Bug#769072: Bug#769191: xorg: apt-get dist-upgrade somehow reconfigured my system to use the nvidia driver, even though I have no nvidia hardware

[Simon McVittie]

On Mon, 17 Nov 2014 at 21:47:12 +0000, Nathaniel Smith wrote:
> Here's my apt history files. history.log.1 has the big upgrade that
> caused the problem; history.log has the mucking about I did to fix it.

OK, thanks.

At the top of history.log.1 you have:

Upgrade: ... nvidia-libopencl1:amd64 (340.46-1, 340.46-3) ...

which results in the installation of a pile of nvidia stuff.

I'm not sure why you would gain the other nvidia stuff at that point
if you didn't have it already, because debdiff says
nvidia-libopencl1_340.46-1_amd64.deb and nvidia-libopencl1_340.46-3_amd64.deb
(from snapshot.debian.org) have identical metadata apart from version number
and Installed-Size.

however, nvidia-libopencl1_340.46-3_amd64.deb does have Recommends:
nvidia-opencl-icd | opencl-icd so that would maybe explain it.
Recursively following Depends and Recommends from nvidia-opencl-icd
pulls in the whole nvidia stack.

Next question, why did you have nvidia-opencl-icd in the first place?
I suspect the answer is probably https://bugs.debian.org/739176
which has already been fixed.

    S