[Qemu-devel] [Bug 1795799] [NEW] Cirrus video, graphical corruption, bad fonts

[1448412]

Public bug reported:

The error
===

I started qemu by

`shell
$ ./qemu-system-i386 -serial stdio -cdrom /dev/cdrom -vga cirrus
S1111111111S1111111111S1111111111S1111111111▒*n*n*n*n
`

with the original suse7.0 cd 1 in the cdrom drive (I think
https://archive.org/details/suse-7.0_release_i386 has the image). After
some console output (that uses a vga framebuffer which seems to work
fine) the suse installer is started. It is displayed mostly correct, but
several text passages are completely garbled.

I noticed the same type of corruption when trying to run an old XF86
SVGA Server on a SuSE 6.2 System using the `-vga cirrus` option.

Therefore I think that the cirrus emulation might not work as intended
any more.

Qemu version
===

I used  qemu-w64-setup-20180815.exe provided by
https://qemu.weilnetz.de/w64/

./qemu-system-i386 -version
QEMU emulator version 3.0.0 (v3.0.0-11723-ge2ddcc5879-dirty)
Copyright (c) 2003-2017 Fabrice Bellard and the QEMU Project developers

Hope you can fix it.

Best regards!

** Affects: qemu
     Importance: Undecided
         Status: New

** Attachment added: "Corrupted Fonts in SuSE70 installer"
   
https://bugs.launchpad.net/bugs/1795799/+attachment/5196372/+files/2018-10-03%2008_24_56-QEMU_-_Cirrus_Fail.png

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https://bugs.launchpad.net/bugs/1795799

Title:
  Cirrus video, graphical corruption, bad fonts

Status in QEMU:
  New

Bug description:
  The error
  ===

  I started qemu by

  `shell
  $ ./qemu-system-i386 -serial stdio -cdrom /dev/cdrom -vga cirrus
  S1111111111S1111111111S1111111111S1111111111▒*n*n*n*n
  `

  with the original suse7.0 cd 1 in the cdrom drive (I think
  https://archive.org/details/suse-7.0_release_i386 has the image).
  After some console output (that uses a vga framebuffer which seems to
  work fine) the suse installer is started. It is displayed mostly
  correct, but several text passages are completely garbled.

  I noticed the same type of corruption when trying to run an old XF86
  SVGA Server on a SuSE 6.2 System using the `-vga cirrus` option.

  Therefore I think that the cirrus emulation might not work as intended
  any more.

  Qemu version
  ===

  I used  qemu-w64-setup-20180815.exe provided by
  https://qemu.weilnetz.de/w64/

  ./qemu-system-i386 -version
  QEMU emulator version 3.0.0 (v3.0.0-11723-ge2ddcc5879-dirty)
  Copyright (c) 2003-2017 Fabrice Bellard and the QEMU Project developers

  Hope you can fix it.

  Best regards!

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