[haiku-bugs] [Haiku] #5040: Dell Dimension 3100 with LCD screen loses video at end of boot

  • From: "MichaelCrawford" <trac@xxxxxxxxxxxx>
  • Date: Thu, 26 Nov 2009 09:12:09 -0000

#5040: Dell Dimension 3100 with LCD screen loses video at end of boot
-------------------------------------------------+--------------------------
 Reporter:  MichaelCrawford                      |       Owner:  nobody        
     Type:  bug                                  |      Status:  new           
 Priority:  blocker                              |   Milestone:  Unscheduled   
Component:  Audio & Video                        |     Version:  R1/Development
 Keywords:  r34248, video, boot, safe mode, vga  |   Blockedby:                
 Platform:  x86                                  |    Blocking:                
-------------------------------------------------+--------------------------
 This bug occurred while booting the x86 GCC2 Hybrid ISO on a CD-R, version
 r34248 - 2009-11-25.

 I have a Dell Dimension 3100 that has an Intel 82915G / GV / 910 GL
 Express Chipset for the video, according to the Windows XP device manager.
 It has a 2.8 GHz Pentium 4 and 1 GB of RAM.

 The video card has only a VGA connection - no DVI.  I have it connected to
 a 1400 by 900 Acer AL1917W A LCD display with a VGA-to-VGA cable.

 When Haiku boots, I see the progress of the boot icons, then the screen
 goes black, with the display's firmware showing the message "Adjusting
 Config".  I think that might mean it has been set to an unsupported
 resolution.  After a few seconds the config message disappears and then
 the screen just stays black.

 I tried several of the safe video modes.  Standard VGA ended up with a
 screen that was mostly black, but with some small white bars right at the
 top of the screen.  All the other video modes were totally black.

 The unit doesn't have a serial port, but if a PCI serial card would work
 for debugging I could plug one in.

 I have some DVI video cards that might work, but this particular
 configuration should be supported.

 I speculate that what is happening is that the safe video mode is retained
 only during the progress of the boot, with the mode being changed to other
 values at the end of boot, perhaps as a result of auto-detecting the
 display's normal resolution.

 I'd like to learn to write Haiku hardware drivers.  If you can give me a
 little hand-holding, maybe I can debug this myself.

 I'll get back to you with the results of trying a DVI video card.

-- 
Ticket URL: <http://dev.haiku-os.org/ticket/5040>
Haiku <http://dev.haiku-os.org>
Haiku - the operating system.

Other related posts: