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| author | Christian Krinitsin <mail@krinitsin.com> | 2025-07-03 07:27:52 +0000 |
|---|---|---|
| committer | Christian Krinitsin <mail@krinitsin.com> | 2025-07-03 07:27:52 +0000 |
| commit | d0c85e36e4de67af628d54e9ab577cc3fad7796a (patch) | |
| tree | f8f784b0f04343b90516a338d6df81df3a85dfa2 /results/classifier/gemma3:12b/vnc/1752646 | |
| parent | 7f4364274750eb8cb39a3e7493132fca1c01232e (diff) | |
| download | qemu-analysis-d0c85e36e4de67af628d54e9ab577cc3fad7796a.tar.gz qemu-analysis-d0c85e36e4de67af628d54e9ab577cc3fad7796a.zip | |
add deepseek and gemma results
Diffstat (limited to 'results/classifier/gemma3:12b/vnc/1752646')
| -rw-r--r-- | results/classifier/gemma3:12b/vnc/1752646 | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/results/classifier/gemma3:12b/vnc/1752646 b/results/classifier/gemma3:12b/vnc/1752646 new file mode 100644 index 000000000..1f6e6a608 --- /dev/null +++ b/results/classifier/gemma3:12b/vnc/1752646 @@ -0,0 +1,23 @@ + +Freezing VNC screen on some the UEFI framebuffer applications + +Hi folks! + +I use TianCore (UEFI) formware on the qemu (master version last commit a6e0344). +When kernel/linux is start, it using UEFI Framebuffer. Then I run UEFI application (which writes directly to the framebuffer) my VNS screen is freezing. Then I restart vnclient I see only one frame. + +When I run application, I getting in the file hw/display/vga.c on function 'vga_ioport_write' some commands, it change "s->ar_index" from 0x20 -> 0x10 + +In the function vga_update_display: +1751 if (!(s->ar_index & 0x20)) { +1752 graphic_mode = GMODE_BLANK; +1753 } else { + +And I got GMODE_BLANK mode. If I patch it: +1751 if (0) { + +my VNC not freezing. + +From "Hardware Level VGA and SVGA Video Programming Information Page" I saw, what ar_index is 0x3C0 (Attribute Controller Data Write Register), 0x20(5-bit) is PAS -- Palette Address Source + +If there is a output via the UEFI framebuffer, does the difference have a PAS or not? Why do we need to pause the output if the PAS is exposed? Especially when the application outputs via framebuffer. \ No newline at end of file |