Bug 11876 - i.MX6: Chromium 57 is not able to use GPU with X11
Summary: i.MX6: Chromium 57 is not able to use GPU with X11
Status: RESOLVED NOTABUG
Alias: None
Product: BSPs
Classification: Build System, Metadata & Runtime
Component: bsps-meta-fsl-arm (show other bugs)
Version: 2.0.3
Hardware: Other arm
: Undecided normal
Target Milestone: ---
Assignee: Otavio Salvador
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Depends on:
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Reported: 2017-07-31 15:00 UTC by Johannes Bauer
Modified: 2017-07-31 15:37 UTC (History)
0 users

See Also:
OS type for building Yocto: ---
Type of Regression: ---
Verified:
Documentation change: Don't know

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Description Johannes Bauer 2017-07-31 15:00:41 UTC 
I am using this Yocto 2.0 build by Congatec for their QSeven i.MX6 module.

Xorg is starting fine with GPU support.

X11 GPU test programs (e.g. tiger) are working fine.

Then I built a plain Chromium 57 and copied it on top of this Yocto build.

chrome://gpu shows that the GPU and WebGL are available, but in the log I see:

drmOpenDevice: open result is 90, (OK)
drmOpenByBusid: drmOpenMinor returns 90
drmOpenByBusid: drmGetBusid reports platform:Vivante GCCore:00
[20500:20522:0731/143818.506168:ERROR:simple_backend_impl.cc(137)] Failed to create directory: /mnt/sd/.cache/Default/Cache
[20500:20522:0731/143818.506328:ERROR:simple_backend_impl.cc(585)] Simple Cache Backend: wrong file structure on disk: /mnt/sd/.cache/Default/Cache
[20500:20523:0731/143818.507012:ERROR:cache_util.cc(134)] Unable to move cache folder /mnt/sd/.cache/Default/Cache to /mnt/sd/.cache/Default/old_Cache_000
[20500:20523:0731/143818.507130:ERROR:cache_creator.cc(133)] Unable to create cache
[     1] libGAL: Performing a software resolve!
[20538:20538:0731/143818.655305:ERROR:gles2_cmd_decoder.cc(2416)] [GroupMarkerNotSet(crbug.com/242999)!:68DE4578]GL ERROR :GL_INVALID_ENUM : BackFramebuffer::Create: <- error from previous GL command
[20538:20538:0731/143818.687284:ERROR:gl_context_glx.cc(240)] Couldn't make context current with X drawable.
[20538:20538:0731/143818.691691:ERROR:gl_context_glx.cc(267)] glXMakeCurrent failed in ReleaseCurrent
[20538:20538:0731/143818.692018:ERROR:gpu_command_buffer_stub.cc(628)] Failed to make context current.

When I try to run a WebGL test, it fails.
Comment 1 Johannes Bauer 2017-07-31 15:05:14 UTC 
Please ignore these lines in the log file:

[20500:20522:0731/143818.506168:ERROR:simple_backend_impl.cc(137)] Failed to create directory: /mnt/sd/.cache/Default/Cache
[20500:20522:0731/143818.506328:ERROR:simple_backend_impl.cc(585)] Simple Cache Backend: wrong file structure on disk: /mnt/sd/.cache/Default/Cache
[20500:20523:0731/143818.507012:ERROR:cache_util.cc(134)] Unable to move cache folder /mnt/sd/.cache/Default/Cache to /mnt/sd/.cache/Default/old_Cache_000
[20500:20523:0731/143818.507130:ERROR:cache_creator.cc(133)] Unable to create cache

This cache issue is fixed now, but the main problem resides.
Comment 2 Johannes Bauer 2017-07-31 15:37:18 UTC 
Chromium command-line switch "--use-gl=egl" seems to solve the issue.