id,summary,reporter,owner,description,type,status,component,version,resolution,keywords,cc,guest,host 12461,Second monitor resolution disappeared after upgrading to VBox 4.3.4,Rafcio,,"There is a definite regression in guest display driver in the 4.3.4 version. When I upgraded from 4.3.2 to 4.3.4 I was unable to set 16x9 resolution for the second monitor. All that was left were only 4x3 resolutions. Here is a detailed description. My second display native resolution is 1680x1050. I was never able to chose this resolution as there always was a bug in the (display driver?) code (see ticket 10671). BTW, I couldn't ""fix"" this old bug or the new bug with any command (VBoxManage setextradata..., controlvm... setvideomodehint..., etc.). Nothing worked. I was able to use 1600x900 resolution for my second display, which is the native resolution of the built in laptop display (Thinkpad T420), the first monitor. That was a workaround until I upgraded to 4.3.4 code. When that happened the resolution for the second display has changed to some low resolution (1024x768 if I remember correctly). I was unable to set any 16x9 resolutions (anything close to 1680x1050 or 1600x900), because the resolutions were gone from the available choices. All that was left were 4x3 resolutions. I found a workaround though, which is also a proof that there is a regression in 4.3.4 code. I rolled back the driver for VirtualBox Graphics Adapter in the client (Windows XP) to 4.3.2 code and that restored the 1600x900 choice for the second monitor. There is still no 1680x1050 though, but I didn't expect that.",defect,closed,guest additions,VirtualBox 4.3.4,obsolete,,,Windows,Linux