ubuntu-x-swat team mailing list archive

[Geoff McClinsey <713867@xxxxxxxxxxxxxxxxxx>]

The cut and paste below was my comment on your other bug.  So i just
wanted to include it. This bug posting though explains exactly what was
happing to me right down to the blinking _ in the upper left and
freezing, however for me it also kicks off the display completely and am
presented with a no connected device message on my screen.

The reason why there is nothing you can do to get out of it (exept
powerdown the pc or wait as after a few minutes it will restart itself)
is because at the time the display crashed it was also brining down your
keyboard. The keyboard would normally be brought back up right after
display did not load the keyboard did not boot up. You will notice when
this happens by all the keyboard lights going out.

I came to this conclusion after realising in a working install
environment the keyboard is brought down and back up right before gdm
kicks in.



##### CUT/PASTE my comment on bug #661235 #####

You wouldn't by any chance have a dual display set-up or be using a non
VGA connection are you.  Even if your are not check your bios and see if
dual display is enabled (Advanced Chipset in my bios).

I found if it is enabled and set to primary video AUTO or PCI-E and you
are using a (in my case) HDMI connection the install will fail. Fails
right after plymouth and just flashes a blinking _ in the upper left.
Eventually displays Samsungs default NO Connection Msg.

My Setup is:
1 TV Plugged in threw HDMI
1 CRT monitor plugged in threw onboard VGA

BIOS  / Advanced Chipset

1.)

Dual Display - Enabled   //  Primary Video - Auto   ---> Will NOT work (displays on flatscreen)
Dual Display - Enabled   //  Primary Video - PCI-E   ---> Will NOT work
Dual Display - Enabled   //  Primary Video - VGA    ---> Works Everytime (if you also have a old CRT monitor connected)

2.)

Dual Display - Disabled   //  Primary Video - Auto   ---> WORKS (displays on flatscreen)
Dual Display - Disabled   //  Primary Video - PCI-E  --->  WORKS
Dual Display - Disabled   //  Primary Video - VGA     --->  WORKS

* I recall one of the above 3 getting past install but then failing
after restart with same black screen. I think it was auto. Unfortunately
I forgot to document that one. But I have documented that PCI-E did
work, so its not clear to me why auto would fail and PCI-E would work
when they both were using the PCI-E connection. This might have just
been a mishap but after trying to install so much once it got installed
I did not want to try to recreate problem. Can someone verify?

3. (HDMI Connection and a VGA to DVI Adapter Connection)

Dual Display - Enabled   //  Primary Video - Auto   ---> WORKS (displays on flatscreen)
Dual Display - Enabled   //  Primary Video - PCI-E   ---> WORKS
Dual Display - Enabled   //  Primary Video - VGA    ---> WORKS

So to me it appears this driver does not work properly with the BIOS
having Dual Display Enabled.

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https://bugs.launchpad.net/bugs/713867

Title:
  Live-CD and Installed Ubuntu freeze on boot with GeForce 210 / Nouveau