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[Qemu-devel] [Bug 1670509] Re: sgabios outputs incorrect video modes
From: |
Herbie Robinson |
Subject: |
[Qemu-devel] [Bug 1670509] Re: sgabios outputs incorrect video modes |
Date: |
Wed, 08 Mar 2017 23:43:09 -0000 |
I don't think my e-mailed patch got through... I'm going to keep
trying, but in case anyone needs the patch in the interim...
** Patch added: "0001-SGABIOS-fix-wrong-video-attrs-for-int-10h-ah-13h.patch"
https://bugs.launchpad.net/qemu/+bug/1670509/+attachment/4834118/+files/0001-SGABIOS-fix-wrong-video-attrs-for-int-10h-ah-13h.patch
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https://bugs.launchpad.net/bugs/1670509
Title:
sgabios outputs incorrect video modes
Status in QEMU:
New
Status in sgabios package in Ubuntu:
New
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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