Pb with guest resolution on MacOS X mavericks host

[Lisa_P]

Hello,

I have an imac 27' running mac OS X 10.9 and virtualBox 4.3.6.
My graphic card is : NVIDIA GeForce CT 755M
I installed centOS 6.5 inside virtualBox.
My problem is that I cannot have a screen resolution inside the VM that is better than 1024*768.
Of course, I installed guest additions in the VM (host).
I also tried changing resolution with VBoxManage from host OS.
I also tried forcing higher resolution from guest OS with xrandr.
None of this worked.

Does anyone know f there is a way to get a better resolution with an imac host?

Any idea is welcome.

Thank you in advance for any help.

[Perryg]

If you use the host+F toggle to go in and out of full screen you should more than 1024*768. If not then the guest additions are either not installed or they failed for some reason.
See if there is a log file in "/var/log" like VBoxadd-install, Etc and read the log for any errors.

[Lisa_P]

Thank you,
I re installed the VBox Guest additions from command line and got no error message.
But when I had a look at the vboxadd-install.log file in /var/log, I found this :

test -e include/linux/autoconf.h -a -e include/config/auto.conf || ( \
echo; \
echo " ERROR: Kernel configuration is invalid."; \
echo " include/linux/autoconf.h or include/config/auto.conf are missing."; \
echo " Run 'make oldconfig && make prepare' on kernel src to fix it."; \
echo; \
/bin/false)


I think I am going to investigate this.
I am new to linux so any clue as to what's gone wrong in my install will also be very welcome.
Many thanks again.

[Perryg]

The portion of coded you posted is just that, code. Part of a string that runs and the output or result is actually showed later. Post the complete log file ( as an attachment )

[Lisa_P]

Thank you for your answer. I would like to provide the trace files as attachment, the problem is : from my guest (VM centOS), i don't find the shared folder that should be auto mounted (as specified in virtualBox settings). Any idea of what goes wrong?

[Lisa_P]

I had found a workaround but log file is too big to be posted on that forum. Don't know what to do...

[Perryg]

I had found a workaround but log file is too big to be posted on that forum. Don't know what to do...

You could compress the log file.

You posted two files but not the one I asked for It should be vboxadd-install.log

[Lisa_P]

Thanks!
Here it is.

By the way, my problem seems to be partially solved. I did the following things a few month ago :
1) tried to uninstall and install again VBoxAdditions ( I provide in attachment the last log file in which there are still error messages).
2) Upgraded virtualBox version on my mac
3) Upgraded mavericks OS.
Now, my virtual machine has a 1600*1200 resolution. It is much better, but I would like to have the same resolution as provided by my imac ( I have a 2560*1440 pixel screen).

[loukingjr]

Thanks!
Here it is.

By the way, my problem seems to be partially solved. I did the following things a few month ago :
1) tried to uninstall and install again VBoxAdditions ( I provide in attachment the last log file in which there are still error messages).
2) Upgraded virtualBox version on my mac
3) Upgraded mavericks OS.
Now, my virtual machine has a 1600*1200 resolution. It is much better, but I would like to have the same resolution as provided by my imac ( I have a 2560*1440 pixel screen).

if your CentOS guest does not fill the screen in Full Screen mode then the guest additions are not installed correctly. here is a guide on how to install them.
http://www.if-not-true-then-false.com/2 ... -hat-rhel/
I would try this line first from the tutorial...
as root...

Code: Select all

yum install gcc kernel-devel kernel-headers dkms make bzip2 perl

edit: the above command was all I had to run before installing the guest additions in my Fedora 20 guest but I don't know what CentOS includes or doesn't so you may have to go through the entire tutorial.

[Lisa_P]

Thank you so much! It now works perferctly! I just had to type the command line you indicated ("yum install...") then run VBoxInstallXXX as indicated in the tutorial and everything worked perfectly!
I am now able to use my linux VM on my entire screen.
Many thanks again.

[loukingjr]

Thank you so much! It now works perferctly! I just had to type the command line you indicated ("yum install...") then run VBoxInstallXXX as indicated in the tutorial and everything worked perfectly!
I am now able to use my linux VM on my entire screen.
Many thanks again.

you're most welcome. glad you're up and running.