Bug#598624: xserver-xorg-video-intel: 830M crashes with 'Failed to submit batchbuffer: Input/output error'

[Alexander Heinlein <alexander.heinlein@web.de>]

On Fri, Oct 01, 2010 at 12:36:06PM +0200, Sven Joachim wrote:
> Am 01.10.2010 um 12:19 schrieb Alexander Heinlein:
> 
> > Another thing that bothers me with the new kernels is that I have to enable
> > KMS to use the intel driver, but disable it if I want to use vesa (the
> > current fallback for me). Changing the bootloader configuration and
> > rebooting just to switch the graphics driver doesn't seem right.
> 
> You can use fbdev instead of vesa as fallback, it works fine with KMS
> (but does not do any mode setting, so you can't change the resolution).
>
Using fbdev leads to a lockup of the whole system. Blank monitor, no
keyboard input any more, even SSH doesn't work. Seems like a kernel panic or
something similar. But I guess this belongs to a separate bug report.

Also I recognized when using vesa and disabling KMS, I can't switch back to
a virtual console or the screen goes blank. Even switching back to X leaves
me with a blank screen. But I guess this belongs to a separate bug report,
too :).

Man, I can remember graphics drivers being less complicated under Linux five
years ago, what happened to them?

Regards,
Alex