+a bunch of Viz people: I haven't made changes to this part of the code recently. Anyone know what might be going on or encounter this? Thanks!

Are you running in xvfb/xdummy etc.?

My Linux CrOS build works fine at ea7b84f594d16edfd2f91ca84b3e08518df87698 from this morning. 

1. What happens if you try running in a new terminal? There are some env variables that change things.
2. Are you running locally, xvfb or over CRD?
3. Try running with --use-gl=egl and see if that helps.
4. If you run a Linux desktop build check about:gpu. If GLX isn't working it will fall back to software compositing with SwiftShader GL.

Answers to questions:
- running in X11 terminal, not xvfb, etc.
- running locally
- trying --use-gl=egl gives slightly different message, but same result:

[175726:175757:0122/121458.574235:ERROR:service_manager_context.cc(252)] Attempting to run unsupported native service: /usr/local/google_ssd/projects/chromium/src/out/CrOSRelease/content_gpu.service
[179059:179059:0122/121458.602735:ERROR:gl_surface_egl.cc(826)] EGL display query failed with error EGL_SUCCESS
[179059:179059:0122/121458.602766:ERROR:gl_surface_egl.cc(840)] eglInitialize Default failed with error EGL_BAD_DISPLAY
[179059:179059:0122/121458.602776:ERROR:gl_ozone_egl.cc(20)] GLSurfaceEGL::InitializeOneOff failed.
[179059:179059:0122/121458.604445:ERROR:viz_main_impl.cc(197)] Exiting GPU process due to errors during initialization

- about:gpu

Interestingly, I get (event when running in a fresh profile):

Graphics Feature Status
Canvas: Software only, hardware acceleration unavailable
CheckerImaging: Enabled
Flash: Software only. Hardware acceleration disabled
Flash Stage3D: Software only. Hardware acceleration disabled
Flash Stage3D Baseline profile: Software only. Hardware acceleration disabled
Compositing: Software only. Hardware acceleration disabled
Multiple Raster Threads: Enabled
Native GpuMemoryBuffers: Software only. Hardware acceleration disabled
Rasterization: Software only. Hardware acceleration disabled
Video Decode: Software only. Hardware acceleration disabled
WebGL: Software only, hardware acceleration unavailable
WebGL2: Software only, hardware acceleration unavailable
Problems Detected
Native GpuMemoryBuffers have been disabled, either via about:flags or command line.
Disabled Features: native_gpu_memory_buffers

Not sure why ...

It seems like Chrome trying to use the Nvidia driver is broken on your machine. I don't have any ideas for why exactly that might be though. Can you run 'glxgears' at all?

Is your driver maybe busted (e.g. update or something)? Can you attach the output of 'glxinfo' ?

Ha ha .. ok ... probably the rodete upgrade that I tried to start the other day, and it early-outed and said I had to uninstall the NVidia drivers first and try again ...

Except I haven't done that yet, but I wonder if the failed upgrade attempt did something. I'll try completing the update tonight and see what happens.

$ glxinfo
name of display: :0.0
X Error of failed request:  GLXBadContext
  Major opcode of failed request:  154 (GLX)
  Minor opcode of failed request:  6 (X_GLXIsDirect)
  Serial number of failed request:  26
  Current serial number in output stream:  26

Yep, that's a busted driver.
Feel free to reopen after this is fixed if the problem persists.

I've seen other people with this problem recently, including erg@ and probably estade@. erg@ and I saw the issue go away after a reboot. I had recently (~2 days before) updated to rodete. Does this make sense to anyone?

It sounds like something went wrong updating nvidia drivers and then on restart the nvidia driver update was successful.

A reboot did fix it for me. I learned I should have searched for "all issues" instead of just open ones to find the solution.