Bug#813848: bumblebee: bbswitch will not disable nvidia card after optirun finishes.

[Luca Boccassi]

Control: tag -1 moreinfo unreproducible

On Fri, 2016-02-05 at 23:05 +0000, Gary Preston wrote:
> Package: bumblebee
> Version: 3.2.1-10~bpo8+1
> Severity: normal
> 
> Dear Maintainer,
> 
>    * What led up to the situation?
> 
>    Installed nvidia-kernel-dkms 352 from jessie-backports.
> 
>    * What exactly did you do (or not do) that was effective (or
>      ineffective)?
> 
>    After installation, rebooted and found that after running 
>    optirun for the first time, /proc/acpi/bbswitch would still
>    report ON after optirun had finished.
> 
>    Stopping the bumblebeed service and "rmmod nvidia" then running
>    bumblebeed -vv showed everything was normal during start up, 
>    however upon quitting optirun the log shows:
> 
> 
> [  341.192631] [DEBUG]Socket closed.
> [  341.192746] [DEBUG]Socket closed.
> [  341.192751] [INFO]Stopping X server
> [  341.264275] [DEBUG]Process with PID 3275 returned code 0
> [  341.264357] [INFO]Unloading nvidia driver
> [  341.264443] [DEBUG]Process modprobe started, PID 3296.
> modprobe: FATAL: Module nvidia not found.
> [  341.264997] [DEBUG]Process with PID 3296 returned code 1
> [  344.270780] [ERROR]Unloading nvidia driver timed out.
> [  344.270810] [DEBUG]Drivers are still loaded, unable to disable card
> [  344.270823] [DEBUG][XORG] (II) UnloadModule: "mouse"
> [  344.270826] [DEBUG][XORG] (II) NVIDIA(GPU-0): Deleting GPU-0
> [  344.270828] [DEBUG][XORG] (EE) Server terminated successfully (0).
> Closing log file.
> 
>   The "nvidia" kernel module remained loaded and bbswitch was
>   unable to switch the nvidia card to OFF. Running "modprobe -r
>   nvidia" manually brought up the same error, instead I had to
>   run either:
> 
>   modprobe -r nvidia-current
> 
>   or 
> 
>   rmmod nvidia
> 
>   If I create a sym link from nvidia-current.ko to nvidia.ko and
>   from nvidia-current-uvm.ko to nvidia-uvm.ko then run depmod -a
>   everything then works as expected.
> 
>   /etc/nvidia/nvidia-modprobe.conf contains what looks to be
>   suitable aliases to allow modprobe -r nvidia to unload
>   nvidia-current however I'm not sure if that file is loaded or
>   how to check.
> 
>   Either way, it looks like bumblebee is unable to unload the
>   nvidia module that was loaded via nvidia-current and in turn
>   that is causing bbswitch to be unable to disable the dedicated
>   graphics card.

Hi,

Unfortunately I'm unable to reproduce on my jessie optimus laptop.

You mentioned that you installed "nvidia-kernel-dkms". Why only the DKMS
package and not everything else? Please install nvidia-driver to make
sure everything is correctly pulled down.

If all the packages are from the 352.79 backported version and the
problem still persists, please attach the result of:

reportbug --template nvidia-driver

Kind regards,
Luca Boccassi
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