Opened 11 years ago
Last modified 9 years ago
#12629 new defect
Resolution Changes to 640x480 after remote desktop
| Reported by: | shawnl | Owned by: | |
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| Component: | GUI | Version: | VirtualBox 4.3.6 |
| Keywords: | Cc: | ||
| Guest type: | Windows | Host type: | Linux |
Description (last modified by )
I have a Windows 7 guest running on an Ubuntu host. I can remote desktop to the Windows7 guest without issue. After closing remote desktop, virtual box resolution is now set to 640x480. The only way to resolve is to shutdown and restart virtual box guest.
Steps to reproduce
- Start Windows 7 Guest
- Login to Guest
- Move to new workstation and remote desktop to guest
- logout of remote desktop
- attempt to login to the console of Windows 7 guest
Using Virtual Box 4.3.6 with Guest Addons. This issue hass been present on several past versions as well.
Attachments (7)
Change History (18)
comment:1 by , 11 years ago
comment:2 by , 11 years ago
I've a similar issue, reproducable 10%. Host PC (Win-7 64) with 2 monitors, VM (Win-7 32) runs in windowed mode maximized on the second monitor. I lock the host PC and later on I open a remote desktop on my VM from home. The next day in the office sometimes the resolution has changed to 640x480, 256 or less colors. The VM window is still maximized. When double-clicking the title bar, it resizes to the VM resolution (see screenshot).
Then, two things can happen when i log on. Sometimes the VM window jumps to the primary monitor, chages resoultion and color mode back and i can continue to work. But every now and then the other case happens: the resolution does not change, I've to restart the VM.
by , 11 years ago
by , 11 years ago
| Attachment: | Win7-32-2014-01-24-07-36-33.log added |
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comment:3 by , 11 years ago
Today the second scenario I described happened, had to restart the VM. Files attached.
by , 11 years ago
| Attachment: | Win7-32-2014-02-11-07-40-49.png added |
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by , 11 years ago
| Attachment: | Win7-32-2014-02-11-07-40-49.log added |
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by , 11 years ago
| Attachment: | Win7-32-2014-02-11-07-40-49.vbox added |
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comment:4 by , 11 years ago
Allright, I have another one. Does someone take care about the issue or should I stop updating this ticket?
by , 11 years ago
| Attachment: | Win7-32-2014-02-19-10-01-00.log added |
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comment:5 by , 11 years ago
To clarify: It seems that the order of steps could be relevant. Today I moved the VM from screen 2 to 1, but didn't maximize it before I tried to log on. After entering password and <ENTER>, the VM window size changed and color depth restored. Then I moved it back to Screen 2 and maximized it.
Last time (Feb. 11th), as far as I remember, I first maximized the VM before I tried to log on, which did not restore resolution/color depth.
comment:6 by , 11 years ago
Thanks for the update. We will have to reproduce the problem here and such details help. The VBox.log alone does not tell the whole story.
We definitely will look at the problem. However I can't promise a quick fix.
comment:7 by , 10 years ago
I also have this exact same issue, and it has been present in different versions over the years. This VM is running on my workstation in the office. I often have to RDP into it from home using rdesktop client in Linux. When I get back to the office the next day, 90% of the time my VM guest has switched to 640x480 and the only way I've found to recover is to reboot the VM.
Currently running: Virtualbox 4.3.16 r95972 Host: Debian Wheezy running XFCE Guest: Windows 7 Enterprise SP1
I've tried several variations of video settings, 2D, 3D, no accel etc - and it never seems to make a difference.
I will note that my guest is usually set to Scaled Mode. I don't believe I've tested it in other modes.
comment:8 by , 10 years ago
Doubletwist, please attach VBox.log from a session where the guest switched to 640x480.
Unfortunately we could not reproduce this problem.
comment:9 by , 10 years ago
| Description: | modified (diff) |
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comment:10 by , 9 years ago
I have the same issue.
I encountered the crash with a lot of versions of the 4.3.x tree of VirtualBox. I cannot remember when it started, though.
The resolution of the guest display is reduced from 1920x1081 pixel 32 bit color depth to 640x480 pixel 8 bit color depth.
This happens only with a remote desktop connection from a remote computer to the guest.
I can reproduce the problem with a high probability.
The option 'Auto-resize Guest Display' is on. I tried several different video modes/options (2D, 3D accelleration; amount of memory etc.) to no avail.
The duration of the remote desktop connection does not matter as far as I can see. Maybe the resolution reduction happens while establishing the remote desktop connection?
Currently running:
VirtualBox 4.3.28_RPMFusion r100309
Host: Fedora 20 x86_64
Guest: Windows 7 32 bit Enterprise SP1
VirtualBox Guest Additions have been installed.
In the past I used the the binary supplied by 'virtualbox.org'. For ease of installation/updates I switched to RPMfusion. Both had this issue.
Attached archive contains 'VBox.log' files from sessions with the display crash of the guest to 640x480 pixel.
From different VirtualBox versions with and without crash. Lines that contain the string 'w=640' seem to indicate the display resolution reduction.
Yesterday, I updated the whole software stack of my host. VirtualBox and Guest Additions were updated to 4.3.28. Today, the display resolution reduction happened again.
comment:11 by , 9 years ago
crash happened again with: VirtualBox 4.3.32_RPMFusionr103443 Host: Fedora 22 x86_64 Guest: Windows 7 32 bit Enterprise SP1
Last week I changed the guest. Guest: Windows 7 64 bit Enterprise SP1
Up until now the guest display reduction did NOT happen again. Even with remote desktop connection that crashed the 32 bit guest display immediately. All other settings remained the same.


Please attach VBox.log of the VM where the problem happened.