** Description changed:
+ SRU Request
+
+ On some systems bbswitch requires the "skip_optimus_dsm=1" option in
+ order to load properly. So far we have dealt with this problem with
+ system specific quirks based on DMI information. This some times gives
+ us false positives or doesn't cover all systems (it's hard to quirk all
+ systems). We should simply try with and without that option and use
+ whatever works best for the system. This should cover all cases with no
+ need for additional quirks.
+
+
+ [Impact]
+ * Loading bbswitch with the wrong option causes the module to fail from
loading which, in turn, prevents hybrid graphics from working properly.
+
+ [Test Case]
+ * Install the nvidia binary driver, reboot, and check that the NVIDIA GPU is
enabled (attach your /var/log/gpu-manager.log)
+ - Expected: the NVIDIA GPU is enabled.
+ - Bad behavior: the system switches back to the intel driver and the
NVIDIA GPU is not used.
+
+ [Regression Potential]
+ * Low. Systems that currently work will keep working as usual, the ones that
currently fail should finally work.
+
+ [Other Info]
+ * N/A
+
+ --
+
I did a fresh install of 14.04 the day it was released. I use a XPS 15z
laptop form Dell with hybrid graphics (Intel HD 3000 (probably) and Nvidia
Geforce GT 525M). Booting doesn't work out of the box, but by setting
GRUB_CMDLINE_LINUX_DEFAULT="acpi_backlight=vendor dell_laptop.backlight=0
quiet splash"
in /etc/default/grub it works. acpi=off when installing, removed that from
the grub file when installed.
I expected that the Prime feature introduced in kernel 3.12 (kernel
3.13.x here) would let me switch between the Intel and Nvidia cards as i
like, instead of using Bumblebee, which doesn't work properly with
everything. I've installed and tried both the nvidia-331 and nvidia-304
drivers. Exactly the same result from both.
Attempting to switch to the Nvidia card in nvidia-settings (tried on almost
all of the drivers available, including 331.38) resulted in an error message,
in a new window, with no text.
prime-switch in terminal gives this output: Segmentation fault (core dumped)
Sudoing the process gives no output at all. No graphical performance boost
either, still the Intel card...
sudo prime-select nvidia gives this output:
Error: alternatives are not set up properly
Error: nvidia mode can't be enabled
I've also tried Bumblebee (not PPA) a few times, but it's also unable to
switch.
I'm able to use the Intel card temporary, but I would really like to be
able to use the full power of my computer...
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: nvidia-prime 0.6.2
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
CurrentDesktop: Unity
Date: Sat Apr 19 20:52:42 2014
InstallationDate: Installed on 2014-04-17 (1 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
SourcePackage: nvidia-prime
UpgradeStatus: No upgrade log present (probably fresh install)
** Package changed: nvidia-prime (Ubuntu) => ubuntu-drivers-common
(Ubuntu)
** Changed in: ubuntu-drivers-common (Ubuntu)
Importance: Undecided => High
** Changed in: ubuntu-drivers-common (Ubuntu)
Status: Confirmed => In Progress
** Changed in: ubuntu-drivers-common (Ubuntu)
Assignee: (unassigned) => Alberto Milone (albertomilone)
** Also affects: ubuntu-drivers-common (Ubuntu Trusty)
Importance: Undecided
Status: New
** Changed in: ubuntu-drivers-common (Ubuntu Trusty)
Status: New => In Progress
** Changed in: ubuntu-drivers-common (Ubuntu Trusty)
Importance: Undecided => High
** Changed in: ubuntu-drivers-common (Ubuntu Trusty)
Assignee: (unassigned) => Alberto Milone (albertomilone)
** Changed in: ubuntu-drivers-common (Ubuntu)
Status: In Progress => Fix Released
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https://bugs.launchpad.net/bugs/1310023
Title:
14.04: Nvidia Prime is unable to switch to the Nvidia card
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