2.6.13 ati (ibook) frambuffer problem
benh at kernel.crashing.org
Sat Oct 15 07:58:25 EST 2005
On Fri, 2005-10-14 at 14:38 +0200, Joerg Dorchain wrote:
> after upgrading to a vanilla 2.6.13 kernel (from 2.6.12) there seems to
> be a problem with the framebuffer driver I use for my ibook. The display
> statz at the opnpic message, and after a while the machine reboot (looks
> like panic().
> Can someone confirm? Or better, point me to a patch ;-)?
> For given reason, what is the common method to debug crashes before the
> display is working?
This looks like a bug that was introduced by linus in 2.6.13 and that I
_think_ should be fixed in the stable series, so if you get 2.6.13.x (x
= latest stable release) it should work.
Usually, to debug those crashes, I'm adding a hack to kernel/printk.c to
call btext_drawstring() (with some test to make sure to do that not too
early, typically only after setup_arch has been called).
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