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+---- Thread: GBM standalone on linux -- no display (/showthread.php?tid=373789)
GBM standalone on linux -- no display - grat - 2023-07-15
I've been running Kodi for some time on a Manjaro linux box, with an AMD Ryzen 2200G APU. System's been running fine under X11/Kwin for some time (auto-login for user, start Kodi via .xinitrc). Unfortunately, Manjaro has gone all in on pipewire, and frankly, the experience is poor-- audio takes several second to sync up, excessive stuttering, etc. So, after doing research, I figured that switching to kodi-gbm would solve most of my issues, and allow me more direct access to hardware (as well as reverting to pulseaudio, which has always worked well for me).
After a bit of finagling to get the system auto-starting the kodi-gbm.service, with appropriate rights, group membership, file ownerships, etc., the system is now at the point where kodi-standalone loads just fine, communicates with my HDMI port correctly, and everything seems to work-- moving the cursor with the remote causes GUI sounds, it connects to the database, and I can even connect to the web server.
But there's no display. Just a black screen.
Kodi / Hardware info:
Starting Kodi (20.2 (20.2.0) Git:20230629-nogitfound). Platform: Linux x86 64-bit
Using Release Kodi x64
Kodi compiled 2023-06-29 by GCC 13.1.1 for Linux x86 64-bit version 6.3.0 (393984)
Running on Manjaro Linux 23.0.0, kernel: Linux x86 64-bit version 6.1.38-1-MANJARO
FFmpeg version/source: 4.4.1-Kodi
Host CPU: AMD Ryzen 3 2200G with Radeon Vega Graphics , 4 cores available
Debug log:
https://paste.kodi.tv/ilerepebah.kodi
I believe the issue is this:
debug <general>: EGL Debugging:
Error: EGL_BAD_SURFACE
Command: eglSwapBuffers
Type: EGL_DEBUG_MSG_ERROR_KHR
Message: dri2_swap_buffers
If I understand GBM correctly, the buffer is being created, but the call that actually displays the buffer is failing.
As near as I can tell, the AMD GPU drivers are correctly loaded, GL/EGL is there, DRI access is working, and it's finding the available video modes correctly.
I'm stumped. Suggestions?
--grat
RE: GBM standalone on linux -- no display - grat - 2023-07-15
After doing some testing on a second Manjaro box, it became apparent most of the problems I was encountering were not "normal".
So I rebuilt the system with a minimalist arch install, and so far, appears to be working.
But if anyone has any suggestions on what might have been wrong, I'd love to hear it.
--grat