DOSBox problems with resolution when EXITING full screen \ VOGONS

DOSBox problems with resolution when EXITING full screen

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First post, by greewn

Posted on 2013-04-11, 16:59

greewn Offline

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Rank: Newbie
Posts: 3
Joined: 2013-04-11, 15:15

Hi everybody, I just installed DOSBox on my Ubuntu 12 system and everything seems to be running fine except for one thing. After going full screen on DOSBox the resolution changes automatically to fit the full screen (with no problem whatsoever) and the program I am running runs perfectly.

The problem happens when I exit full screen or when I close DOSBox. The resolution doesn't revert to my original, pre-fullscreen, Ubuntu resolution.

Please advice and thank you for your help 😜

Reply 1 of 8, by greewn

Posted on 2013-04-12, 15:33

greewn Offline

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Any ideas?

Reply 2 of 8, by 5u3

Posted on 2013-04-12, 15:35

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What is your video card and which drivers do you use for it?

Reply 3 of 8, by Jorpho

Posted on 2013-04-12, 23:14

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Do other SDL apps behave the same way?

To take a wild guess, there's probably some obscure SDL environment variable that will fix the problem, but I have no idea what that would be.

Reply 4 of 8, by greewn

Posted on 2013-04-16, 15:21

greewn Offline

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@Jorpho what does SDL stand for?

@5u3 No separate video card, integrated with the board, intel board and intel drivers. It is a somewhat old Dell Latitude

Reply 5 of 8, by Dominus

Posted on 2013-04-16, 16:55

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LibSDL.org is what SDL is and Dosbox is using that as well as other projects like ScummVM or Exult...
Try those or see if you find some bug report about your distro, libsdl 1.2.15 and fullscreen

Windows 3.1x guide for DOSBox
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DOSBox SVN snapshot for macOS (10.4-11.x ppc/intel 32/64bit) notarized for gatekeeper

Reply 6 of 8, by 5u3

Posted on 2013-04-16, 17:03

5u3 Offline

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I've encountered the same problem in the past running a nvidia card with their proprietary drivers, but the Intel drivers should be much better than that.

Reply 7 of 8, by JENKS

Posted on 2013-04-21, 23:11

JENKS Offline

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I had the same problem with Ubuntu 12.04 LTS and DOSBox.

I changed my dosbox-74.conf file configuration settings to this:

fullscreen=false
fulldouble=false
fullresolution=1600x900
windowresolution=original
output=overlay
autolock=true
sensitivity=100
waitonerror=true
priority=higher,normal
mapperfile=mapper-0.74.map
usescancodes=true

I changed the setting fullresolution=1600x900 to reflect the ubuntu desktop settings. Then changed the setting to output=overlay.

Basically, you need to set the fullresolution= to the ubuntu screen resolution that your using on your desktop outside of dosbox.

Now you can <ALT-ENTER> back and forth with no video screen screw ups.

Reply 8 of 8, by allanwmacdonald

Posted on 2022-12-17, 17:47

allanwmacdonald Offline

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Joined: 2022-12-17, 17:39

@jenks: Many years after your post, I stumbled across this and want you to know that, if you're still listening, your fix solved my issue!

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