Re: Xorg fails on ATI after update (mmio aperture)

[Riccardo Mottola <riccardo.mottola@libero.it>]

Hi,

John Paul Adrian Glaubitz wrote:
> Then you need to provide as many datapoints as possible. Trying to 
> bisect the
> kernel version which broke the driver is already the right idea.
>
> I would start working with snapshot.debian.org to find the Debian kernel
> version which broke the driver. Then we can inspect the changes for the
> first bad version and possibly continue with "git bisect" if we cannot find
> any obvious change.

Avoiding doing all setup to compile my own kernels would be welcome! I 
thus proceeded with snapshots


How can I know when an update was available? Or, better which 
intermediate versions are or have been available between my two kernels 
versions?

I tested both 4.7 and 4.8 series I found in snapshots.

4.7.5.1 -> original, worked
4.7.8.1 -> works

For the 4.8 series instead:

4.8.0-rc8-powerpc #1 Debian 4.8~rc8-1~exp1 (2016-09-26)
4.8.0-1 Debian 4.8.5 -> broken

Since I saw no other 4.7 series, I can see that the breakage happened 
already in the 4.8 series:, somewhere between:
linux-image-4.8.0-rc8-powerpc_4.8~rc8-1~exp1_powerpc.deb : 2016-09-29 
04:29:33
linux-image-4.8.0-1-powerpc_4.8.5-1_powerpc.deb : 2016-11-02 03:31:50

I couldn't find any intermediate version to test (or later series of the 
4.7.x) , if there is one, please tell me. Does this however gives you 
already a clue?
It could be of course both in the kernel itself as in some configuration.

Riccardo