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[Martin Pitt <martin.pitt@xxxxxxxxxx>]

The PCI device will exist whether or not the module was loaded; so you
can just iterate over /sys/bus/pci/devices/* (* expands to the PCI bus
IDs) and check the attributes in each directory; e. g. you probably want
to pick out the ones with class == 0x030000 (graphics card), and perhaps
vendor == 10DE (nvidia).

If you want to do that via an udev rule: I'm not entirely sure which
kinds of events you get when the nvidia driver gets loaded. You can
unload it, run

  udevadm monitor -e --udev

then load it, and see what kind of events you get. For sure you'll see
an "add" event for SUBSYSTEM=="module", DEVPATH=="*/nvidia", but either
on boot or when loading the module you should also see an "add" or
"change" event for the graphics card itself.

This is an initial sketch of a rule which selects a PCI card whose
driver is nvidia:

  ACTION=="add|change", SUBSYSTEM=="pci", DRIVER=="nvidia*", RUN+=
"touch /run/nvidia-loaded-for-pci-id-$env{PCI_ID}"

(using "nvidia*" here in case the modules might be called something like
nvidia_123). You can use udev properties like $env{PCI_ID} and also
attributes from sysfs like the above, with e. g. $attr{vendor}. See man
udev(7) for other macros you can use in RUN clauses.

Then you don't need the "remove" rule any more -- if /sys/modules/nvidia
does not exist but your stamp in /run does exist, you know that it was
once loaded but then removed.

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to ubuntu-drivers-common in Ubuntu.
https://bugs.launchpad.net/bugs/1307069

Title:
  gpu-manager causing long startup delays

Status in ubuntu-drivers-common package in Ubuntu:
  Triaged

Bug description:
  I have installing ubuntu 14.04 beta2 and i have update it to latest.
  My computer take 40 seconds for start up from displaying grub until
  displaying LightDM on my SSD. My ubuntu 12.04 only takes up 13 seconds
  for start up on the same SSD.

  reported as bug from question:
  #246899
  https://answers.launchpad.net/ubuntu/+question/246899

  Computer specification:
  Ati Mobility Radeon HD 5650 and using Mesa 10.2 from Oibaf's PPA (the start up time is same as default Gallium Mesa 10.1)
  Processors: Intel Core i5-460M (Arrandale)
  8 GB DDR3 RAM 1333 MHz
  Vendor : Acer Aspire 4745G

  running dmesg | less
  showing:
  intel ips 0000:00:1f.6: ME failed to update for more than 1s, likely hung (many rows)

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: grub2 2.02~beta2-9
  ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
  Uname: Linux 3.13.0-24-generic i686
  NonfreeKernelModules: wl
  ApportVersion: 2.14.1-0ubuntu2
  Architecture: i386
  CurrentDesktop: Unity
  Date: Sun Apr 13 11:25:46 2014
  InstallationDate: Installed on 2014-04-07 (5 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Beta i386 (20140326)
  SourcePackage: grub2
  UpgradeStatus: No upgrade log present (probably fresh install)

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