Dual Monitor Startup Problem on MacPro - Solved

Question

I have a model 53135LL/A = mid 2010 MacPro with 8 cores, DUAL monitor cards and monitors, 24GB memory, running Lion 10.7.3.  It is important to note that I am also using the Apple bluetooth Magic Mouse and the smaller, bluetooth keyboard (no numeric keypad).  This unit was supplied with Lion in December 2011 and has had a startup problem from the beginning as follows:
1 - when starting from a cold start the dual monitor positions are reversed from the correct position
2 - additionally the USB and firewire connected devices (e.g. Wacom tablet, 2 card readers) do not function properly.
The workaround for me has been to start the system, wait for the logon screen, then click restart. Upon restart everything comes up and functions correctly.
Specifics on my setup and starting problems:
1 - My main monitor (Monitor #2) is a large gamut monitor that is located to the right. This monitor is connected to card slot 1 as that is the faster card slot (pcx16). The second monitor (Monitor #1) is an ordinary unit and connected to card slot 2 (pcx4). The monitors are set up as an extended desktop.
2. The Wacom tablet (Intuous 3 wide) is connected to USB port on rear of machine. CF card reader by Delkin is connected to Firewire on rear of machine, and an SD card reader is connected to USB on the rear of the machine.
3. My dock is positioned on the left side of the left monitor. The menu bar is along the top of the left monitor, and all desktop icons are on the left monitor.  The right monitor has no items on it.
On a typical cold start, as mentioned above, the apple logo appears on the right and then the logon screen appears on the right. 
If I proceed to logon at that point, all the desktop items move to the right monitor and the computer thinks the positions are reversed.  In other words, it behaves as though the right monitor (#2) is on the left of the desktop and left monitor (#1) is on the right. 
Additionally, the Wacom tablet using either pen or mouse does not map over the full desktop range.  If I use either card reader and then eject the card, no further card insertions will be recognized.
To fix this, I simply restart the machine thru the apple menu and everything comes up correctly.
I had discovered, that instead of completing the logon on a bad cold start, I could simply restart from the logon screen and all would work correctly.
On occasion, the logon screen would come up on the left monitor (as it should do) and in that case, if I log on all works correctly.
I have worked with Apple support on the phone, clearing setup ram etc. Have had the unit in to Apple store for hardware check, all OK.  Next suggestion was reload OS and start over - no thanks.
SO - Here is the latest.
If I turn off my keyboard and mouse before starting the machine, then wait for the logon screen to appear - It starts correctly, with the logon screen on the left.  I can then turn on my keyboard and mouse and all works as it should.
Bottom line - there appears to be a startup issue with Bluetooth devices from a cold start.  Note that once the machine has been used for a bit, I can turn it off for short periods of time (e.g. 30 minutes) and it will start correctly even with the mouse and keyboard turned on.

Answer 1

mkaito wrote:
That's how dwm behaves. I believe dwm's multihead support is rather lackluster out of the box. You might want to check out some of the patches they have, and ask around in the dwm hackers thread.
I currently have dwm simply draw status on all monitors, but I'm investigating separate status bars per monitor. We'll see where that takes me. Dwm is a tinker's WM!
i found the patch , thanks!