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

[Peter De Wachter]

Package: nvidia-driver
Followup-For: Bug #900248

I think this bug is caused by a change in xserver 1.20. The nvidia
libglx.so gets installed in /usr/lib/xorg/modules/linux/, but this
directory has been removed from X's search path. As a result X only
finds the default libglx.so in /usr/lib/xorg/modules/extensions/.
See this commit:
https://cgit.freedesktop.org/xorg/xserver/commit/?id=97bd6e453676516891250389ec0fd695c110087c

Best regards,
Peter