desktop-packages team mailing list archive

[teo1978 <teo8976@xxxxxxxxx>]

> Right, that usually doesn't happen when you upgrade to a new version of
> the same driver (for example upgrading nvidia-331 from 331.19 to
> 331.25). However, when you are migrated to a different driver package,
> e.g. from nvidia-331 to nvidia-340, you will lose your settings, because
> they are different packages and they provide different alternatives

Yes, I know. But since in this case installing a different driver
packages was forced by an update (without even a warning or asking for
confirmation, btw), whatever process was responsible for that should
take that into account and take care of "migrating" the settings.

> This, while unfortunate, is not a bug,

Yes it is. You are only giving a diagnosis of the exact cause of the bug
(which by the way I already knew), but that doesn't make it less of a
bug.

>  and we cannot change it, due to
> the way alternatives work.

I seriously doubt that's IMPOSSIBLE to fix. It may not be easy, but if you can do it manually, it can be done automatically. You only need to produce a script that looks at the settings (alternatives, or whatever) before uninstalling the old package, and then applies them (with all the necessary remappings and modifications) after installing the new one.
It may be a lot of work but it's NECESSARY and it was part of fixing this issue. A part that hasn't been done.

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to nvidia-graphics-drivers-331 in Ubuntu.
https://bugs.launchpad.net/bugs/1431753

Title:
  Nvidia binary driver FTBS due to DKMS layer violation

Status in nvidia-graphics-drivers-331 package in Ubuntu:
  Invalid
Status in nvidia-graphics-drivers-331-updates package in Ubuntu:
  Invalid
Status in nvidia-graphics-drivers-340 package in Ubuntu:
  Fix Released
Status in nvidia-graphics-drivers-340-updates package in Ubuntu:
  Fix Released
Status in nvidia-graphics-drivers-346 package in Ubuntu:
  Fix Released
Status in nvidia-graphics-drivers-346-updates package in Ubuntu:
  Fix Released
Status in nvidia-graphics-drivers-331 source package in Trusty:
  Invalid
Status in nvidia-graphics-drivers-331-updates source package in Trusty:
  Invalid
Status in nvidia-graphics-drivers-340 source package in Trusty:
  Fix Released
Status in nvidia-graphics-drivers-340-updates source package in Trusty:
  Fix Released
Status in nvidia-graphics-drivers-346 source package in Trusty:
  Fix Released
Status in nvidia-graphics-drivers-346-updates source package in Trusty:
  Fix Released

Bug description:
  Filing this against the 340-updates version but possibly the same
  applies to older versions, too. The nvidia source package produces two
  individual dkms packages: nvidia-340-updates, nvidia-340-updates-uvm.
  The problem is that the DKMS build of the nvidia-uvm module runs
  compile steps inside the nvidia modules build directory. This is
  violating the DKMS assumption that each module can be build
  independently (there is no way of describing cross-modules
  dependencies and even more important, the autoinstall step after a new
  kernel is installed will run the modules build in parallel).

  Since nvidia and nvidia-uvm are very dependent on each other the right
  course of action seems to be to combine both sources in one DKMS
  module that produces two kernel modules (this is supported by DKMS).
  For the transition this resulting dkms package needs to have a
  breaks/replaces for the nvidia-uvm package.

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