black boxes on sides of screen,
â jkes
Mar 17 at 1:25
add a comment |Â
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
0
down vote
It seems that installation has successfully passed.
Ensure that you have vboxadd-service.service and vboxadd.service started:
systemctl -t service|grep vbox
If services started, then reboot your guest machine. During the boot, when GRUB menu will be showed, press e to edit boot menu entry. Find line with linux16 (kernel parameters line) and put in the end vga=ask, then press Ctrl+x for boot. Therefore the linux kernel ask you to select appropriate graphical mode. If selected mode is convenient for you, save vga=<your_choice> to /boot/grub2/grub.conf for further boots.
Thank you a lot but i have few problems. After pressing e on boot screen and pasting vga=over, i could choose few resolutions but not one i need: 1366x768 of my laptop. Resolutions there are either too small or too big, some even makes system unable to boot. I tried editing grub.conf file with "vga=1366x768" but there was no file with this name (only grub.cfg). I wrote this line in grub.cfg and newly made grub.conf but it not helped me. Default resolution is still 4:3 800x600 with black boxes on sides of screen,
â jkes
Mar 17 at 1:25
add a comment |Â
up vote
0
down vote
It seems that installation has successfully passed.
Ensure that you have vboxadd-service.service and vboxadd.service started:
systemctl -t service|grep vbox
If services started, then reboot your guest machine. During the boot, when GRUB menu will be showed, press e to edit boot menu entry. Find line with linux16 (kernel parameters line) and put in the end vga=ask, then press Ctrl+x for boot. Therefore the linux kernel ask you to select appropriate graphical mode. If selected mode is convenient for you, save vga=<your_choice> to /boot/grub2/grub.conf for further boots.
Thank you a lot but i have few problems. After pressing e on boot screen and pasting vga=over, i could choose few resolutions but not one i need: 1366x768 of my laptop. Resolutions there are either too small or too big, some even makes system unable to boot. I tried editing grub.conf file with "vga=1366x768" but there was no file with this name (only grub.cfg). I wrote this line in grub.cfg and newly made grub.conf but it not helped me. Default resolution is still 4:3 800x600 with black boxes on sides of screen,
â jkes
Mar 17 at 1:25
add a comment |Â
up vote
0
down vote
up vote
0
down vote
It seems that installation has successfully passed.
Ensure that you have vboxadd-service.service and vboxadd.service started:
systemctl -t service|grep vbox
If services started, then reboot your guest machine. During the boot, when GRUB menu will be showed, press e to edit boot menu entry. Find line with linux16 (kernel parameters line) and put in the end vga=ask, then press Ctrl+x for boot. Therefore the linux kernel ask you to select appropriate graphical mode. If selected mode is convenient for you, save vga=<your_choice> to /boot/grub2/grub.conf for further boots.
It seems that installation has successfully passed.
Ensure that you have vboxadd-service.service and vboxadd.service started:
systemctl -t service|grep vbox
If services started, then reboot your guest machine. During the boot, when GRUB menu will be showed, press e to edit boot menu entry. Find line with linux16 (kernel parameters line) and put in the end vga=ask, then press Ctrl+x for boot. Therefore the linux kernel ask you to select appropriate graphical mode. If selected mode is convenient for you, save vga=<your_choice> to /boot/grub2/grub.conf for further boots.
answered Mar 16 at 21:42
Yurij Goncharuk
2,2582521
2,2582521
Thank you a lot but i have few problems. After pressing e on boot screen and pasting vga=over, i could choose few resolutions but not one i need: 1366x768 of my laptop. Resolutions there are either too small or too big, some even makes system unable to boot. I tried editing grub.conf file with "vga=1366x768" but there was no file with this name (only grub.cfg). I wrote this line in grub.cfg and newly made grub.conf but it not helped me. Default resolution is still 4:3 800x600 with black boxes on sides of screen,
â jkes
Mar 17 at 1:25
add a comment |Â
Thank you a lot but i have few problems. After pressing e on boot screen and pasting vga=over, i could choose few resolutions but not one i need: 1366x768 of my laptop. Resolutions there are either too small or too big, some even makes system unable to boot. I tried editing grub.conf file with "vga=1366x768" but there was no file with this name (only grub.cfg). I wrote this line in grub.cfg and newly made grub.conf but it not helped me. Default resolution is still 4:3 800x600 with black boxes on sides of screen,
â jkes
Mar 17 at 1:25
Thank you a lot but i have few problems. After pressing e on boot screen and pasting vga=over, i could choose few resolutions but not one i need: 1366x768 of my laptop. Resolutions there are either too small or too big, some even makes system unable to boot. I tried editing grub.conf file with "vga=1366x768" but there was no file with this name (only grub.cfg). I wrote this line in grub.cfg and newly made grub.conf but it not helped me. Default resolution is still 4:3 800x600 with black boxes on sides of screen,
â jkes
Mar 17 at 1:25
Thank you a lot but i have few problems. After pressing e on boot screen and pasting vga=over, i could choose few resolutions but not one i need: 1366x768 of my laptop. Resolutions there are either too small or too big, some even makes system unable to boot. I tried editing grub.conf file with "vga=1366x768" but there was no file with this name (only grub.cfg). I wrote this line in grub.cfg and newly made grub.conf but it not helped me. Default resolution is still 4:3 800x600 with black boxes on sides of screen,
â jkes
Mar 17 at 1:25
add a comment |Â
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