Not using full screen resolution even with VB Guest Add*

[McScoots]

Hi,

I'm running a Fedora 23 64bit Guest on a Windows 7 64bit Host machine (most recent version of Oracle 5.0.8 ). Had some minor trouble getting Vbox Guest Additions (VBGA) running but installed other kernal headers etc. I finally had a trouble free (all OK) installation of VBGA. For example I can link to shared folders etc on the host drive. However no number of reboots, fiddling with GUI screen resolution controls (on Fedora whilst running or on Oracle settings) can get proper resolution. I can only fit one xterm in the window I tried

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VBoxManage  controlvm "My VM" 1280 1024 32 

from the host command window but it just gave me the error:

Syntax error: Invalid parameter '1280'

To test the modules were properly installed on the guest I ran

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sudo modprobe vboxvfs
sudo modprobe vboxadd
grep vboxadd /etc/init*/*

All the above command gave no output. I assume the lack of output from the latter is odd but really I am at the end of my current understanding of how to fix the problem.

Any help appreciated

Adam

[loukingjr]

See: viewtopic.php?f=3&t=70877&hilit=fedora#p339420

[Perryg]

The Fedora 23 release is still using the pre-released Xorg and the numbering still has the .99 which is a deciding factor of it being a pre-release package. Until that is changed your only recourse is to downgrade Xorg (See Fedora as they have the proper way to do this) or wait until it is fixed.

[McScoots]

Thanks for the pointer.

I shall probably just wait... the latter is likely to bugger up some other stuff I have

Adam

[loukingjr]

If you want to take the chance, this works…

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sudo dnf --releasever=22 downgrade xorg-x11-server-Xorg --allowerasing

You can always create a snapshot before you run the command so you can restore. Of course updates will be an issue.

[McScoots]

Yes I decided to live dangerously and go for it anyway. Did the following:

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sudo dnf --showduplicates --allowerasing --releasever=22 downgrade xorg-x11-server-Xorg

I don't know how to do things like snapshots but will keep in mind for next time, thanks.

As is the GuestBox additions doesnt load properly at all after the above change

Should have waited!

Adam

[loukingjr]

I'm not sure about the syntax you used. Not sure how to fix it either. The command I posted worked for my guest.

[loukingjr]

FWIW, you do have to reinstall the GAs and restart the guest to work with the downgraded Xorg server.

[McScoots]

OK, to end, I just made a new machine. I had been noting down what I did at each step anyhow. Before going back to that I did try a

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sudo dnf update 

first but I couldnt get any aspect of GA to load at all after the downgrade.

Adam

[loukingjr]

Sorry it's not working for you.
I didn't think it made a difference but when I first tried to downgrade I ran…

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sudo dnf --releasever=22 downgrade xorg-x11-server-Xorg

it downgraded a couple packages but then I got a message suggesting I add the --allowerasing flag which I did and reran the command.

The other thing is I'm running Fedora 23 XFCE. If KDE or Gnome is the chosen DE the downgrade may fail or remove something it shouldn't. Unfortunately I'm learning bits and pieces about Linux so I don't know what may help.

Mine is still running with the downgraded Xorg-Server but today there was an update to the 1.18 Xorg server which still won't allow the GAs to build.

[loukingjr]

VB 5.0.10 fixes the Xorg 1.18 issue.

[untmdsprt]

VB 5.0.10 fixes the Xorg 1.18 issue.

Does it? I'm currently on VB 5.0.14 (Debian 8 host), and I'm still getting the error:

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unsupported pre-release version of X.Org Server installed.  Not
installing the X.Org drivers.

I'd love to have something that will force it to full resolution of my monitor.

[loukingjr]

What is the guest you are trying to install the guest additions into?