VirtualBox

Opened 11 years ago

Last modified 9 years ago

#12629 new defect

Resolution Changes to 640x480 after remote desktop — at Version 9

Reported by: shawnl Owned by:
Component: GUI Version: VirtualBox 4.3.6
Keywords: Cc:
Guest type: Windows Host type: Linux

Description (last modified by Frank Mehnert)

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.

Change History (16)

comment:1 by sunlover, 11 years ago

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

comment:2 by DKHR77, 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 DKHR77, 11 years ago

Attachment: vbox1.JPG added

by DKHR77, 11 years ago

comment:3 by DKHR77, 11 years ago

Today the second scenario I described happened, had to restart the VM. Files attached.

by DKHR77, 11 years ago

by DKHR77, 11 years ago

by DKHR77, 11 years ago

comment:4 by DKHR77, 11 years ago

Allright, I have another one. Does someone take care about the issue or should I stop updating this ticket?

by DKHR77, 11 years ago

comment:5 by DKHR77, 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 sunlover, 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 Doubletwist, 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.

Last edited 10 years ago by Doubletwist (previous) (diff)

comment:8 by sunlover, 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 Frank Mehnert, 10 years ago

Description: modified (diff)

by Sobek, 9 years ago

Attachment: Logs.7z added

VBox.log from 4.3.20 and 4.3.28 with and without crash

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