Changeset 553 in vbox for trunk/src/VBox/Additions

Timestamp:

Feb 2, 2007 2:32:07 PM (18 years ago)

Author:

vboxsync

Message:

Don't disable the extended VBE mode when Windows want's to reset the graphics card. This simply did not work right since we did not reset the mode to the Windows boot mode but we set a mode <current width> x <current height> x 0 bpp which only caused an disturbing additional mode switch when chaning the display resolution. Tested with WinXP and Win2000 guests.

File:

• trunk/src/VBox/Additions/WINNT/Graphics/Miniport/VBoxVideo.cpp (modified) (1 diff)

trunk/src/VBox/Additions/WINNT/Graphics/Miniport/VBoxVideo.cpp

@@ -1286 +1286 @@
    dprintf(("VBoxVideo::VBoxVideoResetDevice\n"));
 
+#if 0
+   /* Don't disable the extended video mode. This would only switch the video mode
+    * to <current width> x <current height> x 0 bpp which is not what we want. And
+    * even worse, it causes an disturbing additional mode switch */
    VideoPortWritePortUshort((PUSHORT)VBE_DISPI_IOPORT_INDEX, VBE_DISPI_INDEX_ENABLE);
    VideoPortWritePortUshort((PUSHORT)VBE_DISPI_IOPORT_DATA, VBE_DISPI_DISABLED);
+#endif
 
    return TRUE;