[Qemu-devel] [Bug 1670509] Re: sgabios outputs incorrect video modes

[Thomas Huth]

Looks like the fix has been included in QEMU's sgabios repository here:

https://git.qemu.org/?p=sgabios.git;a=commitdiff;h=cbaee52287e5f32373181cf

And the binary in the QEMU repository has been updated here:

 https://git.qemu.org/?p=qemu.git;a=commitdiff;h=c8c33fca88fc3ab8a5e4b

So this fix is included in QEMU since version 2.10.


** Changed in: qemu
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1670509

Title:
  sgabios outputs incorrect video modes

Status in QEMU:
  Fix Released
Status in sgabios package in Ubuntu:
  Confirmed

Bug description:
  When run with a bootstrap loader that uses int 0x10 with 0x1301 in
  %ax, incorrect video modes are output to the serial port.  I believe
  the VGA image will be correct.  This might also affect the returned
  values for some interrupts.

  This is caused because the set_cursor_position routine fails to save
  and restore %bx.

  I'm working on a fix for this.

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