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id = 1585
title = "Incorrect VGA text mode rendering"
state = "opened"
created_at = "2023-04-08T02:58:20.009Z"
closed_at = "n/a"
labels = []
url = "https://gitlab.com/qemu-project/qemu/-/issues/1585"
host-os = "Ubuntu in WSL2 with X-Forwarding"
host-arch = "x86_64"
qemu-version = "6.2.0"
guest-os = "[TheDevMinerTV/os](https://github.com/TheDevMinerTV/os)"
guest-arch = "i386"
description = """All of my physical machines use black as `DarkGray` and have the text starting from `White+DarkGray` blink (watch the video below). The ISO I'm using is a minimal kernel I've written to check VGA text mode (provided by the BIOS at `0xb8000` with a 80x25 resolution) handling on multiple emulators and machines.
Changing the emulated CPU and display driver doesn't change this behaviour.
Hyper-V: color test shows correct colors, all text starting from `White+DarkGray` is blinking
AMD Athlon 64 X2 6000+ + NVIDIA Quadro 400 on actual hardware: same as Hyper-V
I've tested this with multiple physical GPUs and they all have the same behaviour and color palette.
QEMU: dark gray is the wrong color and the text doesn't blink
Changing the emulated device doesn't change this behaviour.
I think QEMU should emulate the hardware as close as possible and therefore atleast have the blinking text.
Consider this a low priority issue."""
reproduce = """1. Download ISO from the link above
2. Run the QEMU command above
3. See the text not blink"""
additional = """"""
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