Virtualbox: black screen after login on Mac OS X Host
Virtualbox: black screen after login on Mac OS X Host
host: mac OS X
guest: kubuntu 64bit
after starting kubuntu on virtualbox I get black screen on my kubuntu. If I waite a while, I get the login window from kubuntu, but after entering the password I get black again. So I think kubuntu is running, but I get this black screen, like a kind of screen saver. Maybe it a problem with a the display options or a kind of automatic screensaver?
I got this before, my solution was to mounted a new clean version of kubuntu. Now I saved some important data on the kubuntu, that I dont want to lose again.
I was looking for solutions on the net, but nothing fits my problem. I would be thankful for any help!
my account name under kubuntu is: simulant
[img]start.jpeg[/img]
[img]blackscreen.jpeg[/img]
[img]screen.jpeg[/img]
guest: kubuntu 64bit
after starting kubuntu on virtualbox I get black screen on my kubuntu. If I waite a while, I get the login window from kubuntu, but after entering the password I get black again. So I think kubuntu is running, but I get this black screen, like a kind of screen saver. Maybe it a problem with a the display options or a kind of automatic screensaver?
I got this before, my solution was to mounted a new clean version of kubuntu. Now I saved some important data on the kubuntu, that I dont want to lose again.
I was looking for solutions on the net, but nothing fits my problem. I would be thankful for any help!
my account name under kubuntu is: simulant
[img]start.jpeg[/img]
[img]blackscreen.jpeg[/img]
[img]screen.jpeg[/img]
- Attachments
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- screen.jpeg (44.39 KiB) Viewed 10885 times
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- blackscreen.jpeg (71.34 KiB) Viewed 10885 times
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- start.jpeg (38.39 KiB) Viewed 10885 times
Host: OS X 10.9.5 Guest: ubuntu 15.10 VBox: 5.0.12
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Re: Virtualbox: black screen after login on Mac OS X Host
I rather doubt that your host OS is relevant here. Moving this topic to "Linux Guests".
Please post a VM log file. With the VM fully shut down, right click and "Show Log" in the GUI, save "VBox.log" (ONLY) to a zip, and attach the zip here.
Please post a VM log file. With the VM fully shut down, right click and "Show Log" in the GUI, save "VBox.log" (ONLY) to a zip, and attach the zip here.
Re: Virtualbox: black screen after login on Mac OS X Host
thanks mpack, here ist the log File:mpack wrote:I rather doubt that your host OS is relevant here. Moving this topic to "Linux Guests".
Please post a VM log file. With the VM fully shut down, right click and "Show Log" in the GUI, save "VBox.log" (ONLY) to a zip, and attach the zip here.
- Attachments
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- VBox.log.zip
- (25.99 KiB) Downloaded 27 times
Host: OS X 10.9.5 Guest: ubuntu 15.10 VBox: 5.0.12
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Re: Virtualbox: black screen after login on Mac OS X Host
RAM overcommitted. Reduce to 2GB.VBox.log wrote: 00:00:01.140902 Host RAM: 8192MB total, 5320MB available
...
00:00:01.217792 RamSize <integer> = 0x0000000187800000 (6 568 280 064, 6 GB)
00:00:01.218304 VRamSize <integer> = 0x0000000005f00000 (99 614 720, 95 MB)
How on earth do you expect to assign 5 cores to a VM when the host only has two to begin with, and the host OS needs at least one for itself? Reduce to 1.VBox.log wrote: 00:00:01.217788 NumCPUs <integer> = 0x0000000000000005 (5)
...
00:00:01.446348 CPUM: Logical host processors: 4 present, 4 max, 4 online, online mask: 000000000000000f
00:00:01.446354 CPUM: Physical host cores: 2
I also suggest that you upgrade to 5.0.12. You should always install bugfix releases.
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Re: Virtualbox: black screen after login on Mac OS X Host
Along with the problems mpack already mentioned, Kubuntu with Plasma 5 needs 3D acceleration disabled. At least on OSX hosts.
OSX, Linux and Windows Hosts & Guests
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Re: Virtualbox: black screen after login on Mac OS X Host
3D acceleration is disabledloukingjr wrote:Along with the problems mpack already mentioned, Kubuntu with Plasma 5 needs 3D acceleration disabled. At least on OSX hosts.
it was working fine before, I reduced it now to your proposal. I have the latest version of vbox installed. Black screen problem remains.opeNewbie wrote:How on earth do you expect to assign 5 cores to a VM when the host only has two to begin with, and the host OS needs at least one for itself? Reduce to 1.
new log file:
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- VBox.log.zip
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Host: OS X 10.9.5 Guest: ubuntu 15.10 VBox: 5.0.12
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Re: Virtualbox: black screen after login on Mac OS X Host
Try VB 5.0.12
OSX, Linux and Windows Hosts & Guests
There are three groups of people. Those that can count and those that can't.
There are three groups of people. Those that can count and those that can't.
Re: Virtualbox: black screen after login on Mac OS X Host
okay, my version of VB is 5.0.10. The automatic update doesnt show any new updates. I will make an manual update.loukingjr wrote:Try VB 5.0.12
Host: OS X 10.9.5 Guest: ubuntu 15.10 VBox: 5.0.12
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Re: Virtualbox: black screen after login on Mac OS X Host
just looked at your log. The only evidence I see of guest additions is…
You need to update them.
Code: Select all
00:00:16.130131 VMMDev: Guest Log: 00:00:00.001223 main Executable: /opt/VBoxGuestAdditions-4.3.28/sbin/VBoxService
OSX, Linux and Windows Hosts & Guests
There are three groups of people. Those that can count and those that can't.
There are three groups of people. Those that can count and those that can't.
Re: Virtualbox: black screen after login on Mac OS X Host
I installed now the 5.0.12 version of VBox. Black Screen issue remains. New Log file:loukingjr wrote:just looked at your log. The only evidence I see of guest additions is…You need to update them.Code: Select all
00:00:16.130131 VMMDev: Guest Log: 00:00:00.001223 main Executable: /opt/VBoxGuestAdditions-4.3.28/sbin/VBoxService
Last edited by opeNewbie on 11. Jan 2016, 17:59, edited 1 time in total.
Host: OS X 10.9.5 Guest: ubuntu 15.10 VBox: 5.0.12
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Re: Virtualbox: black screen after login on Mac OS X Host
see my last post.
OSX, Linux and Windows Hosts & Guests
There are three groups of people. Those that can count and those that can't.
There are three groups of people. Those that can count and those that can't.
Re: Virtualbox: black screen after login on Mac OS X Host
dont really understand what and how should I update now, sorry... can you plis describe it?loukingjr wrote:see my last post.
Host: OS X 10.9.5 Guest: ubuntu 15.10 VBox: 5.0.12
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Re: Virtualbox: black screen after login on Mac OS X Host
You keep saying "new log" and then posting the same log as before: still 6GB RAM and 5 vCPUs, 5.0.10.
Re: Virtualbox: black screen after login on Mac OS X Host
sorry , last update was somehow a mistake
- Attachments
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- VBox.log.zip
- (21.85 KiB) Downloaded 11 times
Host: OS X 10.9.5 Guest: ubuntu 15.10 VBox: 5.0.12
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- Site Moderator
- Posts: 39134
- Joined: 4. Sep 2008, 17:09
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Re: Virtualbox: black screen after login on Mac OS X Host
Ok, the only remaining issues I see in the log is (a) you don't have an extension pack installed on the host - so any VM that tries to use USB will fail, and (b) you are using obsolete Guest Additions from the Ubuntu fork of VirtualBox - you need to install current and official GAs.
Beyond that, the VM seems to be working: the GAs announce themselves in the log, which means that the guest OS successfully booted, even if you couldn't see anything. Another issue to consider is whether your OpenGL host drivers are working - an OpenGL test app should be useful to answer that.
One last thing: I recommend that you stop using "Suspend" until you have a working state. Reboot your VM from new each time.
Beyond that, the VM seems to be working: the GAs announce themselves in the log, which means that the guest OS successfully booted, even if you couldn't see anything. Another issue to consider is whether your OpenGL host drivers are working - an OpenGL test app should be useful to answer that.
One last thing: I recommend that you stop using "Suspend" until you have a working state. Reboot your VM from new each time.