summary refs log tree commit diff stats
path: root/gitlab/issues_text/target_missing/host_missing/accel_missing/1585
diff options
context:
space:
mode:
authorChristian Krinitsin <mail@krinitsin.com>2025-05-30 16:52:07 +0200
committerChristian Krinitsin <mail@krinitsin.com>2025-05-30 16:52:17 +0200
commit9260319e7411ff8281700a532caa436f40120ec4 (patch)
tree2f6bfe5f3458dd49d328d3a9eb508595450adec0 /gitlab/issues_text/target_missing/host_missing/accel_missing/1585
parent225caa38269323af1bfc2daadff5ec8bd930747f (diff)
downloadqemu-analysis-9260319e7411ff8281700a532caa436f40120ec4.tar.gz
qemu-analysis-9260319e7411ff8281700a532caa436f40120ec4.zip
gitlab scraper: download in toml and text format
Diffstat (limited to 'gitlab/issues_text/target_missing/host_missing/accel_missing/1585')
-rw-r--r--gitlab/issues_text/target_missing/host_missing/accel_missing/158527
1 files changed, 27 insertions, 0 deletions
diff --git a/gitlab/issues_text/target_missing/host_missing/accel_missing/1585 b/gitlab/issues_text/target_missing/host_missing/accel_missing/1585
new file mode 100644
index 000000000..933a20874
--- /dev/null
+++ b/gitlab/issues_text/target_missing/host_missing/accel_missing/1585
@@ -0,0 +1,27 @@
+Incorrect VGA text mode rendering
+Description of problem:
+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
+
+![Hyper-V](/uploads/0d6e9a2398d0f5aeca94e6fbbc31e055/image.png)
+
+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.
+
+![AMD Athlon 64 X2 6000+ + NVIDIA Quadro 400](/uploads/883484cea78f8d598634ebab3645341c/image.png)
+
+QEMU: dark gray is the wrong color and the text doesn't blink
+Changing the emulated device doesn't change this behaviour.
+
+![QEMU](/uploads/cf1e6a1e7e8bcfc48b60bd92d9024de5/image.png)
+
+I think QEMU should emulate the hardware as close as possible and therefore atleast have the blinking text.
+Consider this a low priority issue.
+Steps to reproduce:
+1. Download ISO from the link above
+2. Run the QEMU command above
+3. See the text not blink
+Additional information:
+![Demo of various machines](/uploads/9de70ecd2185bdb57b3ee324fe18dcd9/2023-04-08_04-56-05.mp4)