[Bug 1873341] [NEW] Qemu Win98 VM with KVM videocard passthrough DOS mode video is not working for most of games..

[ruthan]

Public bug reported:

Hello,
im using Win98 machine with KVM videocards passthrough which is working fine, 
but when i try Windows 98 - Dosbox mode, there is something work with all 
videocards which i tried PCI-E/PCI - Nvidia, 3Dfx, Matrox.

 Often is framerate is very slow, as slideshow:
Doom 2, Blood, even for Fdisk start - i can see how its slowly rendering 
individual lines, or its not working at all - freeze / black screen only - 
Warcraft 2 demo (vesa 640x480). 

 There is something wrong with it.

 Qemu 2.11 + 4.2, Linux Mint 19.3. Gigabyte Z170 MB.

** Affects: qemu
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1873341

Title:
  Qemu Win98 VM with KVM videocard passthrough DOS mode video is not
  working for most of games..

Status in QEMU:
  New

Bug description:
  Hello,
  im using Win98 machine with KVM videocards passthrough which is working fine, 
but when i try Windows 98 - Dosbox mode, there is something work with all 
videocards which i tried PCI-E/PCI - Nvidia, 3Dfx, Matrox.

   Often is framerate is very slow, as slideshow:
  Doom 2, Blood, even for Fdisk start - i can see how its slowly rendering 
individual lines, or its not working at all - freeze / black screen only - 
Warcraft 2 demo (vesa 640x480). 

   There is something wrong with it.

   Qemu 2.11 + 4.2, Linux Mint 19.3. Gigabyte Z170 MB.

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