Dear Maintainer,

 What led up to the situation? Unknown

 What exactly did you do (or not do) that was effective (or
     ineffective)?Attempt to launch a help screen in any program, it fails to
show any text, I tried launching yelp from a command line and I still get the
blank white screen.

What was the outcome of this action? A blank white screen shows with this in
the command line output:
        yelp
src/nv_gbm.c:288: GBM-DRV error (nv_gbm_create_device_native):
nv_common_gbm_create_device failed (ret=-1)

pci id for fd 28: 10de:1b80, driver (null)
pci id for fd 29: 10de:1b80, driver (null)
pci id for fd 30: 10de:1b80, driver (null)
pci id for fd 29: 10de:1b80, driver (null)
pci id for fd 30: 10de:1b80, driver (null)
src/nv_gbm.c:288: GBM-DRV error (nv_gbm_create_device_native):
nv_common_gbm_create_device failed (ret=-1)

pci id for fd 24: 10de:1b80, driver (null)
pci id for fd 25: 10de:1b80, driver (null)
pci id for fd 26: 10de:1b80, driver (null)
pci id for fd 25: 10de:1b80, driver (null)
pci id for fd 26: 10de:1b80, driver (null)
KMS: DRM_IOCTL_MODE_CREATE_DUMB failed: Permission denied
KMS: DRM_IOCTL_MODE_CREATE_DUMB failed: Permission denied
Failed to create GBM buffer of size 960x584: Permission denied

 What outcome did you expect instead? To be able to view help files.
If it matters I'm using MATE 1.28.2 for a desktop with NVIDIA GPUs.

This kind of bug is likely a webkit2gtk bug so I'm reassigning.

Please be specific about what NVIDIA graphics hardware you have.

Thank you,
Jeremy Bícha

Can you set the WEBKIT_DISABLE_DMABUF_RENDERER=1 environment variable
and run yelp again? Does it solve the problem?

Berto

Hi Berto,
It allows me to type yelp and it works but one of the help pages open
in a given program for example the help page for evolution is still a
blank white page.
I've tried restarting the desktop session.