Bug#886405: bumblebee-nvidia: optirun/primus seems to work, but no display output

[hotwater438 at tutanota.com]

Bug also affects me.

On Sat, 6 Jan 2018 02:25:57 +1300 Brainslug  wrote:
> Package: bumblebee-nvidia
> Version: 3.2.1-17
> Severity: normal
> 
> Dear Maintainer,
> 
> I am trying to get optirun/primusrun to work on a Dell Precision M4800
> laptop which has Optimus capabilities and the following hardware:
> 
> brainslug at m4800:~$ lspci
> ...
> 00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core
> Processor Integrated Graphics Controller (rev 06)
> ...
> 01:00.0 VGA compatible controller: NVIDIA Corporation GK107GLM [Quadro
> K1100M] (rev ff)
> 
> 
> I've installed bumblebee-nvidia and primus packages 3.2.1-17, running
> kernel 4.14.0-2-amd64, no multi-arch, Debian testing. No external
> displays connected, only internal laptop display used.
> 
> 
> optirun/primusrun seems to work for some programs, like darktable &
> bash, but for most programs I don't get any display output, examples
> include firefox, glxgears, glxinfo.
> 
> 
> According to syslog the Nvidia card gets activated and I can see that
> /proc/acpi/bbswitch changes from "OFF" to "ON" during
> a primusrun/optirun attempt. I just don't see the program output.
> 
> 
> Some debug info below - if this bug report should be filed against
> another package, please let me know. Any help would be much appreciated.
> 
> 
> Initial state:
> 
> brainslug at m4800:~$ cat /proc/acpi/bbswitch
> 0000:01:00.0 OFF
> 
> then
> 
> brainslug at m4800:~$ optirun -v glxinfo
> [  552.198375] [INFO]Response: Yes. X is active.
> 
> [  552.198392] [INFO]Running application using primus.
> ^C[  605.131876] [WARN]Received Interrupt signal.
> 
> while running, this in other shell:
> 
> brainslug at m4800:~$ cat /proc/acpi/bbswitch
> 0000:01:00.0 ON
> 
> Then after the command is terminated via Ctrl-C:
> 
> brainslug at m4800:~$ cat /proc/acpi/bbswitch
> 0000:01:00.0 OFF
> 
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pr1v4cy 1s p0w3r
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