query: Ubuntu black screen and underscore at the top left corner on VirtualBox
positive_passages.docid: 1285
positive_passages.text: My computer boots to a black screen, what options do I have to fix it?
negative_passages.docid: 106553
negative_passages.text: Ubuntu 16.04 kernel 4.4.0-21 not loading nvidia/vboxdrv modules anymore (Required key not available)
negative_passages.docid: 148018
negative_passages.text: VBox on 14.04: Kernel driver not installed (rc=-1908)
negative_passages.docid: 126798
negative_passages.text: Why am I getting a weird, blocky black background on my Windows desktop?
negative_passages.docid: 92190
negative_passages.text: Error code 0x803F7001 activating Windows inside Virtual Box
negative_passages.docid: 133315
negative_passages.text: virtual box doesnt shows 64 bit os in ubuntu14.04 64 bit
negative_passages.docid: 74637
negative_passages.text: How do I install Ubuntu on a VirtualBox client from an ISO image?
negative_passages.docid: 155359
negative_passages.text: Ubuntu 14.10 does not install in virtualbox
negative_passages.docid: 155143
negative_passages.text: VirtualBox error kernel headers
negative_passages.docid: 109137
negative_passages.text: passthrough graphics card to virtualbox
negative_passages.docid: 14824
negative_passages.text: Mouse disappear in VirtualBox
negative_passages.docid: 124014
negative_passages.text: Black screen after installation of Ubuntu 18.04
negative_passages.docid: 2311
negative_passages.text: Cause of black artifacts in render?
negative_passages.docid: 34658
negative_passages.text: How to improve performance of VirtualBox when UNITY_LOW_GFX_MODE is not working?
negative_passages.docid: 110515
negative_passages.text: VirtualBox not starting after kernel upgrade
negative_passages.docid: 111683
negative_passages.text: USB Device not seen in VirtualBox
negative_passages.docid: 33927
negative_passages.text: How do I press Ctrl+Alt+Delete in VirtualBox?