qemu and simics simulators both seem to expect that video should be disabled before changing the video mode. references: http://git.qemu.org/?p=qemu.git;a=blob;f=hw/display/vga.c;h=c0f7b343bbab586c8593d29c7a765f1e6ca3662c;hb=HEAD#l727 http://wiki.osdev.org/Bochs_VBE_Extensions#Setting_display_resolution_and_bit_depth Signed-off-by: Chris Ruffin <chris.ruffin@xxxxxxxxx> Reviewed-by: Gerd Hoffmann <kraxel@xxxxxxxxxx> --- drivers/gpu/drm/bochs/bochs_hw.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/bochs/bochs_hw.c b/drivers/gpu/drm/bochs/bochs_hw.c index 4603897..a39b034 100644 --- a/drivers/gpu/drm/bochs/bochs_hw.c +++ b/drivers/gpu/drm/bochs/bochs_hw.c @@ -164,6 +164,7 @@ void bochs_hw_setmode(struct bochs_device *bochs, bochs_vga_writeb(bochs, 0x3c0, 0x20); /* unblank */ + bochs_dispi_write(bochs, VBE_DISPI_INDEX_ENABLE, 0); bochs_dispi_write(bochs, VBE_DISPI_INDEX_BPP, bochs->bpp); bochs_dispi_write(bochs, VBE_DISPI_INDEX_XRES, bochs->xres); bochs_dispi_write(bochs, VBE_DISPI_INDEX_YRES, bochs->yres); -- 1.7.10.4 _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
