I believe this probably is not jockey's fault but rather nvidia-current,
based on the contents of the file (seen from dupe bug 981048):
$ cat nvidia-current-updates_hybrid.conf
# This file was installed by nvidia-current-updates
# Do not edit this file manually
blacklist nouveau
blacklist lbm-nouveau
alias nouveau off
alias lbm-nouveau off
prevents nouveau from working and as such the system cannot boot
** Also affects: nvidia-graphics-drivers (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/956091
Title:
Jockey does not remove 'nouveau' driver blacklist when deactivating
nvidia driver
Status in “jockey” package in Ubuntu:
Confirmed
Status in “nvidia-graphics-drivers” package in Ubuntu:
Confirmed
Bug description:
I decided to try out the nVidia binary driver again as I had found an
application that required it. After I was done, I used Jockey to
switch back to the 'nouveau' open source driver instead.
After rebooting, my machine came up using only the VESA driver, with
the usual VESA limitations (reduced resolution, no choice of external
monitors, etc). I did some troubleshooting and discovered that the
'nouveau' kernel driver was not being loaded.
I did some further digging and discovered that a file had been left
behind from the nvidia driver:
/etc/modprobe.d/nvidia-current_hybrid.conf
This file explicitly disables the 'nouveau' driver, leaving the
machine without graphics. None of the GUI utilities can identify this
to the user.
Jockey should be ensuring that 'nouveau' is not blacklisted any more
when the user tries to switch back to the open source driver!
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: jockey-gtk 0.9.7-0ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-18.29-generic 3.2.9
Uname: Linux 3.2.0-18-generic x86_64
ApportVersion: 1.94.1-0ubuntu2
Architecture: amd64
CurrentDmesg:
[ 33.805710] vboxdrv: fAsync=0 offMin=0x193 offMax=0x2759
[ 33.805768] vboxdrv: TSC mode is 'synchronous', kernel timer mode is
'normal'.
[ 33.805770] vboxdrv: Successfully loaded version 4.1.8 (interface
0x00190000).
[ 34.012700] vboxpci: IOMMU not found (not registered)
[ 41.906647] eth0: no IPv6 routers present
Date: Thu Mar 15 08:10:34 2012
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
MachineType: LENOVO 4318CTO
PackageArchitecture: all
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-18-generic
root=UUID=a24ff0fd-7738-40a0-aeb2-913870f549a5 ro quiet splash vt.handoff=7
SourcePackage: jockey
UpgradeStatus: Upgraded to precise on 2012-02-22 (21 days ago)
dmi.bios.date: 06/07/2010
dmi.bios.vendor: LENOVO
dmi.bios.version: 6NET61WW (1.24 )
dmi.board.name: 4318CTO
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias:
dmi:bvnLENOVO:bvr6NET61WW(1.24):bd06/07/2010:svnLENOVO:pn4318CTO:pvrThinkPadW510:rvnLENOVO:rn4318CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 4318CTO
dmi.product.version: ThinkPad W510
dmi.sys.vendor: LENOVO
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