Bug#900248: nvidia-driver: update to 390.59 breaks direct rendering

[floris]

> 
> Given that we already have
> /etc/nvidia/current/nvidia-drm-outputclass.conf
> with this content:
> 
> Section "OutputClass"
>     Identifier     "nvidia"
>     MatchDriver    "nvidia-drm"
>     Driver         "nvidia"
> EndSection
> 
> Does changing this to
> 
> Section "OutputClass"
>     Identifier     "nvidia"
>     MatchDriver    "nvidia-drm"
>     Driver         "nvidia"
>     ModulePath     "/usr/lib/xorg/modules/linux"
> EndSection
> 
> (and reverting any other workarounds applied to the module)
> fix the issue?
> (that should be the minimal amount of changes ...)
> 
> Does this work with the xorg in stretch, too?
> (as in "it does not break the driver/xorg in stretch")
> (such that we hopefully don't have to handle stretch+buster 
> differently)
> 
> Andreas
> 

I don't expect this will work with a xserver less then 1.20, because the 
ModulePath option in an OutpuClass section is an unknown option.