Lucid switchuser causes black screen

[emigrant]

On Thu, 2010-05-27 at 11:18 -0700, NoOp wrote:
> On 05/27/2010 06:53 AM, emigrant wrote:
> > On Tue, 2010-05-25 at 20:27 -0700, NoOp wrote:
> >> On 05/24/2010 07:36 PM, arshad wrote:
> ...
> >> > no i'm using ati.
> >> > 
> >> ...
> >> 
> >> I finally just filed a new bug for my issue under the nvidia-96 package:
> >> <https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-96/+bug/585685>
> >> 
> >> 
> > 
> > on a side note,
> > im not only getting black screen,
> > sometimes i get freeze in the login screen once i hit enter after giving
> > the password for my a/c. (the display is still visible)
> 
> That sounds like a ATI KMS/Plymouth issue. You might try booting with
> 'radeon.modeset=0' in your linux line (grub2) or kernel line (grub1) and
> see if that changes anything.
> 
> https://wiki.ubuntu.com/X/KernelModeSetting
> https://launchpad.net/+search?field.text=radeon.modeset%3D0
> 
> 
> 



guys,



Add radeon.modeset=1 to the end of the line GRUB_CMDLINE_LINUX_DEFAULT=.
in /etc/default/grub.

https://wiki.ubuntu.com/X/KernelModeSetting

i dont' know whether this is relevent or not. but it seems the problem
has gone now.. :D

thanks all.