OS/2, eCS & ArcaOS - Technical > Virtualization
Win-OS/2 - Open vbesvga.drv video driver
Doug Clark:
Martin,
I tried the vbesvga.drv driver on a bare metal machine booting CSM (BIOS). It works in Win-OS/2 full screen and DOS full screen; the mouse pointer seems slightly less jumpy than when running "normal" Win-OS/2 full screen session. Neither the VBESVGA.DRV nor the "normal" driver will run seamless Win-OS/2 or seamless DOS sessions.
Martin Iturbide:
Hi Doug
It is good that you see at least the mouse improvement in Win-OS/2 full screen session. I don't know if this improves something on the DOS VDM, I don't think so, but I may be wrong.
By any chance did you tried the vio-1.0.wpi patch and try if it works for your windowed sessions?
- https://mantis.arcanoae.com/view.php?id=1193
Does this patch applies today with ArcaOS 5.1.1 ?
Just in case, I have some personal notes and links here:
- https://www.os2world.com/wiki/index.php?title=DOS_and/or_WIN-OS/2_Sessions_Problems_on_ArcaOS
There is also this from Arca Noae:
--- Quote ---If you have a need for DOS and/or Win-OS/2 sessions you will need to install ArcaOS in UEFI mode so that the installer will install a compatible VESA emulator. You could disable the CSM (legacy support) in the BIOS settings, or just make sure the system boots the installer in UEFI mode.
--- End quote ---
Source: https://www.arcanoae.com/wiki/arcaos/known-issues/#doswin
Regards
Roderick Klein:
--- Quote from: Martin Iturbide on August 16, 2025, 09:25:09 pm ---Hi Doug
It is good that you see at least the mouse improvement in Win-OS/2 full screen session. I don't know if this improves something on the DOS VDM, I don't think so, but I may be wrong.
By any chance did you tried the vio-1.0.wpi patch and try if it works for your windowed sessions?
- https://mantis.arcanoae.com/view.php?id=1193
Does this patch applies today with ArcaOS 5.1.1 ?
Just in case, I have some personal notes and links here:
- https://www.os2world.com/wiki/index.php?title=DOS_and/or_WIN-OS/2_Sessions_Problems_on_ArcaOS
There is also this from Arca Noae:
--- Quote ---If you have a need for DOS and/or Win-OS/2 sessions you will need to install ArcaOS in UEFI mode so that the installer will install a compatible VESA emulator. You could disable the CSM (legacy support) in the BIOS settings, or just make sure the system boots the installer in UEFI mode.
--- End quote ---
Source: https://www.arcanoae.com/wiki/arcaos/known-issues/#doswin
Regards
--- End quote ---
That VIO patch is only for an extremely small subset of Thinkpad systems and in genereal should not be installed on any other systems.
Roderick
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