Comment 13 for bug 727979

I have the same problem on natty64 with VGA video projectors.

I tested it with two computers with two different drivers (xf86-video-ati, xf86-video-nouveau).
I tested it with three different video projector.
I tested it with three different VGA cables.
I tested it with kernels 2.6.35, 2.6.37, 2.6.38
I tested it with libdrm(i.e. libkms) 2.4.21, 2.4.23 (remark here i didn't reboot)

And it always flickered (with exception 3. projector see below).

Remark with two of three projectors I used addmode since the drivers didn't recognize the native resolution of the beamer.

Everything always worked well if I used my old Gentoo (2.6.33 - but with KMS,ati and with addmode)

With the 3. projector in natty it worked properly because it recognized the native resolution. But if I
added an other resolution to it and changed to that it flickered again.

so it's possible It has some thing to do with --addmode

I think this worked on Maverik but I'm not sure since I didn't use --addmode much
Did any of the others here use addmode?