Comment # 4 on bug 1161439 from Stefan Dirsch

Just had a try with current TW/KDE using still libva 2.5.0. No crashes with
chromium. As expected libva cannot work with virtio driver. So you see error
messages during startup of chromium, but it starts!

XOrg Session
---------------
# chromium
libva error: va_getDriverName() failed with unknown libva
error,driver_name=(null)
[2992:2992:0226/150457.010027:ERROR:vaapi_wrapper.cc(417)] vaInitialize failed:
unknown libva error
[2992:2992:0226/150457.112318:ERROR:viz_main_impl.cc(161)] Exiting GPU process
due to errors during initialization
libva error: va_getDriverName() failed with unknown libva
error,driver_name=(null)
[3013:3013:0226/150457.240237:ERROR:vaapi_wrapper.cc(417)] vaInitialize failed:
unknown libva error

# vainfo
libva info: VA-API version 1.5.0
libva info: va_getDriverName() returns -1
libva error: va_getDriverName() failed with unknown libva
error,driver_name=(null)
vaInitialize failed with error code -1 (unknown libva error),exit

Wayland session
-------------------
# chromium
libva error: va_getDriverName() failed with unknown libva
error,driver_name=(null)
[4212:4212:0226/153601.808107:ERROR:vaapi_wrapper.cc(417)] vaInitialize failed:
unknown libva error
[4212:4212:0226/153602.060344:ERROR:viz_main_impl.cc(161)] Exiting GPU process
due to errors during initialization
libva error: va_getDriverName() failed with unknown libva
error,driver_name=(null)
[4404:4404:0226/154008.323373:ERROR:vaapi_wrapper.cc(417)] vaInitialize failed:
unknown libva error

# vainfo
libva info: VA-API version 1.5.0
libva info: va_getDriverName() returns 0
libva info: Trying to open /usr/lib64/dri/emgd_drv_video.so
libva info: va_openDriver() returns -1
vaInitialize failed with error code -1 (unknown libva error),exit

No idea why libva tries to open the emgd driver on Wayland with vainfo ...