DisplayFusion on Windows 8.1 with VirtualBox Windows 7 VM

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Brett53

12 discussion posts

I'm running into an issue running VirtualBox on Windows 8.1 with dual monitors. The VM I'm running is Windows 7 and it's configured to use both monitors as well.

If DisplayFusion is running when I first boot the VM, the secondary monitor is detected by the VM; however, I can never display it. The steps to reproduce are as follows:

- Left-hand monitor is primary, right-hand monitor is secondary
- Spin up Virtualbox Windows 7 VM on right-hand monitor configured for dual monitors (boot from scratch, not restore)
- Windows 7 should be configured identically, i.e. right-hand monitor is primary, left-hand is secondary

Windows 7 will detect and use the left-hand monitor, but the taskbar will never show the "icon" for the left-hand window, nor is it accessible from the Windows 8.1 host.

If, however, DisplayFusion isn't running when the Win 7 VM is booted, all will work fine. Additionally, if once both monitors are working in the VM, if the session is "saved" rather than shut down, it will continue to work fine.

VirtualBox version: 4.3.12 r93733 (also happened on earlier versions)
Display driver: AMD Radeon HD 7800 v13.251.0.0
Intel Core i7 processor 3.2GHz, 18GB RAM
Dual 1920x1200 monitors
DisplayFusion Pro on Steam v6.1 (also happened on earlier versions)

Sep 4, 2014 • #1

I'll test this out here and see what we can do to get this fixed up

Sep 4, 2014 (modified Sep 4, 2014) • #2

I've just tested this out here, and it seems to work fine for me. Perhaps the second VirtualBox window is just opening off the screen? If you use Alt+Tab, does the second VirtualBox window show up there?

Sep 5, 2014 • #3

Brett53

12 discussion posts

Naturally, every time I've done it in the past, I've had the issue. Even just before posting this. Now I can't reproduce it.

Let me pay closer attention to what exactly I'm doing before-hand.

Thanks,

Brett

Sep 5, 2014 • #4

Brett53

12 discussion posts

Okay, I think I have it.

1. Boot machine as described so you have two windows up - start menu for VM on right-hand display.
2. Minimize left-hand VM display so that you're seeing the host machine left-hand display (rather than the VM left-hand display)
3. Reboot VM

When the VM goes to initialize the secondary (left-hand) display that's minimized as it's booting, the icon will disappear. From that point on, it won't come back unless you close DisplayFusion and reboot the VM.

Let me know if that works for you. I'm able to reproduce it reliably now. I operate in that fashion so often (with the right-hand display running my VM and the left-hand running my local), I didn't realize what I was doing. I only use the left-hand side of the VM about 50% of the time.

Brett

Sep 9, 2014 • #5

Ok, interesting! I'll test it out here tomorrow with those steps

Sep 11, 2014 • #6

Ok, just tested out these steps, but still can't reproduce the issue. For me, the taskbar button for the second monitor stayed on the DF taskbar. Which taskbar mode are you using? (Settings > Taskbar tab)

Sep 11, 2014 • #7

Brett53

12 discussion posts

I've attached a screenshot of the taskbar settings page. BTW, I am running the VirtualBox Guest Additions in my Windows 7 VM.

• Attachment [protected]: Screenshot.jpg [159,674 bytes]

Sep 11, 2014 • #8

Ok, that's how I tested here too. I'm running VirtualBox 4.3.16, could you try updating to that version to see if you can still reproduce this?

Sep 16, 2014 • #9

Brett53

12 discussion posts

Hmm... I upgraded to 4.3.16 r95972. Spun up the new version of VirtualBox, then upgraded the VM additions for my Windows 7 VM as well. Minimized the left screen, rebooted to pick up the new drivers and the left screen disappeared again.

I did check the logs. The following seems to be the relevant portion (the secondary screen disappears when the "glowing windows logo" goes away once the boot is finished). I've highlighted the events that seem tied to the screen disappearing. Note that Windows doesknow about the second screen--it shows up in the Display Resolution control panel applet. I simply can't see it, nor does it show up in the Alt-Tab window list.

One other piece of interesting information--if I exit DisplayFusion, only one of the icons show up at the bottom of the screen. It's not until I reboot the VM (with DisplayFusion shut down) that the second window will come back.

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00:00:22.520504 GL_ARB_multitexture: 1
00:00:22.520522 GL_ARB_shader_objects: 1
00:00:22.520531 GL_ARB_fragment_shader: 1
00:00:22.520541 GL_ARB_pixel_buffer_object: 1
00:00:22.520558 GL_ARB_texture_rectangle: 1
00:00:22.520582 GL_EXT_texture_rectangle: 1
00:00:22.520608 GL_NV_texture_rectangle: 0
00:00:22.520624 GL_ARB_texture_non_power_of_two: 1
00:00:22.520642 GL_EXT_framebuffer_object: 1
00:00:22.520696 Max Tex Coords (16), Img Units (32)
00:00:22.696888 VUSB: attached 'HidMouse' to port 1
00:00:22.711161 Display::handleDisplayResize(): uScreenId = 0, pvVRAM=000000000c970000 w=1920 h=1200 bpp=32 cbLine=0x1E00, flags=0x1
00:00:22.711184 UIFrameBuffer::RequestResize: Screen=0, Format=843204434, BitsPerPixel=32, BytesPerLine=7680, Size=1920x1200, Sending to async-handler..
00:00:22.712009 UIMachineLogicFullscreen::maybeAdjustGuestScreenSize2D video acceleration is enabled.
00:00:22.728566 HID LEDs sync is disabled.
00:00:22.728784 UIFrameBufferQImage::resizeEvent: Format=843204434, BitsPerPixel=32, BytesPerLine=7680, Size=1920x1200
00:00:22.728798 UIFrameBufferQImage::resizeEvent: Resizing to directly use VGA device content..
00:00:23.091360 UIFrameBufferQImage::resizeEvent: Format=843204434, BitsPerPixel=32, BytesPerLine=7680, Size=1920x1200
00:00:23.091384 UIFrameBufferQImage::resizeEvent: Resizing to directly use VGA device content..
00:00:24.233674 RTC: period=0x20 (32) 1024 Hz
00:00:24.254660 RTC: period=0x100 (256) 128 Hz
00:00:24.302499 RTC: period=0x20 (32) 1024 Hz
00:00:24.349223 RTC: period=0x100 (256) 128 Hz
00:00:24.656908 RTC: period=0x200 (512) 64 Hz
00:00:27.448975 NAT: link up
00:00:27.450726 NAT: DNS#0: 192.168.1.1
00:00:27.450736 NAT: DNS#1: 192.168.1.16
00:00:27.474886 NAT: DNS#0: 192.168.1.1
00:00:27.474900 NAT: DNS#1: 192.168.1.16
00:00:27.474906 NAT: DHCP offered IP address 10.0.2.15
00:00:27.486297 NAT: IPv6 not supported
00:00:30.353355 NAT: DHCP offered IP address 10.0.2.15
00:00:33.116741 NAT: DHCP offered IP address 10.0.2.15
00:00:48.557790 Changing the VM state from 'RUNNING' to 'SUSPENDING'.
00:00:50.968479 PDMR3Suspend: Driver 'VD'/0 on LUN#0 of device 'ahci'/0 took 2 410 640 145 ns to suspend
00:00:51.062508 PDMR3Suspend: 2 504 693 752 ns run time
00:00:51.062527 Changing the VM state from 'SUSPENDING' to 'SUSPENDED'.
00:00:51.063538 File system of 'D:\Program Files\Oracle\VirtualBox\VBoxGuestAdditions.iso' (DVD) is unknown
00:00:51.064215 DrvBlock: Flushes will be ignored
00:00:51.064226 DrvBlock: Async flushes will be passed to the disk
00:00:51.064535 VD: Opening the disk took 286002 ns
00:00:51.064551 PIIX3 ATA: LUN#2: CD/DVD, total number of sectors 28434, passthrough disabled
00:00:51.064560 ************************* CFGM dump *************************
00:00:51.064561 [/Devices/piix3ide/0/LUN#2/] (level 0)
00:00:51.064563   Driver <string>  = "Block" (cb=6)
00:00:51.064564 
00:00:51.064564 [/Devices/piix3ide/0/LUN#2/AttachedDriver/] (level 1)
00:00:51.064566   Driver <string>  = "VD" (cb=3)
00:00:51.064566 
00:00:51.064566 [/Devices/piix3ide/0/LUN#2/AttachedDriver/Config/] (level 2) (restricted root)
00:00:51.064568   Format   <string>  = "RAW" (cb=4)
00:00:51.064569   Path     <string>  = "D:\Program Files\Oracle\VirtualBox\VBoxGuestAdditions.iso" (cb=58)
00:00:51.064570   ReadOnly <integer> = 0x0000000000000001 (1)
00:00:51.064571   Type     <string>  = "DVD" (cb=4)
00:00:51.064571 
00:00:51.064572 [/Devices/piix3ide/0/LUN#2/AttachedDriver/Config/Plugins/] (level 3)
00:00:51.064573 
00:00:51.064573 [/Devices/piix3ide/0/LUN#2/AttachedDriver/Config/Plugins/VDPluginCrypt/] (level 4)
00:00:51.064575   Path <string>  = "D:\Program Files\Oracle\VirtualBox/ExtensionPacks/Oracle_VM_VirtualBox_Extension_Pack/win.amd64/VDPluginCrypt.DLL" (cb=114)
00:00:51.064576 
00:00:51.064576 [/Devices/piix3ide/0/LUN#2/Config/] (level 1) (restricted root)
00:00:51.064577   Mountable <integer> = 0x0000000000000001 (1)
00:00:51.064578   Type      <string>  = "DVD" (cb=4)
00:00:51.064579 
00:00:51.064579 ********************* End of CFGM dump **********************
00:00:51.066197 Changing the VM state from 'SUSPENDED' to 'RESUMING'.
00:00:51.066982 Changing the VM state from 'RESUMING' to 'RUNNING'.
00:01:02.015916 RTC: period=0x20 (32) 1024 Hz
00:01:02.030432 RTC: period=0x100 (256) 128 Hz
00:01:02.086880 RTC: period=0x200 (512) 64 Hz
00:01:04.121928 RTC: period=0x20 (32) 1024 Hz
00:01:04.146559 RTC: period=0x100 (256) 128 Hz
00:01:04.202322 RTC: period=0x200 (512) 64 Hz
00:01:10.544055 Guest Additions capability report: (0x5 -> 0x0) seamless: no, hostWindowMapping: no, graphics: no
00:01:10.650246 RTC: period=0x20 (32) 1024 Hz
00:01:10.673464 RTC: period=0x100 (256) 128 Hz
00:01:11.139449 RTC: period=0x200 (512) 64 Hz
00:01:12.028760 Guest Additions capability report: (0x0 -> 0x1) seamless: yes, hostWindowMapping: no, graphics: no
00:01:12.028892 Guest Additions capability report: (0x1 -> 0x5) seamless: yes, hostWindowMapping: no, graphics: yes
00:01:19.558867 Guest Additions capability report: (0x5 -> 0x0) seamless: no, hostWindowMapping: no, graphics: no
00:01:40.308897 NAT: DNS#0: 192.168.1.1
00:01:40.308919 NAT: DNS#1: 192.168.1.16
00:01:40.308924 NAT: DHCP offered IP address 10.0.2.15
00:02:38.948858 NAT: DHCP offered IP address 10.0.2.15
00:03:45.624911 NAT: DNS#0: 192.168.1.1
00:03:45.624936 NAT: DNS#1: 192.168.1.16
00:03:45.624942 NAT: DHCP offered IP address 10.0.2.15
00:04:08.933223 RTC: period=0x20 (32) 1024 Hz
00:04:08.956072 RTC: period=0x100 (256) 128 Hz
00:04:09.948942 RTC: period=0x200 (512) 64 Hz
00:04:16.808279 RTC: period=0x20 (32) 1024 Hz
00:04:16.823503 RTC: period=0x100 (256) 128 Hz
00:04:17.651617 RTC: period=0x200 (512) 64 Hz
00:05:14.430252 NAT: DNS#0: 192.168.1.1
00:05:14.430271 NAT: DNS#1: 192.168.1.16
00:05:14.430276 NAT: DHCP offered IP address 10.0.2.15
00:07:57.342873 NAT: DNS#0: 192.168.1.1
00:07:57.342892 NAT: DNS#1: 192.168.1.16
00:07:57.342897 NAT: DHCP offered IP address 10.0.2.15
00:09:23.477311 NAT: DNS#0: 192.168.1.1
00:09:23.477329 NAT: DNS#1: 192.168.1.16
00:09:23.477335 NAT: DHCP offered IP address 10.0.2.15
00:09:49.528740 RTC: period=0x20 (32) 1024 Hz
00:09:49.550289 RTC: period=0x100 (256) 128 Hz
00:09:50.432289 RTC: period=0x200 (512) 64 Hz
00:10:14.246056 EHCI: USB Operational
00:10:14.277032 EHCI: USB Suspended
00:10:14.339540 OHCI: USB Suspended
00:10:14.350851 Reset initiated by ACPI
00:10:14.350945 Changing the VM state from 'RUNNING' to 'RESETTING'.
00:10:14.351918 CPUM: SetGuestCpuIdFeature: Enabled APIC
00:10:14.351931 PIT: mode=3 count=0x10000 (65536) - 18.20 Hz (ch=0)
00:10:14.375872 AHCI#0: Reset the HBA
00:10:14.375942 PIIX3 ATA: Ctl#1: finished processing RESET
00:10:14.375955 PIIX3 ATA: Ctl#0: finished processing RESET
00:10:14.375987 PDMR3Reset: after    24 ms, 1 loops: 1 async tasks - piix3ide/0
00:10:14.564002 Changing the VM state from 'RESETTING' to 'RUNNING'.
00:10:14.564084 OHCI: root hub reset completed with VINF_SUCCESS
00:10:14.564126 ERROR [COM]: aRC=VBOX_E_IPRT_ERROR (0x80bb0005) aIID={480b372c-c0b5-4c23-9bd7-dcbb85b1594c} aComponent={Display} aText={Could not take a screenshot (VERR_NOT_SUPPORTED)}, preserve=false
00:10:14.566948 Guest Log: BIOS: VirtualBox 4.3.12
00:10:14.567059 PIT: mode=2 count=0x10000 (65536) - 18.20 Hz (ch=0)
00:10:14.577142 PIIX3 ATA: Ctl#1: RESET, DevSel=0 AIOIf=0 CmdIf0=0xa0 (-1 usec ago) CmdIf1=0x00 (-1 usec ago)
00:10:14.577190 PIIX3 ATA: Ctl#1: finished processing RESET
00:10:14.587137 Display::handleDisplayResize(): uScreenId = 0, pvVRAM=0000000000000000 w=720 h=400 bpp=0 cbLine=0x0, flags=0x1
00:10:14.587164 UIFrameBuffer::RequestResize: Screen=0, Format=0, BitsPerPixel=0, BytesPerLine=0, Size=720x400, Sending to async-handler..
00:10:14.587244 UIFrameBufferQImage::resizeEvent: Format=0, BitsPerPixel=0, BytesPerLine=0, Size=720x400
00:10:14.587256 UIFrameBufferQImage::resizeEvent: Resizing to FALLBACK buffer due to format is invalid..
00:10:14.588665 AHCI#0: Reset the HBA
00:10:14.588752 AHCI#0: Port 0 reset
00:10:14.589433 Guest Log: BIOS: AHCI 0-P#0: PCHS=16383/16/63 LCHS=1024/255/63 52428800 sectors
00:10:14.589492 PIT: mode=2 count=0x48d3 (18643) - 64.00 Hz (ch=0)
00:10:14.608699 Display::handleDisplayResize(): uScreenId = 0, pvVRAM=000000000c970000 w=640 h=480 bpp=32 cbLine=0xA00, flags=0x1
00:10:14.608722 UIFrameBuffer::RequestResize: Screen=0, Format=843204434, BitsPerPixel=32, BytesPerLine=2560, Size=640x480, Sending to async-handler..
00:10:14.608797 UIFrameBufferQImage::resizeEvent: Format=843204434, BitsPerPixel=32, BytesPerLine=2560, Size=640x480
00:10:14.608808 UIFrameBufferQImage::resizeEvent: Resizing to directly use VGA device content..
00:10:17.065067 PIT: mode=2 count=0x10000 (65536) - 18.20 Hz (ch=0)
00:10:17.065301 Guest Log: BIOS: Boot : bseqnr=1, bootseq=0231
00:10:17.065488 Guest Log: BIOS: Boot from Floppy 0 failed
00:10:17.065688 Guest Log: BIOS: Boot : bseqnr=2, bootseq=0023
00:10:17.066062 Guest Log: BIOS: CDROM boot failure code : 0004
00:10:17.066222 Guest Log: BIOS: Boot from CD-ROM failed
00:10:17.066427 Guest Log: BIOS: Boot : bseqnr=3, bootseq=0002
00:10:17.066723 Guest Log: BIOS: Booting from Hard Disk...
00:10:17.079274 Display::handleDisplayResize(): uScreenId = 0, pvVRAM=0000000000000000 w=720 h=400 bpp=0 cbLine=0x0, flags=0x1
00:10:17.079300 UIFrameBuffer::RequestResize: Screen=0, Format=0, BitsPerPixel=0, BytesPerLine=0, Size=720x400, Sending to async-handler..
00:10:17.079348 UIFrameBufferQImage::resizeEvent: Format=0, BitsPerPixel=0, BytesPerLine=0, Size=720x400
00:10:17.079356 UIFrameBufferQImage::resizeEvent: Resizing to FALLBACK buffer due to format is invalid..
00:10:17.486200 Display::handleDisplayResize(): uScreenId = 0, pvVRAM=000000000c970000 w=1024 h=768 bpp=24 cbLine=0xC00, flags=0x1
00:10:17.486214 UIFrameBuffer::RequestResize: Screen=0, Format=843204434, BitsPerPixel=24, BytesPerLine=3072, Size=1024x768, Sending to async-handler..
00:10:17.486262 UIFrameBufferQImage::resizeEvent: Format=843204434, BitsPerPixel=24, BytesPerLine=3072, Size=1024x768
00:10:17.486270 UIFrameBufferQImage::resizeEvent: Resizing to FALLBACK buffer due to format is invalid..
00:10:38.296815 AHCI#0: Reset the HBA
00:10:38.313440 Guest Additions information report: Version 4.3.16 r95972 '4.3.16'
00:10:38.313481 Guest Additions information report: Interface = 0x00010004 osType = 0x00037100
00:10:38.313608 Guest Additions capability report: (0x4 -> 0x0) seamless: no, hostWindowMapping: no, graphics: no
00:10:38.313806 Guest reported fixed hypervisor window at 00008400000 (size = 0x2400000, rc = VINF_SUCCESS)
00:11:14.980003 Guest Log: VBoxMP::VBoxDrvFindAdapter: using HGSMI
00:11:15.190526 OHCI: Software reset
00:11:15.190622 OHCI: USB Reset
00:11:15.261797 OHCI: USB Operational
00:11:15.358092 EHCI: Hardware reset
00:11:15.358153 EHCI: USB Operational
00:11:20.083404 NAT: link up
00:11:21.293315 EHCI: USB Suspended
00:11:41.919460 VBVA_INFO_SCREEN: [1] @0,0 0x0, line 0x0, BPP 0, flags 0x3
00:11:41.919549 Display::handleDisplayResize(): uScreenId = 1, pvVRAM=0000000000000000 w=640 h=480 bpp=0 cbLine=0x0, flags=0x3
00:11:41.919557 UIFrameBuffer::RequestResize: Screen=1, Format=0, BitsPerPixel=0, BytesPerLine=0, Size=640x480, Sending to async-handler..
00:11:41.919607 UIFrameBufferQImage::resizeEvent: Format=0, BitsPerPixel=0, BytesPerLine=0, Size=640x480
00:11:41.919617 UIFrameBufferQImage::resizeEvent: Resizing to FALLBACK buffer due to format is invalid..
<b>00:11:41.921300 UIMachineLogicFullscreen: Guest-screen count changed.
00:11:41.921602 UIMachineLogic: Guest-screen count changed.</b>00:11:44.711949 Guest Log: VBoxDisp[0]: VBVA enabled
00:11:44.711977 VBVA_INFO_SCREEN: [0] @0,0 1920x1200, line 0x1e00, BPP 32, flags 0x1
00:11:44.712054 Display::handleDisplayResize(): uScreenId = 0, pvVRAM=000000000c970000 w=1920 h=1200 bpp=32 cbLine=0x1E00, flags=0x1
00:11:44.712065 UIFrameBuffer::RequestResize: Screen=0, Format=843204434, BitsPerPixel=32, BytesPerLine=7680, Size=1920x1200, Sending to async-handler..
00:11:44.712111 UIFrameBufferQImage::resizeEvent: Format=843204434, BitsPerPixel=32, BytesPerLine=7680, Size=1920x1200
00:11:44.712120 UIFrameBufferQImage::resizeEvent: Resizing to directly use VGA device content..
00:11:44.719033 2D is supported!
00:11:44.732622 Display::handleDisplayResize(): uScreenId = 0, pvVRAM=000000000c970000 w=1920 h=1200 bpp=32 cbLine=0x1E00, flags=0x1
00:11:44.732636 UIFrameBuffer::RequestResize: Screen=0, Format=843204434, BitsPerPixel=32, BytesPerLine=7680, Size=1920x1200, Sending to async-handler..
00:11:44.732686 UIFrameBufferQImage::resizeEvent: Format=843204434, BitsPerPixel=32, BytesPerLine=7680, Size=1920x1200
00:11:44.732696 UIFrameBufferQImage::resizeEvent: Resizing to directly use VGA device content..
00:11:44.733895 Guest Log: VBoxDisp[1]: VBVA enabled
00:11:44.733912 VBVA_INFO_SCREEN: [1] @0,0 1920x1200, line 0x1e00, BPP 32, flags 0x1
00:11:44.734009 Display::handleDisplayResize(): uScreenId = 1, pvVRAM=0000000014966000 w=1920 h=1200 bpp=32 cbLine=0x1E00, flags=0x1
00:11:44.734017 UIFrameBuffer::RequestResize: Screen=1, Format=843204434, BitsPerPixel=32, BytesPerLine=7680, Size=1920x1200, Sending to async-handler..
00:11:44.734021 UIMachineLogicFullscreen: Guest-screen count changed.
00:11:44.734422 UIMachineLogic: Guest-screen count changed.
00:11:44.735376 UIFrameBufferQImage::resizeEvent: Format=843204434, BitsPerPixel=32, BytesPerLine=7680, Size=1920x1200
00:11:44.735387 UIFrameBufferQImage::resizeEvent: Resizing to directly use VGA device content..
00:11:44.736256 2D is supported!
00:11:44.738675 VBVA_INFO_SCREEN: [1] @-1920,0 1920x1200, line 0x1e00, BPP 32, flags 0x1

Sep 16, 2014 (modified Oct 9, 2014) • #10

Brett53

12 discussion posts

One interesting tidbit (and correction to the above). The only way I could get the second (left-hand) window to come back was to "power off and on" the VM. Just rebooting wasn't sufficient.

Sep 16, 2014 • #11

Ok, could you attach a DisplayFusion debug log? Here are the steps:

On the Troubleshooting tab, change the Logging drop-down to "Logging: Important Only"
Restart DisplayFusion
Reproduce the issue, note the time so we'll know where to check in the log file
Send us the DisplayFusion.log and DebugInfo.html files (can be found by clicking the Open Log button on the Troubleshooting tab)
Disable debug logging after sending the log

Thanks!

Sep 17, 2014 • #12

Brett53

12 discussion posts

Okay. Issue reproduced. Happened right at 17:23.

Thanks,

Brett

• Attachment [protected]: DebugInfo.html [117,810 bytes]

• Attachment [protected]: DisplayFusion.log [616,164 bytes]

Sep 18, 2014 • #13

Thanks! It seems like it might not be updating the taskbar because it's detecting VirtualBox as full screen. Could you try enabling the "Allow taskbar reloading while a full screen application is running" option on the Settings > Taskbar tab to see if that helps?

Sep 19, 2014 • #14

Brett53

12 discussion posts

Sorry it took so long to get back to you on this. Schedules at work changed and I haven't gotten a chance to test. Sadly, this didn't work. Here's what I did:

- went into DisplayFusion settings > Taskbar and checked "Allow taskbar reloading while full screen applications are running."
- I hit Apply, then hit OK
- I spun up VirtualBox, booted my VM and logged in (both screens showed)
- I minimized the left-hand screen and rebooted my VM
- The left-hand screen was not available, nor was the icon in the taskbar once the VM came back up. The Screen Resolution control panel applet did, however, show two screens.
- I checked DisplayFusion settings - taskbar reloading was still checked
- On a whim, I tried "Reset All Taskbars"--all of the icons showed up in the left-hand taskbar, then went away. Still no love.

Note on the last step, I think I only saw ONE VirtualBox VM icon instead of the expected two.

Oct 1, 2014 • #15

Ok, the one thing I forgot to mention, is that even if I exit DisplayFusion completely, when the VM reboots with the second monitor window minimized, that second monitor window is completely blank, requiring me to set it to a single monitor, apply the settings, and set it to dual monitors again to get it back. Do you run into that as well if you exit DisplayFusion?

Oct 7, 2014 • #16

Brett53

12 discussion posts

Interesting. I started to respond that I hadn't seen the behavior you were describing, so I went to reproduce what you described and actually got the same results. The difference is that I was "resetting" the machine at the logon page rather than actually logging in and doing a "Start... Reboot."

I just followed the following steps:

1. Boot machine with df running
2. Minimized left-hand screen
3. At logon screen, reset the machine
4. Once the machine came back up - left-hand screen was missing.
5. Exited df and reset machine again
6. Machine came back up - no left-hand screen
7. Logged in - STILL no left-hand screen
8. I then shut down cleanly from the start menu (not rebooted)
9. I started the machine from the VirtualBox Manager and it came up with two monitors.

There seems to be something different that happens when you reset, when you restart from the start menu, or you boot fresh from the Virtualbox Manager.

Perhaps that adds some insight?

Brett

Oct 7, 2014 • #17

Ok, interesting! When you say you reset it at the logon screen, do you mean that you're using Machine > Reset in the main window for that VM?

Oct 9, 2014 • #18

Brett53

12 discussion posts

Yes. Sorry I was unclear, I should have been more specific.

Normally, I don't just "reset" my machine because I use it for work. Typically I shut it down from the start menu.

Brett

Oct 9, 2014 • #19

Ok, I'm totally stumped as to why I can't reproduce this issue here. I'll have another go at it next week and see what I can figure out

Oct 10, 2014 • #20

Brett53

12 discussion posts

Weird.

Okay, so more about my configuration:

Dell XPS9100:
- Intel Core i7 960 processor - 1 CPU - 3.2GHz, 4 cores, Hyperthreading enabled
- 18GB RAM
- Windows 8.1 Pro, 64-bit

Video card:
- AMD Radeon HD 7800 series
- Drivers: 12/6/2013, v13.251.0.0
- Both monitors running at 1920 x 1200, primary on left

Running Windows Update, I was fully patched at the beginning of September. It looks as though I have a couple of optional updates. One is actually from AMD for my graphics card.

Can't think of anything else that would really be relevant.

Oct 10, 2014 • #21

Sorry about the way late response on this. I haven't forgotten about this, but I'm totally stumped on what could be happening there. I'm about to test this again to see what I can come up with, but in the meantime, could you try updating to the latest 7.2 Beta and let me know if you still run into this issue?

Feb 6, 2015 • #22

Brett53

12 discussion posts

Keith-

I have some good news for you: I actually encountered this problem once while displayfusion was not running. It appears you're off the hook for the issue. Since then I've upgraded my machine and haven't even encountered the issue, so it might have been a problem with VirtualBox.

Thanks!

Brett

Feb 10, 2015 • #23

Ah ok, glad to hear it's all good now! (and that it wasn't a DisplayFusion bug

)

Please let me know if I can help with anything else!

Feb 10, 2015 • #24

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